Question about AudioBahn A2150HCT Car Audio Amplifier

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Hi ya, due to my stupidity i managed to connect

Hi ya due to my stupidity i managed to connect the positive and negative the wrong way round on my a2150hct amp this blew all 3 25amp fuses in the amp ive replaced these and the amp now turns on fine the status light on the amp is solid blue when on however i dont seem to b gettin nowhere near as much power out of it as i was my sub now hardly thumps at all :( the bass boost contol knob lights up solid blue when turned down to minimum but if i try and turn it up changes to solid red and no diffence in sound!!!! any advice would be very much apreciated as im missin my sub!!

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  • AudioBahn Master
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Obviously you damaged more than just the fuses when you did the deed. Check out your power supply and amplifier output stages for damage(s).

Posted on Apr 24, 2017

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Posted on Jan 02, 2017

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SOURCE: hi ya, due to my stupidity i managed to connect

There could be any number of things wrong with your amp. Normally there are diodes that protect against this sort if thing however applying reverse polarity on capacitors, regulators and FETs can cause untold damage. You will need to trouble shoot the amp by measuring voltages around the power supply.

Posted on Mar 22, 2010

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1 Answer

Hi ya, due to my stupidity i managed to connect the positive and negative the wrong way round on my a2150hct amp, this blew all 3 25amp fuses in the amp, ive replaced these and the amp now turns on fine...


There could be any number of things wrong with your amp. Normally there are diodes that protect against this sort if thing however applying reverse polarity on capacitors, regulators and FETs can cause untold damage. You will need to trouble shoot the amp by measuring voltages around the power supply.

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1 Answer

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Hi elepant,

I haven't seen a 202, but if it's the same as the later 45 series, then looking into the bottom of the flash, the top pin at the round end is positive, the left one half way down is the negative for 7.2V NiCDs and the bottom right one, lowest down in the square corner, is the negative for 9V alkaline batteries. I've used NiCds and NIMH batteries with no problems,connected to the alkaline pins, it's just a tapping on the power supply transformer to compensate for the NiCDs having a lower voltage. There's also a 0.2 ohm resistor inside some of the Metz 45 models, in series with the NiCd negative line, probably to limit the initial current. I've had no problems at all over 24 years, with using NICds or NIMH on the alkaline connections, in an alkaline battery holder.

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1 Answer

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Hi

Sounds like you got the battery terminals wrong ?

If you have the post type round terminal type.

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If battery its bolt type connections look for the + or --- stamped on battery.
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Good Luck !

Let me know what has been the outcome ?

A FixYa rating would be nice thanks !

John

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2 Answers

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hope this advice helps.

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