The Amp Garage

In some instances I have been able to do small tear repairs to speakers with a stuff called K-Kote seam Sealer Kanyon industries. It works quite well with very thin tissue, like what you get with a shirt or sweater as packing. I can no longer find this item and I wonder if anyone out there knows the...

Good idea, 1k 3w screen grid resistors.

Yes this amp has an assembly that would be tough to isolate. I looked at a fiber washer, but it seems iffy.

What is the dissipation on those Zeners like? A board is best to get them some air?

Ok Steve, will keep that in mind. What do you reckon I need in the way of dropping R for that 290HAX to get it in the ballpark.

10k 5w?

A

Understood thanks Martin

That one shows 100 mA for the HV secondary. However, if it worked for a 5F10 Harvard with 2x 6V6GT, then it will work for your 2x 6AQ5. There is a 120VAC primary version 290HAX https://www.hammfg.com/files/parts/pdf/290HAX.pdf you could use if you don't need to operate internationally. Martin, the ...

Yes Patina

All done, back to the owner shortly, he is pleased.

Enzo was gem, he will be missed, but how lucky we were to have had his input all these years.

I will start with gentle approach and see if anything loosens up.

Have you guys bothered to do a de-rust on an amp like this, or is it too risky... loose the screened type and graphics?

Yes seems ideal...lucky break. Gonna see about sizing today.

A

May be able to source a Dynaco PT that has dual 6.3v taps and 205/0/205 secondary. It's tad bigger than original but it may just fit. Looking it over

Great looking build. Such a wonderful amp. Love the one I built. You gonna run external reverb?