JBL MS-A1004 User manual

USER GUIDE
MS-A1004
Digital signal processing amplier

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MS-A1004
DIGITAL SIGNAL PROCESSING AMPLIFIER
PLEASE READ THIS BEFORE YOU BEGIN!
JBL® MS Series ampliers include many features not found on conventional car audio ampliers. Also, the setup procedure
for MS Series ampliers is different from that of conventional car audio ampliers. The following overview of features and
functions will help you plan a great system and make the best use of the MS-A1004’s innovative features.
About the digital signal processing (DSP) included in MS Series ampliers:
All of the signal processing in MS Series ampliers is digital. Digital signal processing, along with the intuitive controls and
display included in MS Series ampliers, makes precise setup easy. Only the input-level controls are analog.
Will my settings be lost if I disconnect the amplier or the car’s battery?
No. All of the DSP settings are stored in nonvolatile memory, so no settings will be lost if power is removed from the amplier.
Why are the input-level controls analog?
In order to provide the best signal-to-noise ratio and to maximize the resolution of the digital-to-analog conversion, the
maximum input signal level to the analog-to-digital (A/D) converters must be precisely set. This must be an analog control.
The included setup CD and the procedure described in this manual make setting the level simple and precise. Once the
input-level control is set, the control should not be used to “tune” the system. Use the digital output-level control to adjust the
relative level between amplier channels to tune the system.
FCC REGULATIONS
FCC INFORMATION FOR USERS
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may
not cause harmful interference; and (2) this device must accept any interference received, including interference that may
cause undesired operation.
RADIO AND TELEVISION INTERFERENCE
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the
FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will
not occur in a particular installation. If this equipment does not cause interference to radio or television reception, which can
be determined by turning the equipment off and then on, the user is encouraged to try to correct the interference by one or
more of the following measures:
• Increase the separation between the equipment and receiver.
• Connect the equipment to a different outlet so that the equipment and receiver are on different branch circuits.
• Consult the dealer or an experienced radio/TV technician for help. Changes or modications not expressly approved
by JBL could void the user's authority to operate the equipment.
IC STATEMENT AND WARNING
This Class B digital apparatus complies with Canadian ICES-003. Cet appareil numérique de la classe B est conforme à la
norme NMB-003 du Canada.
IMPORTANT NOTE FOR ALL ELECTRONIC PRODUCTS:
Before inserting or unplugging audio cables from the source device's headphones or line-level output jacks, it is good
practice to turn off the device rst. This will prolong the life of your unit, help protect your device from static electricity
and prevent potential damage.
1Input-Level Control
Used to match the input sensitiv-
ity to the signal voltage for proper
analog-to-digital conversion. See
“Setting the Input Level, and En-
abling or Disabling Signal-Sensing
Turn-On” for details. DO NOT use
these controls for setting the relative
output level of amplier channels!
2Input Signal Selector
Lo/Hi/Hi2 sets the input
voltage and impedance range. See
“Setting the Input Level, and
Enabling or Disabling Signal-Sens-
ing Turn-On” and “The factory-
installed system in my car shows a
‘speaker disconnected’ message,
or it fails to play when a speaker is
disconnected or when an amplier
is connected to its output. What
should I do?” for details.
Audio Inputs
Use RCA audio cables for preamp-
level connections or the included
RCA-to-bare-wire adapters for
speaker-level input connections.
4
Summed Pass-Through Outputs
Input channels 1 and 3 are com-
bined and sent to one output.
Inputs 2 and 4 are combined and
sent to the other output.
5Onboard Fuses
2 x 30A ATC type.
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Channels 1 and 2 Display Panel
Displays the settings of channels 1
and 2 of the amplier.
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Channels 3 and 4 Display Panel
Displays the settings of channels 3
and 4 of the amplier.
8User Controls
Allows adjustment of amplier set-
tings. See “MS-A1004 User
Controls” for details.
9+12V Power Input
Connect to vehicle battery with a
60A fuse within 18 inches (45.7cm)
of the positive battery terminal.
10 Remote Turn-On Input
Connect switched +5V to +12V.
NOTE: The MS-A1004 also in-
cludes signal-sensing turn-on. You
may choose the turn-on method
during setup. See “How does the
digital input mixer work?” and “MS-
A1004 Connections” for details.
11 Chassis Ground Input
Connect to a paint-free spot on the
vehicle chassis.
12 Speaker Outputs
MS-A1004 FEATURES
3

