Skweek
New Head-Fier
- Joined
- Dec 8, 2009
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Hi all,
I recently acquired a UK built Cmoy which has quite a nice, thick tracked PCB, with the intention of carrying out a little experimentation. It uses a TL2426 rail-splitter and a 1000uF power cap. I'm currently using a 15v battery pack.
Firstly, can someone point me to a definitve comparison of opamps, and also a tutorial on tweaking Cmoys?
And a specific question about mine; it came with National LC353 which I quickly found to be rather strident, regularly wince-inducing in fact. So, I've just put in an OPA2134 which is much sweeter and, surprisingly, more detailed (even the guy who made it reckoned I'd lose a little).
However the other first impression was that some of the impressive bass had gone (using Senn 580's). Sure enough, looping back to my sound card (M-audio delta 410 PCI) confirms that it rolls off slightly below 60Hz to about -1.5dB down at 20Hz. The LC353 was flat right down to 16Hz.
(Both are essentially flat above this, about -0.3dB down @ 20KHz).
So is there anything I can do to get that bass back?
thanks.
(correction; I beleive the original opamp was a LF353
I recently acquired a UK built Cmoy which has quite a nice, thick tracked PCB, with the intention of carrying out a little experimentation. It uses a TL2426 rail-splitter and a 1000uF power cap. I'm currently using a 15v battery pack.
Firstly, can someone point me to a definitve comparison of opamps, and also a tutorial on tweaking Cmoys?
And a specific question about mine; it came with National LC353 which I quickly found to be rather strident, regularly wince-inducing in fact. So, I've just put in an OPA2134 which is much sweeter and, surprisingly, more detailed (even the guy who made it reckoned I'd lose a little).
However the other first impression was that some of the impressive bass had gone (using Senn 580's). Sure enough, looping back to my sound card (M-audio delta 410 PCI) confirms that it rolls off slightly below 60Hz to about -1.5dB down at 20Hz. The LC353 was flat right down to 16Hz.
(Both are essentially flat above this, about -0.3dB down @ 20KHz).
So is there anything I can do to get that bass back?
thanks.
(correction; I beleive the original opamp was a LF353
