MB QUART SS750.1 Specification

MB QUART SS750.1 Specification
SUPER SPORT AMPLIFIERS
Autotek is proud to introduce the finest high end car audio products available and would like to thank you for your continued support.
The Super Sport Series products have been designed to a very high level of performance, with features unavailable in any other products.
All of the amplifiers have variable crossovers built in, with added touches such as subsonic filter, bass equalization and a bass remote control
module option that allows bass control from with in reach of the drivers seat.
To insure years of listening pleasure, all amplifiers have a built in diagnostic mode that will detect shorted speaker leads, low impedance,
dangerous high temperatures, DC shorts and will shut down the amp to help prevent serious damage.
INDEX
PAGE
General Instalation Procedure..........................................................................................................................................................1
Amplifier Feature Descriptions.......................................................................................................................................................2-3
SS75.2 / SS125.2 / 2-CHANNEL AMPLIFIER APPLICATIONS...................................................................................................4-5
Full range stereo / Full range mono / 2 way active with mono bass using two 2 channel models
SS75.4 / 100.4 / 4 CHANNEL AMPLIFIER APPLICATIONS.........................................................................................................6-7
4, 3 and 2 channel full range / 2 way active, with mono bass /
front/rear high pass using a 2 channel model for mono sub bass
SS500.1 / SS750.1 / 1 CHANNEL AMPLIFIERS APPLICATIONS...................................................................................................8
Basic A/B mono amplifier application
SS1000.1D / SS1500.1D / 1900.1D / 1 CHANNEL AMPLIFIERS APPLICATIONS....................................................................9-10
Basic D-Class mono amplifier application
Features and Specifications............................................................................................................................................................11
Setting Up Systems After Installation For Best Performance............................................................................................................12
Troubleshooting and Diagnostics....................................................................................................................................................13
Product Warranty............................................................................................................................................................................14
The contents of this manual may not be reproduced or copied with out the
written consent of MAXXSONICS USA, Inc.
GENERAL INSTALLATION PROCEDURE
System Design
The success of any car stereo system relies on several factors, such as the system design, execution of the installation, and system setup. Please
remember that any system is only as good as its weakest link.
Please remember that higher power systems are not necessarily useful purely for high sound pressure levels, but also to establish a headroom capability, to
reproduce musical peaks cleanly without distortion. Lower power amplifiers will clip earlier than their more powerful cousins, and cause loudspeaker failure when
overdriven, due to the harmonics generated by a clipped signal, thus overheating voice coils.
Amplifiers should be mounted with the fins running horizontally for best convection cooling, to minimize overheating. Purchase the best quality RCA cables you can
afford, for reliability and less engine noise interference in the audio system.
Installation
WOOD
It is highly recommended that the amplifier be mounted to a board of MDF or other solid
structure using the 4 mounting screws provided. Avoid mounting the
amplifier to metal as this can introduce noise and other unwanted issues. When mounting
the amplifier, ensure that it is mounted HORIZONTALLY, as shown in the diagram above, for
optimal heat dissipation. Mounting amplifiers to speaker enclosures is not recommended as
this can cause damage to the amplifier components. When choosing a location for
mounting the amplifier, ensure that you check for clearance from wires, gas tank, electrical
devices and brake lines etc.
General:
Run the wiring so that RCA cables are at least 18“ away from power and speaker cables. Keep RCA cables away from electrical devices in the vehicle that can cause
electrical noise, such as electric fuel pumps, emission control modules and other on-board electronic modules.
Power and ground connections(see the features matrix on page 11 for proper gauge cables per amplifier):
Use a sufficient gauge power cable and ground cable using the chart below as reference to what size wire you require. Super Sport series amplifiers require 4 gauge
power wire. In a multi amplifier system, add the total value of the manufacture recommended fusing to get your total system amperage. Some applications may
require multiple runs of power wire to meet the system requirements. In multi amplifier systems it is advisable to mount a large enough fuse right at the battery, and
run one or multiple +12 volt power cables to a fused distribution block near the amplifiers. It is then a simple matter to connect the +12 volt terminal of each amplifier
to the distribution block. During this process, please ensure that the main power fuse is removed to avoid shorting the electrical system. The main fuse must be within
12” of the vehicles battery.
Ground each amplifier with as short a ground lead as possible directly to the vehicle chassis using 4 gauge wire or equivalent to the size of the amplifiers’ power wire.
Use a ground distribution block, if you wish, but it is extremely important to keep the main ground lead from this distribution block to the chassis as short as possible ,
not more than 12“. The ground connection integrity to the chassis is very important, and the best way to achieve a good, solid electrical and mechanical contact is to
use a large round crimp lug, crimped and soldered to the ground cable. The next step is to scrape the paint off the vehicle chassis , slightly larger than the ground
lug, at the connection point. Drill a clearance hole in the chassis, the same size as the lug hole, and use a bolt, spring washer and nut to securely fasten the ground
lug. Use petroleum jelly to coat the bolt/lug connection, to prevent oxidization with time.
TIP: Use the same approach when installing head units, equalizers or any audio equipment for that matter - run short individual grounds from each piece directly to
the vehicle chassis, to minimize ground loops and system noise. All power, ground and speaker connections should be crimped and soldered for reliability. Make sure
that none of the cable insulation can chafe against exposed metal in the vehicle, causing short circuits to the chassis.
NOTE: This Matrix is a general rule
of thumb. Please refer to the
manufacturers specific
requirements. Super Sport
specifications can be found on
page 11.
Safe connection sequence:
After all cables are run, connect speaker wires to the speakers and amplifiers, then run and plug in RCA cables. Next, connect all power, ground, and remote turn on
leads. Now connect all +12 volt cables to the amplifier/s and distribution blocks and fuse holders. Finally, connect the main +12 volt cable to the battery, with the main
fuse removed, and we are almost ready to power up the system.
Power up the system:
The following procedure may seem like overkill, but there is nothing more frustrating when turning on a system for the first time, and it does not work properly
immediately.
First, make sure the head unit is off, and turn all level controls to minimum (counterclockwise), including the head unit volume control. Set all equalizers to 0 dB (no
boost), and all crossover frequency controls at approximate frequencies, as recommended by the loudspeaker manufacturer. Set all input selector and crossover
switches as required for the application. Remove all amplifier fuses, and insert the main fuse at the battery. If the fuse does not blow, you can insert the fuse in one of
the amplifiers, and we are ready to turn on the system. Turn the head unit on, insert a CD, or select a radio station, and increase the head unit volume control. If the
system sounds fine, turn off the head unit, and install fuses in the remaining amplifiers, one by one, till the complete system is powered up and functioning properly.