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Why are the signal inputs and speaker outputs numbered rather than labeled “left” and “right”?
MS Series ampliers are designed to make integration into any system simple and straightforward. The amplier
includes a digital input-mixer control, which eliminates the need for Y adapters and allows any pair of output
channels to be driven by a mono or stereo signal for maximum system-building exibility. Labeling the channels
“left” and “right” would be confusing in some applications.
How does the digital input mixer work?
The signals from each of the RCA-type input connectors are converted into digital signals and sent to the digital
signal processor. Inside the DSP, those signals are routed to the speaker output pairs, according to the selections in
the input mixers. There’s one input mixer for output channels 1 and 2 (upper display) and another mixer for channels
3 and 4 (lower display). For example, selecting “1” in the input mixer for channels 1 and 2 will send only the signal
connected to Input Jack 1 to output channels 1 and 2 (see Figure 1). This is useful for sending a mono signal to a
pair of channels.
Figure 1.
Selecting “1, 2” in the input mixer for channels 1 and 2 will send the signal that is connected to Input Jack 1 to
Output 1 and the signal connected to Input Jack 2 to Output 2 (see Figure 2). This is designed for stereo signals.
Figure 2.
If you want all four output channels to receive the same signal, connect that signal to Input Jack 1 (or 3) and select “1”
(or “3”) in both input mixers. If you want all four channels to receive separate signals, choose “1, 2” in one input mixer
and “3, 4” in the other. Many system congurations are possible and Y adapters are never needed. See “System
Diagrams” for more examples.
Does the amplier include speaker-level and line-level inputs?
Yes, any input signal can be used with MS Series ampliers. If your head unit includes RCA-type outputs, simply
plug them into the RCA-type input jacks. If your head unit does not include RCA-type outputs (as is the case with
all factory-installed systems), use the included RCA-to-bare-wire adapters. Be sure to observe proper polarity. The
signal inputs are differential and will accept any signal from 100mV (low-level) to 15V (high-level). There’s no need to
use separate adapters or to precisely determine the signal voltage or type. MS Series ampliers’ onboard tools and
the setup procedure described later in this manual will make optimizing the conguration simple.
The factory-installed system in my car shows a “speaker disconnected” message, or it fails to play when
a speaker is disconnected or when an amplier is connected to its output. What should I do?
MS Series ampliers include three Input Signal Selector positions: Lo, Hi and Hi2. The Hi2 position includes a circuit
designed to fool the factory system into “seeing” a speaker connected to its output. If your car has one of these
systems, set the Input Signal Selector to Hi2 and follow the rest of the setup instructions.
My factory-installed head unit does not include a remote-turn-on wire. What should I do?
MS Series ampliers include signal-sensing turn-on. A remote-turn-on connection is never required. The amplier will
sense the presence of an audio signal at its inputs and turn on automatically. A few minutes after the signal stops or
after the radio is turned off, the amplier automatically will turn itself off. During the delay, the amplier draws very little
current so the vehicle’s battery won’t be drained.
DSP
Input 1
1
Output 1
Input 2 Output 2
DSP
Input 1
1,2
Output 1
Input 2 Output 2

