Owner’s Manual
for 240SE, 400SE, & 600SE
Two Channel Power Amplifiers
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FEATURES
Welcome
MULTI-FUNCTION CIRCUIT DESIGN
These 2-channel amplifiers have built-in high-pass/low-pass filters. With the filter switched off,
they can be configured as a quasi 3-channel amplifier.
… to the Coustic world of power and clarity. The new 240/400/600SE amplifiers deliver the clean-
est music you’ve ever heard at any power level in the 12-volt environment. Besides their sleek
contoured design, the 240/400/600SE amplifiers have all the latest and most sophisticated audio
features. This manual offers you a guided tour of all these exciting features. For the best sonic
reproduction, please follow the installation suggestions and recommendations as closely as pos-
sible. The time you spend will prove to be worthwhile when you sit back and enjoy the high fideli-
ty music!
To further explore the potential of your Coustic amplifier, we recommend you match it with our
full-feature high performance AM/FM CD/cassette source units, dynamic full-range speakers or
subwoofers, state-of-the-art equalizers and electronic crossovers.
BUILT-IN ELECTRONIC CROSSOVER WITH CONTINUOUSLY ADJUSTABLE CROSSOVER
FREQUENCIES
You have a choice of selecting full-range, high-pass only or low-pass only. These filters feature
18 dB per octave high-pass and low-pass. Furthermore, the crossover frequencies are
continuously variable for fine-tuning of your audio system.
OVER-CURRENT, SHORT CIRCUIT AND DC OFFSET PROTECTION
The sophisticated circuitry monitors abnormal conditions such as voltage spikes, oscillation, DC
offset or short circuit. When any of these undesirable conditions exceed their respective preset
limits, the circuit will shut down the audio system briefly and lights up the protection indicator to
identify the problem for immediate attention. Once the problem is resolved, the amplifier will
resume operation automatically.
Whatever you need for your ultimate car audio system, look to Coustic - we have the fullest
range of car audio components to meet the most critical demands.
That’s because …….COUSTIC ROCKS!
HIGH SPEED HIGH CURRENT MOSFET SWITCHING POWER SUPPLY
High current MOSFET transistors are used in the power supply section to minimize internal heat
and maximize reliability. Furthermore, the combination of the very high pulse-width-modulated
(PWM) switching frequency and the extra large filter capacitance guarantees stronger and
deeper transient bass response.
TRIPLE DARLINGTON HIGH CURRENT/HIGH VOLTAGE FULLY COMPLEMENTARY OUTPUT
STAGE
Complementary output stage audio circuitry has long been a hallmark of "exotic" home amplifier
design. Coustic is one of the very few car audio manufacturers to incorporate such elaborate
audio circuitry into its power amplifiers. Triple Darlington configuration ensures the audio
amplifier is always operating at its optimum conditions.
No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any
form or by any means, electronically, mechanically, or otherwise, without the prior written permis-
sion of Coustic or Mitek Corporation.
Please take a moment to complete and mail in the Owners’ Registration Card. (The serial num-
ber of your amplifier is marked on the bottom of its metal chassis.) Please also record the serial
number of your amplifier in the space provided below and keep this manual for future reference.
LINE OUPTUTS
The full-range line outputs can be used to feed signals to another amplifier for your future
expansion or for setting up a more sophisticated system.
WIDE RANGE INPUT SENSITIVITY ADJUSTMENT
The input sensitivity level of the Coustic 240/400/600SE Series amplifiers can be easily varied
from as low as 100 mV to as high as 5.0 volts by adjusting the control on the End Panel.
Serial Number: ________________________________________________________________
Date of Purchase: ______________________________________________________________
HIGH/LOW IMPEDANCE INPUT
If you are using a floating or common ground car radio, these amplifiers are the best fit for your
system. They are compatible with floating or common ground car radio speaker outputs even
without a floating ground adapter. If, in the future, you decide to change to a higher quality after
market source unit with RCA pre-amp outputs (like the Coustic CD527), this same amplifier is
there to give you improved frequency response and better sonic performance.
STABLE INTO 2-OHM LOADS
With the over-designed power supply section and a sophisticated power management circuitry,
these amplifiers can maintain their stability even in the highly reactive low impedance environment.
ADJUSTABLE BASS BOOST
This feature allows you to enhance the bass performance of your sound system. The control is
continuously variable with a maximum boost level of 18 dB.
