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TROUBLESHOOTING A SYSTEM

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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

Amplifier heatsink overheating

Low output power

Fuses blowing

System does not turn on

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 -Asort 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 RCAand speaker leads, while k12 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 RCAcables 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.

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.

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.

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.

1 - The use of loudspeaker impedances below the recommended minimums will draw more current - check.
2 -Ashort 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.

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.

Causes of overheating:

Noise problems

Hiss, or white noise

Electrical interference

System noise can be divided into two categories, hiss, and electrical interference.

1 - High levels of white noise usually occurs when amplifier level controls are turned up too high - readjust according to the procedures in section

2 -Another major problem that can cause excessive hiss, is a noisy head unit - unplug the amplifier input RCAcables, and if the hiss level reduces, the source unit is at fault.

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.

1 - This problem could be caused by radiation pickup of RCAcables 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 b, instead of using a supply from the in dash wiring/fusebox.

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 -RCAcables are notorious for their problematic nature, so check that these are good, in particular the shield connections.

”Setting up systems after

installation for best performance”

A ticking or whine that changes with engine RPM:

A constant whine:

We have also provided several videos that will help you with your battery,

alternator and even Big 3 upgrades at www.youtube.com/maxxsonicsusainc .

Summary of Contents for 2050.4

Page 1: ...ATA800 2 ATA1200 2 ATA2000 2 ATA1000 4 ATA1400 4 ATA2000 4 ATA1200 1 ATA2000 1 AMPLIFIERS TREAD LOUDLY R ATA SERIES...

Page 2: ...ng your music for years to come The car audio professionals at Maxxsonics recommend that you only use one of the MAXXLINK amplifier installation kits to install this amplifier The MAXXLINK amplifier i...

Page 3: ...is 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 Use the sam...

Page 4: ...orchannels3 4 Inaddition the4channelmodelshavea switchwhichallowsyoutoselect2 3or4channeloperation Switchto2channelifyouonlyhave1setofRCA sinCH1 2and the unit will automatically supply signal to chann...

Page 5: ...the positionandthe shouldbeinthe position LPF 11o clock Interconnectcablechecklist Important Switchsettingchecklist AMPLIFIERX OVER LPF MODE MONO Crossoverfrequencycontrolsettingchecklist Minimumfinal...

Page 6: ...it or equalizer If you only have 1 set of RCA outputs from your headunit you can simply connect those to the inputs for ch 1 2 and switch the to 2ch The amplifier will auto sum the signal and providem...

Page 7: ...s woofer wiring Switch setting checklist 4 channel highs amplifier 1 2CH X OVER HPF 3 4CH X OVER HPF 2 channel bass amplifier X OVER switch LPF Crossover frequency control checklist 4 channel highs am...

Page 8: ...ablechecklist Crossoverfrequencycontrolchecklist LOWPASS 40Hzto150Hz SUBSONIC 15Hzto55Hz BASSEQ 0to 12dB Levelcontrolchecklist Minimumfinalloudspeakerimpedance ATA1200 1iscapable4 2 Ohms notcapableof1...

Page 9: ...2 Ohm 4 x 250 4 x 350 4 x 500 1 x 1200 1 x 1000 1 Ohm n a n a n a n a n a Mono Bridged at 4 Ohm 2 x 500 2 x 700 2 x 1000 n a n a Mono Bridged at 2 Ohm n a n a n a n a n a Mono Bridged at 1 Ohm n a n...

Page 10: ...ting point EXAMPLE If you adjust the HPF to 100Hz the amplifier will not play frequencies below 100Hz but will play frequencies from 100Hz to the highest frequency the amplifier is capable of reproduc...

Page 11: ...undandremoteleadsconnected theamplifiermaybefaulty 1 Checkallfuses 2 Checkallconnections 3 Measure the 12 volt and remote turn on voltages at the amplifier terminals If these are non existent or low t...

Page 12: ...urchase 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 c...

Page 13: ......

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