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What is the best procedure for choosing a crossover frequency and slope (see Figures 3a and 3b)?
A crossover is a pair of lters that divide the audio signal into low frequencies (bass) and high frequencies (treble) so that
only the appropriate signals are sent to speakers that are designed to reproduce a limited range. For example, a tweeter
is designed to play only high frequencies, and too much bass can cause damage. A woofer is designed to make only low
frequencies and does a poor job of reproducing high frequencies. A midrange speaker is designed to play frequencies in
between bass and treble (midrange frequencies). Figure 3a shows how these speakers would be divided up across the
20Hz – 20kHz range, using the appropriate lters (crossovers).
Figure 3a. Figure 3b.
When setting a crossover between a low-frequency speaker and a high-frequency speaker, the high-pass lter (HPF)
frequency should be chosen to keep the high-frequency speaker safe. The low-pass lter (LPF) should be set so that the
hand-off provides smooth response in the region near the crossover frequency. When implementing a crossover between
speakers, use steep (24dB/octave) slopes for both lters to maximize the amount of low frequencies that the high-fre-
quency speaker can handle safely and to minimize the interaction of the sound between the low-frequency speaker and
the high-frequency speaker. Figure 3b shows the differences of 6dB, 12dB and 24dB/octave lter slopes.
If I should use 24dB/octave slopes for crossovers, why do MS Series ampliers include 6dB and 12dB/octave
slopes too?
If your MS Series amplier will be used to power a subwoofer in a vented (ported) box, use a 12dB/octave high-pass
lter to protect the subwoofer from damage by limiting the amount of bass that’s sent to the subwoofer below the tuned
frequency of the box. A 6dB/octave high-pass lter can be useful in slightly limiting the amount of bass sent to full-range
speakers in systems where no subwoofer will be used, limiting the amount of high frequencies sent to rear speakers.
Why does each pair of channels include a high-pass lter (HPF) and a low-pass lter (LPF)?
In some systems, it can be useful to limit the high frequencies and low frequencies that are sent to a loudspeaker. Use
the HPF and the LPF together to create a band-pass lter for a midrange speaker in systems where the woofer, midrange
and tweeters will be powered by individual amplier channels. When using the lters to create a band-pass lter, the HPF
can never be set to a higher frequency than the LPF. For example, if the LPF is set to 200Hz, the HPF can be set to any
frequency below 190Hz. This protection prevents errors in setup.
Do MS Series ampliers include a subsonic or infrasonic Figure 4.
lter for use with vented enclosures?
Yes. If you want to use a subsonic or infrasonic lter with your
subwoofer, congure the channel’s crossover as a band-pass lter.
The low-pass lter will limit the high frequencies that are sent to the
subwoofer and the high-pass lter will be the infrasonic lter. Set the
high-pass lter frequency about 10Hz below the frequency at which
the enclosure is tuned and use a 12dB/octave slope (see Figure 4).
About the MS-WBC wireless bass control (sold separately):
The MS-WBC wireless bass control is designed to make installation easy. The circuit is designed for long battery life, and
a separate, wired connection to +12V is included for those who never want to replace the battery. No wired connection to
the amplier is necessary. The control sends a radio signal to the DSP in the amplier, so the control may be mounted in a
console or under the dashboard and the amplier may be mounted in the trunk or hidden behind a panel.
The amount of bass included in recordings varies greatly, and the ability to adjust the amount of bass between songs or
albums is useful. Unlike conventional remote bass controls, the MS-WBC doesn’t simply increase the level of the ampli-
er’s channels that are connected to the subwoofer. Conventional bass controls adversely affect the crossover between
the subwoofer and the mid-bass or midrange speakers any time they are adjusted. This causes the bass to sound boomy
or muddy when it’s boosted and draws the listener’s attention to the location of the subwoofer (see Figure 5a).
Figure 5a. Figure 5b.
English
Low-Pass
Filter
Band-Pass
Filter
High-Pass
Filter
6dB/oct.
12dB/oct.
24dB/oct.
Subsonic
Filter
Low-Pass
Filter
Crossover Frequency
Constant With Bass Boost
Crossover Frequency
Changes With Bass Boost

