Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Jack1962 on November 23, 2014, 11:02:26 am

Title: Hotrod Deluxe Power Supply Caps
Post by: Jack1962 on November 23, 2014, 11:02:26 am

in the hotrod deluxe they use a voltage multiplier in the power supply , using 8200pf 1Kv caps(4) . would it make much difference if any if they where replaced with 10000pf 1KV caps ?

Title: Re: Hotrod Deluxe Power Supply Caps
Post by: sluckey on November 23, 2014, 11:47:44 am

Hmmm, the schematic I see uses a standard FWB with a single 8200pF across the AC input to the bridge, but I see no reason to not just use a .01µF.

Edit... found a later schematic of a HR Deluxe/Deville that does have a cap across each diode of the bridge. I'd still use .01 caps if I could not find 8200pF.

Title: Re: Hotrod Deluxe Power Supply Caps
Post by: Jack1962 on November 23, 2014, 12:04:33 pm

Thanks Sluckey , could you either post that later HR Deluxe/Deville schematic or the link to it ?

Title: Re: Hotrod Deluxe Power Supply Caps
Post by: sluckey on November 23, 2014, 12:07:04 pm

http://support.fender.com/schematics/guitar_amplifiers/HotRod_DeluxeIII_schematic_Rev-B.pdf (http://support.fender.com/schematics/guitar_amplifiers/HotRod_DeluxeIII_schematic_Rev-B.pdf)

Title: Re: Hotrod Deluxe Power Supply Caps
Post by: Jack1962 on November 23, 2014, 12:46:07 pm

Thanks that's the monster  :thumbsup: