JBL Speaker K2 S5800 User Manual

O W N E R ’S G U ID E  
P R O J E C T  
K 2 S 5 8 0 0  
3 -W A Y  
FLO O R S TA N D IN G  
S P EA KER S Y S TEM  
®
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P R E F A C E  
Thank you for selecting a Project  
K2 S5800 loudspeaker system. It  
represents the sum total of our  
research and developmental  
This guide exists for several  
Also, we believe that the historical  
and technical information included  
will add immeasurably to your total  
enjoyment of the loudspeaker  
system. Project K2 S5800 is unpar-  
alleled in the field of sound repro-  
duction. The story and principles  
behind it are an interesting, inform-  
ative and fitting precursor to a life-  
time of musical enjoyment.  
purposes. As your owners manual,  
it contains all necessary back-  
ground information and detailed  
instructions for setting up your  
Project K2 S5800 loudspeaker  
system, including unpacking the  
loudspeaker, selecting the correct  
location, speaker wire, wiring  
scheme and amplification, and  
connecting it to its associated  
electronics. This information will  
be found in Chapters 3 through 7.  
In addition, we have included a  
detailed description of Project  
K2 S5800 loudspeakers (Chapter 2)  
so that you may become thoroughly  
acquainted with its unique design  
and technological features.  
efforts in sound reproduction over  
the last half century. We have  
labored to create a loudspeaker  
system with no acoustical or elec-  
trical limitations whatsoever. While  
the Project K2 S5800 loudspeaker  
is itself a new development, the  
goal behind it goes right back to  
the earliest days of the original  
James B. Lansing Sound Company.  
Please take a moment to  
register your product online at  
www.jbl.com. Registration  
enables us to keep you posted on  
our latest advancements, and  
helps us to better understand our  
customers and build products  
that meet their needs and  
expectations.  
But it is your listening pleasure that  
ultimately determines how success-  
ful we are in this endeavor. It is  
solely in the interest of ensuring a  
perfect listening experience that  
we ask you to faithfully follow the  
setup and operation procedures  
outlined in this owners guide.  
Although physically and materially  
imposing, the setup procedure of  
the Project K2 S5800 loudspeaker  
system is relatively simple. We  
strongly urge you to read this  
manual thoroughly before you  
begin, and consult it frequently  
throughout the process.  
Considerations must be made in  
placing the speakers; their stature  
makes it imperative that you  
become familiar with the entire  
setup process in advance.  
3
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C H A P T E R 1 – LE G A C Y : T H E H IS TO R IC A L D E V E LO P M E N T O F  
T H E J B L P R O J E C T LO U D S P E A K E R S  
D E F IN IN G T H E P R O J E C T  
C O N C E P T  
Of those few who seek perfection in  
sound reproduction, only a handful  
have actually achieved it. The price  
is always high. It is a rare occur-  
rence indeed when an individual or  
group is able to triumph over the  
constraints of economic and tech-  
nological reality even once.  
“Periodically, a manufacturer gets  
this same feeling....The science of  
acoustics has provided us with  
basic principles – available to all for  
achieving precision reproduction.  
It is only a matter of incorporating  
these methods into a system design,  
and then taking every bit of trouble  
necessary to build a system pre-  
cisely to the design. It isn't easy, but  
thats the way it is done.”  
The Hartsfield began a tradition at  
JBL that continues today. First, engi-  
neer a product as close to perfection  
as possible. When it reaches that  
level, it is time to make it better.  
In 1954, the Hartsfield was signifi-  
cant in that it represented not new  
technology, but rather a new level  
of the all-technical manufacturing  
approach pioneered by James B.  
Lansing some 20 years before it.  
Like its Project series successors,  
it was a high-efficiency system  
incorporating compression driver  
technology, one combining the  
qualities of high output, low distor-  
tion, exceptional stereo imaging  
and fatigue-free listening. Most  
important, it was the first consumer-  
available listening system to do so.  
At JBL, this has happened eight  
times. In each case, its engineers  
were told to build the speaker sys-  
tem they had always wanted to  
build. Whatever resources were  
required would be made available.  
Thus began an ongoing investiga-  
tion into new frontiers of sound  
reproduction, beginning in 1950,  
and continuing to the present day.  
The Ranger-Paragon, JBLs second  
Project system, was the first seri-  
ous attempt at a reflecting speaker  
system, and broke new ground in  
the concept of stereo imaging.  
Essentially two independent full-  
range speaker systems installed in  
a handsome curved cabinet nearly  
9 feet long, the Paragons enclosure  
was treated as an extension of its  
transducers. In essence, the system  
had its own “built-in acoustics.” In  
many respects the Paragon antici-  
pated loudspeaker developments  
that would occur years – and even  
decades – later.  
The products that have resulted  
from this venture are now known as  
the JBL Project loudspeakers. Each  
represents the absolute peak of  
every technological, material and  
engineering innovation available  
at that time, combined into a  
single system. They are Hartsfield,  
Paragon, Everest, K2 S9500/7500 and  
K2 S5500. The newest models are  
the K2 S5800 and K2 S9800.  
In this respect, Project K2 S5800  
is at once the most advanced and  
sophisticated loudspeaker in the  
world today (save for the Project  
K2 S9800) and a speaker whose  
technology is deeply rooted in more  
than 50 years of tradition. JBLs  
president in 1954, William Thomas,  
described the Hartsfield as “...the  
speaker system we have always  
wanted to build...the finest compo-  
nents ever made available to seri-  
ous listeners.”  
For nearly 30 years, the Paragon  
remained the most acoustically  
viable sound system for the home.  
Today, along with the Hartsfield,  
it is still the most sought-after  
speaker in the world.  
Although differing in performance  
details and physical attributes, each  
of the Project loudspeakers has  
shared a common objective: to ele-  
vate sound reproduction to levels  
defined only by the limitations of  
existing materials and technology.  
And despite a spread of nearly 50  
years, all Project loudspeakers  
have shared many common  
In 1986, JBL introduced a new  
Project system that retained the  
Paragons overall sense of musicality  
while upgrading its character by  
incorporating three decades’ worth  
of continuous development in every  
facet of its design. Its name reflected  
the pinnacle of achievement it rep-  
resented: Project Everest.  