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The bass-boost lter in the MS Series ampliers is a shelf lter that boosts or cuts bass below 60Hz, but never above
160Hz. The range of adjustment is +/–10dB. Additionally, the bass boost or cut is sent to all the ampliers with which the
control is paired. The bass control works with the crossover lters to ensure that the proper amount of boost or cut is
sent to the subwoofer and the mid-bass or midrange speakers, so the character and apparent location of bass sounds
remain constant. See Figure 5b for the performance of the MS-WBC (as opposed to that of conventional bass controls,
as shown in Figure 5a).
CAUTION: Installation of car audio components requires experience in performing mechanical and electrical proce-
dures. If you feel you lack the required experience or necessary tools, please have your amplier installed by a qualied
professional technician.
CAUTION: Before installation, disconnect the negative (–) battery terminal to prevent the battery from being drained
while you work on the car and also to prevent damage to the unit.
READ THIS BEFORE STARTING INSTALLATION!
1. JBL MS Series ampliers include many features not found on conventional car audio ampliers. The setup procedure for
MS Series ampliers is different from that of conventional car audio ampliers. Be sure to carefully read and understand
these instructions before attempting installation.
2. At the installation sites, locate and make a note of all fuel lines, hydraulic brake lines, vacuum lines and electrical
wiring. Use extreme caution when cutting or drilling in and around these areas.
3. Choose a mounting location for the amplier inside the passenger or cargo area that will ensure no exposure to mois-
ture. Never mount an amplier outside the car or in the engine compartment.
4. Make sure there is sufcient air circulation at the mounting location for the amplier to cool itself.
5. Mount the amplier securely.

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English
MS-A1004 CONNECTIONS
Power Inputs
1. +12V Power Input
Connect the unit to the vehicle battery using a minimum size of 8 AWG
(8mm²) wire with a 60A fuse placed within 18 inches (45.7cm) of the positive
battery terminal. Be sure to use an insulation grommet at every location where
the power wire will pass through metal.
2. Remote Turn-On Input (Optional to Connect)
No discrete remote-turn-on connection to the MS-A1004 is necessary. If your
head unit includes a remote-turn-on lead and you wish to connect it, connect
the unit to this terminal.
3. Chassis Ground Input
Using at least 8 AWG (8mm²) wire, connect this terminal to a nearby point of
the vehicle’s chassis (sheet metal). Scrape away the paint from the area to
ensure a good connection. Do not ground the amplier to the vehicle’s frame.
Audio Inputs
1. Using RCA Outputs
If the unit that precedes this amplier in the signal chain includes RCA-type
output connectors, connect them directly to the RCA inputs of this amplier.
2. Using Speaker-Level Signals
If the preceding equipment doesn’t have RCA-type connectors, use the RCA-
to-bare-wire adapters included with the MS-A1004. Connect the + signal to
the terminal marked + and the – signal to the terminal marked –.
Pass-Through Audio Outputs (Full-Range)
Input channels 1 and 3 are summed and sent to the top RCA output. Inputs 2
and 4 are summed and sent to the bottom RCA output. Using these outputs,
additional ampliers can be easily added. For example: When using the MS-
A1004 for front and rear speakers, you could use these outputs for a subwoofer
amplier. The outputs are full-range. No high-pass or low-pass lters are applied
in the MS-A1004.
Speaker Outputs
Connect each speaker to the amplier channel that will correspond to the input
used or how it’s assigned. See “Setting the Input Mixer” to learn how to assign
the input signals to the output channel pair. Be sure to observe proper polarity
when connecting the speakers to the outputs.
1. Stereo Connection
Connect the left-channel loudspeaker(s) to the output terminals corresponding
to the left-channel input. Connect the right-channel speaker(s) to the output
terminals corresponding to the right-channel input.
2. Bridged Connection
Connect the positive terminal on the loudspeaker(s) to the positive (+) terminal
on Channel 1 (or 3). Connect the negative terminal on the speaker(s) to the
negative (–) terminal on Channel 2 (or 4).
See “System Diagrams” for examples of system congurations in which the
amplier is most commonly used.
+
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1 x 60A

