Fender Speaker 1211 MK III User Manual

Mk III SERIES  
PROFESSIONAL  
LOUDSPEAKER  
ENCLOSURES  
Reference / Owner’s Manual  
for 1211 Mk III / 1225 Mk III  
/ 1226 Mk III  
P/N 053566 REV C  
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MK III  
PROFESSIONAL LOUDSPEAKER  
SYSTEMS  
INTRODUCTION  
Thank you for purchasing a Mk III Series Loudspeaker  
System from Fender® Pro Audio. We are sure you  
will find it both a unique and effective sound  
reinforcement product, providing years of trouble-  
free service day in and day out.  
All Wood Construction with Sturdy  
Dado Joints  
High Current 1/4” Phone Jacks and  
Neutrik SpeakonConnectors  
MkIIISeriesLoudspeakerSystemsareprofessional,full-  
range, two-way, compact loudspeakers designed for  
the most demanding permanent or portable sound  
reinforcement requirements. Moreover, thesespeakers  
are ideal for use as a two-way system or as the mid /  
high pack in a three-way set-up incorporating a Fender  
subwoofer loudspeaker system.  
Titanium Diaphragm Horn  
Active / Passive Crossover  
Operation  
With a wide response, low distortion and controlled  
directivity, Mk III Series Loudspeaker Systems are  
designed to form the basis of everything from a small  
public addresssystemtothenightlyrigorsofa“working  
band’s” sound system. After moisture sealing, the Mk  
III Loudspeaker cabinets are covered in tough black  
indoor/outdoor synthetic carpet covering. Likewise,  
MkIIILoudspeaker cabinetsalsofeaturemetalcorners  
and rubber feet for a longer life and lasting looks.  
Metal Corners and Rubber Feet  
Tough Indoor / Outdoor Synthetic  
Carpet Covering  
Only the finest components are used to provide  
maximum efficiency and response. In order to more  
fully understand the operational characteristics of  
your Mk III Series Loudspeaker enclosure, please  
read through this operational user’s guide.  
CAUTION: Almost all speakers produce strong  
magnetic fields which may interfere with the  
normal operation of nearby electronic devices,  
includingtelevisionsandcomputervideomonitors.  
To reduce or eliminate interference, increase the  
distance between this product and other nearby  
electronic devices.  
3
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SPEAKER WIRING AND CONNECTIONS  
Parallelorseriesarethetwobasicwayswhichmultiple Keep in mind, power and audio signal cables are the  
speakerscanbeconnectedtoasinglepoweramplifier. most common sources of sound system failure. Well  
When speakers are connected in parallel, their made and carefully maintained cables are essential to  
combined impedance decreases. For speakers wired thereliabilityoftheentiresoundsystem. Iflongspeaker  
in series the opposite is true, their combined cablesarerequired,itisimportanttoensurethecable‘s  
impedance increases. Thus, when speakers are wired gauge is sufficient to transfer all of the available  
inseries,higherimpedancespeakersintheseriesdraw amplifier power to the speakers rather than absorbing  
more power from the amplifier than do speakers in the the power itself. As a rule of thumb, larger wires are  
series with lower impedances. When speakers are better as they conduct more power to the speakers  
wired in parallel, the opposite is true. Higher (larger wire has smaller gauge numbers).  
impedance speakers will draw less power from the  
amplifier than lower impedance speakers will draw.  
Below are two charts listing speaker wire gauges and  
recommendations for best results.  
At Fender®, we recommend connecting multiple  
speakers in parallel for several reasons. First, if one  
speakerfails,theotherswillcontinuetooperate. Second,  
because in a series connection one speaker affects the  
output of the other speakers, unpredictable frequency  
response is a concern. Third, most speaker cabinets  
are already wired for parallel connections making parallel  
connections the most common wiring method.  
SPEAKER WIRE GAUGE  
100'-UP  
10  
12  
12  
14  
14  
16  
(30.5 m-UP)  
50'-100'  
(15.25-30.5 m)  
Below are two charts demonstrating how to calculate  
both parallel and series impedance.  
*25'-50'  
14 *16 18  
(7.60-15.25 m)  
PARALLEL IMPEDANCE  
10'-25'  
16 18  
18 18  
18  
1
Z
(3.05-7.60 m)  
=
p
1
Z
1
Z
1
Z
+
...  
1
2
n
0'-10'  
18  
16* 5.3*  
8Ω  
8
(0.00-3.05 m)  
4
5.3  
+
-
+
-
4  
*816Ω  
A
B
8* 16Ω  
SPEAKER IMPEDANCE [z]  
Cabinet A  
+
-
*Example - If the speaker wire length  
required is between 25-50 feet (7.60-  
15.25 meters) and the speaker  
impedance is 8, the minimum  
recommended speaker wire gauge is 16.  
