Question about AudioBahn A2300HCT Car Audio Amplifier

1 Answer

AudioBahn A2300HCT no sound

Hi all the blue lights show up on the amp, however i do not have any sound coming from the amplifier. I was running a orion hcca sub of the amp on a low voume when i heard a crack sound and could smell some smoke, However none of the fuses popped. Does anybody know where i can get a schematic diagram from?

Posted by kabirparmar on

  • kabirparmar Sep 05, 2008

    Hi i am not an expert at electronics, however my dad does so i will ask him to have a look at it in more detail. I have taken the top casing of the amp off and i noticed some burn marks around the heat sink and on the little resistors on the board labled Q12p etc. Also i took of some of the clamps holding the components onto the heat sink and i noticed that 4/5 of them were heavily burnt. The components had the following writing on them: IRFZ48V and underneath that lable it said IDR432H, 10 C1.


  • kabirparmar Sep 09, 2008


    I was looking at the supply FETs on various websites and i am unsure as to which one i will require as they are quite hard to find. There are so many different voltage rated fets with the same model number. I have found a website with them however im unsure as to which one it is. Can you please tell me*IRFZ48*&Ntk=I18NBrandPartNumber&Nr=AND%28avl%3auk%2csearchDiscon_uk%3aN%29&Ntx=mode%2bmatchallpartial&N=4294955188&Nty=1&LanguageId=en



1 Answer


  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 631 Answers

Generally, if the amplifier smokes, the power supply FETs have failed.

Many times, the output transistors fail and that causes the power supply FETs to fail.

Audiobahn won't release schematics. The amplifiers are relatively simple and a schematic isn't generally required.

If you know how to check the transistors, check them to determine the severity of the damage. If you don't know how to check them, read through the following page following all links provided.

Basic Amplifier Repair

Let me know if you have any other questions.

Posted on Sep 05, 2008

  • Anonymous Sep 05, 2008

    Those are the power supply FETs. IRFZ48V is the part number. The circuit board designation 'Q' prefix tells you it's a transistor. The 'P' suffix means it's a power supply component.

    At the very least, you'll have to replace ALL 8 on the side with the burned transistors. If there are burned transistors on both sides, you must replace all 16 of them.

    You need to check the TIP35Cs and 36Cs to see if any are shorted. If any shows a short between the 2nd and 3rd legs, it (or one in parallel with it) is shorted. All that appear to be shorted in the board must be replaced (even though only one of the parallel group may be shorted).

  • Anonymous Sep 09, 2008

    Before replacing any parts, you MUST read and 'understand' the information in the yellow box on the basic repair site I posted. If you don't, you will almost certainly destroy the new components.

    The following is probably a better source.

    IRFZ48PBF - Farnell

    Did you check the output transistors yet?



Add Your Answer


Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

A2300HCT Car Audio Amplifier: i have a audiobahn a 2300 hct amp and it has stopp...

Well, sounds like you have an internal damage since it smokes, if it smokes as soon as it kicks on, and blowing the fuse right away, I would have it fixed. But my guess would be something with the ground that is making this happen, or some how your power is grounding on the amp. When ever smoke comes into play, thats never good any way at this point you gotta admitt that thiers internal damage.. blowing fuses can also be cause by over working your amp. along with the sub load at 1 ohm make sure your amp can do the same.. hope this was helpful in some way

May 16, 2010 | AudioBahn A2300HCT Car Audio Amplifier

1 Answer

Heeey. I have the Audiobahn A2300HCT and it has a very strange problem. When i start the amp its in the normal blue mode but i have no sound. The one power output (LEFT) indicator shows +3DB (full) the...

My brother just bought an A2300HCX and almost the same thing happen. 1 of the gauges (left side) was no movement. We tryed hooking the amp to the right side, and it works. The Left side turns out was shot, had to get it fixed. So sorry to tell you but sounds like one of the channels has internal damage. I know this isn't the good new you were wanting to hear, but hope it was helpful

Apr 08, 2010 | AudioBahn A2300HCT Car Audio Amplifier

1 Answer

Audiobahn 2300hct red led light comes on when engine revs up at idle amp goes blue and works fine. volts are running at 13.5 to 14.0 when reved and 12.4 at idle. what going on? amp worked fine when car was...

this is happening simply because your ground wire is either going bad, or it has a bad connection to your vehicle. check the spot where your ground wire connects to your car, and look for corrosion or a change of color in the wire. if you find anything like this, i would recommend replacing your entire ground wire. if the wire looks fine, just tighten your connection point, or move it all together.

Jun 06, 2009 | AudioBahn A2300HCT Car Audio Amplifier

1 Answer



Audiobahn's website has apparently been shut down and it's my understanding that they are no longer manufacturing any new products. And not supporting the old ones, online anyway.

But I did find this site that sold the A2300HCT and still have the specifications listed. The 3rd from the bottom in the description shows "1/0- or 2-gauge power and ground leads recommended".

At the very least, you should consider running 1/0 or 2-gauge from the battery to a distribution block and then run a very short jumper from the distribution block to the amp.

May 05, 2009 | AudioBahn A2300HCT Car Audio Amplifier

1 Answer

Red light comes on but amp still tries to kick.

Try removing the caps out of the system. It sounds like they have gone out. What is happening is the caps start storing up the power like they are supposed to do but then they are being discharged as soon as they are full. Bypass the caps and that should correct your problem.

Mar 14, 2009 | AudioBahn A2300HCT Car Audio Amplifier

1 Answer

Audiobahn a2300hct

check rca, faulty ground does that

Sep 02, 2008 | AudioBahn A2300HCT Car Audio Amplifier

1 Answer

Wierd stopped working audiobahn a2300hct

Disconnect all speaker wires from the speaker terminals of the amp and disconnect signal cables from the amp. If it powers up normally, the wiring and speakers need to be checked. If it still shuts down, the amp likely has blown output transistors.

Apr 05, 2008 | AudioBahn A2300HCT Car Audio Amplifier

3 Answers

AUDIOBAHN a2300hct problems

This indicates a possibility of a power supply issue, you may have to open up the unit and take voltage measurements to determine if the voltages are correct. In order to do this you will need a schematic diagram of the unit. Once you have the schematic you will be abor to tell which voltages are legitimate. I hope this helps

Sep 15, 2007 | AudioBahn A2300HCT Car Audio Amplifier

1 Answer

A2300hct no aound

are there power to the output transistors?

Aug 06, 2007 | AudioBahn A2300HCT Car Audio Amplifier

1 Answer

Audiobahn A2300HCt wont work

you might not have enough power pushing the amp.... I have two batteries and two caps running

Apr 02, 2007 | AudioBahn A2300HCT Car Audio Amplifier

Not finding what you are looking for?
AudioBahn A2300HCT Car Audio Amplifier Logo

415 people viewed this question

Ask a Question

Usually answered in minutes!

Top AudioBahn Car Audio & Video Experts

Alphanso Tee

Level 2 Expert

169 Answers

xxxxxx xxx

Level 3 Expert

5023 Answers

Andrew Taylor
Andrew Taylor

Level 3 Expert

34974 Answers

Are you an AudioBahn Car Audio and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides