Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Jerry garrcia on July 28, 2022, 03:02:50 am

Title: EH-150/185 build complete
Post by: Jerry garrcia on July 28, 2022, 03:02:50 am

The build is finally completed.
Had lack of space in the chassis so instead of the three 6SQ7 tubes in the preamp section I used a 6SC7 so I could get rid of a tube socket. Also used a 6SN7 PI instead of the 6N7 in the original circuit. No field coil so took a PT with lower voltage and used resistors an a choke for the preamp section. Plate voltages of the 6L6’s 283V so in the ballpark of the original one.
Reverb driver a LNDVerb with mosfets. Short tank.

Title: Re: EH-150/185 build complete
Post by: bmccowan on July 29, 2022, 07:36:24 pm

Cool - how do you like the sound? I like the sound of 6L6s at that 300V +/-. I built the other version of the EH-185 - the one with a gaggle of 6SJ7s with some help here figuring out the strange inductor bass control. Need to change that as there is a reason other amps do not use an inductor there. I've also been thinking of converting it to the 6SQ7 version - no particular reason.