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Hi, my first post here, I'm Dino, from Croatia, my english is not very good, but you will understand pictures and clips, I made AC30 klon with only EF86 chanel and SS rectlifer.

Cut pot cap is from hoffmans scheme, and i think it i have to be 100n becouse cut working only at last quoter of turn

I have to make one more post to show you pics and clips:

Scheme:

http://blueguitar.org/new/schem/vox/ac34ef86.pdf I

some modifications on hoffman layout


Chasis from old radio







Box:








Some parts:

4 x EL84 JJ Tesla
1 x 6N2P for phase inverter
1x NOS Valvo EF86



Its alive





clips

strat:
http://www.youtube.com/watch?v=SNRFFDkhJII

les paul:
http://www.youtube.com/watch?v=6HbLYfgTyFQ

speaker is eminence Legend V128

Nice. What sort of B+ voltage are you running at.

_________________
Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps

Thanks,

secondary winding on transformer is 300V, so B+ must be slight over that because it have SS rectlifer, i did not measure B+,iwas too happy it works, because it's my first amp


I forgot to mention, it have 6 point tone switch like matchless DC30, but i don't remember all Cap values, not identical values but close.

I would measure the B+ becasue 300 V + SS rectifier might have more than 400 V on the plates of the EL84 and you shouldnt have that much.

A tube rectifier (5AR4) would probably solve that.

But I would check.

_________________
Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps

Good to see an "Earth-friendly" build I especially like seeing those pieces of the transatlantic cable being put to good use

Joe G

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Some assembly required,
Brain sold separately...

I know that i should measure B+, and i wanted do that when i finish box, but last 6 months waiting for free time
But Amp still working last 6 months, I played it every week two times for 2- hours, and it have good sound all time.