Impedance  
*Example- Cabinet A is 8 ohms. Cabinet B is  
16 ohms . The total impedance when connected  
in parallel is:  
1
Z
=
= 5.3 ohms.  
p
1
8
1
16  
+
Cross-  
Resistance in per foot  
Section  
AWG  
[mm2]  
0.83  
(30.5 cm) @ 77º F (25º C)  
SERIES IMPEDANCE  
18  
.00651  
Z
=
Z
Z
Z
...  
+
18 20* 24 32  
810 12 16 24  
16*  
s
1
2
n
.00409  
.00258  
.00162  
.00102  
.00064  
16  
14  
1.32  
2.10  
3.32  
5.27  
8.38  
+
-
A
4Ω  
2Ω  
6
4
8
6
12 20  
10 18  
+
-
12  
10  
8
B
24* 816Ω  
+
-
Cabinet A  
Impedance  
*Example- Cabinet A is 4 ohms. Cabinet B is  
16 ohms. The total impedance when  
connected in series is 4 + 16 = 20 ohms.  
4
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Mk III SERIES SPEAKER CONNECTIONS  
SETUP SUGGESTIONS  
In normal operation (using the passive internal  
The placement of any speaker can dramatically affect  
crossover), the 1/4" jacks and the Speakonits sound. Thus, there are several considerations to  
review when placing loudspeakers.  
Connectors are wired in parallel allowing any one of  
the connectors to be used as an input and any other  
as an output. This allows "daisy chaining" of multiple  
loudspeakers, eliminating the need for several long,  
cumbersome runs of speaker cable. During normal  
mode, the connections are as follows:  
First, the range of the horizontal coverage should be  
determined. The speaker may be used as a single unit,  
as part of a pair, or as part of a group of widely spaced  
enclosures. In any case, maximum horizontal  
coverage will be desired. Examples of these types of  
setups are shown. The horn in this configuration has  
a horizontal coverage angle of 90º and a vertical  
coverage of 40º.  
Polarity  
Phone Jack  
Speakon™  
Positive (+)  
Negative (-)  
Tip  
Sleeve  
1+ and/or 2+  
1- and/or 2-  
When the switch on the back of the speaker is in the  
bi-amp mode, the internal crossover and high  
frequency attenuator are disabled. Thus, an external  
crossover must be used with the speaker and two  
channels of power amplification will be required: one  
for the low frequencies and another for the high  
frequencies. In bi-amp mode, the connections are as  
follows:  
Stage  
Audience  
Phone Jacks  
Two speakers arranged as a mono or stereo  
pair requiring maximum horizontal coverage  
Left  
Frequency  
Polarity  
Right  
Speakon  
N/A  
Lows  
Lows  
Highs  
Highs  
Positive (+)  
Negative (-)  
Positive (+)  
Negative (-)  
Tip  
1+  
1-  
2+  
2-  
N/A  
Sleeve  
N/A  
30º  
Tip  
Sleeve  
N/A  
Mk III  
Cabinet  
Mk III  
Cabinet  
IMPORTANT: If the crossover switch is set to  
external, DO NOT plug a full range signal into the  
High Frequency input. Doing so will destroy the  
compression driver.  
Two speakers in a "loose pack" array  
requiring maximum horizontal  
coverage  
NOTE:WhensettingupyourMkIII Seriesenclosures,  
be sure to place the cabinets in such a way as to  
minimize overlapping radiating patterns.  
A second consideration is for feedback and bass  
performance. If the speaker is placed near a large, flat  
wall, the bass output will increase by approximately 6  
dB. Placing the speaker near a wall can cause  
feedback. If this occurs, the speaker must be moved.  
A third consideration is to what degree the speaker  
should be "heard and not seen", especially in  
permanent installations. Remember, where the  
speaker cabinets are placed will effect both their tone  
and radiating patterns.  
5
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BI-AMP OPERATION  
UNPOWERED MIXER  
MONITOR  
OUT  
MAIN  
OUT  
For versatility and increased headroom, some users  
may choose to use an active electronic crossover /  
processor, such as the Fender PCN-2 or PCN-4, with  
the system. The electronic crossover takes the place  
of the internal crossover of the speaker system. The  
"Normal / Bi-Amp" switch on the back of the cabinet  
must be set to the "Bi-Amp" position. Always check  
to ensure the internal/external crossover switch  
which selects passive or biamp operation is in the  
correct position prior to use. Failure to do so may  
damage the speakers. A typical set-up of a bi-amp  
configuration is shown at right.  
IN  
PCN-2 ELECTRONIC CROSSOVER  
HIGH  
OUT  
LOW  
OUT  
For those situations requiring a subwoofer, Mk III  
loudspeakerscanstillbeusedifathree-wayelectronic  
crossover is used. An example of this configuration is  
shown on the next page.  
