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? Re Adcom GFA 555ii
? Re Adcom GFA 555ii
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Old 22nd January 2013, 03:57 AM   #1
Ccdave is offline Ccdave
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Default ? Re Adcom GFA 555ii

I'm considering replacing the 4 large caps in my Adcom 555ii amp with Nichicon gold tune caps. My ?'s are:

Does the large power supply caps influence sound?

How long do these large caps last?

One of the large original caps is starting to leak and I have already added the bypass caps and replaced all other existing caps with Elna Cerafines.

Thanks
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Old 23rd January 2013, 04:09 PM   #2
Triodethom is offline Triodethom  United States
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Quote:
Originally Posted by Ccdave View Post
I'm considering replacing the 4 large caps in my Adcom 555ii amp with Nichicon gold tune caps. My ?'s are:

Does the large power supply caps influence sound?

How long do these large caps last?

One of the large original caps is starting to leak and I have already added the bypass caps and replaced all other existing caps with Elna Cerafines.

Thanks
cap life is based on time and temperature. Leaking indicated they are gone . The amount of influence on sound is based upon the circuit and its psrr (power supply rejection ratio). The short answer in this amp yes.
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Old 23rd January 2013, 04:21 PM   #3
Ccdave is offline Ccdave
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Thanks
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Old 24th January 2013, 04:07 AM   #4
gootee is offline gootee  United States
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Quote:
Originally Posted by Ccdave View Post
I'm considering replacing the 4 large caps in my Adcom 555ii amp with Nichicon gold tune caps. My ?'s are:

Does the large power supply caps influence sound?

How long do these large caps last?

One of the large original caps is starting to leak and I have already added the bypass caps and replaced all other existing caps with Elna Cerafines.

Thanks
The sound is DIRECTLY PRODUCED by the current from the capacitors, and from any decoupling caps (and occasionally by the current from the rectifiers).

See the image at: Power Supply Resevoir Size
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