BUILT-IN REMOTE SUBWOOFER LEVEL CONTROL PORT
This amplifier has a built-in remote subwoofer level control input port. With the optional RS
remote control, the subwoofer output level can be adjusted to compensate for bass fluctuations
in a moving vehicle.
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REAR PANEL
CONTROLS, INDICATORS, AND TERMINALS
11 12 10
9 13
14
FRONT PANEL
PWR / PRT
FUSE
+
L
-
+
R
-
GRD REM
B+
SPKR LEVEL
INPUT
OUTPUT
SENS
MODE
FREQ
BOOST
REMOTE
60
180
BRIDGE
R
L
30
300
MIN
MAX HPF OFF LPF
0
+18
Figure 2: Rear Panel Terminals and Indicators
9. POWER AND PROTECT INDICATOR (PWR/PRT)
Green light indicates that the amplifier is "ON".
Figure 1: Front Panel Terminals and Controls
1. FILTER MODE SELECT SWITCH (MODE)
Red light indicates either a high current, short circuit or DC offset is detected at the speaker
outputs. The amplifier will revert to normal operation once the problem is rectified.
This indicator also lights up at a high operating temperature. Under this condition, the
amplifier will automatically shut down. As soon as the temperature falls to a safe level, the
amplifier will automatically resume operation.
"HPF":
"OFF":
"LPF":
Slide switch to this position if the amplifier is used as a mid/tweeter amplifier.
Slide switch to this position if the amplifier is used as a full-range amplifier.
Slide switch to this position if the amplifier is used as a subwoofer amplifier.
10. POWER INPUT TERMINAL (B+)
2. HIGH-PASS / LOW-PASS FREQUENCY SELECTOR KNOB (FREQ)
Adjust high/low-pass crossover frequency between 30 to 300Hz.
To be connected to the positive terminal of the vehicle’s battery or other constant +12 V
source.
3. BASS BOOST CONTROL (BOOST)
11. GROUND INPUT TERMINAL (GND)
Select a boost level between 0 dB and +18 dB to enhance the bass performance of your
sound system.
To be wired to the vehicle’s chassis for ground.
12. REMOTE TURN-ON INPUT TERMINAL (REM)
To be connected to the remote control wire or power antenna lead of the source unit for
remote ON/OFF.
4. INPUT SENSITIVITY LEVEL CONTROL (SENS)
The input sensitivity level can be varied from 5.0 volts to 100 mV depending on the output
voltage of the source unit (refer to sub-section titled INPUT SENSITIVITY ADJUSTMENT).
13. FUSE RECEPTACLE
5. HIGH IMPEDANCE INPUT (RCA)
To be connected to RCA pre-amp outputs from a source unit (i.e., radio, tape deck or CD play-
er).
14. LEFT/RIGHT SPEAKER OUTPUT TERMINAL
For connection to the speaker system.
6. LOW IMPEDANCE INPUT (SPKR LEVEL)
To be connected to speaker outputs from a source unit (i.e. radio, tape deck or CD player)
when RCA outputs are not available.
7. LINE LEVEL OUTPUT
This output can be used to connect to another amplifier for system expansion.
Note: This line level output is full range.
8. REMOTE SUBWOOFER LEVEL INPUT
To be connected to the optional RS remote subwoofer volume control.
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SPEAKER IMPEDANCE
SYSTEM CONFIGURATION
Although extremely low impedance speaker loads will not damage the amplifier, for stereo mode,
we recommend speaker loads of 2, 4 or 8 ohms; for bridged mono mode, 4 or 8 ohms. (Note: In
bridged mono mode, the amplifier sees only half of the speaker impedance.)
NOTE remember that we are not defying the laws of Physics! IF you decide to connect ANY
Coustic amplifier into a bridged mono load BELOW 4 ohms, Physics dictates that current draw
doubles! This is not too big a problem with the 240SE or 400SE. But with the 600SE this is
DANGEROUS. The current draw could be as great as 200 amps (peak). Make sure you wire
your system properly.
By purchasing the 240/400/600SE power amplifiers, you are already one step closer to experi-
encing the purest and most natural sound quality in the automobile environment. To take full
advantage of the potential of this amplifier, before installation, we strongly recommend that you
acquaint yourself with all its available features and then spend some time in designing a system
most suitable for you. Consider the components you have now and those that you plan on
adding or upgrading in the future.
