RE: PL504

OTL Asylum

OTL, Output Transformerless Amplifier User Group.

In Reply to: RE: PL504 posted by rkenned02@gmail.com on January 19, 2019 at 21:42:30:

"Apparently it is a transmission line transformer which shifts the output tubes impedance from 72 ohm to 8 ohms"
So it is not an OTL, then. It is a bit surprising, in fact, since the Graaf GM20 and the Graaf GM200 are both genuine OTL amplifiers.

Edits: 01/20/19

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Follow Ups Full Thread

Topic - Graaf GM100 - rkenned02@gmail.com 02:19:37 01/09/19 (9)

SEE URL Para 2 - Frihed89 01:37:38 01/22/19 (4)

RE: SEE URL Para 2 - cpotl 09:12:22 01/22/19 (3)

new type of interfacing" sigh... nothing new under the sun"~nT - Cleantimestream 00:49:04 07/01/19 (0)

Thanks nt - Frihed89 01:23:21 01/23/19 (1)

It's an Un-OTL - Lew 12:46:54 01/28/19 (0)

PL504 - Ralph 10:49:18 01/09/19 (3)

RE: PL504 - rkenned02@gmail.com 15:57:12 01/09/19 (2)

RE: PL504 - rkenned02@gmail.com 21:42:30 01/19/19 (1)

RE: PL504 - cpotl 09:50:23 01/20/19 (0)

Follow Ups

RE: PL504 - cpotl 09:50:23 01/20/19 (0)

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