Bogen RR-501

[moschops]

Hello all,

I've come upon a 1956 Bogen RR-501 mono receiver in decent shape and was thinking of giving it a little restoration but I cannot find schematics anywhere. The Radio Museum lists one, but it turns out to be for the RR-501-B, which is a bit different. Nothing at Hifi Engine or in Sam's Photofact either. Can anyone point me to one, or, if anyone has worked inside one could you share your experience? Thanks!

 

[cademan]

If you can solder, just replace all the tubular capacitors you see underneath. Voltage and MFD specs are written on them.

 

[Tom Bavis]

Schematically, I'd expect the 501 and 501B to be close since they use the same tubes. Chassis layout is a bit different though.

 

[moschops]

Thanks, guys. Should I change those waxy Marbelite caps as well?

 

[gadget73]

I would. Wax paper capacitors are not exactly known for excellent durability.

 

[moschops]

 

[Meade]

Bogen RR-500 (Sams 243-3) is also similar, with slight difference in tube and I.F. layout. Power and output transformers are in the same location and orientation as the pictured RR-501 though. Schematic looks very close to RR-501B (Sams 339-3). I have a Bogen RR-501 in storage, but not sure if it is the “B” version or not.