RE: Are they durable you ask?

Posted by TubeAcolyte (D) on January 30, 2015 at 10:50:59

In Reply to: Are they durable you ask? posted by Michael Samra on January 30, 2015 at 08:50:31:

Tube-tastic, sir! This is EXACTLY what I needed to hear. Thank you. The 400PS is a beast. It will take these KT88 into the 60-75W RMS/tube depending on bias, and if I have all 3 4ohm taps occupied.

How it manages that output is still a little bit of a mystery to me. There's a regular-ish negative feedback going back into the 6L6/transformer driver stage from the OT. Yet, I can also see some sort of feedback from each 4ohm speaker jack (each a distinct output winding) back into the cathode of each 3 pairs of power tubes, .

I figured out standard Class A and AB, but the 400PS is a real oddball...
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May your tubes be lively, warm, and long-lasting. Holy be thy heater.

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Follow Ups Full Thread

Topic - Gold Lion KT88 - Abuse, Ratings and Experience - TubeAcolyte 05:34:23 01/30/15 (17)

Not PS400 but PS300 - Chip647 07:51:59 01/31/15 (0)

I posted the question on Fender Amp board. - FenderLover 18:36:57 01/30/15 (1)

GL KT-88 - FenderLover 16:14:34 01/31/15 (0)

RE: Gold Lion KT88 - Abuse, Ratings and Experience - sony6060 15:48:16 01/30/15 (0)

Do you run three cabs? - Alpha Al 13:28:38 01/30/15 (3)

RE: Do you run three cabs? - TubeAcolyte 13:33:37 01/30/15 (2)

RE: Do you run three cabs? - Alpha Al 04:42:04 01/31/15 (1)

RE: Do you run three cabs? - TubeAcolyte 06:50:53 01/31/15 (0)

Are they durable you ask? - Michael Samra 08:50:31 01/30/15 (1)

RE: Are they durable you ask? - TubeAcolyte 10:50:59 01/30/15 (0)

Do you have a 400PS? - FenderLover 07:11:22 01/30/15 (6)

RE: Do you have a 400PS? - TubeAcolyte 07:49:39 01/30/15 (5)

Very nice! - FenderLover 18:00:57 01/30/15 (4)

RE: Very nice! - TubeAcolyte 19:37:35 01/30/15 (3)

You have the original folded cabs, too? - FenderLover 16:16:55 01/31/15 (2)

RE: You have the original folded cabs, too? - TubeAcolyte 13:32:12 02/01/15 (1)

EV versus JBL - FenderLover 07:52:56 02/02/15 (0)

Follow Ups

RE: Are they durable you ask? - TubeAcolyte 10:50:59 01/30/15 (0)

RE: Are they durable you ask?

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