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Input-Level Settings
Input Setup Mode Active
Input Sensitivity Too High
Input Sensitivity Correct
Input Sensitivity Too Low
Input Channel Mixer
Input Mixer
Indicates which signal
inputs are selected to
feed the channel pair’s
outputs
High-Pass Filter
Slope Frequency
Pairing Conrmation
Bass-Level Controller Pairing*
* The MS-WBC wireless bass controller
is an optional accessory.
MS-A1004 DISPLAY ICONS
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Low-Pass Filter
Frequency
Output Gain Adjustment
Adjustment-Selection Indicator
Protection
Channel ID
Slope
This setting
does not affect
pass-through
output.
Output Gain
Adjustment Active*
Output Gain Level (0 to 80)
*Muted when in “Setup Mode”
When lit, the paramater above
is selected for adjustment.
Amplier Protection
Circuit Engaged
Indicates the amplier channels
affected by the row of settings
to the right in the display. (Chan-
nels 1, 2 use the upper display
and channels 3, 4 use the lower
display.)

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English
MS-A1004 USER CONTROLS
MS-A1004 SETTINGS GUIDE
INITIAL SETUP
Activating the Controls
Press both CCW and CW buttons at the same time for less than three seconds
and release, to activate the controls. The adjustment selector indicator
will light. Use the CCW and CW buttons to move the indicator to the
parameter you wish to adjust. After you’ve made your adjustments and
the controls have been inactive for more than 30 seconds, the selection-
indicator light will go out and the controls will become deactivated to
prevent unintentional adjustment of the amplier’s controls.
Setting the Input Mixer
Once the controls are active, press the CW or CCW button until the input mixer is
selected for channels 1 and 2 (in the upper display) . Turn the rotary control to select
the input connector(s) that will feed output channels 1 and 2. Press the CCW button
once to move the selection indicator to the input mixer for channels 3 and 4 (in the
lower display). Turn the rotary controller to select the input connector(s) that will feed
output channels 3 and 4.
See “System Diagrams” for practical examples.
Setting the Input Level, and Enabling or Disabling Signal-Sensing Turn-On
BEFORE YOU BEGIN
If the factory system to which you have connected your MS Series amplier shows a “speaker
disconnected” error message or fails to provide an output signal, move the Input Signal Selec-
tor to the Hi2 position. It may be necessary to turn the factory-installed head unit or the vehicle
itself off and then back on, to reset the error message.
NOTE: The Hi2 setting should not be used with the RCA outputs
of aftermarket head units!
Counterclockwise
(CCW) Button
Move selectable option
counterclockwise
(CCW) one value.
Move selectable
option clockwise
(CW) one value.
Rotary Encoder
Rotates clockwise (CW) and counterclockwise (CCW). Each
detent represents a value increase (CW) or decrease (CCW).
Mode Access Control
Pressing both the left and right buttons
simultaneously for specied time periods
accesses various modes of the amplier.