He went on to describe the process  
behind his creation: “Most people  
who own and appreciate fine sound  
reproduction equipment look for-  
ward to the day when they will be  
able to assemble a system without  
limitation in just exactly the way  
they think it should be done.  
features – testimony to their  
foundation on the technology and  
manufacturing techniques upon  
which JBL was built.  
For the first time, the rest of the  
sound reproduction chain – and not  
the loudspeaker or its transducers –  
would impose limits on overall sys-  
tem performance. Like the Paragon  
and Hartsfield, Project Everest  
was built around compression  
driver technology and addressed  
a more refined stereo image than  
was previously considered  
technically feasible.  
4
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After Project Everest was intro-  
duced, sound recording and play-  
back technology underwent a  
revolution of its own. With the  
advent of CD, extremely demanding  
recorded signals had become the  
rule rather than the exception –  
the average source material used  
by the typical audio enthusiast  
had become superior to the best  
demonstration material of even just  
a few years ago. In overall dynam-  
ics and transient response, trans-  
ducers were once again a potential  
weak link in the high-end audio  
reproduction chain.  
Unlike the earlier Projects K2 S9500  
and K2 S5500, the new K2 S5800  
employs a 3-way, four-driver  
the dual woofers than the older  
generations’ 2-inch diaphragm.  
Both compression drivers are  
mounted in a unique combination  
Bi-Radial® horn structure,  
precision-molded from JBL’s  
proprietary SonoGlassmaterial, an  
extremely dense and mechanically  
inert substance that is easily  
molded into the unusual shapes  
required for superior acoustic  
performance.  
design, incorporating an ultrahigh-  
frequency (UHF) compression driver  
and horn to reproduce high fre-  
quencies up to 50kHz. With the UHF  
handling the high frequencies, the  
high-frequency (HF) transducer  
could then be upgraded to a new  
design using a 3-inch diaphragm  
for better reproduction of lower  
frequencies and better blend with  
It was in this environment that JBL  
set out to create its fourth and fifth  
Project loudspeakers, K2 S9500 and  
K2 S5500. As with Hartsfield, the  
simplicity of a two-way system was  
considered the most promising  
design track. Advances in trans-  
ducer design and low-frequency  
alignment would make the con-  
struction of a two-way system  
of unprecedented physical and  
acoustical scale possible. Engineers  
took the core components – the  
low- and high-frequency drivers –  
and optimized them by redesign-  
ing their magnetic structures,  
diaphragms and framework for  
greater linearity, dynamic capability  
and transient response.  
1200FE  
12" LF  
Driver  
045Ti  
1" UHF  
Compression  
Driver  
435AL  
3" HF  
Compression  
Driver  
SonoGlass  
Bi-Radial Horn  
90° Horizontal  
50° Vertical  
In the years following the introduc-  
tion of the K2 S9500 and K2 S5500,  
sound reproduction technology has  
undergone another series of revolu-  
tionary changes, with the introduc-  
tion of DVD-Video, Dolby* Digital,  
1" MDF  
Construction  
1200FE  
12" LF  
Driver  
®
DTS, DVD-Audio, and Super Audio  
Port  
Tube  
CD (SACD). Frequency responses to  
50kHz and 3-digit dynamic range  
and signal-to-noise ratios have now  
become commonplace. In order to  
faithfully reproduce such robust  
sonic properties, the loudspeaker  
needed to undergo drastic improve-  
ments to its transducer, network  
and enclosure technologies.  
Curved  
Dress  
Panel  
Spiked Feet  
Foot Base  
See Figure 1.  
Figure 1. Cutaway view of Project K2 S5800 speaker system.  
5
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In order to re-create the extremely  
high dynamic range provided by  
todays audio sources, a new low-  
frequency transducer was used,  
incorporating a ferrite magnet, 3-  
inch edge-wound voice coil, and  
an Aquaplas-coated 12-inch cone  
made of Kevlar® composite, a  
mixture of Kevlar fiber and pulp  
material that provides increased  
rigidity. An EPDM rubber sur-  
round was chosen for both its  
flexibility and long life. The  
Despite its power and sophistica-  
tion, Project K2 S5800 is a marriage  
of tradition and technology. It  
reflects the design, engineering and  
manufacturing expertise derived  
and refined through nearly six  
decades of experience that are  
the exclusive province of one  
loudspeaker builder: JBL.  
Symmetrical Field Geometry™  
(SFG) magnetic structure mini-  
mizes second harmonic distortion  
by providing a uniform flux field  
that avoids uneven cone move-  
ment. The rigid cast-aluminum  
frame is also designed to mini-  
mize distortion, as aluminum has  
no effect on the magnetic field.  
Extensive computer-aided engi-  
neering and design effort made to  
develop the optimized port tuning  
employed in Project K2 S5800 has  
resulted in a significant advance in  
the concept of state-of-the-art bass  
reproduction. This proprietary align-  
ment method offers the best damp-  
ing characteristics and provides  
extremely fast alignment, eliminat-  
ing the typical “bass-reflex” sound  
of a ported system.  
All three transducers are built using  
the most advanced materials and  
precision manufacturing tech-  
niques refined from renowned JBL  
professional sound systems.  
High power-handling capability  
results in no limitations on the types  
of source material. Project K2 S5800  
has very high input sensitivity; even  
a relatively small high-end amplifier  
can provide full dynamic range  
without compression.  
6
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C H A P T E R 2 – T H E P R O J E C T K 2 S 5 8 0 0 LO U D S P E A K E R :  
A T R IU M P H IN A C O U S T IC S A N D T E C H N O LO G Y  
stable pinpointed stereo image. All  
the sound seems to come from the  
combination horn in the center.  
Music imaging is more realistic  
since the sound appears to emanate  
from one point and not from multiple  
points at different times.  
Project K2 is a constant-angle sys-  
tem without regard to frequency.  
Careful horn design enables the  
loudspeaker to strictly adhere to a  
60° horizontal/30° vertical coverage  
pattern. This Controlled Coverage  
arrangement precisely defines the  
optimum listening area and mini-  
mizes room effects. At the same  
time, it provides a generous “sweet  
spot” for more comfortable critical  
listening sessions.  
Figure 2. Height of K2 S5800 speaker system in relation to listener.  
The following sections describe  
the primary features and compo-  
nents of the Project K2 S5800  
loudspeaker system.  