1
AMPLIFIER FEATURE DESCRIPTIONS
SUPER SPORT AMPLIFIERS:
! Each model is capable of 4 & 2-Ohms stereo per channel, or 4-Ohms mono bridged
operation except the mono amps which are capable of 4, 2 and 1-Ohm loads.
! Tri-Mode operation with any stereo pair of amplifier channels is possible, as with all
bridgeable amplifiers.
! The input sensitivities for rated output powers are variable from 0.2 volt to 5 volt.
! All crossovers are fully variable in their respective ranges.
! Crossover filters are 12dB/Octave.
! A POWER LED indicates the powered up and turned on condition.
The X-OVER slide switch selects the internal crossover functions:
-The input signal is routed directly to the LINE OUT RCA jacks, regardless of the X-OVER
setting simplifying daisy chaining of amplifiers.
-HPF: Selects the built in HIGH PASS filter, variable from 60 Hz to 1.2kHz.
-FULL: Bypasses all crossovers for full frequency range operation.
-LPF: Selects the built in LOW PASS , variable from 30 Hz to 250Hz.
MODE: The mode switch allows you to choose Stereo for full range 2 channel operation or
MONO for bridging operation
HIGH INPUT: If your radio/CD player does not have unbalanced (RCA) outputs, you can
use the HIGH level (wire) inputs.
LINE INPUT: The line input accepts unbalanced (RCA) inputs from 0.2V to 5V.
LINE OUTPUT: The line output passes through signal from the line inputs which allows
you to daisy chain multiple amplifiers from one signal.
The 4 channel amps have the same features as the 2 channel models accept that there are
2 sets of controls.
1 set for channels 1 & 2 and 1 set for channels 3 & 4.
In addition, the 4 channel models have a Mode switch which allows you to select 2, 3 or 4
channel operation.
The X-OVER slide switch selects the internal crossover functions:
-The input signal is routed directly to the LINE OUT RCA jacks, regardless of the X-OVER
setting simplifying daisy chaining of amplifiers.
-HPF: Selects the built in HIGH PASS filter, variable from 60 Hz to 1.2kHz.
-FULL: Bypasses all crossovers for full frequency range operation.
-LPF: Selects the built in LOW PASS , variable from 30 Hz to 250Hz.
MODE: The mode switch allows you to choose Stereo for full range 2 channel operation or
MONO for bridging operation
HIGH INPUT: If your radio/CD player does not have unbalanced (RCA) outputs, you can
use the HIGH level (wire) inputs.
LINE INPUT: The line input accepts unbalanced (RCA) inputs from 0.2V to 5V.
LINE OUTPUT: The line output passes through signal from the line inputs which allows
you to daisy chain multiple amplifiers from one signal.
! All Autotek amplifiers feature a comprehensive diagnostic system, with speaker lead
short circuit, and amplifier DC faults indicated by the red “PROTECT” LED.
! CAUTION: DO NOT OPERATE ANY AMPLIFIER BELOW THE INTENDED
IMPEDANCE.. YOU WILL CAUSE DAMAGE TO THE AMPLIFIER THAT WILL NOT BE
COVERED UNDER THE WARRANTY PRINTED IN THE BACK OF THE MANUAL. 2 &
4 Channel amps are capable of 4 and 2-Ohms wired stereo and 4-Ohms wired
mono bridged. The mono amps are capable of 4, 2 and 1-Ohm.
SS75.2 / SS125.2 2-CHANNEL AMPLIFIERS
L
L
+ - gnd - +
HI INPUT
LEVEL BASS EQ HPF
5V 0.2V
LPF
X-OVER
MODE
FULL LPF HPF MONO
0dB 12dB 60Hz 1.2KHz 30Hz 250Hz
STEREO
R
R
LINE OUT LINE INPUT
Note that the LOW PASS signal is MONO.
-In the LPF position, the HIGH PASS filter acts as a subsonic filter.
-When the LPF mode is selected, a 0 to +12dB, at 45Hz, BASS -EQ
is also switched in.
SS75.4 / SS100.4 4-CHANNEL AMPLIFIERS
CHANNEL 3 / 4
LINE INPUT
CH3
CH4
R
+ - gnd - +
L
+ - gnd - +
HI INPUT
CH3/4
CH1/2
CH1
CH2
LEVEL BASS EQ HPF
5V 0.2V
0dB 12dB 60Hz 1.2KHz 30Hz 250Hz
LEVEL BASS EQ HPF
5V 0.2V
LPF
LPF
X-OVER
MODE
FULL LPF HPF
2 3 4
CHANNEL
X-OVER
0dB 12dB 60Hz 1.2KHz 30Hz 250Hz
CHANNEL 1 / 2
FULL LPF HPF
LINE OUTPUT
Note that the LOW PASS signal is MONO.
-In the LPF position, the HIGH PASS filter acts as a subsonic filter.
-When the LPF mode is selected, a 0 to +12dB, at 45Hz, BASS -EQ
is also switched in.
SS500.1 / SS750.1 1-CHANNEL MONO AMPLIFIERS
-The LINE INPUT signal is routed directly to the LINE OUT RCA jacks, regardless of the XOVER setting simplifying daisy chaining of amplifiers.
-SUBSONIC: Allows you to adjust the crossover filter from 15Hz to 55Hz.
-LPF: Allows yo to adjust the LOW PASS crossover filter from 40Hz to 150Hz.
MODE: The mode switch allows you to choose Stereo for full range 2 channel operation or
MONO for bridging operation
LEVEL: Adjusts the input sensitivity from 0.2 volts to 6 volts.
BASS EQ: The Bass EQ is adjustable from 0db to 12dB.
REMOTE: This is the input jack for the under-dash bass remote module.
LINE INPUT: The line input accepts unbalanced (RCA) inputs from 0.2V to 6V.
LINE OUTPUT: The line output passes through signal from the line inputs which allows you
to daisy chain multiple amplifiers from one signal.
2
REMOTE
CONTROL
POWER
PROTECT
OUTPUT INPUT
BASS EQ
SUB
SONIC
LPF
0dB 12dB
15Hz 55Hz
40Hz 150Hz
LEVEL
L
L
6V 0.2V
R
R
The mono amps are capable of 4, 2 & 1-Ohm loads.
Operating the amp below 1-Ohm can cause damage to the amp not
covered in the warranty.
AMPLIFIER FEATURE DESCRIPTIONS
SUPER SPORT AMPLIFIERS:
SS1000.1D / SS1500.1D 1-CHANNEL MONO AMPLIFIERS
LINE INPUT: Accepts unbalanced RCA inputs from 0.2 volts to 9 volts.
LINE OUTPUT: The unbalanced RCA outputs are set the same as the CROSSOVER
switch on he top mount control.
