Question about Alphasonik (PMA640A) Car Audio Amplifier

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Pics of internals on a working alphasonik 1200da needed. (very large pics)

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I have photos but can't send all of them. What area do you need to see?

babin_perry@yahoo.com

Posted on Jul 23, 2009

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Posted on Jan 02, 2017

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Alphasonik 12 inch series 800 is not working. I'm not sure what's wrong with it


Have you tried to hook up another sub (spk) to the amp? Or just wire it to a stereo to see if it works? single voice coil or dual?

Aug 15, 2016 | Alphasonik Car Audio & Video

1 Answer

I would like to know if I need a special plug to bridge the amp and were can I buy the owner manual


I just got an alphasonik pma800da today, it came with the cord you are talking about. Looks like a phone cord, its to hook up 2 of these amps together. I also have the book to the amp

Dec 26, 2010 | Alphasonik PMA800DA Car Audio Amplifier

1 Answer

Which speker box should i use for alphasonik


If it is an open air sub ( hole with mesh in the center of the magnet) no ports are required, and the box should be sealed on the inside with silicone sealant. If it is a closed air sub ( no hole in the magnet) you need a 50mm port about 120mm long Box size will be 13 inches x 13 inches x 13 inches

Mar 15, 2010 | Alphasonik Mayhem PSW912 Car Subwoofer

1 Answer

I have an alphasonik pma600hca everytime i power it up it goes into protect rite away???? Any ideas???


yes you have a internal fault of the amp. the circuit that puts it into safe mode is bad and that is a very small chip on the board know as a op amp. needs to be repaired.

Jan 21, 2010 | Alphasonik PMA600HCA Car Audio Amplifier

2 Answers

Can't load more pics to internal memory,past about 100 photos


Your jpg files(pics) may be too large.
reduce them (i use 800x600.)
Irfanview is a good resize pgm(free)

fred

Dec 11, 2009 | PANDIGITAL (DPF802) Digital Picture Frame

1 Answer

Alphasonik amp is getting power but no power to subs


either your rca inputs are bad or your mosfets are bad

Jul 05, 2009 | Alphasonik PMA1000D Car Audio Amplifier

1 Answer

I need to know the enclosure specs for the PSW615 alphasonik subwoofer... need volume for vented enclosure


Hello chetdyal,

For a ported enclosure with room for a port, you're going to need a box with about 3.0 CuFt internal volume. Using 3/4" material and outside dimensions, this translates into a box 25"(w)X18"(h)X15"(d) giving you 3.03 CuFt allowing a little volume for the sub and port displacement. For a tuned frequency of 38Hz, you'll need a rectangular port 2"X6" and 4.6" in length. A round or cylindrical port for the same tuning frequency would be 4" in diameter and 4.9" in length. Increasing the port length will lower the tuned frequency.

There's excellent volume and port calculators on The12v.com web site. I'd recommend that you browse some of the "box-building" information before you begin your build. The DIY Subwoofer site also has some great resources.

Keep in mind that a ported enclosure will tend to produce the loudest bass notes very close to the tuned frequency. So tune it higher or lower according to the music you will be playing.

Hope this helps.

Jun 08, 2009 | Alphasonik PSW615 Car Subwoofer

1 Answer

White in all pics


The pictures are either over exposed or there is a large smudge on one of the internal lens elements. A bad image sensor is also possible.

Jan 15, 2009 | Sony Cyber-Shot DSC-T1 Digital Camera

1 Answer

Internal memory full!


Hi,
    The internal memory for taking number of snpas depends on that on which Mega Pixal you are using. Hope that intentally or un-intentally you had change Mega Pixal from low to high, that's why the number of pics in internal memory reduces. Just keep your camera snaps mode (Where you take pics) then press junk or dustbin button and you can change the Mega Pixal quality as you want. Higher MP gain more memory and give less number of pics but with high resolution and lower MP gives large numer of pics with low resolution.
Hope you will under stand my sayings.
Thanks for using FIXYA!
Take care

Aug 01, 2008 | Sony Cyber-Shot DSC-S90 Digital Camera

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