Thanks to the centrally mounted  
combination horn, both the UHF  
(ultrahigh-frequency) and HF (high-  
frequency) drivers are located at  
the ear level of the listener.  
The enclosure of the K2 S5800  
is specially designed to transfer  
unwanted mechanical energy  
away from any acoustically active  
surfaces, virtually eliminating  
coloration.  
See Figure 2.  
T H E D U A L 1 2 0 0 F E LO W -  
F R E Q U E N C Y D R IV E R S  
The large 3-inch HF transducer  
allows the two 12-inch woofers to  
be crossed over at a frequency low  
enough to eliminate any audible  
effects of their exact location and  
proximity.  
See Figure 3.  
In order to achieve the lowest pos-  
sible distortion and compression  
along with the high linear excur-  
sion necessary, the 1200FE is  
equipped with a ferrite magnet.  
As with earlier Project K2 low-  
The massive enclosure, along  
with its specially designed brass  
modular feet, couples directly to  
the floor, and the system literally  
becomes a structural part of its  
environment. Any vibration is  
transmitted harmlessly down the  
channel provided by the ring/  
disc axes and into the floor. The  
SonoGlass combination horn  
maintains a smooth energy  
transmission path.  
Full image coherency is main-  
tained, resulting in an acoustically  
Terminal Base  
Glass-Filled ABS  
Terminals  
Gold-Plated 5-Way  
Binding Posts  
Surround  
EPDM Foam Rubber  
Pigtail Leads  
Silver-Plated  
Cadmium Copper  
w/Conex Core  
Magnet  
Ceramic  
The Project K2 S5800 transducer/  
enclosure arrangement represents  
the best possible balance of the  
various tuning options and avoids  
the mid-bass response buildup  
found in other vented systems.  
Response works with, rather  
than against, the effects of  
Spiders  
Nomex®  
Polepiece  
Steel SAE-1008  
Dust Dome  
Paper Pulp  
Composite  
Back Plate  
Steel SAE-1008  
Spider Spacer  
Extruded Aluminum  
6063  
“room loading.”  
Pole Sleeve  
Hi-Purity Copper  
The unique design of the Project K2  
system is the platform for its equally  
unique acoustical attributes.  
Trim Ring  
NBR Rubber  
Voice Coil  
Aluminum Ribbon Wire  
ES-1350 on High Temp  
Fiberglass Former  
Cone Body  
Special Paper  
Pulp Composite  
Frame  
Cast 380  
Aluminum  
Figure 3. Cutaway view of 1200FE low-frequency transducer.  
7
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Aluminum-  
Alloy Cover  
Neodymium  
Magnet  
75mm  
Pure-  
Aluminum  
Diaphragm  
Phase Plug  
Aluminum  
Edge-Wound  
Voice Coil  
Binding-  
Post Input  
Terminal  
Figure 4. Cutaway view of 435Al high-frequency transducer.  
4 3 5 A L A LU M IN U M  
D IA P H R A G M /  
N E O D Y M IU M M A G N E T  
H IG H - F R E Q U E N C Y  
C O M P R E S S IO N D R IV E R  
frequency drivers, it utilizes  
forced-air cooling. The entire  
magnetic structure is attached to  
a die-cast aluminum-alloy frame.  
This provides accurate, rigid  
support for the motor and cone  
mounting points, as well as  
doubling as a massive heatsink  
by providing a huge surface area  
for heat dissipation.  
The voice coil itself is constructed  
from edge-wound aluminum wire  
on a massive 3-inch-diameter  
fiberglass former. This configura-  
tion provides for further cooling  
ability in conjunction with the  
motor design.  
See Figure 4.  
The 435Al neodymium high-  
frequency compression driver is  
based on the professional JBL 2430  
device. It incorporates a rare-earth  
neodymium magnet structure,  
designed by extensive computer  
modeling, including finite element  
analysis, which combines the  
attributes of efficiency, strength,  
low mass and compact size. This  
motor structure is coupled with  
a 3-inch aluminum diaphragm.  
Aluminum provides improved low-  
distortion characteristics and flat  
frequency response.  
The Aquaplas-coated, Kevlar-  
composite cone, along with the  
EPDM rubber surround, provides  
excellent damping and transient  
response characteristics.  
The 1200FE has a central cooling  
duct which effectively cools the  
voice coil and reduces the likeli-  
hood of hot spots. By reducing the  
operating temperature of the voice  
coil, power compression is signifi-  
cantly reduced, which enables the  
low-frequency driver to operate in  
a more linear fashion over a wider  
sound pressure level (SPL) range.  
High-temperature materials and  
adhesives allow the driver to han-  
dle extremely high power levels  
over extended periods of time. The  
SonoGlass horn is acoustically  
inert and precision-molded to  
exacting tolerances.  
8
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Edge-Wound  
Aluminum Voice Coil  
Aluminum-  
Alloy Cover  
25mm  
Pure-Titanium  
Diaphragm  
Stainless-  
Steel Mounting  
Bracket  
Phase Plug  
Neodymium  
Magnet  
Gold-Plated  
Input Terminal  
Figure 5. Cutaway view of 045Ti ultrahigh-frequency transducer.  
0 4 5 T I P U R E - T ITA N IU M  
D IA P H R A G M /  
N E O D Y M IU M M A G N E T  
U LT R A H IG H - F R E Q U E N C Y  
C O M P R E S S IO N D R IV E R  
All internal connections are of pro-  
The HF level control allows fine-  
tuning of the high-frequency output  
level to the acoustics of the lis-  
tening space as well as to the  
listeners liking.  
prietary Monster Cable®, and all  
critical connections are gold-plated  
for long life. Capacitors are ultra-  
high-grade polypropylene for  
extremely low loss. Network plates  
and the port bezels are metal to  
eliminate vibration and help con-  
duct unwanted heat away from the  
network. All switches and compo-  
nents are of the highest quality for  
long life and reduced distortion of  
all types.  
See Figure 5.  
The 045Ti utilizes the same princi-  
ples as the 435Al, in a smaller foot-  
print so that a frequency response  
up to 40kHz can be achieved.  
E X T E R N A L  
C O N N E C T IO N S  
The all-metal, gold-plated, 5-way  
binding-post input connectors pro-  
vide for both bi-amplification and  
bi-wiring, which are explained in  
detail later in this guide.  
