RE: "a more linear driver tube"...

Posted by Deke609 (A) on June 16, 2020 at 06:05:11

In Reply to: RE: "a more linear driver tube"... posted by Paul Joppa on June 15, 2020 at 08:55:37:

Like Ivan303, I also think there's something special going on with the 5670. I am probably one of the few outside of Bottlehead who has heard the Stereomour with the premium iron that comes with BH's Kaiju 300B and Monomour 2A3 amps. I installed my Kajiu iron in a Stereomour. It appreciably improved the sound (to my ears), but the Stereomour still fell considerably short of the Kaiju. Other than the driver tubes (12AT7 in the Stereomour, 5670 in the Kaiju), the amps were essentially identical (besides the output tubes -- but I used very nice EML tubes in both). In fact, the Stereomour with Kaiju iron arguably had an advantage: installed in the Stereomour, the Kaiju plate choke could be used full winding (I think 60H?), whereas in the Kaiju only a partial winding is used (40H?).

Which leads me to think that it's the 5670 that makes (much of) the difference. The only other potential explanation I can think of is the spacious layout of the Kaiju - perhaps greater distances between iron and other components is a contributing factor.

I suspect that there's something not captured by distortion measurements going on here. The Kaiju just sounded "bigger and better".

I would imagine that the Monomours, which take advantage of the full plate choke winding and use 5670 drivers, sound very good indeed.

cheers, Derek

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Follow Ups Full Thread

Topic - How does the Stereomour compare to other 2a3/45 designs? Nt - BenE 09:11:06 06/03/20 (23)

Not sure anyone answered your question. - jusbe 05:18:51 06/21/20 (1)

RE: Not sure anyone answered your question. - BenE 10:05:43 06/23/20 (0)

RE: Stereomour vs other 2a3/45 designs? - Frank Mena 14:27:58 06/11/20 (10)

If I were going to ask the question... - Ivan303 15:39:55 06/13/20 (9)

RE: If I were going to ask the question... - Paul Joppa 20:37:48 06/13/20 (8)

RE: "a more linear driver tube"... - Ivan303 06:24:01 06/15/20 (7)

RE: "a more linear driver tube"... - Paul Joppa 08:55:37 06/15/20 (6)

RE: "a more linear driver tube"... - Deke609 06:05:11 06/16/20 (2)

Thanks... - Ivan303 07:26:02 06/16/20 (1)

RE: Thanks... - Paul Joppa 08:35:13 06/16/20 (0)

Only heard the 5670 version... - Ivan303 16:35:45 06/15/20 (2)

RE: Only heard the 5670 version... - Paul Joppa 21:22:40 06/15/20 (1)

Sadly no 5670's in the tube stash... - Ivan303 18:59:28 06/18/20 (0)

Could be very good... - Ivan303 19:57:24 06/03/20 (9)

RE: Could be very good... - Paul Joppa 08:01:32 06/04/20 (8)

Do tell... - Ivan303 06:25:38 06/06/20 (7)

RE: Do tell... - Paul Joppa 22:17:29 06/06/20 (6)

RE: why not outsource overseas to increase margin ? - deathtube 667 08:02:45 06/10/20 (5)

RE: why not outsource overseas to increase margin ? - Paul Joppa 09:54:30 06/10/20 (4)

RE: why not outsource overseas to increase margin ? - deathtube 667 03:12:30 06/11/20 (3)

RE: why not outsource overseas to increase margin ? - GEO 15:19:15 06/13/20 (2)

RE: why not outsource overseas to increase margin ? - deathtube 667 17:37:39 06/18/20 (1)

RE: why not outsource overseas to increase margin ? - GEO 16:37:08 06/20/20 (0)

Follow Ups

RE: "a more linear driver tube"... - Deke609 06:05:11 06/16/20 (2)

Thanks... - Ivan303 07:26:02 06/16/20 (1)

RE: Thanks... - Paul Joppa 08:35:13 06/16/20 (0)

RE: "a more linear driver tube"...

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