I need your help with a computer speaker amp
Hey guys, I need your help with troubleshooting a problem that I have with a pair of amped speakers that I purchased at a yard sale ($1.00!).
They are Koss SX50 computer speakers, and when I turn the switch to turn the amp on; everything goes dead. There are two speakers; each powered by 2 C-Cell batteries. This is how they were powered when they were in their Koss enclosure. I disassembled them to get rid of the ugly case.
Now, this morning instead of using a coin cell, I connected two C-cells to the speakers. This gave a little bit of sound to the left speaker. However, as soon as I hit the amp switch to on - all the sound turned off.
Here is a link to my gallery of photos of the circuit - I do not have in the picture the second speaker with the other 3V source: http://img132.imageshack.us/gal.php?g=img2265c.jpg
In the picture you will see the two-female jacks that connect to the other speaker.
I tested each speaker with the batteries hooked up and I don't get any reading of voltage. This is with the amp turned on and off.