lehtinel
Head-Fier
- Joined
- Oct 14, 2010
- Posts
- 79
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- 11
Yup, especially for a first-timer it's confusing with this type of a problem. Switched R3 for 4.7kOhm, problem persist, changer the OPAMP, problem persist. Do you thing my ground is weak?
Hey,
New here - haven't done much DIY audio, but as a grad student in engineering I have access to some tools and it's always been something I wanted to get into. I've ordered a pair of HD650's and an Audiotrak prodigy hd2 so I'm pretty excited to get working on some things.
Anyway, I also started with the cmoy, and built one a couple of days ago. The sound, however, was also kind of muffled and since I could not find any mistake, I decided to simply make another one alongside. The newer one I made sounds beautiful.
What's strange is that if I put in an older version of the OPA2132PA (I had one lying around) even the 'muffled' amp sounds good - albeit with a lot of hiss in the background. Since it seems that I'm not the only one with this problem, I will test a few things with my oscilloscope and wave generator this week and let you know what I find the problem to be.
Did you ever figure out why the first one didn't work?