With the 600SE we recommend ONLY a 4 gauge wire OR larger!
BUILT-IN ELECTRONIC CROSSOVERS
An electronic crossover has many advantages over passive crossovers - lower cost, simplified
yet more flexible system design, lower distortion and higher gain structure. The 240/400/600SE
power amplifiers are equipped with built-in 18 dB per octave continuously adjustable electronic
crossovers that can be configured for full-range, high-pass or low-pass applications. The line out-
put is designed to provide additional expansion capability to your sound system.
POWER CABLES
Power cables are as important as battery capacity. Use only high quality power cables of gauge
size AWG 8 (AWG 4 for the 600SE) or bigger for installation.
YOU CAN NEVER HAVE TOO BIG OF A POWER/GROUND WIRE!
CIRCUIT BREAKER/FUSES
BI-AMPLIFICATION
It is also advisable to install a circuit breaker/fuse close to the battery. This would effectively
lower the risk of the power cable catching fire should a short circuit occur in the audio system. A
circuit breaker or fuse 50% with of the main batteries amp hour rating is recommended. Going
larger in circuit breaker or fuse value means that you have NO protection. DO NOT over fuse!
Fuses on the amplifier DO NOT protect the amplifier, they protect the car.
A bi-amplified system normally consists of an active crossover and two amplifiers. The active
crossover divides the audio frequency spectrum into two ranges: frequencies below the
crossover point are directed to the amplifier driving the subwoofer(s), while all frequencies above
the crossover point are directed to the amplifier driving the mid-range/tweeters.
Because of the versatility of the Coustic amplifiers, you are quite free to build whatever mobile
audio system you want or to plan a long term expansion scheme for your car’s audio system.
For example, with the low impedance input, you can use the amplifier as a full-range amplifier to
upgrade your existing factory sound system to drive the front full-range speakers. Or you can
make a "parallel" connection on the amplifier to run both the front and rear speakers.
The full-range line output can be used to drive an additional amplifier driving the rear full-range
speakers
SPECIAL PRECAUTIONS & ACCESSORIES
Quality equipment and proper system design and installation are the ingredients for the ultimate
car audio system. With your wise decision to purchase this Coustic amplifier, you are already
one big step closer to realizing your dream. The next step is simple - have an experienced pro-
fessional Coustic dealer install your audio system. However, if you prefer to install the system
yourself, we have the following commendations for your reference:
You can also configure the amplifier as a mid/tweeter amplifier.
If you need more power, you can bridge the amplifier as a mono subwoofer amplifier.
Caution: Improper installation will void the product warranty and Coustic is not responsible for
any consequential damage to the amplifier and/or other audio components and/or electrical com-
ponents of the vehicle.
3 CHANNEL CONFIGURATION
The Multi-Function Circuit enables the amplifier to be configured as a 1-channel, bridged, mono
amplifier driving a single speaker, 2-channel, stereo amplifier driving a pair of speakers, or quasi
3-channel amplifier.
TERMINALS, LUGS AND CONNECTORS
High current terminals, lugs and/or connectors are also required to ensure a safe and sure elec-
trical connection and conduction.
The bridged mono mode is commonly used for subwoofer amplification. The amplifier provides
more power in the bridged mono mode than it does in stereo mode.
With the assistance of passive crossovers and in its quasi 3-channel mode, the amplifier can be
configured as a 2-way amplifier driving a pair of left- and right-channel, full-range mid-tweeters
and a mono woofer. Care must be taken to choose capacitors and inductors of correct value; oth-
erwise damage could be done to the speakers and/or the amplifier.
For approximate passive crossover components’ value, please refer to Coustic’s website,
NEGATIVE GROUNDING SYSTEM
The 240/400/600SE power amplifiers are designed for use with a 12-Volt negative ground sys-
tem. Installing this amplifier in a vehicle with a POSITIVE ground system will result in severe
damage to the amplifier, other audio components and/or the vehicle’s electrical components. If
your vehicle happens to run on a positive ground system, please consult your Coustic dealer.
MULTI-FUNCTION PROTECTION INDICATOR
WARNING: These power amplifiers are very powerful. We strongly recommend
When the red protect indicator light up it signifies a high operating temperature is detected and
the amplifier is temporarily shut down to allow for a cooling period. As soon as the temperature
returns to a safe level, the amplifier will restart and resume normal operation.