IN T E R N A L C R O S S O V E R  
N E T W O R K  
Each loudspeaker unit has two  
internal dividing networks, one for  
the LF transducers and one for the  
combined HF and UHF transducers.  
The network also utilizes JBLs pro-  
prietary Charge-Coupled Linear  
Definitiontopology, which effec-  
tively “charges” the network at all  
times so that all components are  
constantly on and do not generate  
distortion while switching between  
the on and off stages. This is  
accomplished by a battery that  
biases the components in the net-  
work. The network also facilitates  
bi-amping and bi-wiring as neces-  
sary, using a configuration switch  
and shorting bars.  
E N C LO S U R E S  
The enclosure design of the  
Project K2 S5800 minimizes col-  
oration by dramatically reducing  
panel radiation. It is constructed  
from 1-inch (25mm)-thick MDF.  
The low-frequency section inter-  
faces with the external main con-  
trol panel for input connections and  
switch functions. They also employ  
massive air core inductors for best  
possible sonic characteristics and  
lowest possible coloration.  
The enclosures unusual thickness,  
along with the SonoGlass horn  
assembly, add up to the lowest  
vibration, most acoustically inert  
loudspeaker enclosure presently  
possible to construct. Enclosures  
are finished with a high-gloss  
polyurethane lacquer.  
9
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C H A P T E R 3 – U N P A C K IN G T H E P R O J E C T K 2 S 5 8 0 0 S Y S T E M  
All components of the Project K2  
system have been very carefully  
packed for maximum protection  
against damage.  
and carefully “walk” the loud-  
speaker in its Styrofoamend  
pads out of the carton. Two people  
may then lift the system out of the  
end pads.  
As with any superior audio product,  
it is advisable to keep the original  
packing materials in case it is  
necessary to transport the  
The four spiked feet are pre-  
installed in the bottom of the  
K2 S5800 in four locations. Four  
metal coasters are packed in the  
end pad. These are to be placed  
between the foot and the floor for  
further protection of the floor  
coverings. See Figure 6.  
Project K2 S5800 system.  
Because of the bulk and weight of  
this loudspeaker, at least two peo-  
ple are required to unpack it in the  
following manner: Open the front as  
well as the top of the carton. Slowly  
Figure 6. Inserting  
spiked feet.  
C H A P T E R 4 – S E LE C T IN G C A B LE  
Speaker wire and interconnecting  
cables are an important compo-  
nent in any audio system. With  
a system such as the Project  
K2 S5800, they assume a new  
level of criticality.  
We recommend using an audio-  
Both the left and right speaker/  
amplifier connections should be  
the same length. If the distance  
between one speaker and the  
amplifier(s) is greater than the  
other speaker and amplifier(s),  
use the longer length for both  
connections.  
phile-quality speaker wire of not  
less than 16 gauge for connections  
up to 15 feet (5 meters) as a mini-  
mum requirement. If your connec-  
tions will be longer, heavier-gauge  
wire is recommended. Project K2  
specialist dealers have the experi-  
ence and knowledge to recom-  
mend suitable speaker wire to best  
complement a particular system.  
The Project K2 S5800 loudspeakers  
are internally wired with high-  
quality copper Monster Cable,  
specially designed for JBL. The  
same care that was given to the  
selection of internal system wiring  
should be afforded to the selection  
and application of the cables that  
will connect Project K2 S5800  
loudspeakers to other system  
components.  
For bi-wire connections, the same  
type of wires may be used for both  
the low-frequency and high-fre-  
quency sections to reduce wire  
effects (resistance, inductance,  
etc.) and to avoid intermodulation  
of low and high frequencies in the  
wires. Specialized wires for low-  
frequency and high-frequency sec-  
tions may yield excellent results.  
Whatever wires are used, be sure  
that the low-frequency wires are  
as short as possible, and the left  
and right wires for each section  
are the same length.  
The amount of speaker wire  
required will depend on the dis-  
tance between the loudspeakers  
and amplifier(s), how many ampli-  
fiers will be used, and the method  
you select for connecting the  
amplifier(s) and loudspeakers  
(passive, bi-wire, or bi-amp; see  
Chapter 7). For maximum signal  
purity, it is advisable to locate the  
amplifier(s) as close as possible  
to the loudspeakers, even if this  
means that a longer distance  
will be needed between the  
It is advisable to use high-quality  
wire, such as Monster Cable, and  
to select the highest-grade wire  
available from the manufacturer.  
Many manufacturers produce  
audiophile cables worth consider-  
ing for Project K2 S5800. As with all  
electronics and associated compo-  
nents, however, every manufacturer  
offers products of varying quality  
to suit a range of budgets and  
applications.  
amplifier(s) and preamplifier.  
10  
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C H A P T E R 5 – A M P LIF IE R R E C O M M E N D A T IO N S  
No single type of amplifier is  
specified for use with the Project  
K2 S5800 system. The speakers are  
highly efficient and will operate  
adequately with an amplifier or  
receiver of 70–100 watts.  
For bi-wiring or bi-amplification  
applications, four identical ampli-  
fiers or two dual-channel units may  
be used, although specialized low-  
frequency and high-frequency  
amplifiers offer clear advantages.  
(If four amplifier channels are used,  
the high-frequency amplifier may  
be up to 6dB less powerful than  
the low-frequency amplifier. Due  
to the power versus frequency  
distribution of the music, the low-  
frequency section requires approxi-  
mately four times the power of the  
high-frequency section.)  
Project K2 S5800 specialist dealers  
can recommend amplification to  
best suit individual needs. In all  
cases, the left and right amplifiers  
for each section must be identical.  
Make sure that the input sensitivity  
of the two amplifiers is equal or that  
input level controls are provided to  
maintain the proper low to mid/high  
balance. If two identical stereo  
amplifiers are chosen, each amplifier  
may be located near a loudspeaker  
and drive low-frequency and high-  
frequency sections through short  
wire runs.  
However, the transient response  
and audio definition of a high-end  
system such as Project K2 S5800  
will pick up all inefficiencies and  
distortion in an amplifier system.  
For full-range operation, the  
Project K2 S5800 system can be  
used with an amplifier/receiver of  
as little as 30 watts. Amplifiers/  
receivers of 100–300 watts  
will ensure optimum system  
performance.  
