marshall jcm 800 bass (printed board inside)

for power transformer replacement, supply by nik of ceriatone at a great price !

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..