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Question about Altec Lansing ADA425 3-piece 30-watt Speaker Set Computer Speakers

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Need wiring and 9pin connector diagram

For Altec lansing model A425 satelite speakers and sub woofer 9 pin connector wiring diagram. My plug from the satellite speakers to the subwoofer is broken, need pin order for the 9 pin plug. email: [email protected] Thank you

Posted by cmpman on

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  • Anonymous Mar 13, 2009

    Same problem. It is a db9 connector.

  • harshit Jul 04, 2013

    where i get 9 pin wire plug in gurgaon?

  • harshit Jul 04, 2013

    yaa

  • harshit Jul 04, 2013

    tell me how to solve it?

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2 Answers

Anonymous

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Dell (Altec Lansing) A425 Subwoofer Pinouts

This is a standard female DB-9 serial port.
Here are the pinouts.

Pin 1 = Left Speaker Out +

Pin 2 = Left Speaker Out - (Common Ground)

Pin 3 = Left Line In +

Pin 4 = Right Line In +

Pin 5 = Left/Right line In - (Common Ground)

Pin 6 = Right Speaker Out +

Pin 7 = Right Speaker Out - (Common Ground)

Pin 8 = Power A

Pin 9 = Power B

Jumper (short) Power A to B to turn on.
If you want a volume control you need to put one on the inputs. You will buy buy a stereo volume control or potentiometer.
Here is some info on how to do this.
http://g4tv.com/screensavers/features/43665/Pump-Up-The-Volume.html

Cheers!

Posted on Mar 24, 2009

  • jerz4ever38
    jerz4ever38 Mar 02, 2013

    What should I do if I want the subwoofer only? I want to discard the 2 satellite stereo speakers, but want to be able to use the subwoofer by itself with the volume knob. Do you have any suggestions? Thanks.

  • unborked
    unborked Apr 27, 2022

    hope someone is still behind this comment.
    i'm not an electrical engineer so this "pinout" is meaningless. All we want to do is hook up this subwoofer to a home stereo's "subwoofer" speaker wire hole with speaker wire.
    We're looking at the back of the orange female vga connector. Which pin is #1? do the numbers circle back or go left to right or right to left?
    Is it safe to assume that pin 3 and 4 (but i can't tell which pinholes are 3 and 4 because they're not just labelled) - Left and Right positive in must both attach to the one positive on the speaker wire from the stereo?
    Then where does the negative wire (from the black attachment hole on the back of the stereo) attach to the pinholes? does it go to pin 5? which pin is pin 5? top row? 5 from the right or 5 from the left? And are the numbers from looking at the back of the speaker? or looking out at the connector from inside the speaker? it's all arbitrary.

    Is there anything else you have us do with the power?
    I just want this thing to work like a normal speaker that does what the stereo's "subwoofer" speaker wire tells it to do.

    Do you really have to jump holes 8 and 9? is that going to start a fire? Do we plug this thing into the wall? will the jumper wire between pinholes 8 and 9 shock someone if they touch it?

    I'm just trying to get this explained for someone who doesn't know anything about pin-outs. That said, I've installed car stereos where I had to find each wire for new harnesses and it was a pain, but this should be morer simpler. thanks lol

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Ca i get a main chip(IC) number

Posted on Jun 11, 2012

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I was in the same situation. Got a subwoofer from VS4121 without original satellite speakers. I acquired satellite speakers from Altec Lansing 251 which used same connectors but the internal wiring was different and incompatible. Speakers are also glued together so it is impossible to open without damaging it. Obviously there is no service documentation anywhere..
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