Audiovox Stereo Amplifier XTM 600 User Manual

Model AXTM-600  
600 Watt Mono Block  
MOSFET Amplifier  
OWNER'S  
MANUAL  
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HIGH PERFORMANCE STEREO AMPLIFIER  
This power amplifier has been designed to provide high Quality performance with a  
minimum of maintenance. However, it's performance will only be as good as the care  
and quality of components with which it is installed. We therefore advise that you  
read these instructions very carefully to familiarize yourself with the product and it's  
features.  
HELP!  
Monday-Friday 8:30am - 7:00pm Eastern  
1-800-645-4994  
Should you require assistance with the installation or wiring so this unit, please call  
our toll-free "HELP" line at 1-800-645-4994 during the days/hours shown.  
Saturday  
9:00am - 5:00pm Eastern  
SPECIFICATIONS  
Maximum Output Power:  
600 Watts  
300 Watts RMS  
@ 4 Ohms  
Filter type:  
Selectable Full/Low-pass  
Crossover @ 18dB/Octave  
LPF 50-250 Hz (variable)  
HPF 50-250 Hz (Variable)  
Filter Crossover:  
Output Impedance:  
Frequency Response:  
Signal / Noise Ratio:  
Input Impedance:  
2 - 8 Ohms (Mono)  
10 - 30KHz. 1 dB  
90 dB  
Bass Boost Level:  
Bass Boost Frequency:  
Supply Voltage:  
0 - 18dB (Variable)  
40 - 80Hz (Variable)  
12 volts, negative ground  
20 amps.  
Low-Level 10K Ohms  
High-Level 100 Ohms  
Fuse Rating:  
Input Sensitivity:  
Low-Level 200 mV - 8 V  
High-Level 2V - 10 V  
Dimensions (W X H X D):  
295 mm X 54.3 mm X 230 mm  
11-5/8" X 2-1/8" X 9”  
* Due to continuing improvement, Audiovox reserves the right to change features and design without notice.  
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PRECAUTIONS  
1. Although this unit is designed with built-in self-protection circuits, there may be a possibility of damage if it is not wired  
correctly. Please follow the wiring instructions carefully for the type of system being used.  
2. The last lead to be connected is the wire to the positive( ) terminal of the battery. Connect this wire only after having  
+
completed and checked all other connections to the amplifier.  
3. By nature of its design, a power amplifier generates heat and requires good air circulation around it to dissipate that  
heat. Do not install the amplifier in an enclosed area which does not permit adequate air circulation. Should the  
temperature of the unit rise too high, the internal thermal sensors will shut off operation until it has cooled down  
sufficiently.  
4. If fuse replacement is necessary, use only fuses of the same ampere rating as originally supplied with the unit. The  
use of fuses with incorrect ratings may cause serious damage to the amplifier. If fuses blow consistently, carefully  
check all electrical connections to the unit.  
5. Supply of adequate battery voltage is critical to the proper operation of the power amplifier. The leads to the battery  
and chassis ground must be of a thick enough gauge to provide this voltage to the amplifier. We recommend #10 gauge  
wire or thicker (smaller gauge #) for the battery and ground leads.  
6. Make certain that the speaker(s) to be used with this amplifier are capable of handing the output power (wattage) of  
the unit. Use of speaker(s) not rated for the output of this amplifier may cause damage to or failure of the speaker(s)  
for which Audiovox will not be liable.  
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INSTALLATION INSTRUCTIONS  
INSTALLATION DIAGRAM  
1. Select a mounting area where the amplifier will  
have sufficient air circulation for proper cooling.  
Inadequate air circulation will cause the temperature  
of the amplifier to rise and will trigger the thermal  
protection mode.  
2. Place the amplifier on the mounting surface and  
mark the locations of the four mounting holes as  
shown in the illustration.  
3. Remove the amplifier and drill a 1/8" hole at  
each of the four locations.  
CAUTION: Before drilling the holes, look at the  
underside of the mounting surface. Always check  
carefully to avoid drilling into wiring, braces, fuel  
or brake lines.  
