I recently made a 2 stage audio amp and use it as an EMG. But recently my output wire isn't working anymore. I tried to repair but im stumped. I went a bought a Mini-Audio Amp speaker from radioshack https://www.radioshack.com/product/index.jsp?productId=2062620 . I have two 2n4401 NPN's connected together, I just need to figure out a way to have my output on my perfboard feed into the Mini Amp Speaker. If someone could give me a step by step that'd be great. I tried a 3-conductor 1/8' wire and tried stripping it and then soldering on speaker wire and hooking the speaker wire into my perfboard, but nothing seems to work. Any thing would be helpful. Thanks