In Reply to: RE: I'm thinking that this amp was not class A or anywhere near. posted by Lew on January 28, 2014 at 08:23:27:
Hi Lew,
I am quite aware that done properly direct drive OTL is the best way to drive ESLs. However, I have found that they are not all completely stable into those kinds of loads.
For example, I built a pair of Transcendent Sound Beast monoblocks and after completing the build and having it double checked by an EE friend, I hooked them up to my Acoustats and at anything beyond a whisper the DC offset started swinging back and forth wildly and the Whub whub whub sound from the speakers, indicating that the amps were oscillating and unstable into the Spectra 2200s load.
The Silvawelds were not actually unstable but it seems clear to me that they were not remaining well balanced under dynamic conditions, which definitely would increase distortion and it was audible.
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Follow Ups
- RE: I'm thinking that this amp was not class A or anywhere near. - morricab 01:04:19 01/30/14 (18)
- I don't doubt the truth of what you say,... - Lew 06:55:45 01/30/14 (17)
- RE: I don't doubt the truth of what you say,... - morricab 14:39:43 02/03/14 (16)
- RE: I don't doubt the truth of what you say,... - Lew 06:50:40 02/04/14 (15)
- RE: I don't doubt the truth of what you say,... - morricab 05:20:01 02/10/14 (14)
- OT comment on Silvaweld phono stage - Lew 12:11:22 02/12/14 (13)
- RE: OT comment on Silvaweld phono stage - airheadair 20:22:13 02/23/14 (0)
- RE: OT comment on Silvaweld phono stage - morricab 01:12:02 02/13/14 (11)
- RE: OT comment on Silvaweld phono stage - Lew 10:13:34 02/13/14 (10)
- RE: OT comment on Silvaweld phono stage - morricab 02:06:33 02/14/14 (9)
- RE: OT comment on Silvaweld phono stage - Lew 07:41:25 02/14/14 (8)
- RE: OT comment on Silvaweld phono stage - morricab 13:17:56 02/15/14 (7)
- Can you elaborate further? - Lew 10:25:49 02/19/14 (6)
- RE: Can you elaborate further? - morricab 00:25:08 02/21/14 (5)
- 650 vs 550 - Lew 10:50:26 02/21/14 (4)
- RE: 650 vs 550 - morricab 11:38:12 02/21/14 (3)
- MC capability? - Lew 07:09:29 02/24/14 (2)
- RE: MC capability? - morricab 06:25:41 02/26/14 (1)
- RE: MC capability? - Lew 16:51:58 02/26/14 (0)