BALANCED INPUT: Accepts balanced line inputs from 0.4 volts to 12 volts for the
optional MMBLD-1 balanced line driver.
LEVEL: The input level control allows you to match the amplifier input sensitivity to the
output level of the RADIO/CD source from 0.2 volts to 9 volts when using unbalanced
(RCA) and 0.2 volts to 18 volts with the balanced input.
PHASE: The Phase shift is fully adjustable from 0 to 180 degrees.
REMOTE: The RJ45 Remote jack accepts the Bass Remote Module.
BASS EQ: The Bass Boost is fully adjustable from 0 to 18db at 45Hz.
SUBSONIC: The variable Subsonic filter is fully adjustable from 15Hz to 35Hz.
LOWPASS: The built-in low pass frequencies are fully variable from 35 to 250Hz.
POWER: Indicates that the amp has power, ground and remote turn-on input via a green
L.E.D.
PROTECT: Indicates that the amplifier has detected a fault and will not operate. There
are several possible problems that can cause the amplifier to go into the protect mode.
See the trouble shooting guide in the back of the manual for details.
LINE INPUT: Accepts unbalanced RCA inputs from 0.2 volts to 9 volts.
LINE OUTPUT: The unbalanced RCA outputs are set the same as the CROSSOVER
switch on he top mount control.
BALANCED INPUT: Accepts balanced line inputs from 0.4 volts to 12 volts for the
optional MMBLD-1 balanced line driver.
LEVEL: The input level control allows you to match the amplifier input sensitivity to the
output level of the RADIO/CD source from 0.2 volts to 9 volts when using unbalanced
(RCA) and 0.2 volts to 18 volts with the balanced input.
PHASE: The Phase shift is fully adjustable from 0 to 180 degrees.
REMOTE: The RJ45 Remote jack accepts the Bass Remote Module.
BASS EQ: The Bass Boost is fully adjustable from 0 to 18db at 45Hz.
SUBSONIC: The variable Subsonic filter is fully adjustable from 15Hz to 35Hz.
LOWPASS: The built-in low pass frequencies are fully variable from 35 to 250Hz.
POWER: Indicates that the amp has power, ground and remote turn-on input via a green
L.E.D.
PROTECT: Indicates that the amplifier has detected a fault and will not operate. There
are several possible problems that can cause the amplifier to go into the protect mode.
See the trouble shooting guide in the back of the manual for details.
MASTER / SLAVE: This mono amplifier allows you to electronically “link” two amps
together so that you can power a single subwoofer with two amplifiers.
INPUT
OUTPUT
BALANCED
INPUT
L
L
R
R
LEVEL
9V
PHASE
0.2V 0
REMOTE
180
BASS EQ
0dB 12dB
SUBSONIC
LOW PASS
15
35
35Hz
PWR
250Hz PRO
The mono amps are capable of 4, 2 & 1-Ohm loads.
Operating the amp below 1-Ohm can cause damage to
SS1900.1D 1-CHANNEL MONO AMPLIFIERS
INPUT
L
OUTPUT
BALANCED
INPUT
LEVEL
REMOTE
BASS EQ
SUBSONIC
LOW PASS
15
35
PWR
IN
9V
R
PHASE
L
R
0.2V 0
180
0dB 12dB
35Hz
250Hz PRO OUTPUT
MASTER
INPUT
SLAVE
OUT
The mono amps are capable of 4, 2 & 1-Ohm loads.
Operating the amp below 1-Ohm can cause damage to
3
SS75.2 / SS125.2 / 2 CHANNEL AMPLIFIER APPLICATIONS
FULL RANGE STEREO
This is the most basic application for the SUPER SPORT Series 2 channel
amplifiers.
1. Interconnect cable checklist:
Connect the LINE INPUTS to the Radio/CD with good quality RCA cables.
2. Crossover Switch:
The X-OVER switch must be in the FULL position.
3. Crossover frequency control checklist:
N/A for full range operation.
4. Line Level:
Refer to the section “Setting up systems after installation for best performance”.
FULL RANGE
SPEAKERS
NOTE: Minimum final loudspeaker impedances:
4 &-2-Ohms stereo mode or 4-Ohms mono mode
This amplifier will not do 1-Ohm stereo or 2/1-Ohm mono operation.
BRIDGED
POWER
X-OVER
STEREO
MODE
FULL LPF HPF MONO
FUSE
LPF
0dB 12dB 60Hz 1.2KHz 30Hz 250Hz
TO BATTERY + 12 volts VIA FUSE
POWER INPUT
GND REM +12V
5V 0.2V
LEVEL BASS EQ HPF
- LEFT +
HI INPUT
+ - gnd - +
PROTECT
L
SPEAKER OUTPUT
- RIGHT+
L
R
R
LINE OUT LINE INPUT
FULL RANGE
STEREO LINE INPUT
REMOTE TURN-ON
CHASSIS GROUND
FULL RANGE MONO
This application illustrates the basic mono bridging method for all Autotek 2
channel amplifiers.
Switch setting checklist:
- The AMPLIFIER X-OVER switch must be in the FULL position.
Interconnect cable checklist:
A MONO signal source is required, such as would be available from the mono
sub bass output of an active crossover, whether stand alone, or built into a head
unit or equalizer. Important: Do not be tempted to connect the hot, or positive
outputs, from any source together to obtain a mono signal, as this could very
well damage the output stage of that source.
It is necessary to feed the SAME signal to both left and right inputs via a Yadapter RCA cable. Connect the mono speaker positive terminal to the RIGHT
+, and its negative terminal to LEFT -.
Crossover frequency control setting checklist:
N/A for full range operation.
TIP: If you are using the mono sub bass output of an active crossover, there is
nothing wrong with switching in the low pass filter in these amplifiers for a
steeper low pass roll-off.
Minimum final loudspeaker impedance:
- 4-Ohms mono.
FULL RANGE
MONO SPEAKER
LPF
- LEFT +
BRIDGED
PROTECT
0dB 12dB 60Hz 1.2KHz 30Hz 250Hz
POWER
5V 0.2V
LEVEL BASS EQ HPF
X-OVER
STEREO
MODE
FULL LPF HPF MONO
FUSE
HI INPUT
+ - gnd - +
TO BATTERY + 12 volts VIA FUSE
POWER INPUT
GND REM +12V
L
SPEAKER OUTPUT
- RIGHT+
L
R
R
LINE OUT LINE INPUT
FULL RANGE
MONO LINE INPUT
VIA Y-ADAPTER
FROM MONO SOURCE
REMOTE TURN-ON
CHASSIS GROUND
The HIGH LEVEL inputs are used when the radio/CD player does not have RCA cable outputs. You can connect the radio/CD player speaker wires directly
to the amplifier via the high Level Inputs.
