Need Help - Monoblock Power Amplifier EL 34

[Beijert]

Can´t you just leave the binding post on the chassis (not connected) and make a base underneath with a nice powercord and speaker bindings?

That way you´ll keep it all original and safer because the bottom is closed.

 

[apnneto]

I gave up. I found this:

Terminal strips and barrier blocks

I will keep the original design.🙂

Thank you for your advise.

 

[apnneto]

I think the 3.5k OPT is a bit high, with the voltages that you have, 2.5k might be better (espically if you plan to run in pentode mode), as for the choke, something like the Hammond 193D or 193G should work, both are rated for 150mA Idc.

I will do some measures and see if it will fit there.

I'm studying the output stage (UL or not), to make a better decision. The OPs will be the last components that I will order.

 

[apnneto]

First step done: disassemble everything.

 

[jazbo8]

Man, you are fast! Love the classic dogbone resistors, hope they all measure well, then you can keep the vintage look below the deck as well, really looking forward to see how this project develop going forward.

 

[apnneto]

"If it's working, don't fix it". I agree, but after 50 years, there is no other way. You need to check everything. Take a look at this table (resistors):

 

[apnneto]

Man, you are fast! Love the classic dogbone resistors, hope they all measure well, then you can keep the vintage look below the deck as well, really looking forward to see how this project develop going forward.

Thank you. I will keep all the components that are inside the tolerance.