This indicator also lights up when the amplifier detects either an over-current situation, shorted
speaker outputs or a DC offset at the outputs. Turn off the amplifier, double-check all inputs and
speaker connections to make sure there is no short or inappropriate inputs. If all connections are
in order, turn on the amplifier to resume operation.
installation in the following manner:
(1)
(2)
by professional mobile audio installers; and
incorporating all of the above special precautions and accessories.
Failure to comply with either one or both of the above conditions will render the warranty void
and Coustic is not responsible for any consequential damage to the amplifier, other audio compo-
nents and/or electrical components of the vehicle.
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WIRING LAYOUT
INSTALLATION
Once the location of all the components has been determined, plan the best routes for all the
necessary wiring, making sure that the wires are easily accessible without dismounting the vari-
ous components.
Caution: Please follow all the installation recommendation and instructions in this manual.
Installing and/or using the amplifier in methods other than those outlined herein may reduce the
performance capability of the amplifier. Any such installation or usage renders the product war-
ranty void.
MOUNTING
1. Place the amplifier at the desired location and use it as a template to determine the exact
position of the mounting holes.
2. Mark the mounting holes with a felt pen.
LOCATION
Ventilation: The primary deciding factor of amplifier location is heat dissipation. Despite its highly
efficient heat dissipation design, the amplifier can be crippled by inadequate ventilation.
Prolonged operation at high volumes, combined with inadequate ventilation, may cause the
amplifier to overheat and trigger the automatic shut down circuit until the temperature returns to a
safe level. To ensure adequate ventilation, the ideal location for the amplifier is a spot away from
any heat source, with at least 2 inches of clearance above and around the unit.
3. Put the amplifier aside.
4. If the mounting surface is carpeted, cut out small circles of the carpet and padding around
the four mounting holes to expose the metal underneath.
5. Use a center punch to ensure drilling the exact position for the screws. DO NOT BEGIN
DRILLING UNTIL YOU HAVE PUT THE AMPLIFIER ASIDE. USING THE AMPLIFIER AS A
DRILLING GUIDE MAY CAUSE IRREPARABLE DAMAGE TO THE AMPLIFIER.
6. Mount the amplifier with the screws provided.
WIRING
Routing audio cables and power cables together would invariably cause radiated engine noise in
your audio system. If possible, run audio cables on one side of your car and power cables on the
other. Never route these wires underneath the vehicle body.
Note: The battery ground should remain DISCONNECTED at all stages of installation.
CONNECTION
Connect the RCA input jacks of the Amplifier to the output of the Source Unit (e.g. radio, cassette
player or CD player). If line level output is not available, connect the speaker outputs of the
source unit to the Loz input of the amplifier.
Figure 3: Upright Mount on Horizontal Surface
Figure 4: Parallel Mount on Vertical Surface
The amplifier may be mounted upright on a horizontal surface (see Figure 3) or parallel to a verti-
cal surface (see Figure 4). However, the amplifier should never be mounted upside down (see
Figure 5) for the simple reason that the hot air generated by the amplifier would have to go
through the unit internally on its natural upward path (i.e. "feedback" into the unit) and would result
in increased internal temperature. This would speed up the thermal shut down of the amplifier.
LEFT (wht/blk) -
LEFT(white) +
SPKR LEVEL
SENS
R
L
MIN
MA
RIGHT(gry/blk) -
RIGHT(gray) +
Figure 5: Inverted Mount (Not Recommended)
Vibration: Constant vibration could eventually cause the amplifier to come off its mount, resulting
in stress on wire connections, which, in turn, results in "open" or "short" circuit. For this reason, a
location with minimum vibration and a flat surface for secure and firm mounting should be chosen
for the amplifier.
Figure 6: High/Low Impedance Inputs
Note: Connect the black ground wire to the source unit ground only if alternator noise is present.
Moisture: The amplifier should also not be exposed to moisture and water.
Taking all the above into consideration, the best mounting position for the amplifier would be the
floor of the trunk or behind the rear seat back.
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Connect the Amplifier to the Speakers. Use thicker speaker wires (e.g. 8 - 10 gauge desirable)
for these connections.
Connect the Amplifier to the Battery
Heavy gauge wire is preferred. Add a fuse or circuit breaker to any power wire that runs through
firewall or sheet metal to protect the battery, the vehicle, and more importantly, you. It is highly
recommended that installation is carried out by an authorized Coustic dealer.
