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Topic: Reverb Tank Code needed for Supro 600R Unit.. |
Mike Marsh
From:
Florida, USA
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Posted 8 Aug 2021 11:32 am |
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Any chance you guys and gals know what Reverb Tank would work on this rare Reverb unit made by Supro. These are the ones that are fed from any amps Ext Speaker jack into a 5uf Cap.
I think these are code 4F Gibbs as used on the Hammond Organ amps. I need the equivalent Accutronics Belton Code.
Thanks,
Mike
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Williams Series 700 4X5 |
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Ken Fox
From:
Nashville GA USA
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Bill Sinclair
From:
Waynesboro, PA, USA
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Posted 8 Aug 2021 8:00 pm
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I've got a '67 Montgomery Wards amp that was built by Valco. The reverb springs were in a cardboard enclosure like I've seen on a number of Supros and other Valco amps (Gibbs 4F kind of rings a bell). After some digging around, I found a reference to a MOD spring replacement. The model number of the springs I installed and are still working well: P-RMOD-8AB2A1B Sorry, I don't have a good picture of the back of the amp right now.
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Jon Zimmerman
From:
California, USA
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Posted 10 Sep 2021 8:43 am Drawn by:
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| The link Ken Fox provided appears on pp164 of my copy of the Aspen Pittman (RIP) book of tube amp circuit diagrams. Look who created same diagram: H (Howard) R. Dumble! He’s no ‘Fumble’-er. 😎 My guess would be that this diagram covered the ‘stand alone’, cabinet mounted Supro model of that era. |
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Scott Swartz
From:
St. Louis, MO
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Posted 12 Sep 2021 9:27 am
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That 12DR7 on the schematic is one of the many dissimilar triodes mainly used in TVs.
These are great for DIY preamps and other audio uses, half as a gain stage, and the other as a low impedance cathode follower.
Lots of great NOS tubes available of these types for very low prices, just have to do a bit on research to build with them.
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Scott Swartz
Steeltronics - Steel Guitar Pickups
www.steeltronics.com |
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