fender twin reverb 1960!?

stereo tube hifi

wooden box made out of pine..

my first stereo tubes amp design for hifi use.

2 x el84, 1 x 12ax7.

preamp plate voltage ~100v

el84 plate voltage 240v, screeen grid voltage 235v(both tubes) ,with chatode resistor 120R(chatode bias)

sounded great due to single ended config, but depends on speaker too.

ELK pushpull 6L6/EL34? with reverb tank..!! made in japan..

bias section..

first preamp..

backpanel..

power transformer..

top view.

http://www.drtube.com/schematics/elk/elkbrochure.jpg

owner --mr UltraCosmo(tone inc.) ..got it on 16 march ,still debuging ,taking voltage reading..

mr bassman 135 (head)

this bassman 135 from cbs era based on the faceplate..
preamp section.. bass and guitar.. carbon comps on the anode (100k) and orange drops coupling caps.
bassman from front view
the head cab

top view..

phrase inverter section...
rectifier section..

push pull 6v6gt 20watt

push pull using 6v6gt and 12ax7 preamp and Ez81(rectifier)

with holy grail filter caps and orange drop 715p . Alpha pots, wire by RS ,

6v6gt - mixture of NOS and new production.. toshiba japan with electro harmonics

12ax7 - tungsol (preamap)