50's console speakers help

[Fritz]

I was thinking DC leaking from a not great PS, but more likely just a low end roll off, as said above, long out of spec by now.
The caps look like them old paper wax jobs.

[deckeda]

The only way it wouldn't be setup with RIAA eq on the phono input is if it were only made to play 78s; RIAA was already the standard for LPs and 45s. It's 78s which had a plethora of non-standard eq curves. But if it sounds good, it is good.

[Dick Moore]

Can't really tell where all the wires are going. Looks like the 4 capacitors are all in parallel which would give them a total value of the values of each all added together, making a single cap. would really help if you parse the wiring out and draw a sketch of what's actually connected to what.

[JoeH]

deckeda wrote:
The only way it wouldn't be setup with RIAA eq on the phono input is if it were only made to play 78s; RIAA was already the standard for LPs and 45s. It's 78s which had a plethora of non-standard eq curves. But if it sounds good, it is good.

RIAA eq. was standardized in 1954, but not all manufacturers adopted it right away. There were a number of competing equalizations as LP's had been introduced in 1948. Preamps for years afterwards might provide for switching between several of the equalizations. So it is quite possible the amp has something other than RIAA eq.

[mikebw]

WHiiP wrote:
Seriously, it sounds incredible. I've played through vintage fender tweeds, and I'm not going compare them, but this thing sounds good.

Hey if it sounds good then you're already done. Seriously, the amount of tweaking people do to their expensive equipment to get it to sound they way they want would seem ridiculous compared to what you've got.