Question about Alphasonik PMA1000D Car Audio Amplifier

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Alphasonik amp is getting power but no power to subs

My alphasonik pma1000d amp is getting power but no power to subs. Bass just cut out and never cut back on

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Either your rca inputs are bad or your mosfets are bad

Posted on Jul 05, 2009

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Posted on Jan 02, 2017

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1 Answer

Should I use a vented box or a non vented box for my ALpha PSW412


Well, First you need to figure out a few things. How much room you have is one main consideration, If you go with a vented (ported) enclosure or band pass (see below) than you will need more room than with a seal enclosure, If you really have no room you can mount them " Free Air" which is mounted on a board and fired into the back seats, the Truck acts as the enclosure.
Now the type of bass you want is another consideration. The best enclosure for maximum bass is a bandpass box. It is 2 subs facing each other with one side fully enclosed and the other side ported. This is best for deep powerful bass but the enclosure can be rather large. Vented boxes are second best (In my opinion) they give you deeper bass and more power than the sealed boxes. Sealed boxes give you less power from your sub and are a little flatter. Some say that the bass is more accurate and tighter , depending on the type of music you play. Rock you would want a tighter bass(sealed) and hip hop or techno style you would want a deep bass(ported). Lastly you have the free air which gives you the least amount of bass and is usually rather flat sounding. If you have the room go for the band pass box, if room is an issue than go with a sealed and specifically design box for you vehicle. Alot of places design boxes for almost every car out there. Just make sure that have a well designed box, It makes a world of difference, than an improper box.

May 22, 2010 | Alphasonik PSW412 Car Subwoofer

1 Answer

Turned on radio amp started smoking on the side where the bass boost goes still got power on amp and voltage meter still works but bass boost does not work thats where the smoke came from


i would get it looked at, you never know. when ever your stuff starts to smoke it might work for a lil while but sooner or later my opoin it will be just junk.

Apr 23, 2010 | Alphasonik PMA800DA Car Audio Amplifier

1 Answer

When power is applied, one sub hits fine and the other looks like its being pushed out really hard, continuously.


sounds like the amp is sending dc voltage to the sub. you probably have bad output transistors in the amp.

Mar 09, 2010 | Alphasonik PSW410 Car Subwoofer

2 Answers

Amp cutting out when bass hits


With an amp like that you can not pull enough power from you cars battery alone. That is why when it hits hard it drains the amps from your battery and you amplifier cuts out. The light on the amplifier most likely dims when the bass hits. You need to get a capacitor. They are easy to hook up on the main power wire. You can get one from http://phatcaraudio.com/capacitors.html or get a used one off ebay.com. Good luck

Jul 01, 2009 | Alphasonik PMA1000D Car Audio Amplifier

1 Answer

Is the ALPHASONIK PBAT10 bass tube a good product


If your limited with space they will do just fine if your looking for really stong bass don't look at bass tubes get a sub enclosure look at the lanzar opti 1232d I have to of these and they are sick go to this site and check it out http://www.lanzar.com/itempage.asp?MODEL=OPTI1232D

Jun 10, 2009 | Alphasonik PBAT10 Car Speaker

1 Answer

Need help


u should connect at least six 12" subwoofers (preferably 1000W each) to that pioneer amp of yours. Crank it up and enjoy. Your amp shouldn't cut off now. If it does cut off, you should change the fuse on your amp to a higher ampere.

Oct 30, 2007 | Pioneer GM-7200M Car Audio Amplifier

2 Answers

Amp cuts off


You may have a problem with the power source feeding the amp. You need to check the voltage across the amplifier's B+ and ground terminals when the amp is playing/cutting off. If it's dropping below ~11 volts, you need to determine why it's dropping so low.

Sep 18, 2007 | Alpine PDX-1.1000 1000W x 1 Car Amplifier...

2 Answers

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.

Aug 04, 2007 | Alphasonik PMA600HC Car Audio Amplifier

6 Answers

Speakers cut off when bass goes up...


it might be that your wires from your amp to your subs are too thin. since they were relatively new the first three months, they were probably undamaged, but after pushing them too much, they probably have broken wires, and can't get enough power to the subs when turned up, i suggest getting thicker wires before investing in a capacitor, it could save you money.

Mar 21, 2007 | Sony Xplod 1100 Watt Max 10" Subwoofer,...

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