Question about AudioBahn A8000T Car Audio Amplifier

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Solution my amp A8000T is in protective mode and the fuses are blown but when replace they just blow out again without turning on the radio

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Re: solution

Sounds like you have shorted output transistors or IC'S There is one test is to disconnect all the speakers and see if they still blow. If they do then you need to have the amp fixed or replaced. If they dont blow try connecting up each speaker till the unit blows the fuse asjust maybe you blew out a crossover or a speaker or two?? If you have an active type crossover then I would check that device as well. Good Luck

Posted on Apr 22, 2006

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I have an a8000t amp with the protection light on, is the amp broke?

Disconnect the speaker wires then the power and ground completly. Then power up the amp and if the protection light turn on the you have an interanl problem if not then you ohm is problably to low and causing the amp to go into protections.


Nov 09, 2010 | AudioBahn A8000T Car Audio Amplifier


My amp keeps TURNING off and on.

If it just started, you have an equipment or wiring problem. Check the wires first, that's easy. Otherwise, the amp may be bad, check the warranty if its new. Maybe you can get a replacement.

If it's always happened, some cars have an factory amp for the rear factory speakers hidden in the wiring. Sometimes between body panels. If you didn't bypass that, you're more than likely blowing out the new amp with too much power causing it to shut itself down. (protected mode or keep blowing fuses) Could be a blown speaker, bad ground, internal damage, RCA cable problem, the list goes on and on. Find out the preoutput voltage of your headunit and set the gain to what that is and nothing else LEAVE IT THERE, the gain isnt a volume knob for your amp its to get the amp and the radio on the same page (i.e. radios at 50% volume and so is the amp) if you turn it down too low that will make the amp very sensitive to volume adjustments and your amp will be at 100% while the raidos at like 50 or 75% and once you go past the 50 or 75 on the radio the amps going to keep trying to play higher even though its already maxing out which is going to cause it to clip and cause distortion untill it goes into protect mode. Hope this was helpfull to some one

on May 12, 2010 | Car Amplifiers

2 Answers

Amp goes to protection mode. if the fuse is too small?

Disconnect all speaker connections and rca cables. Leave power, ground and remote wires intact. Try turning on again. If you still have a protection light your amp is faulty. . Double check all connections. Good luck.
A thumbs up would be greatly appreciated if this answer is helpful to you. Worth fixing.

Jul 15, 2010 | Autotek MM125.2 Car Amp

1 Answer

My A8000t amps red protection light is on checked

When ever the amp stays in RED protection mode with out any speakers hooked up to it, YOUR amp has internal damage some where. Can't tell you how much to fix, Could be cheap or not worth it. Talk to your local electronic repair, would be a good start.

May 14, 2010 | AudioBahn A8000T Car Audio Amplifier

1 Answer

Amp not working

I had a similar problem with a pyle amp. try to disconnect the speakers and turn it on if the protect light doesn't come on then you might have blown something in your amp and it needs to be repaired. For my situation it was a blown resistors and only 1 channel worked. If you don't have soldering experience then I wouldn't bother trying to fix yourself, an unsteady hand can ruin your repair.

Mar 26, 2010 | AudioBahn A8000T Car Audio Amplifier

1 Answer

I have an audiobahn A8000t amp with the protection light on

There are many different ways that an amp can fail but the two most common failures are shorted output transistors and blown power supply transistors (< those are not blown). There are several types of protection circuits in amplifiers. The most common are over-current and thermal. The over-current protection is supposed to protect the output transistors. Sometimes it doesn't work well enough to prevent the failure of the output transistors but it will work well enough to shut the supply down before the power supply FETs are destroyed. If the amp remains in protect mode, goes into protect mode or blows the fuse as soon as the remote voltage is applied, shorted output transistors are almost certainly the cause. If the fuse protecting the amp is too large, if the protection circuit doesn't respond quickly enough or if the power supply is poorly designed, the power supply transistors may fail. If you see a lot of black soot on the power supply transistors (near the power transformer), the power supply transistors have failed. Soot on the board doesn't necessarily mean the transistors have failed. Sometimes, technicians don't clean up the mess from a previous failure.
In general, when a transistor fails, it will either short (common for output AND power supply transistors) or open (common for power supply transistors). Transistors act like valves. They control the current flowing through a circuit. A shorted transistor acts like a valve that's stuck open (passing too much current). In the case of an output transistor, the shorted transistors tries to deliver the full rail voltage to the speaker output terminal. If you've ever seen a damaged amp that pushed or pulled the speaker cone to its limits when the amp powered up (common on some Rockford amplifiers), that was almost certainly due to a shorted output transistor. When checking transistors, you most commonly look for shorted connections inside the transistor. You do this by using a multimeter to look for low resistance connections between the transistor's terminals.
I used the terms short and open on the previous paragraph. A short (short circuit) is a path through which current flows that should not be there. An open (open circuit) is a break in the circuit.

Dec 30, 2008 | AudioBahn A8000T Car Audio Amplifier

1 Answer

Audiobahn a8000t problem

If the protect LED is lit, the amp probably has shortedoutput transistors. To eliminate other possible causes, read throughthe following page:

Amp in Protect Mode - Troubleshooting

Let me know if you have any other questions.

Nov 23, 2008 | AudioBahn A8000T Car Audio Amplifier

2 Answers

Amp has power, but nothing going to subs

did you check on the 'remote' terminal? It should have a +12 vdc to let the amp work. You can check this with a voltmeter. Or might be in 'protection mode' (speaker cut-off relay).
hope this helps

Oct 16, 2008 | AudioBahn A8000T Car Audio Amplifier

2 Answers

Amp in protection mode

Disconnect all speaker wires and signal cables from the amp. If it powers up normally (doesn't go into protection), the wiring needs to be checked. If it still shuts down, the amp likely has blown output transistors.

Nov 11, 2007 | AudioBahn A4401Q Car Audio Amplifier

1 Answer

Protection mode

Driver ICs or transistors,op-amps that create the idle bias circuit,the protection circuit, the power supply. You should have a schematic of this unit and know how to check the solid state devices for shorts. GOOD lUCK

Jul 31, 2006 | AudioBahn A8000T Car Audio Amplifier

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