8 ohms is easy for a 6AS7-based OTL with only 8 power tubes-

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Topic - Why are OTL amps not so popular - JoeRB 03:27:56 07/21/12 (70)

Thanks to all who have participated thus far. - Ralph 14:06:06 07/24/12 (0)

Marketing, plain and simple - Ralph 14:03:38 07/24/12 (8)

RE: Marketing, plain and simple - Tre' 10:54:47 07/25/12 (6)

RE: Marketing, plain and simple - Ralph 13:43:11 07/25/12 (5)

RE: Marketing, plain and simple - Tre' 14:53:45 07/25/12 (4)

class A - Ralph 16:01:31 07/25/12 (3)

RE: class A - Tre' 16:59:47 07/25/12 (2)

RE: class A - Ralph 09:45:06 07/26/12 (1)

Got it. Thanks. (nt) - Tre' 17:01:40 07/26/12 (0)

RE: Marketing, plain and simple - Paul Joppa 21:16:29 07/24/12 (0)

RE: Why are OTL amps not so popular - Lew 08:31:45 07/24/12 (2)

"No single technology in audio is perfect" - mikeyb 09:59:07 07/24/12 (1)

I forgot.. - Lew 10:20:44 07/24/12 (0)

RE: Why are OTL amps not so popular - 6AS7_6SN7 02:21:02 07/24/12 (11)

RE: hum is a non-issue. - Ralph 13:47:28 07/24/12 (10)

RE: hum is a non-issue. - 6AS7_6SN7 02:26:19 07/25/12 (9)

You don't need expensive power supplies - Ralph 08:17:25 07/25/12 (7)

RE: You don't need expensive power supplies - 6AS7_6SN7 09:35:57 07/25/12 (6)

Yes, I can see that in a totem pole, - Ralph 10:59:23 07/25/12 (5)

RE: Yes, I can see that in a totem pole, - 6AS7_6SN7 23:41:55 07/25/12 (4)

Did you forget about the EL509/PL509? - Ralph 09:58:04 07/26/12 (3)

"Futterman legacy"? - Lew 10:42:26 07/27/12 (2)

RE: "Futterman legacy"? - Ralph 14:33:07 07/27/12 (1)

RE: "Futterman legacy"? - Lew 16:38:19 07/27/12 (0)

RE: hum is a non-issue. - Lew 08:13:53 07/25/12 (0)

Been there, done that - grhughes 13:36:43 07/23/12 (0)

RE: Why are OTL amps not so popular - richardl 11:00:17 07/23/12 (6)

RE: Why are OTL amps not so popular - cpotl 10:40:29 07/24/12 (5)

RE: Why are OTL amps not so popular - richardl 11:46:12 07/24/12 (4)

8 ohms is easy for a 6AS7-based OTL with only 8 power tubes- - Ralph 13:45:48 07/24/12 (3)

I agree - richardl 10:57:28 07/25/12 (2)

RE: I agree - Ralph 13:52:49 07/25/12 (1)

Thanks, I did not know that. - richardl 13:29:31 07/26/12 (0)

No-one mentioned their biggest weakness ... - Naz 05:39:56 07/23/12 (13)

-And they still haven't- OTLs don't need feedback! - Ralph 13:43:49 07/24/12 (12)

No feedback? - Paul Joppa 20:58:37 07/24/12 (5)

RE: No feedback? - Ralph 08:20:09 07/25/12 (4)

RE: No feedback? - Tre' 12:58:05 07/25/12 (3)

RE: No feedback? - PaulF70 17:16:20 06/04/16 (0)

Correct. - Ralph 13:45:40 07/25/12 (1)

RE: Correct. - Paul Joppa 23:39:57 07/25/12 (0)

RE: -And they still haven't- OTLs don't need feedback! - Naz 16:35:22 07/24/12 (5)

the effect of feedback on output impedance - Ralph 08:09:51 07/25/12 (4)

RE: the effect of feedback on output impedance - Naz 17:36:16 07/27/12 (3)

RE: the effect of feedback on output impedance - Ralph 13:34:44 07/30/12 (2)

7242 for higher mu? - Lew 12:48:49 07/31/12 (1)

RE: 7242 for higher mu? - Ralph 13:03:52 07/31/12 (0)

RE: Why are OTL amps not so popular - hahax@verizon.net 18:38:07 07/21/12 (0)

They are not uncommon -- using SS! [NT] - Ray Moth 16:58:11 07/21/12 (0)

RE: Why are OTL amps not so popular - Blackdog 15:44:07 07/21/12 (0)

Failure prone - gusser 15:42:25 07/21/12 (1)

Not failure prone any more than any other design - Ralph 13:40:16 07/24/12 (0)

RE: Why are OTL amps not so popular - Lee of Omaha 15:11:13 07/21/12 (13)

RE: Why are OTL amps not so popular - TimFox 12:42:45 07/26/12 (0)

This is almost entirely bogus. - Ralph 13:36:54 07/24/12 (0)

RE: Why are OTL amps not so popular - drlowmu 19:01:01 07/21/12 (10)

RE: Why are OTL amps not so popular - Lew 08:35:09 07/24/12 (0)

RE: Why are OTL amps not so popular - dave slagle 13:20:50 07/22/12 (8)

Yes, but - Tre' 13:07:28 07/25/12 (0)

RE: Why are OTL amps not so popular - Ray Moth 15:30:31 07/24/12 (6)

RE: Why are OTL amps not so popular - drlowmu 22:15:09 07/24/12 (5)

Like I said, Jeff -- - Ray Moth 14:19:14 07/25/12 (0)

Because others did. - Ralph 08:24:28 07/25/12 (3)

RE: Because others did. - drlowmu 16:15:50 07/25/12 (2)

Robert Fulton - Ralph 09:30:34 07/26/12 (1)

RE: Robert Fulton - drlowmu 10:51:04 07/26/12 (0)

They typically require a ton of 6AS7 or Sweep tubes for relatively low power - Chris O 08:26:27 07/21/12 (0)

RE: Why are OTL amps not so popular - Neff 04:00:05 07/21/12 (2)

RE: Why are OTL amps not so popular - 6AS7_6SN7 02:37:07 07/24/12 (0)

RE: Why are OTL amps not so popular - TheBob 08:43:01 07/21/12 (0)

Follow Ups

8 ohms is easy for a 6AS7-based OTL with only 8 power tubes- - Ralph 13:45:48 07/24/12 (3)

I agree - richardl 10:57:28 07/25/12 (2)

RE: I agree - Ralph 13:52:49 07/25/12 (1)

Thanks, I did not know that. - richardl 13:29:31 07/26/12 (0)

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