The old op-amp decoupling thread

Tweakers' Asylum

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216.13.52.5

Hi,
a little experience I want to share. For some times , I play with my preamp that consist of a bare OPA2604 with a gain of 2. The PS I use only have a 10uF after the last regulator across + and GND and one across - and GND. I add another 10uF directly between + and - and listen to that for almost one year. Then, two weeks ago, after reading here that bigger caps should be use, I add a 1000uF between the + and GND (same thing for the minus one) directly across the IC. Now that I remove those 1000uF, I feel better. Adding such big caps sucked the life of the sound and the bass become fat and boomy. The soundstage lost focus too. And I tried too with a OPA2134 and appart the thing that this IC present the sound in a non-dynamic and lazy way, the bass remain the same: fat and boomy. So far, my advise will be to be moderated on the value you put across the line!
Regards,
Daniel Trudeau

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Topic - The old op-amp decoupling thread - eagle1 17:52:53 05/21/01 (9)

Re: The old op-amp decoupling thread - bobwire 11:18:54 05/22/01 (8)

Re: The old op-amp decoupling thread - eagle1 12:19:56 05/23/01 (2)

Re: The old op-amp decoupling thread - carlmart 15:52:05 05/23/01 (0)

Re: The old op-amp decoupling thread - bobwire 14:26:43 05/23/01 (0)

Re: The old op-amp decoupling thread - Rotellian 15:03:22 05/22/01 (3)

Loss of bass weight? - Velo74 01:20:18 05/25/01 (0)

Re: The old op-amp decoupling thread - bobwire 18:28:42 05/22/01 (1)

Re: The old op-amp decoupling thread - rotellian 04:26:22 05/23/01 (0)

Re: The old op-amp decoupling thread - MikeCh 13:41:08 05/22/01 (0)

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