For Stereo Mode
1. Connect the left negative ("–") speaker output of the amplifier to the negative terminal of the
left speaker.
Connect the Amplifier Remote Control
2. Connect the left positive ("+") speaker output of the amplifier to the positive terminal of the
Connect the remote input terminal of the amplifier to the remote output terminal of the source unit
to establish amplifier remote on/off through the power on/off of the source unit. If the source unit
does not provide a remote output, connect to its power antenna lead or other switched 12-volt
source, e.g. ignition switch.
left speaker.
3. Connect the right negative speaker output of the amplifier to the negative terminal of the
right speaker.
4. Connect the right positive speaker output of the amplifier to the positive terminal of the right
speaker.
Connect the Amplifier Ground to Vehicle Chassis
Find a good ground spot in the vehicle and connect the ground terminal of the amplifier to this
point via a large gauge ground cable.
Reconnect the Battery Ground to the Vehicle Chassis
Double check all the previous installation steps, in particular, the wiring and component connec-
tion. If everything is in order, complete the installation by reconnecting the battery ground to the
vehicle chassis.
+
L
-
+
R
-
Optional RS Remote Subwoofer Level Control
If the optional remote subwoofer level control (model RS) is used, connect the plug of the RS to
the port on the end panel of the amplifier.
BRIDGE
Figure 7: Stereo Connection
For Bridged (Mono) Mode
1. Connect the left positive ("+") speaker output of the amplifier to the positive input terminal of
the speaker.
T
SENS
MODE
FREQ
BOOST
REMOTE
60
180
2. Connect the right negative ("–") speaker output of the amplifier to the negative input terminal
of the speaker.
30
300
MIN
MAX
HPF OFF LPF
0
+18
3. Make sure that BOTH RCAs (left/right) are plugged in, otherwise bass response and output
will suffer.
+
L
-
+
R
-
Figure 9: Remote Subwoofer Level Control.
BRIDGE
Figure 8: Bridged Single Woofer Connection
CAUTION: ANY DEVIATION FROM THE ABOVE SPEAKER CONNECTION MAY CAUSE
SERIOUS DAMAGE TO THE AMPLIFIER AND/OR SPEAKERS. PLEASE DOUBLE CHECK
THE CONNECTION BEFORE TURNING THE SYSTEM ON.
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CROSSOVER SELECTION
FINAL SYSTEM CHECK
The amplifier has built-in high-pass/low-pass filters that can be defeated by sliding the switch to
the OFF position.
INPUT SENSITIVITY ADJUSTMENT
The Input Sensitivity Control is located on the Front Panel. The objective of input sensitivity
adjustment is to match the output of the source unit with the input of the amplifier. The output
voltage of individual source units can vary. For example, some radios have an output of 200 mV
and others have 5 Volts or more. To cater to these variations, the SE amplifier has an adjustable
input sensitivity level that ranges from 100 mV to 5 volts.
1. When the high-pass is selected, the amplifier will be devoted to mid/tweeters.
2. When the low-pass is selected, the amplifier will be used to drive woofers/subwoofers.
With this setting, the optional RS can directly control the amplifier playback level.
3. When the filter is switched off, the amplifier is used as a full range amplifier.
Adjusting this control requires some experimenting. Basically, you want all the gain at the begin-
ning of the system, NOT at the end (amplifier). Turn your headunit UP and keep your amplifier
gains at the minimum possible setting (counter-clockwise). This will give you the best sound and
lowest signal to noise ratio.
CROSSOVER FREQUENCY SELECTION
Both the high-pass and the low-pass section offer continuously adjustable crossover frequencies
between 30 and 300 Hz. Adjust the setting according to your speaker component specification or
to your particular preference.
Besides better sonic reproduction, proper input sensitivity also helps to prolong the reliability
span of your amplifier by eliminating excessive internal temperature generated by incompatible
source unit output and amplifier input.
100Hz Low-pass selecte
Note : Turning the input gain UP does NOT indicate MORE power. Just MORE noise. The input
gain control IS NOT a power control. REMEMBER that the input gain control has nothing to do
with the power output of the amplifier.
BOOST
MODE
FREQ
60
180
30
300
HPF OFF LPF
0
SENS
NPUT
MODE
Figure 11: Crossover Frequency Adjustment
BASS BOOST CONTROL (BOOST)
Select a boost level between 0 dB and +18 dB to enhance the bass performance for your sound
system. BASS BOOST is NOT free! Every 3dB of boost costs you twice as much in power.