Use this connector for 2 CH amplifiers
Use both connectors for 4 CH amplifiers
GRAY: CH 1 Speaker Input +
BROWN: CH 1 Speaker input Black: Chassis Ground
GREEN: CH 2 Speaker Input White: CH 2 Speaker Input +
4
ORANGE: CH 3 Speaker Input +
PINK: CH 3 Speaker input Black: Chassis Ground
BLUE: CH 4 Speaker Input YELLOW: CH 4 Speaker Input +
SS75.2 / SS125.2 2-CHANNEL AMPLIFIER APPLICATIONS
Stereo high pass with mono low-pass in a 2 way active, or bi-amplified system
In this application we will use a 2 channel amplifier for the high frequencies, and
a second one for the low frequencies, or mono sub bass. Please consult the
speaker specifications to determine maximum amplifier power requirements.
Interconnect cable checklist:
Connect the inputs of the HIGHS amplifier to a Radio/CD with good quality RCA
cables. Connect the LINE OUT of the HIGHS amplifier to the inputs of the BASS
amplifier with a stereo RCA to RCA cable.
Mono bass woofer wiring:
Connect the mono speaker positive terminal to the RIGHT +, and its negative
terminal to LEFT -.
Lows amplifier:
- HI PASS (Subsonic filter): 10 Hz to 40 Hz
- LOW PASS: 100 Hz
Please note that these frequency points are suggestions only. Refer to the
loudspeaker manufacturer specifications and the section “Setting up systems
after installation for best performance”
Level control checklist:
- Refer to the section “Setting up systems after installation for best performance”
Minimum final loudspeaker impedances:
- 2-Ohms per channel stereo.
- 4-Ohms mono bridged.
Switch setting checklist:
- Highs amplifier: X-OVER switch in the HPF position.
- Lows amplifier: X-OVER switch in the LPF position.
Crossover frequency control checklist:
Highs amplifier:
- HI PASS: 100 Hz
- LOW PASS: N/A
STEREO
HIGHS
SPEAKERS
LPF
BRIDGED
POWER
0dB 12dB 60Hz 1.2KHz 30Hz 250Hz
TO BATTERY +12 Volts VIA FUSE
X-OVER
FULL LPF HPF MONO
STEREO
MODE
POWER INPUT
GND REM +12V
FUSE
5V 0.2V
LEVEL BASS EQ HPF
- LEFT +
HI INPUT
+ - gnd - +
2 CHANNEL
HIGHS AMPLIFIER
PROTECT
L
SPEAKER OUTPUT
- RIGHT+
L
R
R
LINE OUT LINE INPUT
FULL RANGE
STEREO LINE INPUT
REMOTE TURN-ON
CHASSIS GROUND
STEREO
INTERCONNECT
RCA CABLE
MONO BASS
SPEAKER
X-OVER
STEREO
MODE
FULL LPF HPF MONO
PROTECT
POWER
FUSE
LPF
0dB 12dB 60Hz 1.2KHz 30Hz 250Hz
SUB BASS AMPLIFIER
TO BATTERY +12 Volts VIA FUSE
POWER INPUT
GND REM +12V
5V 0.2V
LEVEL BASS EQ HPF
- LEFT +
HI INPUT
+ - gnd - +
BRIDGED
L
SPEAKER OUTPUT
- RIGHT+
L
R
R
LINE OUT LINE INPUT
2 CHANNEL
REMOTE TURN-ON
CHASSIS GROUND
5
SS75.4 / SS125.4 / 4 CHANNEL AMPLIFIER APPLICATIONS
4 CHANNEL FULL RANGE SYSTEM
Here we show how to use the 4 channel amplifiers as straight forward discrete 4
channel full range units.
Level control checklist:
- Refer to the section “Setting up systems after installation for best performance”
Interconnect cable checklist:
- Connect the four inputs of the amplifier to a Radio/CD with quality RCA cables.
Minimum final loudspeaker impedances:
- 2-Ohms per channel.
Switch setting checklist:
- 1/2CH X-OVER: FULL
- 3/4CH X-OVER: FULL
FULL RANGE
SPEAKERS
- LEFT +
BRIDGED
CH1/2
LINE INPUT
CH3/4
TO BATTERY + 12 Volts VIA FUSE
REMOTE TURN-ON
CHASSIS GROUND
FUSE
CH2
CH4
HI INPUT
+ - gnd + +
+ - gnd + +
CH1
CH3
- RIGHT+
R
L
Channels 3/4:
- HI PASS: N/A
- LOW PASS: N/A
CH 3/4 SPEAKER OUTPUT
Crossover frequency control checklist:
Channels 1/2:
- HI PASS: N/A
- LOW PASS: N/A
POWER INPUT
GND REM +12V
- LEFT +
BRIDGED
MODE
- RIGHT+
2 3 4
CHANNEL
CH ½ SPEAKER OUTPUT
X-OVER
X-OVER
FULL LPF HPF
FULL LPF HPF
PROTECT
CHANNEL 3 / 4
LPF
LPF
0dB 12dB 60Hz 1.2KHz 30Hz 250Hz
0dB 12dB 60Hz 1.2KHz 30Hz 250Hz
LINE OUTPUT
POWER
5V 0.2V
5V 0.2V
LEVEL BASS EQ HPF
CHANNEL 1 / 2
LEVEL BASS EQ HPF
FULL RANGE
STEREO LINE
INPUTS
2 or 3 CHANNEL FULL RANGE SYSTEM
Crossover frequency control checklist:
Channels 1/2:
- HI PASS: N/A
- LOW PASS: N/A
Here we show how to use the 4 channel amplifiers as full range 2 or 3 channel
units by taking advantage of the mono bridging capability of all Autotek
amplifiers.
The following example shows how to create a 3 channel system by mono
bridging channel pair 3 / 4. In order to create a 2 channel system, simply follow
the example to also mono bridge channel pair 1 / 2.