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To Set the Input Level:
1. Move the switch for the Input Signal Selector to the Hi position (or Hi2, if you are connecting to a factory
system with open-circuit protection).
2. Set the bass, treble, balance and fader controls on your head unit to the center (or at) positions. Set
loudness to off. Defeat any sound-enhancement (such as DSP, surround sound or EQ) settings.
3. Insert the setup CD into your head unit and verify that the CD is playing.
4. Enter Setup mode by pressing CW and CCW buttons simultaneously for more than three seconds until
the Input Level adjustment icon lights. The amplier’s output will be muted (the output-level indi-
cator will show “ ” in the display).
5. Turn the head unit’s volume control all the way up (to maximum output).
6. Using a small screwdriver on the level-adjustment dial next to the Input Signal Selector switch,
adjust the Input-Level Control up or down, while watching the icons on the amplier’s display panel.
If the green “up” arrow icon is lit, turn the control clockwise until the icon is lit.
If the red “down” arrow icon is lit, turn the control counterclockwise until the icon
is lit.
NOTE: If turning the control fully clockwise doesn’t cause the icon to light, move the switch for
the Input Signal Selector to the Lo position and try again.
Once the icon is lit, stop adjusting and repeat the procedure to set the input level on the other channels.
When both check marks are lit, the input levels for each channel pair are set properly.
To Enable or Disable Signal-Sensing Turn-On:
7. While in Setup mode, enable/disable signal-sensing turn-on
by turning the rotary controller clockwise or counterclockwise
to select SEn On or SEn OFF in the display. If you have
connected a remote turn-on lead, set to SEn OFF.
8. Turn the volume control on your head unit down and remove the
setup CD. If you miss or circumvent this step, the audio system
will reproduce a loud test signal that could damage speakers when exiting the Setup mode.
9. Press and release the CW and CCW buttons simultaneously to exit Setup mode.
10. Do not adjust the Input-Level Controls further. Use the Output Gain Control to balance the channel levels
and to “tune” the system.
SETTING THE FILTERS (CROSSOVERS)
There are 98 selectable frequencies for the low-pass and high-pass
lter settings. The selectable frequencies are detailed in the table to the
right.
Getting to the Crossover Settings
Press both CCW and CW buttons at the same time for less than three
seconds and release, to activate the controls. Use the CCW and CW
buttons to navigate to the preferred crossover-adjustment parameter.
How to Set a High-Pass Filter
Navigate to the high-pass lter frequency parameter and, using the
rotary encoder, select the desired cutoff frequency. Then navigate to
the high-pass lter slope parameter and, using the rotary encoder,
select the desired lter slope.
High-Pass Example
Use the CW and CCW buttons to navigate to the Low-Pass frequency
parameter and set to OFF.
How to Set a Low-Pass Filter
Navigate to the Low-Pass Filter frequency parameter and, using the rotary encoder, select the desired
cutoff frequency. Then navigate to the Low-Pass Filter slope parameter and, using the rotary encoder,
select the desired lter slope.
Low-Pass Example
Use the CW and CCW buttons to navigate to the High-Pass frequency parameter and set to OFF.
Mode Function
SEn On Signal Sensing is ON
SEn OFF Signal Sensing is OFF
Available Crossover Frequency Settings
20.0Hz 95.0Hz 260Hz 1.40kHz 4.80kHz
22.5Hz 100Hz 270Hz 1.50kHz 5.00kHz
25.0Hz 105Hz 280Hz 1.60kHz 5.50kHz
27.5Hz 110Hz 290Hz 1.70kHz 6.00kHz
30.0Hz 115Hz 300Hz 1.80kHz 6.50kHz
32.5Hz 120Hz 350Hz 1.90kHz 7.00kHz
35.0Hz 125Hz 400Hz 2.00kHz 7.50kHz
37.5Hz 130Hz 450Hz 2.20kHz 8.00kHz
40.0Hz 140Hz 500Hz 2.40kHz 8.50kHz
42.5Hz 150Hz 550Hz 2.60kHz 9.00kHz
45.0Hz 160Hz 600Hz 2.80kHz 9.50kHz
50.0Hz 170Hz 650Hz 3.00kHz 10.0kHz
55.0Hz 180Hz 700Hz 3.20kHz 12.0kHz
60.0Hz 190Hz 750Hz 3.40kHz 14.0kHz
65.0Hz 200Hz 800Hz 3.60kHz 16.0kHz
70.0Hz 210Hz 900 Hz 3.80kHz 18.0kHz
75.0Hz 220Hz 1.0kHz 4.00kHz 20.0kHz
80.0Hz 230Hz 1.10kHz 4.20kHz OFF
85.0Hz 240Hz 1.20kHz 4.40kHz
90.0Hz 250Hz 1.30kHz 4.60kHz