There is no effective limit to the  
power handling capabilities of the  
Project K2 S5800 loudspeakers  
when driven by consumer audio  
amplifiers. No damage will occur  
when used with high-powered  
components. Source impedance is  
an important criterion in selecting  
an appropriate unit; the selected  
amplifier(s) should have a very  
high current capacity and must  
be capable of driving a low  
impedance load.  
11  
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C H A P T E R 6 – P LA C E M E N T A N D S E T U P C O N S ID E R A T IO N S  
The Project K2 S5800 loudspeaker  
system is designed to be less  
affected by room acoustics than  
conventional imaging systems.  
However, it is very sensitive to  
overall symmetry, and proximity  
to walls, ceilings and corners.  
the floor surface before placing and  
setting up the speakers. See Floor  
Requirements.  
Remember that these speakers  
weigh close to 185 lb (84kg) each  
and cannot be easily moved.  
If possible, the distance between  
the speakers should be the same  
as the distance between each  
speaker and the listening area.  
Angle the speaker in toward the  
listener so that when seated, the  
listener could look straight into the  
center of the speaker (Figure 7). As  
the distance increases between  
the speakers, increase the inward  
angle of the speaker.  
F LO O R R E Q U IR E M E N T S  
The floor in the location selected  
for setting up the Project K2 S5800  
speakers must be capable of sup-  
porting a load of 185 lb (84kg).  
Because of the coupling effect of  
the stainless steel feet, a flat, hard  
surface such as wood or linoleum  
is preferable. However, the design  
of the loudspeakers coupling sys-  
tem, along with the speakers  
Ideally, any listening room should  
contain a combination of live sur-  
faces (e.g., walls and windows)  
and absorbent surfaces (e.g.,  
drapes, carpets, upholstery). If the  
distance from floor to ceiling is  
short, it is preferable that one sur-  
face has an absorbent covering.  
With Project K2 S5800, it is most  
important to be able to accommo-  
date the optimum listening area that  
is defined by the 60° horizontal/  
30° vertical coverage pattern of  
the horn.  
The imaging qualities enable the  
speakers to be placed relatively far  
apart from each other. In addition,  
the low-frequency alignment fea-  
ture enables placing the speakers  
near or even in a corner without  
producing an overabundance of  
bass. This corner placement ability  
allows optimum performance even  
in small rooms.  
extreme weight, should result in  
excellent performance on any  
surface, even on carpets.  
To prevent indentations on wood  
or linoleum floors caused by the  
weight of the loudspeaker, always  
utilize the enclosed coasters. Do  
not set up the Project K2 S5800  
system directly on a ceramic tile  
floor; the concentrated weight  
might cause the tiles to crack.  
The listener should be centered in  
front of the speakers and furniture  
should be of an appropriate height  
so that when the listener is sitting,  
the ear level is on a vertical plane  
with the horn (approximately 32 in/  
80cm) as illustrated in Figure 2.  
The Project K2 S5800 system can  
operate fairly close to the wall.  
Allow enough clearance between  
the back of each speaker and the  
wall to allow making the connec-  
tions on the back of the speaker  
(approximately 2"3" is sufficient),  
and to avoid interference with the  
performance of the tuned port.  
CAUTION: Project K2 S5800 is a  
massive system comprising materials  
chosen for their density, with its  
weight concentrated in a relatively  
narrow area. Verify the integrity of  
Figure 7. Room placement of K2 S5800 speaker system.  
12  
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C H A P T E R 7 – P R O J E C T K 2 S 5 8 0 0 S W IT C H O P E R A T IO N S  
The K2 S5800 has two switches  
mounted on the network panel  
on the rear of the enclosure.  
The switches are covered by  
an access plate which is easily  
removed by unscrewing the two  
mounting screws. See Figure 8.  
5800  
K2 S  
The Network Mode (Bi-Amp)  
Switch (center) should be left in  
the Normal position except when  
bi-amplification with an external  
electronic crossover is to be  
employed. The necessary cross-  
over slopes for the K2 S5800 are  
very specific and bi-amping the sys-  
tem should only be done using fac-  
tory-approved electronics.  
TED  
orthridge, CA USA  
JBL INCORPORA  
8500 Balboa Blvd. N  
High Frequency  
Low Frequency  
The HF Trim Switch £ (right)  
adjusts the high-frequency level  
over the range of approximately  
1000Hz to 10kHz. The +1dB position  
gives the highest HF output and  
measures the most level. 0dB  
reduces the HF level by 1dB and  
the 1dB position reduces the HF  
level by an additional 1dB.  
+1dB  
0dB  
-1dB  
Although the range of these con-  
trols is rather small, each of them  
operate over a reasonably wide  
frequency range and thus have a  
noticeable effect on the overall  
tonal balance of the system. It is  
recommended that the system first  
be played with the switch in the  
middle position. This setting gives  
the most uniform measurements  
in a controlled environment. Of  
course, we are interested in pro-  
ducing the most pleasing sound in  
your environment with your choice  
of program material. It is, therefore,  
recommended that the HF Trim  
Switch £ be tested in its various  
settings on a variety of program  
material. Once you become familiar  
with their individual character, you  
should have no difficulty determin-  
ing the setting which produces the  
most pleasing, natural sound in  
your room with your equipment.  
P
M
HIGH FREQUENCY TRIM  
L/  
E
A
IR  
W  
M
A
S
U
A
, C  
e
g
D
. N  
E
T
rid  
rth  
A
lv  
R
B
O
a
o
P
o
R
lb  
d
O
a
C
B
IN  
y
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5
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B
8
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0
re  
0
F
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ig  
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5800  
K2 S  
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Figure 8. Access to control panel.  
13  
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C O N T R O LS A N D C O N N E C T IO N S  
B I-A M P  
+1dB  
0dB  
£
¡
N O R M A L/  
B I-W IR E  
–1dB  
H IG H FR EQ U EN C Y TR IM  
(–)  
(+)  
¢
H ig h Fr e q u e n c y  
§
Lo w Fr e q u e n c y  
(+)  
(–)  
Figure 9. K2 S5800 controls and connections.  
¡ Bias Battery: The bias battery  
supplies constant DC bias to the  
crossover capacitors, eliminating  
crossover distortion at zero electric  
potential. Replace the test battery  
supplied with your system with a  
9-volt, 006P rectangular battery as  
soon as possible. Thereafter,  
although the speaker will function  
without the battery, JBL recommends  
that you replace the battery every  
two years for best performance.  
