Bottlehead Forum

Bottlehead Finished Products => Legacy Products => Seductor => Topic started by: Samsquatch on March 18, 2015, 11:13:52 AM

Title: Capacitor upgrade?
Post by: Samsquatch 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

Title: Re: Capacitor upgrade?
Post by: Paul Birkeland 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

Title: Re: Capacitor upgrade?
Post by: Paul Joppa 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.

Title: Re: Capacitor upgrade?
Post by: Samsquatch on March 20, 2015, 09:23:37 AM

Thanks guys.

Title: Re: Capacitor upgrade?
Post by: Llewellen 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?