RE: ESLs and OTLs

Posted by Banat on January 31, 2014 at 12:35:12

In Reply to: RE: ESLs and OTLs posted by Ralph on January 31, 2014 at 10:51:01:

Hi Mr. Karsten !

Except those effect derived from insertion of GNFB also THD spectrum can be altered easy , in way of generation of higher order harmonics , from 5 th to 21 , which can alter in negative way quality of overall percieved sound .
Some positive effects from GNFB exist too , mostly by lowering of Amp output impedance , but again if GNFB is over done output power tubes can easy suffer overload trying to maintain constant output voltage on sometime very low load(speaker) dynamic value , finally resulting in Amp instability .

However I think difference between SS Amps and OTL Amps is huge ! , since most of commercial SS Amps have very low open loop bandwidth , but in the same time they have intentionally very high open loop voltage gain , so many SS Amps without insertion of significant value of GNFB will be helpless to achieve wide closed loop bandwidth .

Best Regards !

This post is made possible by the generous support of people like you and our sponsors:

Follow Ups Full Thread

Topic - ESLs and OTLs - Ralph 12:27:38 01/30/14 (20)

RE: ESLs and OTLs - airheadair 20:18:32 02/02/14 (0)

RE: ESLs and OTLs - Caucasian Blackplate 22:45:25 01/31/14 (12)

RE: ESLs and OTLs - Michael Samra 15:12:35 02/02/14 (0)

Yeah, those 2-ohm ribbon speakers are ideal for an OTL - Lew 08:24:48 02/01/14 (10)

RE: Yeah, those 2-ohm ribbon speakers are ideal for an OTL - morricab 14:32:10 02/03/14 (6)

Moscode, or what? - Lew 12:58:40 02/04/14 (5)

RE: Moscode, or what? - morricab 09:42:50 02/05/14 (4)

RE: Moscode, or what? - Lew 06:48:32 02/06/14 (3)

RE: Moscode, or what? - morricab 05:19:08 02/10/14 (2)

Wow!!! - Lew 10:40:39 02/10/14 (1)

RE: Wow!!! - morricab 13:07:10 02/10/14 (0)

RE: Yeah, those 2-ohm ribbon speakers are ideal for an OTL - Caucasian Blackplate 15:50:05 02/01/14 (2)

What speaker is that? - Lew 10:09:32 02/03/14 (1)

RE: What speaker is that? - Caucasian Blackplate 10:20:42 02/03/14 (0)

Thanks for the analysis - Lew 10:52:13 01/31/14 (0)

RE: ESLs and OTLs - tyu 14:36:50 01/30/14 (4)

RE: ESLs and OTLs - Ralph 08:31:57 01/31/14 (3)

RE: ESLs and OTLs - tyu 10:28:32 01/31/14 (2)

RE: ESLs and OTLs - Ralph 10:51:01 01/31/14 (1)

RE: ESLs and OTLs - Banat 12:35:12 01/31/14 (0)

Follow Ups

RE: ESLs and OTLs - Banat 12:35:12 01/31/14 (0)

RE: ESLs and OTLs

Post a Message!