In Reply to: RE: To the Bored posted by shane. on September 14, 2017 at 20:27:42:
You hear it as sounding worse for what ever reason. But I keep saying this. The job of the amplifier is to preserve the signal with the sole exception of gain. Anything else added is distortion and therefore a defect.I don't see why this is so hard to understand. If you want true to the source reproduction, you can't add or subtract anything from the signal except simple gain. And furthermore that gain must be absolutely linear across the entire frequency range. Not much of a problem in audio amplifiers, but a serious problem in earlier video and RF amplifiers which I have a great deal of design experience. Video OPAMPS were a godsend for this problem. Look up differential phase and gain. You won't ever hear that discussed in audio circles.
Do you know the history of the 300B. The reason it is a very low distortion tube? That's got nothing to do with HiFi audio. It had to do with RF frequency multiplexing in the early telephone system. Distortion in a frequency multiplexed signal can make it completely unusable.
Edits: 09/14/17 09/14/17 09/14/17
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Follow Ups
- No you think lower THD sounds worse. - gusser 21:00:02 09/14/17 (20)
- RE: No you think lower THD sounds worse. - shane. 21:20:17 09/14/17 (19)
- "Too many variables ... " - Stephen R 04:50:57 09/15/17 (1)
- RE: "Too many variables ... " - shane. 19:17:31 09/16/17 (0)
- So you like the sound of higher distortion? - gusser 21:29:30 09/14/17 (16)
- You could not validate Shane's point better if you tried. nt. - 91derlust 00:57:05 09/15/17 (3)
- RE: You could not validate Shane's point better if you tried. nt. - shane. 01:01:39 09/15/17 (2)
- RE: You could not validate Shane's point better if you tried. nt. - 91derlust 01:26:28 09/15/17 (1)
- RE: You could not validate Shane's point better if you tried. nt. - shane. 19:19:30 09/16/17 (0)
- Response to your question. - shane. 22:18:45 09/14/17 (0)
- RE: So you like the sound of higher distortion? - Ivan303 21:43:25 09/14/17 (0)
- Did I say that? - or are you just struggling to be rational? - shane. 21:40:46 09/14/17 (9)
- RE: Did I say that? - or are you just struggling to be rational? - gusser 22:56:30 09/14/17 (1)
- RE: Did I say that? - or are you just struggling to be rational? - shane. 22:58:31 09/14/17 (0)
- RE: Did I say that? - or are you just struggling to be rational? - Tre' 22:53:21 09/14/17 (6)
- One more thing about it - sser2 12:55:35 09/15/17 (2)
- Feedback turns positive? - gusser 18:11:19 09/17/17 (0)
- +1 (nt) - Tre' 18:22:01 09/15/17 (0)
- RE: Did I say that? - or are you just struggling to be rational? - shane. 22:57:43 09/14/17 (2)
- "THD is simply the reverse of DHT" - sser2 22:01:40 09/15/17 (1)
- RE: "THD is simply the reverse of DHT" - shane. 19:24:06 09/16/17 (0)