Access the battery by unscrewing the  
cover. Make sure to observe proper  
polarity when installing the replace-  
ment battery.  
£ HF Trim Switch: This switch  
allows you to adjust the output of the  
high-frequency transducers to com-  
pensate for the acoustics of your  
room. The +1dB position increases  
the output, the 0dB position is a flat-  
level position, and the –1dB position  
decreases the output. Each position  
will affect the tonal balance over a  
wide frequency spectrum. Experiment  
by placing the switch in each position  
while listening to familiar program  
material and choose the position that  
suits your room acoustics and listen-  
ing preferences. You may find that  
after a few months, once the trans-  
ducers have settled in, that another  
adjustment is necessary. This is  
normal. Access the switch by  
¢ Mid/High-Frequency Input  
Terminals: For bi-wire or bi-amp  
configurations, connect the speaker  
wires for the mid- and high-frequency  
ranges to these terminals.  
Shorting Bars: Leave the short-  
ing bars in place only if you are using  
the passive single-wire connection  
option described on page 15.  
Otherwise, remove the bars to pre-  
vent possible damage to the speakers  
or your electronics.  
§ Low-Frequency Input  
Terminals: For bi-wire or bi-amp  
configurations, connect the speaker  
wires for the low-frequency range to  
these terminals.  
Network Mode Switch:  
This switch should be left in the  
“Normal/Bi-Wire” position unless you  
are connecting the speaker in a bi-  
amp configuration using two power  
amplifiers and an external electronic  
crossover. Access the switch by  
unscrewing the battery cover. The  
switch may be adjusted using a flat-  
head screwdriver.  
unscrewing the battery cover. The  
switch may be adjusted using a  
flathead screwdriver.  
14  
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S H O R T IN G B A R S  
Each speaker wire contains two  
conductors, one of which will have  
a stripe, color markings, or a ridge.  
speaker system will deliver superb  
performance with all methods.  
The K2 S5800 is shipped with short-  
ing bars installed between its low-  
frequency and high-frequency  
terminals. Please see Figure 10.  
To prepare the K2 S5800 for bi-wire  
or bi-amp operation, these bars  
must be removed by completely  
unscrewing each binding post,  
removing the bars, and replacing  
the binding posts. Wires can then  
be connected to each set of termi-  
nals (see Figures 10 and 12).  
Each speaker is shipped with  
external shorting bars in place  
(see Figure 10), connecting the  
upper and lower terminal posts  
on the left and right sides. These  
bars must remain in place for  
passive connections but must be  
removed for all bi-wire and bi-amp  
connections.  
Assign one of the two conductors  
as the negative conductor and the  
other as the positive conductor.  
Use these same designations for  
all system wiring. Always connect  
the conductors of the speaker wire  
appropriately to the corresponding  
negative and positive terminals on  
all system components. This will  
ensure that all components will  
work together (“in phase”). Con-  
necting the speakers out of phase  
will not damage them but will  
IMPORTANT: If the amplifiers are  
connected to the Project K2 S5800  
loudspeakers in the bi-wire or bi-  
amp mode with the shorting bars  
still on, the amplifier outputs will  
be shorted, which could result in  
costly amplifier damage when  
power is switched on.  
result in reduced low-frequency  
output and impaired stereo effect.  
+1dB  
0dB  
-1dB  
IM  
R
T
Y
C
N
E
U
Q
E
MP  
FR  
H
IG  
H
MAL/  
IRE  
Speaker wires may be fastened to  
the terminals by several methods.  
The most positive connection is  
made by directly connecting clean,  
bare connectors (exposed by strip-  
ping the ends of the wire) to the  
terminal posts.  
TED  
rthridge, CA USA  
o
JBL INCORPORA  
8500 Balboa Blvd. N  
High Frequency  
P A S S IV E C O N N E C T IO N  
M E T H O D  
Low Frequency  
The passive method requires one  
amplifier and one set of wires.  
Connections are made to the lower  
terminals (one black, one red). Do  
not remove the shorting bars.  
Loosen the lower terminal caps.  
Connect the positive conductor to  
the right (red) terminal and the  
negative conductor to the left  
(black) terminal (see Figures 11  
and 13). Refasten the terminal caps.  
For this type of connection, loosen  
the knobs on the terminals and  
insert the exposed (bare) ends of  
each speaker wire into the hole  
exposed on the terminal shaft  
( + to +, – to – ) (see Figure 13).  
Refasten the knob on each termi-  
nal so that a snug connection is  
achieved. Do not apply excessive  
force and do not overtighten. To  
avoid a short circuit, trim off any  
excess wire that is not in contact  
with the binding post contact  
surfaces.  
Figure 10. Removing  
shorting bars.  
(Bi-Wire or Bi-Amp  
Connection Method)  
A M P LIF IE R  
C O N N E C T IO N S  
IMPORTANT: Turn all amplifiers off  
before connecting or disconnect-  
ing Project K2 S5800 loudspeakers.  
Making connections while an  
amplifier is operating could seri-  
ously damage the loudspeaker  
system and void the warranty. All  
amplifiers must also be turned off  
before connecting or disconnect-  
ing cables at the amplifier or pre-  
amplifier inputs.  
Project K2 S5800 terminals are  
also designed to accept spade or  
banana-type connectors which are  
fastened to the ends of the wires  
and, in turn, are attached to the  
terminal posts.  
5800  
K2 S  
TED  
rthridge, CA USA  
o
JBL INCORPORA  
8500 Balboa Blvd. N  
High Frequency  
All connections between the amp-  
lifier(s) and the Project K2 S5800  
loudspeaker system are made at  
the terminals located on the back  
of the enclosure (see Figures 10  
through 13). The left-hand termi-  
nals (black stripe) are negative,  
and the right-hand terminals (red  
stripe) are positive. These corre-  
spond to the negative and positive  
conductors in the speaker wire.  
Low Frequency  
W IR IN G  
C O N F IG U R A T IO N S  
As mentioned earlier, the Project  
K2 S5800 speakers may be con-  
nected to the amplifier(s) by one  
of three methods: passive, bi-wire  
and bi-amp. Each method, des-  
cribed below, has its own advan-  
tages, and the Project K2 loud-  
Figure 11. Connecting speaker wires  
using banana plugs.  