Make sure to set the final gains ……after setting the Bass Boost to work best with your sub-
woofer/enclosure combination. More is NOT always better!
180
MIN
MAX HPF OFF LPF
30
5 volts
.1 volt
SETTING UP USING RS (Remote subwoofer control)
Figure 10: Input Sensitivity Control
If you are using the RS control, make sure to take this into account during set-up procedures of
the subwoofer amplifier. You should set the system up with the RS plugged in, and with the level
knob turned all the way down (counter-clockwise).
1. Turn the Input Sensitivity Control all the way down (counter clockwise).
2. Set the volume control of the source unit to approximately 2/3 of its maximum output.
3. Turn the balance control of the source unit to its center position.
4. Leave the tone (bass/treble) controls at their usual position.
NOTE: the RS ONLY works when you’ve selected the
LPF (low-pass) crossover configuration.
5. Play a CD or tape track with great dynamic range.
6. Use the Bass Boost Control to enhance the bass performance (if desired).
7. To locate the optimum input sensitivity setting, ask the person assisting you to turn the Input
Sensitivity Control clockwise until audio distortion starts to develop. Turn the sensitivity
control backwards slightly to minimize the distortion.
8. If you constantly switch between CD/tape and radio, you will need further adjustment since
radio output level differs from that of CD or tape. In this case, you need to locate a
balanced sensitivity setting which is best for both the output level of radio and that of CD or
tape.
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RCA outputs
HiZ
(front and rear)
A
B
OPTION 1 -RCA Outputs
CD-328
P
W
R
E
JE
C
T
II
MUTE
+
MODE
LOUD
L
U
D
P
.CL
Battery
RCA outputs
HiZ
(front and rear)
S
E
L
BAND
IS
ASM
MONO
WB
S
H
U
F
R
P
T
S
C
A
N
E
A
S
P.ME
5
P.PLA
6
D
C
REL
–
T
U
NE
1
2
3
4
DISP
A
B
OPTION 1 -RCA Outputs
B
CD527 CD/RECEIVER
and CD CHANGER CONTROL
CD-328
P
W
R
E
JE
C
T
II
MUTE
+
MODE
LOUD
L
O
U
D
P
.CL
Battery
S
E
L
BAND
IS
ASM
MONO
WB
OPTION 2 -Speaker lead Outputs
S
H
U
F
R
P
T
S
C
A
N
E
A
S
P.M
E
P.P
LA
D
C
REL
–
T
U
NE
1
2
3
4
5
6
DISP
(Note: You cannot use both RCA and
speaker lead inputs simultaneously!!)
B
®
RX-779
CD Changer Control
CD527 CD/RECEIVER
and CD CHANGER CONTROL
M
P
–
A
.S
.
+
A
uto Aligned
DOY
B
A
zimuth System
P. C
L
R
T
ES
E
P
P
R
O
T
R
AC
K
P. ME
M
D
IS
D
G
C
S
E
E
K
A
L
D
T
U
N
E
M
S
H
U
F
F
D
.S
C
A
N
DIS
C
D
.R
P
T
70µs
T
P
S
70µ
S
T
P
LO
S
OPTION 2 -Speaker lead Outputs
(Note: You cannot use both RCA and
speaker lead inputs simultaneously!!)
SH
UF
F
T.
S
C
A
N
D
.
RP
T
P.
P
LA
Y
U
D
FRONT/REAR
speaker lead
outputs
®
RX-779
CD Changer Control
MO
DE
P
O
W
E
R
Anybody’s leased car: high power in-dash
A
.S
.
A
uto Aligned
–
+
DOLBY
B
A
zimuth ystem
S
P. C
L
R
ES
E
B
A
D
P
T
P
R
O
T
R
AC
K
P. ME
M
D
IS
D
G
C
S
E
E
K
L
D
T
U
N
E
S
H
U
F
F
D
.S
C
A
N
DIS
C
D
.R
P
T
70µs
T
P
S
µ
S
T
P
LO
S
SH
UF
F
T.
S
C
A
N
D
.
RP
T
P.
