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Question about wiring a 9 pin input for a computer sub (serial port??)

So I got this small computer sub-woofer. It's an Altec Lansing BX1121 or something like that. It has a 9 pin input that it receives sound from the right speaker with. I have a set of small computer speakers (also A.L.) and was wondering if there was a way to solder the wires from one of the speakers (or an 1/8" cable) to the input of the sub... I opened the sub up to see if the +/- were in any way obvious, which of course they weren't. The crossover / power supply is a small pc board with the 9 pinner just kind of gunked on there. I would have to solder directly to the board. Is this 9 pin input called a 'serial port'? I'm not very smart about computers, but I'm a soldering champ and pretty keen on modifying stuff... Any advice on how to make this work??

-Ian

Reply to
CreamyDistortion
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Reply to
MC

I would guess that the 9 pin port going to the right speaker has the control lines for power and volume on it. Most of the time the right speaker has those controls for the speaker setup.

Just because it's a 9 pin d-sub connector, doesn't mean it's a serial port.

- Tim -

Reply to
Tim

I don't beleive it is. I just think the design needed a neat connector to carry a number of wires and the 9 Way D was a cheap and simple solution.

I imagine that the audio output from the PC (or other music device) and the power goes into the sub. It contains the PSU, crossover, amp etc and feeds the two two speakers via the 9 Way D.

So it probably only uses 4 pins (signal and ground for each speaker).

My guess is that they use a 9 Way because there is another model that has rear speakers aswell (8 pins needed).

What I don't understand is what the OP is trying to do. Is he trying to replace the speakers or add additional ones?

Cheers,

Nigel

Reply to
Nigel Heather

Hey man, Sorry about the confusion. It's a mini DIN. Not a serial at all... The Sub has it's own power cable and I'm assuming it takes a mono signal, right? It only has one speaker. Basically, I have a set of computer speakers with no sub send, I would like to send 2 wires with the mono hot/ground into the sub to make it work without getting speakers with the connector. I can't imagine it wouldn't work. Basically it would be nice to know which pins on the female mini DIN are the right ones for input. Either that or I'll just have to trial and error it... For some reason there are no schematics online for this sub.

Reply to
CreamyDistortion

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