A In  
B In  
It is strongly recommended that a fourth-order  
"Linkwitz-Riley" or a digital FIR fourth-order active  
crossover be used. The crossover frequency, for both  
the 1225 Mk III / 1226 Mk III, should be set at  
approximately 2200 Hz, the 1211 Mk III should be set  
at approximately 1200 Hz. Since the output sensitivity  
of the compression driver is higher than that of the  
woofer, the high frequency output of the system must  
be decreased at either the crossover (if such a control  
is provided) or at the power amplifier(s) that are used  
for the high frequencies.  
B Out  
Hi  
A Out  
SPL-9000 POWER AMP  
Hi  
SWITCHES  
SET TO  
Mk III  
Mk III  
Cabinet  
EXTERNAL  
Cabinet  
CROSSOVER  
Low  
Low  
Speakers operated in a bi-amp configuration  
CAUTION: Be sure to connect the high frequencies  
and low frequencies to their correct inputs  
indicated on the back of the speaker cabinets.  
CARPET COVERING CARE  
Mk III Series cabinets are covered in a  
tough, black indoor/outdoor synthetic  
carpet for long life and lasting good  
looks. To clean the carpet covering, use  
a sponge and a light soapy water  
solution to wipe away any smudges or  
dirt. For stubborn stains, a slightly more concentrated  
soapy solution or carpet shampoo with a brush may  
be used. Avoid spilling liquids on the input panel, grille  
and speakers.  
6
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USING A 3-WAY ELECTRONIC CROSSOVER WITH MK III ENCLOSURES  
UNPOWERED MIXER  
MONITOR  
OUT  
MAIN  
OUT  
INPUT  
HIGH  
OUT  
MID  
OUT  
LOW  
OUT  
PCN-4 ELECTRONIC CROSSOVER  
B In  
A In  
A Out B Out  
SPL-9000 POWER AMP  
Hi  
Hi  
SWITCHES SET  
TO EXTERNAL  
CROSSOVER  
Mk III  
Cabinet  
Mk III  
Cabinet  
Low  
Low  
A In  
Bridge Out  
SPL-9000 POWER AMP  
Bridge Mono Mode  
215s  
Speakers operated in a bi-amp configuration with  
a subwoofer (tri-amping)  
7
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SPECIFICATIONS  
MODEL  
1211 Mk III  
1225 MK III  
1226 MK III  
PART NUMBER  
CABINET  
071-1211-200  
071-1225-200  
071-1226-200  
5/8" (1.6 cm)  
Particle Board  
3/4" (1.9 cm)  
Birch Plywood  
3/4" (1.9 cm)  
Birch Plywood  
CONNECTIONS  
(2) 1/4" Phone Jacks  
(2) 1/4" Phone Jacks  
(2) SpeakonJacks  
(2) 1/4" Phone Jacks  
(2) SpeakonJacks  
DRIVER  
Low:  
High:  
15" (38 cm) woofer  
15" (38 cm) woofer  
15" (38 cm) woofers  
3" (7.6 cm) voice coil  
2.5" (6.4 cm) voice coil 3" (7.6 cm) voice coil  
1" (2.5 cm) Exit Throat  
Titanium Diaphragm  
1" (2.5 cm) Exit Throat  
Titanium Diaphragm  
1" (2.5 cm) Exit Throat  
Titanium Diaphragm  
FREQUENCY On Axis  
RESPONSE  
+/- 3 dB:  
50 Hz to 15kHz  
95 dB  
50 Hz to 15kHz  
100 dB  
38 Hz to 15kHz  
100 dB  
ON AXIS  
SPL @  
SENSITIVITY 1W/1m:  
COVERAGE  
PATTERN  
Horizontal  
Vertical  
90º @ 5 kHz  
40º @ 5 kHz  
90º @ 5 kHz  
40º @ 5 kHz  
90º @ 5 kHz  
40º @ 5 kHz  
POWER RATING  
300W program  
150W EIA  
400W program  
200W EIA  
800W program  
400W EIA  
NOMINAL IMPEDANCE  
8  
8Ω  
4Ω  
CROSSOVER FREQUENCY  
1200 Hz  
2200 Hz  
2200 Hz  
DIMENSIONS Height  
28.6" (72.6 cm)  
20.3" (51.6 cm)  
28.6" (72.6 cm)  
19.8" (50.3 cm)  
19.2" (48.8 cm)  
46.5" (118.1 cm)  
Width  
Depth  
25"  
(63.5 cm)  
(51.3 cm)  
14"  
(35.6 cm)  
20.2  
WEIGHT  
68 lbs. (31 kg)  
84 lbs. (38 kg)  
126 lbs.(57 kg)  
A PRODUCT OF:  
FENDER MUSICAL INSTRUMENTS CORP.  
CORONA, CA 91720 USA  
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