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Philco 50-520
#6

The Output tubes commonly used in AA5 type sets such as 50L6, 50A5, 50C5, etc. generally have a transformer primary impedance of about 2.5KOhm. Sets with 41s, 42s, 2A5, 6K6, 6F6 etc. generally have primary impedance of about 7K-10K. 6V6s generally are about 5K.

Bottom line, is that you will likely not smoke anything if the wrong transformer is installed, it will just not have the highest volume. The needed transformer for this set would be anything out of any AA5 type of set.

"Do Justly, love Mercy and walk humbly with your God"- Micah 6:8
"Let us begin to do good"- St. Francis

Best Regards, 

MrFixr55


Messages In This Thread
Philco 50-520 - by Joe Rossi - 09-03-2026, 09:33 PM
RE: Philco 50-520 - by MrFixr55 - 09-03-2026, 09:52 PM
RE: Philco 50-520 - by RodB - 09-03-2026, 10:11 PM
RE: Philco 50-520 - by Arran - 09-04-2026, 12:27 AM
RE: Philco 50-520 - by DaleHCook - 09-04-2026, 08:16 AM
RE: Philco 50-520 - by MrFixr55 - 09-04-2026, 10:46 AM
RE: Philco 50-520 - by DaleHCook - 09-04-2026, 12:13 PM
RE: Philco 50-520 - by Joe Rossi - 09-04-2026, 03:19 PM
RE: Philco 50-520 - by DaleHCook - 09-04-2026, 08:37 PM
RE: Philco 50-520 - by Joe Rossi - 09-05-2026, 04:20 AM
RE: Philco 50-520 - by Arran - 09-05-2026, 02:02 PM
RE: Philco 50-520 - by Joe Rossi - 09-05-2026, 02:47 PM
RE: Philco 50-520 - by DaleHCook - 09-05-2026, 03:12 PM
RE: Philco 50-520 - by Joe Rossi - 09-05-2026, 04:47 PM
RE: Philco 50-520 - by MrFixr55 - 09-05-2026, 05:23 PM
RE: Philco 50-520 - by DaleHCook - 09-05-2026, 05:34 PM
RE: Philco 50-520 - by Arran - 09-05-2026, 07:00 PM
RE: Philco 50-520 - by DaleHCook - 09-05-2026, 08:31 PM
RE: Philco 50-520 - by Arran - 09-05-2026, 09:53 PM
RE: Philco 50-520 - by DaleHCook - 09-06-2026, 01:21 AM
RE: Philco 50-520 - by DaleHCook - 09-29-2026, 06:56 AM



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