Question about Alphasonik PMA600HC Car Audio Amplifier

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Clipping amp

Driving home the other day and I smelt something burning then my bass went. The amp cuts on but now when I turn the volume up the amp cuts out and proceeds to clip. The power ligh start to blink.

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Re: clipping amp - Alphasonik PMA600HC Car Audio Amplifier Car Amplifiers


Posted on May 24, 2008

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Re: clipping amp

Hi first disconnect all spks, then turn on the amp. if amp power lite stays on bright then proceed to connect one speaker or sub to the amp. if the amp lite dims during any spk connections then it may be that the spk is faulty or there is a DC voltage (dc offset) emitting thru that particular channel. also check all spk impedance before reconnecting them to the amp. cheers.

Posted on Aug 05, 2007

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1 Answer

My DB Drive pd 1200.1 amp shuts off when the volume is raised. What is happening and what should I do?

The vibration from the bass is cutting off the amp. it is a loose wire causing this issue. you can also get a stabilizer that will stop the vibrations from causing this issue.

Feb 27, 2013 | DB Drive Platinum PD1200 Car Audio...

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Bass cut off when volume is too high

When an amplifier shuts the Bass off that means its going into protection mode otherwise it will burn out the outputs. One way is to turn your gains down, Pioneer amps are not the best amps for bass out there, they are more for car speakers, I personally wont use a pioneer amp to run my subwoofers especially if they are hard driven subs like JL , Kicker Solo's and MTX subs. But for now just turn the gains down to 3/4 and that should help u, you can also install a fan to keep your amp cooler, if this never happened before in 5 yrs and now it does then that means your amp is just tired and the inside components are overheating easily, thats common with Pioneer and Sony amps.

Good luck buddy.


Jun 12, 2010 | Pioneer Car Amplifier GM-5100T - 2CH 760...

2 Answers

When i cut the volume up on my radio or turn the bass up the amp cuts off and on

check all wires .... make sure your speaker wires arent in the wrong order or shorting ...

did this just start of was it always going on ... if it just started its probly a short in the wires

Feb 10, 2010 | Rockford Fosgate Punch P5002 Car Audio...

1 Answer

I recently had my car broken into and someone tried to steal my system. Thankfully my fiance heard and went out in time and they drove away. They had disconnected some of my wires and we tried to put them...

wire from battery(normally red) to 12v+, really skinny wire(normally blue) to remote, black or silver wire from ground to grnd. No you dont need the converter as long as you have your rca from asftermarket cd player to your amp(preferred way). You might have also bridged your amp with your speaker wires which would cause your system to run on a different ohm which would cause the bass to get louder then overheat you amp which would turn it off.

Aug 16, 2009 | Rockford Fosgate Car Amplifiers

2 Answers

Why does my KAC-8404 cut off at high volume bass?

amp 101

1/0 wire to the amp or the amps will loose power

check the connections mainly the negative

wiggle the wires see if you get a cut out or not

a cap will help you give constant power to the amp and not allow them to drain on long bass notes

hope this helps

Dec 26, 2008 | Alpine PDX-1.1000 1000W x 1 Car Amplifier...

1 Answer

Amp went into protect, but front speakers sound distorted too

If the amp still goes into protect mode, the easiest thing to do is disconnect the RCA cables from the amp and see if still goes into protect mode (after turning off/on). If it does, the issue lies in the amp or the wiring to/from the amp (most likely case). Check to make sure no speaker wires came loose and touched +12V or ground (car body). From the sound of it, my guess is something internal to the amp died and will need repair.

Mar 22, 2008 | Car Amplifiers

1 Answer

Alpine mrp-m650 amp cutting out

Some AMPs have a thermal cutout, that switches the amp off if it gets too HOT.

But this sounds like your amp or sub is screwed, either there is to much resistance in your sub, eg: Burnt voice coil, carbon builds up on the coil stopping the sub from moving freely. Push on the cone of the sub & listen for a scrapeing sound.
or test this by continuity testing the sub terminals & pushing the cone if the BUZZER on the MultiMeter cuts in & out as you push & release then your sub is screwed. ( a certain amount of repeatative pushing it may free up the voice coil.)

or your Amp may have blown a internal fault that will have to be sent of for repair.

Or you have a incorrectly rated fuse for your system,

or the battery cant kope with the power surges???

Dec 19, 2007 | Alpine MRP-M650 Car Audio Amplifier

1 Answer

Crate BT50 Bass amp cutting out with high input.

Sometimes an amplifier's preamp can't handle certain signals/frequencies at a high gain, so they cut out. Bass guitars are especially prone to giving such a strong signal.
I bought an older, nonworking bass amp recently and fixed it just to find it had the same problem. Best solution is to put a low ohm resistor at the amps input, but if you turn your guitar down to half volume it'll have the same effect: should prevent it from cutting out.

Nov 01, 2007 | Crate SPA1600 Power Amplifier - SPA Series...

3 Answers

Amp stopped working...

Has the amp been overheating lately? It's quite possible that the amp could have just blown. Smell around the outside of the amp for an electrical burnt smell. If available, see if a friend also has an amp hookup and try removing your amp and copnnecting to the friend's cables. That will tell you if it's a wiring problem or an amp problem.

Sep 13, 2006 | Kenwood KAC-9152D Car Audio Amplifier

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