Since I have a few bits and pieces and thanks to a few friends I have enough parts to build a we ECL82 amp, hope to get a couple watts out of it. The chassis is a cake tin, the transformers boxes are decorative tins from the 100 yen shop. Still at the start, but taking shape slowly.
Thanks to http://www.single-ended.com/ for helping.
Many thanks to Ken, please visit one of my favorite stores www.vt4c.com for all your tube needs.
Thanks to TC, Geoff aka tubehead and dangerous Dave for helping me out, you all know who you are :)
13/4/12 - Fitted speaker connector today
15/4/12 - Wired up the AC, switch, B+ transformer and fuse today :)
16/4/12 - Bridge rectifier and filtering 50uf 120ohm 50uf with a 270k resistor across the caps.
26/4/12 - Volume, all resistors, B+ all wired up to amp.
02/5/12 - Fitted coupling caps today.
18/5/12 - I have some audio transformers.
19/5/15 - Fitted audio transformers.
29/5/12 - Made we base for the amp to sit on.
30/5/12 - Second coat applied to the base
01/6/12 - I can confirm the amplifer works, has some AC hum issues to be resolved.
I hope you have all enjoyed my amp build and followed it along the way, not a fast build but just when I had the time. When I have some speakers I will let you know how it performs.
Top view, tube sockets, power switch, fuse and volume all mounted
Going to run a SS recitifer, you can see the we 200mA 200vac trasnformer to the left.
Diode bridge and filtering 260vdc unloaded
Top view audio transformers
Drilled holes in the bottom to let air in
Back view just speakers and power cord
This photo and ones below of finished amp with 2 coats of stain on the base.
Proposed schematic from http://nmwilliam.tripod.com/ecl82.html