P
LA
Y
U
D
FRONT/REAR
speaker lead
outputs
–
+
Anybody’s leased car high power In dash
160SE
FRONT speaker
lead Inputs
POWER AMPLIFIER
LoZ
(crossover set at 100Hz hipass)
–
+
HS-652a
6 1/2 inch Co-Axial
HS-652a
6 1/2 inch Co-Axial
–
+
option 1
FRONT/REAR
RCA lead
Inputs
–
+
A
B
FRONT speaker
lead Inputs
LoZ
400SE
POWER
400SE
POWER AMPLIFIER
(crossover set at 80Hz lo-pass)
–
+
–
+
lineout from hi-pass
amplifer to
option 1
10RS
10" SUBWOOFERS
subwoofer amplifier
FRONT/REAR
10RS
RCA lead
Inputs
10" SUBWOOFERS
–
+
A
B
A
B
Figure 12: Two (2) amplifier system
Figure 13: 3-Channel system with one stereo amplifier
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TROUBLE-SHOOTING SECTION
SYMPTOM
PROBABLE CAUSE
SYMPTOM
No power
PROBABLE CAUSE
8. Whining noise when
engine is running with noise
varying with the accelerator
(noise level varies with
source unit volume control).
Reroute power cable from the battery to the source unit
directly, bypassing the battery terminal in the fuse box.
Check power connections to be sure they are clean.
Check ground connections to be sure the ground wire is in
direct contact with the bare metal surface of chassis (with that
spot scraped clean of any paint).
1
Check connections to the amplifier's Ground, B+ & Remote
terminals. Check connection at "+" terminal of the battery.
Check the remote turn-on terminal. Ensure it receives power
when the source is turned on (or when the switch is turned
on). Refer to the Installation Section. Check the power line
fuse: if a fuse is blown, replace it; if fuse continues to blow,
check the power wire and also the amplifier for short. If the
short is in the power wire, fix it; if the short is in the amplifier
itself, see your Coustic dealer.
Check the voltage at the amplifier, and the remote ON/OFF
lead. The voltage should measure between 11 V-15V. If the
measurement is beyond this range, have the source unit
checked out by an authorized dealer.
9. Constant level whining noise Check for a ground loop in the system. Turn the system off
(most noise with source unit
volume at minimum)
and one by one change the ground connections
(by changing to a different contact point, scraping the level
constant irrespective of metal clean of any paint, rust or
grease). Turn the system on and check for whining noise after
each ground change.
CAUTION:
Do not disconnect the Power Amplifier's ground when
the system is on. This could damage the amplifier.
2. Power without sound with
red power/protection
indicator on
Turn the amplifier off, and Check all input & output signal
cables and connections. Check the speakers for a short with
a VOM or by connecting them to another audio system. After
making sure everything is normal, turn the amplifier on again.
Check for defective signal cables. Disconnect signal cables
at the amplifier and listen carefully for noise. If the noise dis-
appears, run a test pair of signal cables. If there is no unde-
sirable whining noise, reconnect to the amplifier with the new
pair of signal cables. Check the battery ground connection to
the vehicle chassis to make sure it is tight and clean.
Check the battery negative terminal connection to make sure
it is tight and clean.
3. Power without sound with
red power indicator on
The continuous red light of the power indicator signals high
internal operating temperature which results in the amplifier
switching off temporarily; when the amplifier cools down to a
safe level, the amp will automatically restart.
4. No sound from one side
Check balance control.
Check speaker connections.
Check signal input connection.
10. Radiated noise: crackling
noise on FM which is not
present when playing tape
or CD (noise varying slightly
with accelerator, but is
Check if the noise is actually radiated noise: Tune a portable
radio to the same FM station. Move the portable radio close
to the vehicle engine. If crackling noise comes from the
portable radio, then the noise you have in your vehicle audio
system is radiated noise.
5. Very low sound from
both radio & tape
Check your radio's fader control.
Check the amplifier's Input Sensitivity Level.
present at all times)
Check with a VOM to make sure the antenna is really ground-
ed to the vehicle chassis.
6. Frequent automatic amplifier This indicates that the amplifier is operating at a continually
shut down
undesirable high internal temperature.
To ensure a true ground, break the plastic covering of the
antenna lead and solder a piece of heavy wire (minimum 14-
gauge) to the braided shield.
High operating temperature can be caused by inadequate
ventilation. (Refer to the sub-section titled LOCATION for a
better amplifier location.)
Ground the other end of the wire at the same point as the
radio ground.
