Hi guys. I am new to the DIY Headphone stuff. I have made diy aux cables and such, so I am familiar with the process, but this cable seems to have some odd connectors. I believe it is a 2.5mm locking connector that plugs into the headphones themselves, and a standard 3.5mm audio plug on the...

Ok. Well it turns out that I was using a 100k resistor for R3, instead of the 1k. Anyways, I got that taken care of. Well my amp picks up a lot of noise when I am by my computer, is that normal? I was planning on using this on my computer at work and i would like to find a way to get rid of it...

Thanks guys, I really appreciate your help. I will run another 9v in series when I get home from work. I will double check my resistors also. There is a way to check them without desoldering them right? I am fairly certain that I have all the resistors correct though, I tried to resistance match...

ok well after going over tangents diagram again. It turns out that I had the opamp power wires wired from the top row instead of the second row. Well it doesnt do the horrible distortion anymore, but it does start distorting when i turn the volume up a bit on my source. Its getting late so I...

Quote: Originally Posted by Sinbios No, measure from output ground to output left and output right Well according to tangents layout, the output ground is the virtual ground. Here is some pics of my board, and the tangent layout so you can see what i mean about where i am...

OK, I will post a pic in a few minutes. I am using a single 9 volt at the moment. I was using a pot but I have desoldered it from the amp, as well as all the jacks.The opamp is the opa2132pa. I rechecked to offset, and set the DMM to mVolts and it read at .5 mvolt on the left and .9 on the...

I hear enough to where it starts soundeing distorted. For the offset, I am supposed to connect left input to ground and measure the left offset, and same for the right channel?

Okay, this is my first attempt at an amp, and this is starting to get frustrating. I have looked over all my solder connections, and I didnt see any bridges or anything. Anyways, on to the problem. When I try to listen to either left or right channels individualy I can still hear sound from the...