CHECK BEFORE YOU DRILL!  
4. Secure the amplifier to the mounting surface using  
The self-tapping screws provided.  
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WIRING INSTRUCTIONS  
The wiring of your amplifier will depend on the system and speakers you are using but will either be a stereo, mono, or  
mixed-mono application. The following pages illustrate the input and output wiring for these types. please refer to the  
appropriate diagrams for the system configuration you are using. The power and speakers wire connections for this amplifier  
are made via screw tightened terminal blocks. Loosen the screw for the connection to be made and fully insert the wire  
(strip 1/2" of insulation from the end) under the respective screw on the side panel (crimp-on "U" terminals are provided  
to simplify wiring and we recommend their use). Tighten the screw down to secure the wire.  
1. Power Connection  
The battery terminal (BATT) must be connected directly to the positive terminal of the vehicle battery to provide an  
adequate voltage source and minimize noise. Connecting the battery terminal lead to any other point (such as the fuse  
block) will reduce the power output and may cause noise and distortion. Use only ##1100 gauge or thicker (smaller gauge  
#) wire for this lead and connect it to the terminal of the battery after all other wiring is completed.  
2. Ground Connection  
The ground terminal (GND) connection is also critical to the correct operation of the amplifier. Use a wire of the same  
gauge as the power connection (##1100 or thicker) and connect it between the ground terminal (GND) of the amplifier and  
a metal part of the vehicle close to the mounting location. This wire should be as short as possible and any paint or rust  
at the grounding point should be scraped away to provide a clean metal surface to which the end of the ground wire can  
be screwed or bolted.  
3. Remote Turn-On Connection  
The amplifier is turned on by applying +12 volts to the remote turn-on terminal (REM). The wire lead to this terminal  
should be connected to the "Auto-Antenna" lead from the car stereo which will provide the +12 volts only when the car  
stereo is turned on. If the car stereo does not provide an Auto-Antenna lead, the remote turn-on lead may be wired to  
an "Accessory" or "Radio" terminal in the car's fuse block. This will turn the amplifier on and off with the ignition key,  
regardless of whether the car stereo is on or off. The remote turn-on lead does not carry large currents, so #20 gauge  
wire may be used for this application.  
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WIRING INSTRUCTIONS  
4. Speaker Connections  
Depending on the type and number of speakers used with the amplifier, wire them to the speaker terminals as per the  
appropriate wiring diagram. For most applications, #16 gauge wire should be used for the speaker leads but in no case  
thinner than #18 gauge. For leads in excess of 10 feet, #14 gauge is recommended. When wiring the speakers, pay  
careful attention to the polarity of the terminals on the speakers and make certain they correspond to the polarity of the  
corresponding terminals on the amplifier. DO NOT ground any speaker leads to the chassis of the vehicle.  
5. Input Connections  
This amplifier features both high and low-level input capability. Use either the low-level or high-level inputs, not both.  
If low-level outputs are provided from the car stereo, it is recommended that the low-level inputs be used for lowest  
distortion and best performance. Use good quality shielded audio cables with RCA plugs at both ends to connect  
the stereo to the amplifier and keep the cable lengths to a minimum to avoid noise.  
If the car stereo does not provide low-level outputs, the amplifier may be connected via the speaker (high-level)  
outputs from the stereo. Wire the speaker leads from the car stereo to the 5-pin adaptor harnesses as shown in the  
diagram (shielded cable is not required for this application) and plug the connectors into the mating High-Level Input  
socket on the amplifier. Carefully splice and insulate all wire connections.  
CAUTION: Use either the low-level or the high-level inputs on the amplifier.  
DO NOT use both input levels at the same time.  
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INPUT WIRING DIAGRAM  
CAR STEREO  
Left Speaker  
Right Speaker  
Gray  
Brown  
Black  
Green  
White  
RCA TYPE SHIELDED  
EXTENSION CABLES  
(NOT INCLUDED)  
IMPORTANT  
USE EITHER HIGH-LEVEL OR  
LOW-LEVEL INPUT, NOT BOTH.  
