Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: khansen810 on April 27, 2015, 02:33:16 pm

Title: Hoffman Princeton Reverb AA1164
Post by: khansen810 on April 27, 2015, 02:33:16 pm

I'm starting to work on building a Fender Princeton reverb amp.. On your site you mention to set the bias for the 6L6's to about 30 mA. When adjusting the bias 10K trim pot, what should the Intensity control be set at? I imagine this affects the bias setting. Thank you.

Title: Re: Hoffman Princeton Reverb AA1164
Post by: sluckey on April 27, 2015, 03:14:29 pm

Set it to zero. Better yet, turn the trem oscillator off.

Title: Re: Hoffman Princeton Reverb AA1164
Post by: Willabe on April 27, 2015, 03:37:17 pm

Princeton Reverb AA1164 uses 6V6's.


http://el34world.com/charts/Schematics/files/fender/Fender_princeton_reverb_bf_aa1164.pdf (http://el34world.com/charts/Schematics/files/fender/Fender_princeton_reverb_bf_aa1164.pdf)



             Brad    :icon_biggrin:

Title: Re: Hoffman Princeton Reverb AA1164
Post by: EL34 on April 30, 2015, 05:17:25 am

Hoffman Princeton reverb build info is here
http://el34world.com/schematics.htm#Hoffman_Princeton_Reverb_ (http://el34world.com/schematics.htm#Hoffman_Princeton_Reverb_)


As Brad mentioned, it uses 6V6's, not 6L6's
A good generic setting for 6V6's is around 25ma each



Turn the trem off when setting the bias