46 tube user

9900778 · 26th May 2005, 04:06 PM

anybody has use #46 tubes??
is it better sound performance than 45 tubes??
It is worth to try??

SY · 26th May 2005, 04:48 PM

I don't think they're interchangeable.

Giaime · 26th May 2005, 04:53 PM

Instead I find on the ned many cheap 47s, is there someone that has used them? Maybe for a SE?

amperex · 27th May 2005, 01:47 AM

The 46 are regarded as a great driver tube. With the G2 connected to the plate, they operate Class A. I suspect the 46 would sound good as an output tube. I also guess the 45 might sound a little better, but at $50+ each for NOS, I would try that 46 tube.

audiousername · 27th May 2005, 04:54 AM

The '46 while triode strapped has been used by a few people as an output valve by some people - doing a Google search turns up some schematics.

Triode strapped, at 250V_a and 22mA, into 6400 ohms, it will give around 1.25W. Not quite the same as a '45, but somewhat similar.

Bas Horneman · 27th May 2005, 08:06 AM

Gary Pimm has made a PP with the 47

http://home.pacifier.com/~gpimm/47.htm

Quote:

Instead I find on the ned many cheap 47s

Where? Where?

planet10 · 27th May 2005, 09:56 AM

wasn't there also a simple 47 SE in a recent audioXpress -- i went thru my tube collection and came up with a single example.... now if i could figure a use for all the 28 (or were they 26s -- time for bed

) i have.

dave

gerryc · 28th May 2005, 03:42 AM

Quote:

Originally posted by 9900778
anybody has use #46 tubes??
is it better sound performance than 45 tubes??
It is worth to try??

Yes, absolutely worth a try. A couple of years ago I threw together a single channel (triode strapped) 46-based SE amp. Used a 6SL7 as a driver. I experimented with both classic grounded cathode and SRPP for the 6SL7 driver. Sounded a little different but I can't say definitely what I preferred. I also just used whatever junk PP output transformer was on the chassis I had (from Eric Barbour's idea for Single-Ended Glory for Under $100 GA 1997 Vol7 Num3). Ran the 46 at about 250 volts and 25ma.

I never built a "nice" version with two channels since I wanted to pursue a higher power design. But it definitely sounded nice even with one of my speakers which are something less than 90dB efficient. But definitely only enough power for a small room.

gerry

Datubie · 30th May 2005, 11:51 AM

Shhhhhh..... don't let the secret out!

26th May 2005, 04:06 PM	#1
9900778 diyAudio Member Join Date: May 2005 Location: hong kong	46 tube user anybody has use #46 tubes?? is it better sound performance than 45 tubes?? It is worth to try?? __________________ wah

26th May 2005, 04:48 PM	#2
SY diyAudio Moderator Join Date: Oct 2002 Location: Chicagoland Blog Entries: 1	I don't think they're interchangeable. __________________ If there's a sucker born every minute, where do the rest of them come from?

27th May 2005, 09:56 AM	#7
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 5	wasn't there also a simple 47 SE in a recent audioXpress -- i went thru my tube collection and came up with a single example.... now if i could figure a use for all the 28 (or were they 26s -- time for bed ) i have. dave __________________ community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

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26th May 2005, 04:53 PM	#3
Giaime diyAudio Member Join Date: Oct 2004	Instead I find on the ned many cheap 47s, is there someone that has used them? Maybe for a SE?

27th May 2005, 01:47 AM	#4
amperex diyAudio Member Join Date: Feb 2005 Location: MI	The 46 are regarded as a great driver tube. With the G2 connected to the plate, they operate Class A. I suspect the 46 would sound good as an output tube. I also guess the 45 might sound a little better, but at $50+ each for NOS, I would try that 46 tube.

30th May 2005, 11:51 AM	#9
Datubie diyAudio Member Join Date: May 2005 Location: Bucks County, PA	Shhhhhh..... don't let the secret out!

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