(Passive Connection Method)  
15  
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T H E W O O F E R G R ILLE :  
In all cases, the left and right  
amplifiers for each section must be  
identical. Make sure that the input  
sensitivity of the amplifier for each  
section is equal, or that input level  
controls are provided to maintain  
the proper low-to-mid/high bal-  
ance. If two identical stereo ampli-  
fiers are used, one may be located  
near each loudspeaker and drive  
low- and high-frequency sections  
through short wire runs.  
The grilles on the Project K2 S5800  
loudspeaker system have been  
designed for maximum acoustical  
transparency. For the most critical  
listening, however, JBL suggests  
removing the grilles. The grilles are  
connected by four pins inserted  
into four holes on the face of  
the cabinet.  
5800  
K2 S  
TED  
rthridge, CA USA  
o
JBL INCORPORA  
8500 Balboa Blvd. N  
High Frequency  
Low Frequency  
To remove each grille, hold the  
grille edges with your fingers and  
gently pull the grille away. Do not  
use any tools to pry the grille off;  
this will damage the finish of the  
cabinet. To replace the grille, posi-  
tion the mounting pins over the  
holes and gently press until the  
grille meets the enclosure.  
NOTE: Input polarity must be the  
same for both the low- and high-  
frequency sections. Some ampli-  
fiers invert polarity. If the polarity is  
reversed to one section, a discon-  
tinuity in response will be apparent  
in the crossover region. If a prob-  
lem is suspected, reverse the  
polarity to either low- or high-  
frequency sections of both  
Figure 12. Connecting speaker wires  
using banana plugs.  
(Bi-Wire or Bi-Amp Connection Method)  
B I- W IR E C O N N E C T IO N  
M E T H O D  
P R O J E C T K 2 F IN A L  
C H E C K LIS T  
The bi-wire connection method  
requires one amplifier and two  
sets of speaker wires. By removing  
the shorting bars, connections may  
be made to the individual network  
sections using four conductors,  
one for each of the four terminals  
(see Figures 10, 12 and 13).  
loudspeakers. Amplifier polarity  
markings may not ensure correct  
polarity connections.  
Connect and plug in all other  
system electronics.  
Check all connections. If bi-  
amping or bi-wiring, make sure  
both shorting bars are removed.  
• Make sure the controls on the  
crossover panel are correctly set.  
The system is now ready for use.  
The Project K2 S5800 speaker  
system is fully functional as soon  
as it is set up. The amplifier power  
should not exceed 300 watts (RMS).  
There may be some subtle tonal  
changes in bass output over the  
first week to 10 days of operation.  
These are caused as the move-  
ment of the low-frequency drivers  
becomes more fluid and the parts  
settle in. This process is completely  
normal with transducers of  
B I- A M P C O N N E C T IO N  
M E T H O D  
The optimal method of powering  
the Project K2 system is with  
two amplifiers, one for the low-  
frequency and one for the high-  
frequency unit, and a crossover  
network. Since each amplifier  
drives only one speaker, this  
method allows the user to select  
amplifiers with the desired sonic  
character for low and high fre-  
quencies (see Figures 10, 12  
and 13).  
this caliber.  
Four identical amplifiers (or two  
dual channel units) may be used,  
although specialized low- and  
high-frequency amplifiers offer  
clear advantages. The Project K2  
specialist dealer can recommend  
the amplification that will best suit  
individual needs.  
Figure 13. Connecting speaker wires  
using bare-wire method.  
16  
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C H A P T E R 8 – P R O J E C T K 2 S 5 8 0 0 C A R E A N D M A IN T E N A N C E  
The Project K2 S5800 loudspeaker  
system is sprayed in a poly-  
urethane finish and requires no  
maintenance other than an occa-  
sional dusting with a soft, dry, lint-  
free cotton cloth.  
Should you wish to clean the  
To access the battery, unscrew  
the battery cover at the top of  
the terminal board and remove it.  
Always use a 9V, rectangular  
006P-type battery and install it  
with the proper polarity.  
woofer surfaces, use a soft, dry  
paint brush to carefully sweep the  
dust away. Never use a damp cloth.  
JBL’s unique Charge-Coupled  
Linear Definition system is used  
for the crossover network, in  
which a direct (DC) bias current is  
constantly applied to the capaci-  
tors in the network circuit to acti-  
vate the elements, eliminating  
crossover distortion at zero elec-  
tric potential.  
The horns may also be wiped with  
a soft cloth. Treat the surface very  
carefully to avoid scratching the  
finish. To remove fingerprints and  
smudges, apply a small amount of  
ammonia-free window cleaner to  
the cloth and gently clean the  
surface.  
The battery included in the  
shipped system is for testing  
purposes only. We recommend  
that you replace it as soon as  
possible.  
All wiring connections should be  
inspected and cleaned or remade  
periodically. The frequency of  
maintenance depends on the met-  
als involved in the connections,  
atmospheric conditions, and other  
factors. Consult the Project K2  
specialist dealer for specific  
recommendations.  
The battery has a life of about two  
years. Even if the battery voltage  
drops, the network will continue  
to function. However, in order to  
maintain superior sound quality,  
we recommend that you test and  
change the battery once a year.  
Note that the battery may leak  
and damage the holder and other  
parts if it is left in the speaker for a  
long period after exceeding the  
suggested duration.  
Never use any abrasive cleaners  
or chemicals to clean the enclo-  
sure. If the enclosure becomes  
perceptibly scratched or other-  
wise damaged, consult a qualified  
furniture repair shop.  
The grilles should never be  
washed in water, which might  
cause discoloration or sagging.  
The grilles may be cleaned using  
a vacuum cleaner with the suc-  
tion set extremely low.  
17  
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C H A P T E R 9 – T R O U B LE S H O O T IN G A N D S E R V IC E G U ID E  
IF T H E S P E A K E R S  
S O U N D Q U A LITA T IV E LY  
D IF F E R E N T IN A N  
Project K2 S5800 loudspeakers  
are designed to provide years of  
trouble-free service.  
• Switch the speaker wires  
between the speaker with the  
problem and one that is working  
correctly. If the problem remains  
in the same speaker, then the  
fault is in the loudspeaker. In  
this event, consult your Project  
K2 S5800 specialist dealer for  
assistance. If, however, the  
problem has moved to the other  
speaker, then the cause is in  
either a cable or an electronic  
component.  
