Vintage Asylum

What kind of amp is this..I posted it earlier and the post got deleted.

75.128.188.58

Michael Samra

D

I picked it up for 50 bucks with all these extra tubes but it takes field coil drivers..Anyway,the OPT has a shorted secondary which is underneath.All the tubes being there are a nice quad of VT-115s and three 6L6gc black plates and a few 6SN7s ought be to worth the 50 that I paid.It also that big choke and some nice power trafos.
"If it measures good and sounds bad, it is bad; if it measures bad and sounds good, you have measured the wrong thing."

- Daniel R. von Recklinghausen

Follow Ups:

RE: What kind of amp is this..I posted it earlier and the post got deleted. - sony6060 06:48:07 02/25/15 (0)
A giveaway of some organ amps is use of RF type air core inductors on the power tubes. I have not seen RF type inductors in home entertainment audio amplifiers.
RE: What kind of amp is this..I posted it earlier and the post got deleted. - soundmotor 05:39:49 02/25/15 (0)
Yep, Baldwin organ speaker cabinet amp. The power supply iron is very good. The output iron is very bad. I had a pair of these a long time ago and sold them to a builder. He used one of the amp's power supplies as the basis for a stereo 6550 amp IIRC. A complete set of power supply iron, multiple output and rectifier tubes, plus assorted bits was a value buy.
From a Baldwin organ, Michael... I learned a LOT about making a quiet amp from those guys... an old one~nT - Cleantimestream 22:02:23 02/20/15 (1)
~!
The Mind has No Firewall~ U.S. Army War College.
- RE: From a Baldwin organ, Michael... I learned a LOT about making a quiet amp from those guys... an old one~nT - Michael Samra 08:38:21 02/21/15 (0)
  Thanks Ken
  Now maybe I can find a schematic for it.I was able to get it to come on by going direct to the primaries of the two power transformers and then I put in a 7.5k 15 watt resistor off the main B+ to get the screen voltage on the 6L6s.I think the resistor that supplies the screens and the rest of the circuit is in the field coil driver.
  I just found a thread after you told me what they were.
  "If it measures good and sounds bad, it is bad; if it measures bad and sounds good, you have measured the wrong thing."
  
  - Daniel R. von Recklinghausen
  - http://www.audioasylum.com/cgi/t.mpl?f=vintage&m=163133 (Open in New Window)
  Edits: 02/21/15

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