Man, that is one great looking amp. Bet it sounds super sweet. How you like that GE5U4GB/5AS4 rectifier? I really like those.
Thanks for the note,
First off, these pics were taken from the old couples home that sold me the amp, this is why the amp is not tuned-up.
First I cleaned the entire amp free from dust, compressed air and china bristle brushes. Remove the speaker and take out that huge dust-dam at the bottom of the front/cone, and brushed both sides of the cone, more air. I take a damp 12" x 12" damp towel with a long and short new paint stir stick to clean the dust between the front/baffle and the grille-cloth. More compressed air until it's all gone. I put the nuts/star washers back in the same exact locations. After I clean the good vintage keepers I keep them all covered except some for display. The amps I play I like to have them all clean and ready.
So much better for the pots n stuff. The white lettering is so fresh on this amp you can still see the small overspray dots if you look close.
All the wires were the way they left the factory, interesting how they bent the heater wire arched like that. When I took the top/back covers off they were stuck via the varnish.
I removed all the original tubes and put them in safe for safekeeping. I stash the tubes, ownership papers etc, in there so nothing gets lost. So much better than my older system.
When it comes to tubes I got it bad like you do, I have 4 caddy collection. I have an old USN Sylvania dual getter blackplate in the amp now, a set of old Tung Sol matched, and the pre amp was changed today to the 6072A 3M in V1, and the RCA 5751 3M in V2, and a RCA or GE 5751 3M in V3, I forgot. Anyway, it's all tubed-up and my old original tubes will stay new in the safe as they are a part of the history. You seldom see the fiberglass sleeves on the power cords but this amp has one. The old couple I bought it from said they ordered this amp from Fender.
I have an old 1960 era double sleeve of Raytheon 12AX7A tubes that look like Mullards, and in the same sleeve there is a completely different tooling plates etc. If I take some close pics will you help me ID them? They test very strong, like Sylvanias do.
The old Filter Caps all test and work OK, but I'm going to replace them soon, and install a 4007.
Notice the 6.8k phase inverter is used, and the schematic calls for a 10k? The used the 6k8 on all the larger amps from 58-> on. My 1957 5F6 and 1957 5F8 amps both have the 10k PI.
This is a great sounding circuit, in any of the 3 amps.
Just an old guy mak'in 8-tracks.