|
Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
|
|
|
Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
|
In Reply to: Truth is ... posted by Naz on July 10, 2006 at 20:17:03:
If you have a class A amp with no feedback, distortion is a function of signal level and since most listening is done at small (average) signal levels the sound will be nice and clean. But with a class AB amp the feedback loop introduces a distortion that is not signal dependent and might hurt low level detail.If my thinking is correct it would imply that the class A amp would measure best at low level but the class AB amp would measure better at higher output (perhaps best right before class B). Maybe someone has the ability to measure and report on this.
Throw in the facts that pentodes are not as tolerant of load variation (and we have a big one when we transistion to class B)and the fact that I for one can't think of a class A pentode amp with global feedback and it makes it even harder to say just what impact global feedback alone has and how much it is a mixture of design compromises that seem to be included with global feedback amps in general.
Russ
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- Tell me what you think - Russ57 08:57:34 07/11/06 (4)
- Re: Tell me what you think - Naz 01:27:42 07/12/06 (0)
- Re: Tell me what you think - drlowmu 21:13:15 07/12/06 (2)
- Re: Tell me what you think - Naz 21:00:48 07/13/06 (1)
- Re: Tell me what you think - drlowmu 07:12:10 07/14/06 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2025, Audio Asylum, all rights reserved ]