Channels 3/4:
- HI PASS: N/A
- LOW PASS: N/A
- LEFT +
OR HIGHS
SPEAKERS
BRIDGED
CH1/2
LINE INPUT
CH3/4
CH3
CH4
TO BATTERY + 12 Volts VIA FUSE
REMOTE TURN-ON
CHASSIS GROUND
BRIDGED
- LEFT +
- RIGHT+
MODE
CH ½ SPEAKER OUTPUT
2 3 4
CHANNEL
LINE OUTPUT
X-OVER
X-OVER
FULL LPF HPF
FULL LPF HPF
PROTECT
LPF
LPF
POWER
CHANNEL 3 / 4
CHANNEL 1 / 2
0dB 12dB 60Hz 1.2KHz 30Hz 250Hz
0dB 12dB 60Hz 1.2KHz 30Hz 250Hz
LEVEL BASS EQ HPF
5V 0.2V
5V 0.2V
LEVEL BASS EQ HPF
POWER INPUT
GND REM +12V
FUSE
CH2
HI INPUT
+ - gnd - +
+ - gnd - +
CH1
6
- RIGHT+
R
L
1 STEREO
1 MONO
FULL RANGE
LINE INPUTS
CH 3/4 SPEAKER OUTPUT
Interconnect cable checklist:
- Connect the inputs of channel pair 1/2 to a suitable stereo source, e.g. a head
TIP: If you are using the mono sub bass output of an active crossover, there is
unit with good quality RCA cables.
nothing wrong with switching in the low pass filter in these amplifiers for a
- A MONO signal source is required to bridge channel pair 3/4, such as would be
steeper low pass rolloff.
available from the mono sub bass output of an active crossover, whether
standalone, or built into a head unit or equalizer.
Level control checklist:
Important: Do not be tempted to connect the hot, or positive outputs, from any
- Refer to the section “Setting up systems after installation for best performance”
source together to obtain a mono signal, as this could very well damage the
output stage of that source.
Minimum final loudspeaker impedances:
- It is necessary to feed the SAME signal to both left and right inputs via a Y- 2-Ohms per channel in stereo mode.
adapter RCA cable.
- 4-Ohms mono bridged.
- Connect the mono speaker positive terminal to the LEFT +, and its negative
terminal to RIGHT - as shown.
Switch setting checklist:
MONO
OR SUB BASS
- 1/2CH X-OVER: FULL
STEREO
SPEAKER
- 3/4CH X-OVER: FULL
FULL RANGE
SS75.4 / SS125.4 / 4 CHANNEL AMPLIFIER APPLICATIONS
2 way active, or bi-amplified system with mono bass
This application shows how easily a 2 way active system can be implemented
using a 4 channel amplifier. Channels 1 and 2 will be used for highs, and
channels 3 and 4 for mono bass.
Interconnect cable checklist:
- We need to feed the same signal to both sets of channels, so must use 2 Yadapters, one to feed the LEFT signal to channels 1 and 3, and the right signal to
channels 2 and 4, as shown.
Mono bass woofer wiring:
- Connect the mono speaker positive terminal to the LEFT +, and its negative
terminal to RIGHT -.
CH3
- LEFT +
BRIDGED
STEREO
HIGHS
SPEAKERS
FUSE
CH4
CH2
HI INPUT
+ - gnd - +
+ - gnd - +
- RIGHT+
LINE INPUT
CH1/2
CH1
CH 3/4 SPEAKER OUTPUT
R
CH3/4
LINE OUTPUT
POWER INPUT
GND REM +12V
- LEFT +
POWER
BRIDGED
MODE
- RIGHT+
X-OVER
2 3 4
CHANNEL
X-OVER
FULL LPF HPF
FULL LPF HPF
CH ½ SPEAKER OUTPUT
LPF
LPF
TO BATTERY + 12 Volts VIA FUSE
REMOTE TURN-ON
CHASSIS GROUND
PROTECT
CHANNEL 3 / 4
CHANNEL 1 / 2
0dB 12dB 60Hz 1.2KHz 30Hz 250Hz
0dB 12dB 60Hz 1.2KHz 30Hz 250Hz
LEVEL BASS EQ HPF
5V 0.2V
5V 0.2V
LEVEL BASS EQ HPF
RIGHT TO
CHANNELS
3 AND 4
Level control checklist:
Refer to the section “Setting up systems after installation for best performance”
MONO
BASS
SPEAKER
L
CHANNELS
1 AND 3
Please note that these frequency points are suggestions only. Refer to the
loudspeaker manufacturer specifications and the section “Setting up systems
after installation for best performance”
Minimum final loudspeaker impedances:
- 2-Ohms per channel in stereo mode.
- 4-Ohms mono bridged.
Switch setting checklist:
- 1/2CH X-OVER: HP
- 3/4CH X-OVER: LP
Crossover frequency control checklist:
Channels 1/2:
- HI PASS: 100 Hz
- LOW PASS: N/A
LEFT TO
Channels 3/4:
- HI PASS (subsonic): 20 Hz
- LOW PASS: 100 Hz
2 way active, or bi-amplified system with mono bass, and faded highs/lows
Here we present a variation of the previous system. Since this is a 2 way
system, we can use the front outputs from a head unit to drive the highs, and the
rear output to drive the bass This method allows the listener to easily adjust the
relative levels of bass to highs, with the front to rear fade on the head unit.
Channels 1 and 2 will be used for highs, and channels 3 and 4 for mono bass.
Interconnect cable checklist:
- Use good quality RCA leads to connect the inputs of the amplifier to the source
as shown.
- Follow the instructions as per the previous system for switch and crossover
settings.
CH3
BRIDGED
- LEFT +
STEREO
HIGHS
SPEAKERS
FUSE
CH4
CH2
HI INPUT
+ - gnd - +
+ - gnd - +
- RIGHT+
CH1/2
LINE INPUT
CH3/4
CH1
CH 3/4 SPEAKER OUTPUT
R
L
BRIDGED
POWER INPUT
GND REM +12V
- LEFT +
- RIGHT+
MODE
CH ½ SPEAKER OUTPUT
X-OVER
LINE OUTPUT
2 3 4
CHANNEL
X-OVER
FULL LPF HPF
FULL LPF HPF
PROTECT
LPF
LPF
TO BATTERY + 12 Volts VIA FUSE
REMOTE TURN-ON
CHASSIS GROUND
POWER
CHANNEL 3 / 4
CHANNEL 1 / 2
0dB 12dB 60Hz 1.2KHz 30Hz 250Hz
0dB 12dB 60Hz 1.2KHz 30Hz 250Hz
LEVEL BASS EQ HPF
5V 0.2V
5V 0.2V
LEVEL BASS EQ HPF
FULL RANGE
STEREO LINE
INPUTS
MONO
BASS
SPEAKER
7
SS500.1 / SS7500.1 / MONO AMPLIFIER APPLICATIONS
Basic application
These sub bass amplifiers can be used in any of the bi-amplification systems
described in this manual, replacing the 2 channel amplifiers as per the
illustrations.
SUBSONIC:15 Hz to 35 Hz
BASS EQ: 0 to +12dB
PHASE: 0 to 180 degrees
Interconnect cable checklist:
Connect the inputs to a suitable source, e.g. a head unit with good quality RCA
cables. Connect the LINE OUT to the inputs of the system highs amplifier.