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English
How to Set a Band-Pass Filter Band-Pass Example
To build a proper band-pass lter, the low-pass
frequency must be greater than the high-pass
frequency. The MS-A1004 will not allow you to set
the low-pass lter frequency to a lower value than
the high-pass lter frequency. To enable a band-pass lter, rst select the High-Pass Filter frequency and slope, as
indicated above. Next, select the low-pass lter frequency and slope. Once the settings are complete, the controls
will time out after 15 seconds.
OUTPUT LEVELS
Setting the Output Level
Use the Output Gain Control to adjust the balance between the subwoofer and the full-range speakers,
between the front and rear speakers, or between the midrange, mid-bass or tweeters in a bi-amped or
tri-amped (all active) system. The output level is adjustable in 0.5dB increments, with a display of 80 indi-
cating maximum output. The lowest setting will mute the output and “ ” will show in the display.
To set the output level, press the CW or CCW buttons to highlight the output-level parameter for adjustment, and
turn the rotary controller to adjust the output level.
WIRELESS BASS CONTROL
Overview MS-WBC
The MS-WBC (sold separately) is battery-powered and also
includes a +12V plug that can be connected to a +12V source in the
vehicle. The MS-WBC transmits a signal only when the control is
rotated. The amplier(s) must be on to receive and respond to the
control, so adjustments made to the control when the amplier(s)
is/are off aren’t recognized.
How to Pair the MS-WBC Wireless Bass Control with the MS-A1004
The optional MS-WBC wireless bass controller must be paired to the amplier in order to be used. When the ampli-
er is rst turned on, the amplier is not paired with any controller.
Press and hold both CCW and CW buttons simultaneously for more than three sec-
onds and the amplier will enter Setup mode. Continue pressing the buttons for four
more seconds until the pairing indicator is illuminated. Release the CCW and CW
buttons.
Pairing must occur within 15 seconds. The time remaining is indicated at the far right
of the display. Turn the knob on the bass controller during this 15-second period. The
wireless bass controller will be recognized by the amplier and will automatically pair
the two together.
After a successful pairing, the upper HP lter digits will display the bass controller
version number for three seconds. Then the amplier will return to the normal (RUN)
mode.
If a valid pairing has not occurred, the amplier will remain unpaired. After the 15-sec-
ond countdown, the amplier returns to the Setup mode.
If your system includes several MS Series ampliers, pair them one at a time. Once all
the ampliers are paired and have returned to the normal (RUN) mode, turn the knob to
synchronize all ampliers.

12
Example of lter and input settings for
this conguration
Inputs on all four channels
SYSTEM DIAGRAMS
Inputs on channels 1 and 3

13
www.jbl.com
English
SYSTEM DIAGRAMS
Example of lter and input settings for
this conguration
Inputs on channels 1 and 2
Example of lter and input settings for
this conguration
Inputs on channels 1, 2 and 3

14
English
SPECIFICATIONS
Specication
Power output
CEA® 2006
Bridged mode
Signal-to-noise ratio
Frequency response
Maximum input sensitivity
Maximum input voltage
Dimensions (L x W x H)
Weight
Beauty carton dimensions
Gross weight (with beauty carton)
100W RMS x 4 channels @ 4 ohms
100 W RMS x 4 channels @ 2 ohms
200 W RMS x 2 channels @ 2 ohms
80dB referenced to 1 watt
90dB referenced to rated power
10Hz – 27kHz (–3dB)
100mV
20V
7-3/16" x 8-1/4" x 2-3/4"
183mm x 210mm x 70mm
5.57lb
2.53kg
13-15/16" x 11-9/16" x 10-5/16"
354mm x 294mm x 264mm
14.61lb
6.63kg
© 2010 Harman International Industries, Incorporated. All rights reserved. JBL is a trademark of Harman
International Industries, Incorporated, registered in the United States and/or other countries. CEA is a
registered trademark of the Consumer Electronics Association. Features, specications and appearance are
subject to change without notice.
Harman Consumer, Inc.
8500 Balboa Boulevard
Northridge, CA 91329 USA www.jbl.com