I'm building some amplifiers as gifts for friends but ran into a problem.  The cases I bought have aluminum front and rear panels and I was planning on having both the 3.5mm input jack and the DC jack on one end.  The DC jacks I bought are all metal which, due to my lack of foresight, ties the...

I'm thinking of building a pimeta-esque amp.  I'm going to have LMH6321 buffered OPA627s for the left and right channels.  However, for the ground driver, I'm thinking of using the TI's suggest pseudo-ground instead of a 3rd channel.  This is an attempt to build the amp using a "star" topology...

Hi, I was perusing digikey for polypropylene capacitors and saw these. Data sheet Would something like this make a good input cap?   Quote:   Or would something like this be better? Or at this point, would it be better to leave it out?   Thanks in advanced.

Hey guys, I'm planning to build a new desktop amp and I got two quick questions.   1. Since I can control the volume on my PC/phone, is there really any point in putting a potentiometer in the amp?  I know a big issue for amps is the quality of the potentiometer, so not having one would be...

Basically using all of Tangent's recommended parts, took out C5. R1 = 100.  R2 = 1.5K.  VSET = 500. Right now I plan on feeding it 24V from a wall wart that is already linear regulated, but it still has more noise than I'd like at higher volumes.  Will I still be able to get 24V out?  ...

So I'm thinking about making another cmoy amp, but this time I want to buffer the ground channel using tangent's design: For this configuration, would this VFB opamp work with this buffer?  I know that the buffer is supposed to be faster than the opamp, but am I missing another spec?  And...

Hi, this is a very simple, free mod that will very noticeably  increase the amount of bass, increase bass extension, and give an overall warmer presentation on the Ultrasone HFI-780s.  I'm using a set with over 200 hours on them easy.   I shouldn't have to say this, but doing this mod voids...

Does anyone happen to know the difference between S-Logic and S-Logic plus?  As far as I know, S-Logic Plus was introduced some time in 2008 to replace S-Logic.  I haven't seen much coverage (pics or otherwise) of Ultrasones here, so searching turned up nothing.   Here is a pic of the post...

I don't know if this has been posted yet or if this is the right section, if not, please move it or let me know.   Whether or not this is your cup of tea, you can't beat a free download.   Immediate download of 14-track album in your choice of 320k mp3, FLAC, or just about any other...

Hey guys, what size heat shrink wrap do yall buy and where do yall buy it from? I want to buy some to reinforce the area where the cable goes into an IEM.

They're both $80 and supposedly sound good. I'm kinda leaning towards the ck7 because they're made of titanium . What I'm looking for is a warm sound with a tubby lower end and clear (but not shrill) highs. They need to be able to stay in my ears while I'm running. Which of these two would you get?

Hey guys, I've been trying to figure out why my cmoy doesn't work properly. I've checked all my traces and my soldering job, but I still cant find out what's wrong. Two things I've noticed though, is that when I have the amp hooked up to speakers, it works, for the most part (lots of noise at...

I am currently working on a cmoy amp and I'm having a few issues. I am using a ac-dc adapter as the power source. One is with wiring. When I have my speakers hooked up to the output jack of the cmoy, it seems to work and sounds fine except for a few other details (more on that later). But...

Quote: I would definitely steer clear of the 280's. I owned them for a little while and sold them. I found them to be very uncomfortable and they feel very cheap to me. The sound was very bland to me and just were not very fun to listen to especially with alternative and rock. Quote...

Recently, I chose to assemble a cmoy amp based on the OPA2227. I went through tangent's site looking at tweaks and stuff, but my finished product is a little off. My first issue is getting rid of line noise (some static in the form of a hissing sine wave). I am powering my amp with a 24v...