HIGH-LEVEL (SPEAKER) INPUT  
(WIRE SIDEVIEW)  
LOW-LEVEL INPUT  
HI-INPUT  
X-OVER  
LPF  
PWR  
PRT  
R
L
L
+
R
+
L
R
FULL  
GND  
40Hz  
80Hz  
MIN  
MAX  
120Hz  
0dB  
18dB  
50Hz  
BASS BOOST  
FRQ  
GAIN  
BASS  
BOOST  
LPF  
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OUTPUT WIRING DIAGRAM  
EXISTING SCREW OR BOLT CLEAN PAINT, RUST, DIRT  
OR GREASE FROM AREA FOR GOOD CONNECTION.  
GROUND METAL  
SECTION OF VEHICLE  
FUSE  
BATT  
REM  
GND  
SPEAKER  
USE #10 GAUGE  
WIRE (SEE TEXT)  
SPEAKER2(MONO)  
2-8 OHM  
GROUND  
CAR STEREO  
BATTERY  
FOR 12 VOLT USE ONLY  
AUTO-ANTENNA LEAD  
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OPERATION  
2 1  
3
5
4
8
6
7
HI-INPUT  
FUSE  
X-OVER  
PWR  
R
L
L +  
R +  
L
R
LPF  
HPF  
PRT  
GND  
FULL  
MIN  
MAX  
0dB  
18dB  
50Hz  
250Hz  
LPF  
50Hz  
250Hz  
HPF  
GAIN  
BASS  
BOOST  
BATT  
REM  
GND  
SPEAKER1  
SPEAKER2  
After initial set-up, the amplifier should not require any  
further adjustment unless there is a change in the car  
stereo or speaker system with which it is used.  
Off to a normal operating range. If activated by an  
overload condition, the source of the overload must be  
found and corrected to resume operation of the amplifier.  
Most overload conditions are caused by mis-wiring or  
operation into incorrect speaker loads. Re-check all  
wiring and connections if this situation occurs and correct  
as necessary.  
1
Power Indicator Lamps  
The Power Indicator Lamps will light to indicate that the  
unit is connected to the battery and that the Remote  
Turn-On terminal is receiving +12 volts, thus turning  
on the amplifier  
3 Level (Gain) Controls  
The amplifier is capable of operating from sources  
supplying a wide range of input levels. The Level controls  
should initially be set to the mid-rotation position.  
If it is found that there is not enough output even when  
the volume control on the car stereo is at its maximum  
setting, adjust the Level control to increase the output  
from the system.  
2
Protection Mode LED  
The LED illuminates red to indicate that the self-  
protection circuits have been activated and have shut  
off operation of the amplifier. The protection circuits  
may be triggered By the temperature of the unit rising  
above a safe level or by an overload condition. If  
activated by a rise in temperature, the unit will resume  
operation after cooling  
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If, however, there is still output from the amplifier when  
the car stereo volume control is at its minimum setting,  
or the output level increases too fast with a small  
rotation of the volume control, adjust the Level control  
to decrease the output from the system.  
6
HPF Crossover Frequency Control  
This Control selects the crossover frequency when the  
4
Sub woofer Crossover Selector  
is in the "HPF" setting.  
Adjust it to the appropriate position for the characteristics  
and crossover frequency requirements of the speaker  
system with which the amplifier is being used.  
Once the correct setting is found, these controls should  
not require any further adjustment.  
7 Bass Boost Frequency Control  
4
Sub-Woofer Crossover Selector  
Allows the addition of up to +18dB increase in sound  
level in lower frequencies (0~18dB).  
This switch allows selection of the frequency filters that  
permit the amplifier to be used to reproduce the entire  
audio range or just the bass range.  
