Thread: Here's What I Just Made

Kind of what I was wondering too, what voltage level / rpm indicates knocking

recording was a bust, the amplifier overloads the laptop's mic input and it's distortion city. I'll have to try another method

Try running it through high or low pass filter. I'm sure there is a frequency in there that you can use. Actually a band-pass filter would work well.

sorry been chasing down a vacuum leak, and now battery and oil pressure issue. Will get to the recording after I get the car sorted.

what kind of mic are you using?

Mic was what came with the personal amplifier device. Just de-soldered and lengthened. Btw turns out the cord I was using to connect to the laptop has a partial break in it. Probably what was causing the audio issues when i was trying to record.

IMO you should try using a cat 5 or cat 6 ethernet cable for mic , should get less noise in the wires

Better shielding than audio cable?

yeah the twisting helps

This looks promising, wish there were wiring instructions for it...

http://www.amazon.com/Velleman-K1803-Microphone-Preamp-Kit/dp/B0002Z82XU/ref=sr_1_621?s=electronics&ie=UTF8&qid=1420593800&sr=1-621&keywords=microphone+amplifier