Check spark plug wires. They should be suppression-type
wire and less than 2 years old. Otherwise, replace them with
good quality suppression cables.
High operating temperature can be caused by an excessively
low impedance load, say below 2 ohms. Check for bad
speakers and/or electronic crossover, proper passive
crossover components; if all else fails, try rewiring the entire
system.
Make sure the engine block is grounded to the vehicle chas-
sis at a bare metal spot (scraped clean of paint, rust and
grease).
A high operating temperature may be caused by an incorrect
input sensitivity level (refer to sub-section titled INPUT
SENSITIVITY ADJUSTMENTS for correct setting).
Make sure hood is also grounded. If not, use a ground strap
(which is available from any auto parts store) to ground the
hood to the vehicle chassis.
7. "Motorboating": The amplifier Check the amplifier's connection to the battery.
power indicator going off
repeatedly when the audio
system is on.
Check battery voltage. If low, recharge or replace battery.
Check all ground connections.
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Limited Warranty
Important Notice to Consumer:
Coustic offers the following warranty to the ORIGINAL PURCHASER of COUSTIC
products within the period stated herein:
SPECIFICATIONS:
240SE
400SE
600SE
Rated Power @ 14.4 V (0.1 % THD):
4 Ohm Stereo
2 x 60 Watts
2 x 100 Watts
2 x 150 Watts
Coustic warrants all new products against defects in material and workmanship for
a period of ONE (1) YEAR from date of original purchase. The limited warranty is
EXTENDED to TWO (2) YEARS from date of original purchase if the product is
originally installed by an authorized Coustic dealer and is accompanied by a valid
sales receipt showing a charge for installation.
Rated Power @ 14.4 V (0.1 % THD):
2 Ohm Stereo
2 x 120 Watts
1 x 240 Watts
2 x 200 Watts
1 x 400 Watts
2 x 300 Watts
1 x 600 Watts
Rated Power @ 14.4 V (0.2 % THD):
4 Ohm Mono
Should a defect occur, Coustic will repair or, at its option, replace defective
units/parts with new or factory rebuilt materials without charge for either parts or
labor to the original purchaser. Replacement units/parts will be warranted for the
remaining portion of the original warranty period.
Frequency Response:
20 –20,000 Hz
+/- 0.5 dB
20 –20,000 Hz
+/- 0.5 dB
20 –20,000 Hz
+/- 0.5 dB
Input Sensitivity:
0.1 – 5 V
100 dB
0.1 – 5 V
100 dB
0.1 – 5 V
100 dB
IMPORTANT: THIS WARRANTY DOES NOT COVER INSTALLATION OR
DAMAGE RESULTING FROM ACCIDENT, MISUSE, ABUSE,
IMPROPER WIRING, INCORRECT VOLTAGE, OPERATING
UNIT AGAINST INSTRUCTIONS IN OWNER’S MANUAL OR
ANY PRODUCT WHICH HAS BEEN OPENED, TAMPERED
WITH OR SERIAL NUMBERS REMOVED.
S/N Ratio @ rated power:
High-Pass Filter Crossover Frequency:
(Continuously Variable, @18 dB/Oct.)
30 - 300 Hz
30 - 300 Hz
30 - 300 Hz
Low-Pass Filter Crossover Frequency:
(Continuously Variable, @18 dB/Oct.)
30 - 300 Hz
30 - 300 Hz
30 - 300 Hz
This warranty does not cover labor costs for removal and/or installation of the unit
for repair. Under no circumstances shall Coustic be liable for any special,
incidental or consequential damages or for any other expenses incurred by reason
of use or sale of this product. This warranty is in lieu of any other warranties
expressed or implied including any implied warranty of merchantability or fitness
for particular use or otherwise.
Bass Boost Level:
Dimensions:
0 - 18 dB @ 45 Hz 0 - 18 dB @ 45 Hz 0 - 18 dB @ 45 Hz
11" W (280 mm)
2 3/8" H (60 mm)
8 1/2" L (215 mm)
11" W (280 mm)
2 3/8" H (60 mm)
13 3/16 L (335 mm) 15 1/2 L (395 mm)
11" W (280 mm)
2 3/8" H (60 mm)
This warranty gives the CONSUMER specific legal rights and he may also have
other rights which vary from state to state. Some states do not follow the
exclusion or limitation of incidental or consequential damages, hence the above
exclusions and limitations may not apply.
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