RE: Having worked on some Counterpoint gear....

Posted by Barry (A) on June 29, 2016 at 05:26:29

In Reply to: Having worked on some Counterpoint gear.... posted by Cougar on June 28, 2016 at 21:23:39:

This amp bears no resemblance to earlier Counterpoint amps being a completely different circuit design. It has only a pair of 6sl7s for input and a separate toroidal choke regulated supply for the tubes. No funky tube matching issues like the old SA20. It uses matched bipolar output transistors not Mosfets with no resistors. All the parts in it are custom including the wiring and over 50 TX 2575s in the signal path and a giant custom Plitron power transformer for the output stage.

Agree. Would not advise 80v caps on a 75 volt PS rail - using 100v on its twin. The muting relays minimize current surge on turn on. These particular PS caps have been in use for 15 years with no issues.

Sounds better than nice......

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Follow Ups Full Thread

Topic - Blackgate break-in again? - sherod 10:03:22 06/16/16 (20)

RE: Blackgate break-in again? - Mike B. 16:13:54 06/17/16 (0)

I did that with a tuner.... - Cougar 10:46:58 06/16/16 (18)

Uh oh!!!!!!!!!!!! - Barry 16:57:35 06/16/16 (15)

In the circuit shown in the photo,... - Lew 10:39:59 06/17/16 (8)

RE: In the circuit shown in the photo,... - Barry 19:29:39 06/18/16 (7)

RE: In the circuit shown in the photo,... - Lew 08:22:31 06/21/16 (6)

I have heard the same thing about operating Voltages and Cap... - Cougar 18:10:45 06/21/16 (5)

RE: I have heard the same thing about operating Voltages and Cap... - Lew 07:36:39 06/28/16 (4)

I saw this a few years back in a post in a forum which had link.... - Cougar 11:07:26 06/28/16 (3)

Counterpoint stuff was great sounding, but.. - Lew 18:36:14 06/28/16 (2)

Having worked on some Counterpoint gear.... - Cougar 21:23:39 06/28/16 (1)

RE: Having worked on some Counterpoint gear.... - Barry 05:26:29 06/29/16 (0)

Why do you say you're in big trouble? - Cougar 17:26:44 06/16/16 (5)

I was just kidding.... Cap Break In - Barry 17:51:24 06/16/16 (4)

RE: I was just kidding.... Cap Break In - alan m. kafton 00:20:31 06/17/16 (0)

That's what I noticed too in sound with the Black Gates - Cougar 19:24:31 06/16/16 (2)

Have you tried the new AudioNote/Rubycon? - Barry 20:14:38 06/16/16 (1)

No and maybe not ever.... - Cougar 20:34:11 06/16/16 (0)

RE: I did that with a tuner.... - sherod 10:52:46 06/16/16 (1)

I would like to put in an addendum here... - sherod 21:05:39 08/28/16 (0)

Follow Ups

RE: Having worked on some Counterpoint gear.... - Barry 05:26:29 06/29/16 (0)

RE: Having worked on some Counterpoint gear....

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