1959 Ampex 6973 Monoblocks

Tube DIY Asylum

Do It Yourself (DIY) paradise for tube and SET project builders.

I just got ahold of this pair of amps and I'm excited to bring them back to former glory, and maybe more.

Sweet looking little chassis for something designed to spend its life hidden in the back of a console! Components look to be original including Sprague Bumblebee film caps. Output tubes are whipped; one cracked it's envelope when I pulled it from my tube tester's socket. While I'm searching for a good set to replace them, I plan to re-cap the power supply and cathode bypass on the output tubes.

I' thought I might first stick to the original power supply design, replace electrolytics in-kind, make sure other components are to spec, then listen and get to know it. I gather there are folks here who've done more than that to these amps, and I'm curious to know what your favorite changes or upgrades have been. I don't have a schematic, but if I don't come up with one in the next couple of days I'll draw it. CRCRC coming off the 6CA4 rectifier.

Thanks!
Roger

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Topic - 1959 Ampex 6973 Monoblocks - rlschow 22:33:59 04/28/10 (11)

RE: 1959 Ampex 6973 Monoblocks - truep 23:58:28 04/29/10 (0)

RE: 1959 Ampex 6973 Monoblocks - Tom Bavis 05:30:13 04/29/10 (0)

RE: 1959 Ampex 6973 Monoblocks - Michael Samra 04:10:09 04/29/10 (8)

RE: 1959 Ampex 6973 Monoblocks - rlschow 22:45:39 04/29/10 (0)

RE: 1959 Ampex 6973 Monoblocks - rlschow 08:17:46 04/29/10 (2)

RE: 1959 Ampex 6973 Monoblocks - Michael Samra 15:48:00 04/29/10 (0)

RE: 1959 Ampex 6973 Monoblocks - DanK tubes 09:12:54 04/29/10 (0)

RE: 1959 Ampex 6973 Monoblocks - Cleantimestream 07:43:17 04/29/10 (3)

RE: 1959 Ampex 6973 Monoblocks - Michael Samra 07:51:35 04/29/10 (2)

RE: 1959 Ampex 6973 Monoblocks - rlschow 17:35:43 04/30/10 (1)

RE: 1959 Ampex 6973 Monoblocks - Michael Samra 04:56:36 05/1/10 (0)

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