Question about Alphasonik PMA1000D Car Audio Amplifier

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Amp cutting out when bass hits

I have a alphasonik pma1000d amp hooked up to 2 splw-12 subs running at 1 ohm as recomended when the bass hits heavy it cuts out ive tried hooking them up one at a time and it still does it gains down boost down doesnt matter specs on amp says 2060 watts at 1 ohm rms subs are 1100 rms at 1 ohm ive even moved the ground 3 times and still doesnt help plus i have a 6.0 farad hooked up disconnected it to see if that helped but all problems still exist

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Make sure that all the connections to the power supply are tight. The protection circuit is doing this so that your amp do not burn up. The size of your amp also demand heavy wiring. Make sure you used the recommended size. Also you need to make sure that the battery and the alternator can keep up with its large demand. You may need an extra battery too. I know a single battery can deliver a lot of current, but a powerfull amp demands the current really fast, when the bass hits. You can use a large damping capacitor, they are extremely big, or you can add another battery. All these will also give your amp more thump, and make it operate at full efficiency. meaning even louder! If these do not solve the cutting out issue, you may have to turn down the gain down slightly. Every type of music do not deliver same amount of bass, hip hop music, and rap would require you to trim down the gain some. Bass is delivered at its best in moderation, too much and you end up with a rattle rather than solid bass. I have a 4,000 watts amp at home, I don't use it in my car. I got it rigged up as a house stereo. I bought it for a 100 bucks broken, and fixed it. I have worked with hundreds of car amps a before in a electronic shops, I also design small amps once in a while. I myself love those loud gadgets. Well hope it has been helfull. Goodluck.

Posted on Jul 01, 2009

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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

Posted on Jul 01, 2009

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Posted on Jan 02, 2017

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What is the best way to wire two kicker comp r 12' s to a two channel amp for max bass?


First, you need to know whether you have the 2 ohm DVC subs or 4 ohm DVC subs. Second, you need to know the minimum impedance the amp can handle (most are 2 ohm, some are less). Putting two voice coils in parallel will cut the total impedance in half (e.g. 2x 4 ohm voice coils in parallel = 2 ohms total). Putting subs in parallel will also cut the impedance in half.
At one end of the spectrum, you could put the 2 ohms DVCs in parallel, then parallel the two subs, and bridge the 2 channels of the amp. That would put 0.5 ohms impedance on the 1 bridge amp channel. If the amp can do 0.5 ohms x 1ch, do it. Otherwise, you may have to run the subs on separate channels.

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Your PSW815 has 2 ohm dual voice coils allowing you to better match the impedance to your amp. Each voice coil is 2 ohms. If you wire them in parallel (both +'s together and both -'s together and then to the amp terminals), the sub presents a 1 ohm load which is too low for most amps. Wiring the voice coils in series (one + to the other - and the remaining + and - to the amp terminals) results in a 4 ohm load.

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Bridge it. Should be marked on amp. According to specs should get u the power u need. Amp max 1500 watts. at 2 ohms. Speaker max is 2200 watts at 4 ohms. Turn amp down and adjust to your own taste. trust your ear man.

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probably the amp going to safe or protect mode judging by the fact that you have 3 subs wired to it i would say it is not 1 ohm stable try disconnecting 1 sub and see if it still happens this will be running a 2 ohm load rather than 1 if it stops happening then you need to figure out a better wiring configuration that will work with your amp.

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Ok, I have a pair of infinity dual voice coil 12" subs, and a pair of audiobahn quad voice coil 12" subs. Boths sets of speakers can handle 450w. Which set of 12's would be best to hook up to this amp, and...


i recomend you just use the best single woofer in a well built box and that will give you better sound at lower gain volumes it sounds like you have too much junk laying around but to get good bass run your sub at 2 ohms if the amp is stable at that impedence

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Best results


huge shared common space slot loaded box (size depends on sub 10", 12" 15" you need to clarify that please) the amp specs on earthquakes site say the phd5000 is rated at a max output of 5k watts at 1 ohm 3k watts at 2 ohm so, with 3 dvc 2 ohm subs you only have 3 options of which only 2 will be a usable solution:

1. 3- 2ohm dvc series at sub parralel at amp = about 1.33 ohms at the amplifier this is the best option to get the most power to the subs as each sub will produce a 4 ohm load then wire each one to the amp the amp sees 3 4 ohm parralel loads which = 1.33 ohm so based on the amp specs you would be close to 1200 watts per sub.

2. 3- 2ohm dvc wired in series at sub and all 3 subs series wired together very difficult to wireand will give you a 12 ohm load which is next to no power at all (not a viable solution)

3. 2- 2ohm dvc parralel wired to each other and then at amp the amp sees a 1 ohm load and makes 5k watts max but you can only (REREAD THAT LINE! ONLY USE 2 SUBS IN THIS WAY) WHICH GIVES THE MOST POWER BUT ONLY USES 2 SUBS

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Again as I have stated in my other answer to you. You can not wire two SVC 2 ohm subs to acheive a 2 ohm load. more than likely you are running your amp at 1 ohm mono and this is why it is clipping and shutting off.

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