Capacitor upgrade?

Samsquatch · 11786

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Offline Samsquatch

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on: March 18, 2015, 11:13:52 AM
Because I'm electrically impaired I have to ask. What capacitors would I upgrade on the Seductor and what are good options for type?

Thanks

Mike
Winnipeg
Stereomour II   Seductor/Smash  Crack HD650 HD700
Rega Planar P3 Reduction Ortofon Bronze
Nuforce DAC 80
Fostex FE126EN in DIY backloaded horn enclosures
Best sounding system I've ever owned

Offline Paul Birkeland

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Reply #1 on: March 18, 2015, 11:17:17 AM
The only capacitors that I would recommend messing with are the parallel feed caps, which are supplied as 3.3uF 630V.  Anything between 2.2uF and 6.8uF at 630V or greater ought to work just fine.

Do not mess with any of the electrolytic caps in the amp, the values are chosen quite specifically for stability, and the amplifier may oscillate if those parts are messed with.

-PB

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline Paul Joppa

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Reply #2 on: March 18, 2015, 02:46:28 PM
To amplify what PB said, the negative feedback makes the amp significantly less sensitive to power supply noises and distortions, so improving the power supply would be expected to have much less effect than in no-feedback SETs.

Paul Joppa

Offline Samsquatch

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Reply #3 on: March 20, 2015, 09:23:37 AM
Thanks guys.

Mike
Winnipeg
Stereomour II   Seductor/Smash  Crack HD650 HD700
Rega Planar P3 Reduction Ortofon Bronze
Nuforce DAC 80
Fostex FE126EN in DIY backloaded horn enclosures
Best sounding system I've ever owned

Offline Llewellen

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Reply #4 on: April 05, 2017, 03:28:06 AM
Caution noted about maintaining cap values as designed but has anyone reported an audible improvement from changing cap manufacturer and/or construction method?

As an aside, what is the value of the PS caps?
« Last Edit: April 08, 2017, 01:37:47 PM by Llewellen »

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