I'm looking for input and output cable for amp's internal cabling. I don't want to spend horible sum for cable but I'm a bit concerned about capacitance of my el cheapo cable I'm using right now.   I have diy module for digital multimeter and I meassured between hot and shielding:   15cm...

I received AKG K242 HD headphones today and when I dissasembled them I was in shock because I expected different driver.   Looks like there is absolutely the same driver as in K530 Ltd. I don't know how they will sound because they need need burn-in. I wanted to give K530 to my mom so I...

I came across this double channel oscilloscope:   http://www.zeitnitz.de/Christian/scope_en   You only need some high impedance buffer - fet or opamp and connect it to line-in on your soundcard. It has some limitation due your soundcard quality, but it's very good for checking operation...

I found this schematic and it looks interesting like Sigma11 by AMB. But it doesn't need that hard to find current regulator diodes. What's more, it can be simplified and you can leave out short-circuit protection if you wish.   Here's a link, but I don't know who the author was...

I built soft start and dc protection circuit with relay and have thump when powering on and off.   It's not a circuit issue because I disconnected input of this circuit and fed only output signal through relay. I tried large resistor between contacts but no change. I'm confused.   Relay...

Hi.   I have a strange problem with my volume potentiometer on my headamp. I have used this amp for 2,5 years now but volume potentiometer drives me crazy.   When I turn on my headamp and turn up volume it makes cracking sound. This sound lasts for about one second when I drive it with...