Level control checklist:
Refer to the section “Setting up systems after installation for best performance”
Minimum final loudspeaker impedance: 1-Ohm.
Use at least #12 gauge speaker wiring. The amps have dual speaker terminals,
simplifying the hookup of multiple speakers
MONO
SUBWOOFER
Crossover frequency control checklist:
LOW PASS: 35Hz to 250Hz
autotek
FUSE
6V 0.2V
LEVEL
GND REM +12V
R
L
OUTPUT INPUT
POWER INPUT
BASS
SUB
BOOST SONIC
LOW
PASS
0dB 12dB 15Hz 55Hz 40Hz 150Hz
+
REMOTE
CONTROL
DESIGNATED MONO
OUTPUT FROM HEAD UNIT
-
18dB
ATR-1
+
SPEAKER OUTPUT
-
POWER
PROTECT
0dB
L
R
FULL RANGE
STEREO LINE INPUT
TO BATTERY +12 Volts VIA FUSE
REMOTE TURN-ON
CHASSIS GROUND
Y-ADAPTOR
NOT USED
8
+
POWER INPUT
GND REM +12V
FUSE
+
SPEAKER OUTPUT
-
Note: You can use the Radio/CD designated mono line output
or a full range stereo line output. For full range stereo line output,
you will need an optional “Y-Adaptor” as shown
PARALLEL MONO
SUBWOOFERS
2-OHMS EACH MINIMUM
SS1000.1D / SS1500.1D / MONO AMPLIFIER APPLICATIONS
Basic application
These sub bass amplifiers can be used in any of the bi-amplification systems
described in this manual, replacing the 2 channel amplifiers as per the
illustrations.
SUBSONIC:15 Hz to 35 Hz
BASS EQ: 0 to +12dB
PHASE: 0 to 180 degrees
Interconnect cable checklist:
Connect the inputs to a suitable source, e.g. a head unit with good quality RCA
cables. Connect the LINE OUT to the inputs of the system highs amplifier.
Level control checklist:
Refer to the section “Setting up systems after installation for best performance”
Minimum final loudspeaker impedance: 1-Ohm.
Use at least #12 gauge speaker wiring. The amps have dual speaker terminals,
simplifying the hookup of multiple speakers
Crossover frequency control checklist:
LOW PASS: 35Hz to 250Hz
MONO
SUBWOOFER
DESIGNATED MONO
OUTPUT FROM HEAD UNIT
L
R
+
INPUT
L
BALANCED
INPUT
9V
180
-
PHASE
0.2V 0
REMOTE
BASS EQ
35Hz
SUBSONIC
15
35
PWR
250Hz PRO
LOW PASS
POWER
GND REM +12V
0dB 12dB
FULL RANGE
STEREO LINE INPUT
TO BATTERY +12 Volts VIA FUSE
REMOTE TURN-ON
CHASSIS GROUND
Y-ADAPTOR
NOT USED
-
SPEAKER
+
+
Note: You can use the Radio/CD designated mono line output
or a full range stereo line output. For full range stereo line output,
you will need an optional “Y-Adaptor” as shown
POWER
GND REM +12V
18dB
ATR-1
LEVEL
0dB
SPEAKER
+
OUTPUT
R
autotek
PARALLEL MONO
SUBWOOFERS
2-OHMS EACH MINIMUM
9
SS1900.1D MONO AMPLIFIER APPLICATIONS
BASIC APPLICATION
The 1 channel mono amplifiers are capable of 4, 2 & 1 Ohms loads and can be used in any of the “bi-amplifier” systems described in the full range amplifier directions.
SINGLE AMP INSTALLATION PROCEDURE:
1. Connect the amp LINE INPUTS to the Radio/CD player full range or mono line out puts with good quality RCA interconnect cables.
2. Route two 2 gauge or one 0 gauge power cables directly from the vehicle battery, with an in-line fuse, to the amplifier.
4. Connect two 2 gauge ground cables directly to chassis ground with in 36” of the amp.
- Be sure to remove any paint or primer from the ground point.
- Use a nut, bolt and lock washer to secure the ground cable to the chassis ground.
5. Connect the subwoofer(s) in accordance to the diagrams below.
6. Make sure the MASTER/SLAVE switch is in the MASTER position.
Note: The amplifier will not work if the MASTER/SLAVE switch is in the Slave position
FULL RANGE
STEREO LINE INPUT
Y-ADAPTOR
NOT USED
Note: You can use the Radio/CD designated mono
line output or a full range stereo line output.
For full range stereo line output, you will need an
optional “Y-Adaptor” as shown
MONO
SUBWOOFER
PARALLEL MONO
SUBWOOFERS
2 OHMS EACH MINIMUM
L
R
INPUT
+
OUTPUT
L
R
DESIGNATED MONO
LINE INPUT
9V
SPEAKER
+
-
BALANCED
INPUT
-
REMOTE
SPEAKER
+
-
+
INPUT
SLAVE
OUTPUT
250Hz PRO M
ASTER
PWR
35
LOW PASS
POWER
GND
35Hz
CHASSIS GROUND
TO BATTERY +12v VIA FUSE
IN
OUT
Master and Slave amps. The Slave amp crossover switches will be bypassed.
5. Route two 2 or 0 gauge power cables directly to the vehicle battery with an in-line fuse.
6. Connect two 2 or 0 gauge ground cables directly to chassis ground with in 36” of the amp.
- Be sure to remove any paint or primer from the ground point.
- Use a nut, bolt and lock washer to secure the ground cable to the chassis ground.
7. Make sure the Master amp MASTER/SLAVE switch is in the MASTER position. Make sure the Slave
amp MASTER/SLAVE switch is in the SLAVE position.
8. Connect the subwoofer(s) in accordance to the diagrams below.
9. Connect a 12 gauge jumper from Master amp speaker - to Slave amp speaker - as shown below.
Linking two amps for single or dual subwoofer application
FULL RANGE
STEREO LINE INPUT
Y-ADAPTOR
NOT USED
Note: You can use the Radio/CD designated mono
line output or a full range stereo line output.
