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'A transformerless reverb driver'
Author:John Polstra (registered user: 641 posts )
Date: Sat, Jul 21st, 2012 @ 15:29 ( . )

That's interesting, Phil. I wish I knew for sure which reverb tank Gibson used in that amp. Googling gave me mixed answers. Some folks said it was a 9BC2C1B (190 ohm), but one guy posted a big list that said 4FB2A1C (1475 ohms).

I just finished refurbishing an ancient Danelectro DM-25 for a guy. It drives the reverb tank capacitively coupled from a pair of medium-mu triodes (6FQ7 or 6CG7) in a self-split push-pull arrangement. It sounds pretty good, too. The reverb tank is like nothing I've ever seen before. It's skinny and sits on a couple of leaf springs on top of the chassis. I read somewhere that its output transducer is piezoelectric. Luckily, the original tank still worked. I don't think I could have found a replacement anywhere.

John

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Replies:
--* A transformerless reverb driver
7/21/2012 @ 15:53--PhilS
8/07/2012 @ 12:02----brawler
8/07/2012 @ 13:21------PhilS
7/23/2012 @ 10:08--stringbend
----* Danelectro DM-25 pics
7/23/2012 @ 10:36----John Polstra
7/23/2012 @ 11:43------Stephen Keller
7/23/2012 @ 17:09------Celeste hall

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