RE: What is the "sound" of microphonic tubes?

Posted by Awe-d-o-file (D) on October 26, 2014 at 16:07:06

In Reply to: What is the "sound" of microphonic tubes? posted by Nickel Core on October 26, 2014 at 13:20:04:

As you may know now there are levels of microphonic tubes. Like Al said depending on the type of tube and where it is in the circuit they can cause feedback (like from a PA system -squeal) you have tubes now that when you tap on them they make audible noise in the speaker; both are types of microphonic behavior.

When you change a tube it almost always sounds different obviously the same brand/type/run of tube will sound most similar. I would remove ANY tube with any type of microphonic behavior. The sound you get with the replacement will have many variables as you probably know.

In the end you'll decide the cost/benefit factor yourself and weigh all the data. I would replace any microphonic tube and the louder you play your system the more important it is IMO. I'd be less likely to replace a microphonic tube in a headphone only setup. The sound won't get back to the microphonc tube in a headphone system.

Like a turntable susceptible to feedback there are other [potential] ways than just the sound from the speakers feeding back to affect a microphonic tube and its system. Good luck.

ET
ET

"If at first you don't succeed, keep on sucking till you do suck seed" - Curly Howard 1936

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Follow Ups Full Thread

Topic - What is the "sound" of microphonic tubes? - Nickel Core 13:20:04 10/26/14 (18)

In addition.... - wheezer 11:07:51 11/03/14 (0)

RE: What is the "sound" of microphonic tubes? - Jim McShane 10:48:44 10/27/14 (0)

Basically vibration inside a hollow vacumn. The tail wags the dog! - mobiasloop 07:58:41 10/27/14 (0)

Depends what makes them microphonic - andy evans 01:56:26 10/27/14 (2)

The problem of course is... - Nickel Core 04:30:52 10/27/14 (1)

RE: The problem of course is... - Thomas Mayer 02:30:29 10/28/14 (0)

RE: What is the "sound" of microphonic tubes? - Ray Moth 16:36:02 10/26/14 (4)

RE: What is the "sound" of microphonic tubes? - deathtube 667 18:09:00 10/26/14 (2)

RE: What is the "sound" of microphonic tubes? - Tre' 18:55:36 10/26/14 (1)

RE: What is the "sound" of microphonic tubes? - deathtube 667 20:25:01 10/26/14 (0)

Awesome (nt) - Chip647 17:29:36 10/26/14 (0)

RE: What is the "sound" of microphonic tubes? - Tre' 16:26:02 10/26/14 (0)

RE: What is the "sound" of microphonic tubes? - Awe-d-o-file 16:07:06 10/26/14 (0)

if it's bad enough, they can actually cause feedback NT - Alpha Al 15:34:21 10/26/14 (0)

RE: What is the "sound" of microphonic tubes? - DAK 14:00:19 10/26/14 (0)

When I have gotten rid of my very microphonic tubes I hear an ease to the music - richardl 13:53:10 10/26/14 (2)

RE: When I have gotten rid of my very microphonic tubes I hear an ease to the music - Sherwood Forest 14:22:56 10/29/14 (1)

When they ring on and on, it is pretty bad - richardl 15:08:20 10/29/14 (0)

Follow Ups

RE: What is the "sound" of microphonic tubes? - Awe-d-o-file 16:07:06 10/26/14 (0)

RE: What is the "sound" of microphonic tubes?

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