IN D E F IN A B LE W A Y :  
If you are experiencing difficul-  
ties, we suggest you check these  
possibilities before contacting  
your Project K2 specialist dealer  
for assistance.  
Test the batteries and replace  
them if necessary.  
NOTE: The batteries should be  
tested once a year in any event.  
IF T H E R E IS N O S O U N D  
F R O M A N Y O F T H E  
S P E A K E R S :  
Check that the receiver/amplifier  
is on and a source is playing.  
IF T H E S Y S T E M P LA Y S  
A T LO W V O LU M E S B U T  
S H U T S O F F A S V O LU M E  
IS IN C R E A S E D :  
Check all wires and connections  
between the receiver/amplifier  
and the speakers. Make sure all  
wires are connected, and are  
not frayed, cut or punctured. No  
wires or strands should be touching  
each other or the shorting bars  
connected to other terminals.  
Check all wires and connections  
between the receiver/amplifier  
and the speakers. Make sure all  
wires are connected, and are not  
frayed, cut or punctured. No wires  
or strands should be touching each  
other or the shorting bars con-  
nected to other terminals.  
Review proper operation of your  
receiver/amplifier.  
• If more than one pair of main  
speakers is being used, check the  
minimum impedance require-  
ments of your receiver/amplifier.  
IF T H E R E IS N O S O U N D  
C O M IN G F R O M O N E  
S P E A K E R :  
Check the “Balance” control on  
your receiver/processor.  
Check all wires and connections  
between the receiver/amplifier  
and the speakers. Make sure all  
wires are connected, and are not  
frayed, cut or punctured. No wires  
or strands should be touching each  
other or the shorting bars con-  
nected to other terminals.  
IF T H E R E IS LO W (O R  
N O ) B A S S O U T P U T:  
• Make sure the connections to  
the left and right speaker termi-  
nals have the correct polarity.  
• In digital surround modes,  
consider adding a powered  
subwoofer to play the LFE (low-  
frequency effects) channel of  
the program.  
• In digital surround sound modes,  
make sure that the receiver/  
processor is configured so that  
the speaker in question is  
enabled.  
18  
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K 2 S 5 8 0 0 S P E C IF IC A T IO N S  
P O W ER H A N D LIN G :  
3 0 0 W (RM S )**  
FREQ U EN C Y RES P O N S E:  
LO W -FREQ U EN C Y EXTEN S IO N :  
S EN S ITIVITY:  
5 0 H z – 4 0 k H z (–6 d B)  
2 8 H z (–1 0 d B)  
9 5 d B (2 .8 3 V/ 1 m )  
8 O h m s  
N O M IN A L IM P EDA N C E:  
C RO S S O VER FREQ U EN C Y:  
LO W -FREQ U EN C Y D RIVERS :  
8 0 0 H z, 1 0 k H z  
D u a l 1 2 -in c h (3 0 0 m m ) Ke v la r-c o m p o s it e  
c o n e w o o fe rs (1 2 0 0 Fe )  
H IG H -FREQ U EN C Y D RIVER:  
U LTRA H IG H -FREQ U EN C Y D RIVER  
D IM EN S IO N S (H X W X D ):  
W EIG H T:  
3 -In c h (7 5 m m ) a lu m in u m c o m p re s s io n  
d riv e r (4 3 5 A l) in 1 -1 / 2 -in c h (3 8 m m )  
t h ro a t Bi-Ra d ia l h o rn  
1 -In c h (2 5 m m ) p u re -t it a n iu m c o m p re s s io n  
d riv e r (0 4 5 Ti) in 0 .3 5 -in c h (8 .9 m m )  
t h ro a t Bi-Ra d ia l h o rn  
4 9 " x 1 7 " x 1 6 -1 / 4 " (1 6 -3 / 4 " w it h g rille )  
1 2 4 5 m m x 4 3 2 m m x 4 1 3 m m  
(4 2 5 m m w it h g rille )  
1 8 5 lb (8 4 k g ) p e r s p e a k e r  
J B L A N D H A R M A N IN T E R N A T IO N A L  
JBL is part of the Harman  
International audio companies,  
a group with a common purpose:  
combining technology with a love  
of music to manufacture audio  
products that provide new levels  
of satisfaction, performance  
and value.  
nies, which includes one of the  
worlds most advanced manufac-  
turing facilities. The result of this  
teamwork is that JBL’s renowned  
excellence in engineering is suc-  
cessfully carried through to each  
individual product, regardless of  
its application or price range.  
JBL continually engages in  
research related to product  
development and improvement.  
Because of this, new materials,  
production methods and design  
refinements will be introduced  
into existing products without  
notice. For this reason, any  
current JBL product may differ  
in some respect from its pub-  
lished description, but will  
always equal or exceed the  
original design specifications  
unless otherwise stated.  
To promote diversity and creativity,  
JBL operates independently in  
research and development. When  
it comes to translating the results  
of these efforts into actual con-  
sumer and professional products,  
JBL draws on the full combined  
strength of the Harman compa-  
As new audio concepts and tech-  
nologies are pioneered, the part-  
nership of JBL and Harman  
International guarantees that con-  
sumer and professional audio  
users everywhere will be able to  
enjoy their full range of benefits.  
*Trademark of Dolby Laboratories.  
DTS is a registered trademark of Digital Theater Systems, Inc.  
JBL and Bi-Radial are registered trademarks of Harman International Industries, Incorporated.  
SonoGlass, Aquaplas, Symmetrical Field Geometry and Charge-Coupled Linear Definition are trademarks of  
Harman International Industries, Incorporated.  
Monster Cable is a registered trademark of Monster Cable Products, Inc.  
Kevlar and Nomex are registered trademarks of E.I. du Pont de Nemours and Company.  
Styrofoam is a trademark of The Dow Chemical Company.  
**The maximum recommended amplifier power rating will ensure proper system headroom to allow for occasional peaks.  
We do not recommend sustained operation at these maximum power levels.  
19  
All features and specifications are subject to change without notice.  
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®
P R O S O U N D  
C O M E S H O M E  
JBL Consumer Products  
2003 Harman International Industries,  
©
Incorporated  
Part No. 339519-001  
A Harman International Company  
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