In the "FULL" position of the switch, the response is  
flat and unaffected so the entire audio frequency  
range is reproduced by the amplifier. Use this setting  
if the amplifier is being used to power a full range  
speaker system.In the "LPF" (Low-Pass Filter)setting,  
only the bass frequencies below the frequency set by  
8
Fuse  
The circuitry of the amplifier is protected from damage by  
an automotive-type fast-blow fuse. If fuse replacement  
is necessary, use only fuses of the of the same ampere  
rating as originally supplied with the unit. The use of fuses  
with incorrect ratings may cause serious damage to the  
amplifier. If fuses blow consistently, carefully check all  
electrical connections to the unit.  
the Crossover Frequency Control  
will be amplified  
5
and fed to the speakers. Use this setting if the  
amplifier is being used to power a sub-woofer speaker  
system.  
5 LPF Crossover Frequency Control  
This Control selects the crossover frequency when  
the Sub woofer Crossover Selector  
is in the  
4
"LPF" setting.Adjust it to the appropriate position for  
the characteristics and crossover frequency  
requirements of the speaker system with which the  
amplifier is being used.  
-11-  
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90 DAY/122MONTH LLIIMITED WAARRANTY  
Applies to car stereo power amplifiers, equalizers and accessories.  
AUDIOVOX CORPORATION (the Company) warrants to the original retail purchaser of this product that should this product or any part thereof,  
under normal use and conditions, be proven defective in material or workmanship within 90 days from the date of original purchase, such  
defect(s) will be repaired or replacedwith new or reconditioned product (at the Company's option) without charge forparts and repair labor.  
After the initial 90 day period and for a period of 12 months from the date of original purchase, the Company will supply at no charge a  
replacement for any defective part(s) but will charge for the labor to repair the product.  
Toobtain repair or replacement within the terms of this Warranty, the product is to be delivered withproof of warranty coverage (e.g. dated  
bill of sale), specification of defect(s), transportation prepaid, to an approved warranty station orthe Company at the address shown below.  
This Warranty does not extend to the elimination of externally generated static or noise, to correction of antenna problems, to costs incurred  
for installation, removal or reinstallation of the product, or damage to tapes, compact discs speakers, accessories, or vehicle electrical  
systems.  
This Warranty does not apply to any productor part thereof which, in the opinion of theCompany, suffered or has been damagedthrough  
alteration, improper installation, mishandling, misuse, neglect, or accident, or by removal or defacement of the factoryserial number/bar code  
label(s). THE EXTENT OF THE COMPANY'S LIABILITY UNDER THIS WARRANTY IS LIMITED TO THE REPAIR OR REPLACEMENT  
PROVIDED ABOVE AND, IN NO EVENT, SHALL THE COMPANY'S LIABILITY EXCEEDTHE PURCHASE PRICE PAID BY PURCHASER FOR  
THE PRODUCT.  
This Warranty is in lieu of all other express warranties or liabilities. ANY IMPLIED WARRANTIES, INCLUDING ANY IMPLIED WARRANTY  
OF MERCHANTABILITY, SHALL BE LIMITED TO THE DURATION OF THIS WRITTEN WARRANTY. ANYACTION FOR BREACH OF ANY  
WARRANTY HEREUNDER INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY MUST BE BROUGHT WITHIN A PERIOD OF 30  
MONTHS FROM DATE OF ORIGINAL PURCHASE. IN NO CASE SHALL THE COMPANY BE LIABLE FOR ANY CONSEQUENTIAL OR  
INCIDENTAL DAMAGES FOR BREACH OF THIS OR ANY OTHER WARRANTY, EXPRESS OR IMPLIED, WHATSOEVER. No person or  
representative is authorized to assume for the Companyany liability other than expressed herein in connection with thesale of this product.  
Some states do not allow limitations on how long an implied warranty lasts or the exclusion orlimitation of incidental or consequential damage  
so the above limitations or exclusion may not apply to you. This Warranty gives you specific legal rights and you may also have other  
rightswhich vary from state to state.  
U.S.A.  
: AUDIOVOX CORPORATION, 150 MARCUS BLVD., HAUPPAUGE, NEW YORK 11788  
.
1-800-645-4994  
CANADA  
: CALL 1-800-645-4994 FOR LOCATION OF WARRANTY STATION SERVING YOURAREA  
128-5422A  
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C
2003  
Audiovox Electronics Corporation, Hauppauge, N.Y.  
Printed in Korea  
128-6558  
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