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 owner’s 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
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 owner’s 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
that’s 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, JBL’s 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 Paragon’s 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. JBL’s
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
Paragon’s 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 SonoGlass™ material, 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
today’s 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
listener’s 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 JBL’s pro-
prietary Charge-Coupled Linear
Definition™ topology, 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 enclosure’s 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 Styrofoam™ end
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 loudspeaker’s coupling sys-
tem, along with the speaker’s
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
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e
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D
. N
E
T
rid
rth
A
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R
B
O
a
o
P
o
R
lb
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O
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IN
y
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5
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8
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q
0
re
0
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ig
H
5800
K2 S
q
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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
world’s 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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