For full range stereo line output, you will need an
optional “Y-Adaptor” as shown
+12V
POWER
GND
REM
-
SPEAKER
+
+
+12V
POWER
GND
REM
-
SPEAKER
+
+
L
R
INPUT
+
OUTPUT
L
R
9V
SPEAKER
+
BALANCED
INPUT
BASS EQ
0dB 12dB
-
DUAL VOICE COIL
SUBWOOFER
MASTER
PWR
INPUT
SLAVE
250Hz PRO OUTPUT
MASTER
OUT
POWER
GND
35
LOW PASS
INPUT
SLAVE
+12V
35Hz
SUBSONIC
15
IN
OUTPUT
MASTER
IN
OUT
L
R
INPUT
OUTPUT
SINGLE VOICE COIL
SUBWOOFER
+
+12V
POWER
GND
REM
-
SPEAKER
+
+
+12V
POWER
GND
REM
-
SPEAKER
+
L
R
9V
SPEAKER
+
BALANCED
INPUT
REMOTE
BASS EQ
0dB 12dB
-
SLAVE
REM
180
PHASE
0.2V 0
LEVEL
- +
35
LOW PASS
IN
PWR
INPUT
SLAVE
250Hz PRO OUTPUT
MASTER
OUTPUT
MASTER
INPUT
SLAVE
OUT
POWER
GND
35Hz
SUBSONIC
15
IN
OUT
MASTER OUTPUT TO SLAVE INPUT
RCA JUMPER CABLE
12 GAUGE JUMPER WIRE
REMOTE
18dB
ATR-1
REM
180
PHASE
0.2V 0
LEVEL
autotek
+12V
DESIGNATEDMONO
LINE INPUT
10
REM
REMOTE TURN-ON
DUAL AMP INSTALLATION PROCEDURE:
1. Connect the amp LINE INPUTS to the Radio/CD player full range or mono line out puts with good
quality RCA interconnect cables.
2. Plug in the ATR-1 bass remote module into the amp REMOTE INPUT jack.
3. Use an additional ATR-1 Bass remote cable to connect the Master amp REMOTE OUTPUT to the
Slave amp REMOTE INPUT. This will allow the Master amp to control both Master and Slave amps
with just one Bass Remote.
4. Connect an RCA jumper cable from the Master amp MASTER OUTPUT to the Slave amp SLAVE
INPUT. Note: This will “link” the amps so that the Master amp crossover switches will control both the
0dB
POWER
GND
SUBSONIC
15
+12V
18dB
ATR-1
BASS EQ
0dB 12dB
0dB
+12V
REM
180
PHA SE
0.2V 0
LEVEL
autotek
TWO SINGLE COIL
SUBWOOFERS
- +
+
0
autotek SUPER SPORT SERIES AMPLIFIER FEATURES
11
SETTING UP SYSTEMS AFTER INSTALLATION FOR BEST PERFORMANCE
SS75.2 / SS125.2 / SS75.4 / SS125.4
General:
At this point you are ready to get more specific on the settings for your amplifier.
High Pass:
-When in Hi Pass operation, this setting acts as a low frequency cut off for your system reproduction. The point that you set it at cuts off any frequencies from reproduction beyond this
point. The 12 o’clock position is a great starting point. EXAMPLE: If you adjust the High Pass to 100Hz, the amplifier will not play frequencies below 100Hz but will play frequencies from
100Hz to the chosen Low Pass frequency.
-When in Low Pass/Bandpass operation, this setting acts as a low frequency cut off for your system reproduction aka Subsonic Filter. The point that you set it at cuts off any frequencies
from reproduction beyond this point. The 12 o’clock position is a great starting point. EXAMPLE: If you adjust the High Pass to 25Hz, the amplifier will not play frequencies below 25Hz
but will play frequencies from 25Hz to the chosen Low Pass frequency.
-When in Flat/Full operation, the High Pass crossover is bypassed.
Bass EQ:
This setting is a fixed bass boost at 45Hz that is variable from 0-12dB. This feature provides impact to your bass, but if not adjusted correctly, it can be over used and cause damage to
your speakers and amplifiers. It is best to slowly turn this setting clockwise until the desired punch is felt. It is not recommended to exceed the 12 o’clock position unless listening at a low
volume or a low recording quality as this can result in high distortion and possibly clipping.
Low Pass:
The Low Pass control acts as a ceiling and doesn’t allow frequencies to the right of the desired setting to be reproduced. Turning the potentiometer all the way to the right is a great
starting point. EXAMPLE: If you adjust the Low Pass to 120Hz, the amplifier will not play frequencies above 120Hz but will play frequencies from 120Hz to the chosen Hi Pass or
Subsonic frequency.
-When in Hi Pass operation, this setting is bypassed.
Level Control Setup:
Ensure that the Level is turned completely to the left prior to turning the system on. Next you should insert a CD or cassette that you are familiar with to use as a reference, and turn the
head unit volume control to about 80% of its full setting. The system sound level will of course be very low, and the following procedures will help you to match the amplifier input
sensitivities properly to the head unit output signal level.
It is important to match the amplifier LEVEL input sensitivity to the Radio/CD output sensitivity. This can be located in the Radio/CD manual.
If the Radio/CD output sensitivity is 2 volts, then adjust the amplifier LEVEL input to 2 volts.
If you are not sure what the Radio output sensitivity is, follow these general guide lines:
Turn the level control up slowly, till you hear distortion, then back off a few degrees on the control. If at any point your amplifier goes into protection, you will need to turn the Level to the
left a bit and then try again. If you reach a point where the output does not increase, stop turning the Level control to the right as the amplifier/speaker combo has reached its maxx
output in this application.
2 or 3 way active systems (all):
Always start with the bass, or low frequency amplifier as a reference, by turning its control up to the point where distortion is audible, and back it off some.
Now adjust the level control for the highs or tweeter channels in a 2 way active system, to balance the highs to lows.
In a 3 way active system, match the midrange level to the bass, and then the highs to the midrange and bass. It may be necessary to perform a few iterations of the midrange and highs level
SS500.1 / SS750.1 / SS1000.1D / SS1500.1D / SS1900.1D
General:
At this point you are ready to get more specific on the settings for your amplifier.
Subsonic:
This setting acts as a low frequency cut off for your system bass reproduction. The point that you set it at cuts off any frequencies from reproduction beyond this point. The 12 o’clock
position is a great starting point. EXAMPLE: If you adjust the Subsonic to 25Hz, the amplifier will not play frequencies below 25Hz but will play frequencies from 25Hz to the chosen Low
Pass frequency.
Bass EQ:
This setting is a fixed bass boost at 45Hz that is variable from 0-10dB. This feature provides impact to your bass, but if not adjusted correctly, it can be over used and cause damage to
your subwoofers and amplifiers. It is best to slowly turn this setting clockwise until the desired punch is felt. It is not recommended to exceed the 12 o’clock position unless listening at a
low volume or a low recording quality as this can result in high distortion and possibly clipping.
Low Pass:
The Low Pass control acts as a ceiling and doesn’t allow frequencies to the right of the desired setting to be reproduced. The 12 o’clock position is a great starting point. EXAMPLE: If you
adjust the Low Pass to 80Hz, the amplifier will not play frequencies above 80Hz but will play frequencies from 80Hz to the chosen Subsonic frequency.
