Rogers Majestic R-646

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Rogers Majestic R-646

RodB
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Posts: 1,172
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Joined: Feb 2015
City: Roseville, MN

#19

6 hours ago

You can bypass the interstage transformer by disconnecting the primary, connect a load resistor of about 10k - 20k to the 24 plate, connect a coupling cap to the 24 plate to 45 grid. The transformer secondary takes care of the phase inversion. I've done this in a couple 1930s sets. Works great, and you can wait till a replacement transformer shows up. This is documented elsewhere on this site by Ron Ramirez.

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Messages In This Thread

Rogers Majestic R-646 - by Vlad95 - 05-21-2025, 10:32 PM

RE: Rogers Majestic R-646 - by MrFixr55 - 05-21-2025, 11:52 PM

RE: Rogers Majestic R-646 - by Arran - 05-22-2025, 01:06 AM

RE: Rogers Majestic R-646 - by Vlad95 - 05-28-2025, 10:21 PM

RE: Rogers Majestic R-646 - by Vlad95 - 05-28-2025, 10:23 PM

RE: Rogers Majestic R-646 - by Vlad95 - 05-28-2025, 10:24 PM

RE: Rogers Majestic R-646 - by Vlad95 - 05-28-2025, 10:28 PM

RE: Rogers Majestic R-646 - by radiorich - 05-28-2025, 10:42 PM

RE: Rogers Majestic R-646 - by Vlad95 - 05-28-2025, 10:58 PM

RE: Rogers Majestic R-646 - by MrFixr55 - 05-29-2025, 07:47 AM

RE: Rogers Majestic R-646 - by Paul Philco322 - 05-29-2025, 11:53 AM

RE: Rogers Majestic R-646 - by Vlad95 - 05-29-2025, 11:54 AM

RE: Rogers Majestic R-646 - by Vlad95 - 05-29-2025, 12:05 PM

RE: Rogers Majestic R-646 - by Paul Philco322 - 05-29-2025, 12:07 PM

RE: Rogers Majestic R-646 - by Vlad95 - 05-29-2025, 12:18 PM

RE: Rogers Majestic R-646 - by RadioSvit - 05-29-2025, 01:23 PM

RE: Rogers Majestic R-646 - by Vlad95 - 06-03-2025, 11:09 PM

RE: Rogers Majestic R-646 - by Vlad95 - Yesterday, 11:40 PM

RE: Rogers Majestic R-646 - by RodB - 6 hours ago

RE: Rogers Majestic R-646 - by Vlad95 - 4 hours ago

RE: Rogers Majestic R-646 - by RodB - 4 hours ago

RE: Rogers Majestic R-646 - by Vlad95 - 2 hours ago

RE: Rogers Majestic R-646 - by RodB - 56 minutes ago

RE: Rogers Majestic R-646 - by Arran - 35 minutes ago

RE: Rogers Majestic R-646 - by Vlad95 - 29 minutes ago

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Recent Posts
Rogers Majestic R-646
Thanks RpdB I don't think there's much difference with interstage transformers of different models other than dimersion...Vlad95 — 03:27 PM
Rogers Majestic R-646
Vlad; I looks like your set has the same problem that mine did, both a bad output transformer, and a bad audio inters...Arran — 03:21 PM
Rogers Majestic R-646
Ouch! Not often the secondary takes a hit. Wish there was a better solution. I have a good interstage transformer but it...RodB — 02:59 PM
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By the way, the bypass you suggested is a rare solution in some circuits. For example, this schematics solution is used...Vlad95 — 01:43 PM
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No, you are wrong, because you did not know the details. Unfortunately, only ONE winding out of six is intact in both t...Vlad95 — 01:14 PM
Rogers Majestic R-646
The output 45s are still in push-pull because the transformer secondary winding is still in the grid circuit providing o...RodB — 11:52 AM
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