Phase:
The variable Phase adjustment allows you to change the relative time that the waveform meets your ear. With standard subwoofer installations where the subwoofer is behind you, the
Phase should generally be at 0. When subwoofers or woofers are in the kick panels or door panels, the Phase adjustment is useful in delaying the timing of the wave meeting your ear by
adjusting the potentiometer to 180 degrees.
Level Control Setup:
Ensure that the Level is turned completely to the left prior to turning the system on. Next you should insert a CD or cassette that you are familiar with to use as a reference, and turn the
head unit volume control to about 80% of its full setting. The system sound level will of course be very low, and the following procedures will help you to match the amplifier input
sensitivities properly to the head unit output signal level.
It is important to match the amplifier LEVEL input sensitivity to the Radio/CD output sensitivity. This can be located in the Radio/CD manual.
If the Radio/CD output sensitivity is 2 volts, then adjust the amplifier LEVEL input to 2 volts.
If you are not sure what the Radio output sensitivity is, follow these general guide lines:
Turn the level control up slowly, till you hear distortion, then back off a few degrees on the control. If at any point your amplifier goes into protection, you will need to turn the Level to the
left a bit and then try again. If you reach a point where the output does not increase, stop turning the Level control to the right as the amplifier/subwoofer combo has reached its maxx
output in this application.
12
Sit back and enjoy the music!
TROUBLESHOOTING A SYSTEM
The key to finding the problem in a misbehaving sound system is to isolate parts of that system in a logical fashion to track down the fault.
Description of the PROTECT system built into all Autotek amplifiers
The diagnostic system will shut down the amplifier, until reset by turning the head unit off, and back on. This state of affairs will be indicated by the front panel PROTECT
LED lighting up under the following conditions:
1 - A sort circuit on the loudspeaker leads.
2 - An internal amplifier fault that causes a DC offset on the loudspeaker output.
Should the amplifier go into protect mode, simply disconnect all RCA and speaker leads, while keeping +12 volt, power ground and remote leads connected.
1. Now turn the amplifier back on, and if the diagnostic LED lights, the amplifier has an internal fault.
2. If not, plug the RCA cables back, and reset the amplifier. If it goes into diagnostic now, the fault lies in the input, either with bad cables or source unit.
3. If the amplifier seems fine with RCA cables plugged in, connect the speakers, one at a time, and if one of the speakers or its wiring is faulty, it will activate the diagnostic
system.
Amplifier heatsink overheating
The amplifiers will shut down when the heatsink temperature reaches 80 degrees centigrade, and turn back on once the unit has cooled down below that point.
Causes of overheating:
1 - Inadequate cooling - relocate or remount to provide better natural airflow over the fins.
2 - Driving high power levels into low impedances - back off on the volume control, and/or make sure you are not loading the amplifier with less than the recommended
loudspeaker impedance.
Low output power
1 - Check that level controls have been set up properly.
2 - Make sure that the battery voltage, as measured at the amplifier’s +12 volt and ground terminals, is 11 volts or more.
3 - Check all +12 volt and ground connections.
Fuses blowing
1 - The use of loudspeaker impedances below the recommended minimums will draw more current - check.
2 - A short on the main +12 volt cable from the battery to the vehicle chassis will cause the main fuse to blow.
3 - If an amplifier fuse blows continually, with only +12 volt, ground and remote leads connected, the amplifier may be faulty.
System does not turn on
1 - Check all fuses.
2 - Check all connections.
3 - Measure the +12 volt and remote turn on voltages at the amplifier terminals. If these are non existent or low, take voltage measurements at fuse holders, distribution
blocks, the head unit’s +12 volt and remote leads to localize the problem.
Noise problems
System noise can be divided into two categories, hiss, and electrical interference.
Hiss, or white noise
1 - High levels of white noise usually occurs when amplifier level controls are turned up too high - readjust according to the procedures in section ”Setting up systems after
installation for best performance”
2 - Another major problem that can cause excessive hiss, is a noisy head unit - unplug the amplifier input RCA cables, and if the hiss level reduces, the source unit is at fault.
Electrical interference
The inside of an automobile is a very hostile electrical environment. The multitude of electrical systems, such as the ignition system, alternator, fuel pumps, air conditioners,
to mention just a few, create radiated electrical fields, as well as noise on the +12 volt supply and ground. Remember to isolate the problem - first unplug amplifier input RCA
cables, if the noise is still present, check the speaker leads, if not, plug the RCA’s back, and investigate the source driving the amplifier, one component at a time.
A ticking or whine that changes with engine RPM:
1 - This problem could be caused by radiation pickup of RCA cables too near to a fuel pump or a distributor, for instance, - relocate cables.
2 - Check that the head unit ground is connected straight to the vehicle chassis, and does not use factory wiring for ground.
3 - Try to supply the head unit with a clean +12 volt supply directly from the battery +, instead of using a supply from the in dash wiring/fusebox.
A constant whine:
This type of noise can be more difficult to pinpoint, but is usually caused by some kind of instability, causing oscillations in the system.
1 - Check all connections, especially for good grounds.
2 - Make sure that no speaker leads are shorting to exposed metal on the vehicle chassis.
3 -RCA cables are notorious for their problematic nature, so check that these are good, in particular the shield connections.
13
autotek
SUPER SPORT AMPLIFIERS
Maxxsonics Limited Warranty
As the manufacturer of Maxxsonics, Autotek, Crunch, MB Quart and Hifonics car audio products,
Maxxsonics USA Inc. Warrants to the original consumer purchaser the amplifier to be free from
defects in material and workmanship for one (1) Year from date of purchase.
All other parts and accessories of the system are warrantied to be free from defects in
material and workmanship for one (1) year from date of purchase. Maxxsonics will
repair or replace at it’s option and free of charge during the warranty period, any system
component that proves defective in materials and workmanship under normal installation,
use and service provided that the product is returned to the authorized Maxxsonics dealer
from where it was purchased. A photo copy of the original receipt must accompany the
product being returned.
Valid purchase receipts will contain the name and address of the authorized reseller.
Any damage to the product as a result of misuse, abuse, accident, incorrect wiring,
improper installation, alteration of date code or bar code labels, revolution, natural
disaster, or any sneaky stuff because someone messed up, repair or alteration out side
of our factory or authorized service centers and any thing else you have done that you
should not have done is not covered.
This warranty is limited to defective parts and specifically excludes any incidental
or consequential damages connected therewith. This warranty is not to be construed
as an insurance policy.
Warranty on installation labor, removal, re-installation and freight charges are not the
responsibility of Maxxsonics USA Inc.
Warranty products damaged as a result of insufficient or improper packing materials
are not covered by this limited warranty and such damaged product will be returned
“as is” at the expense of the owner.
14
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