50 Power triode

rick57 · 7th July 2005, 08:46 AM

Who has seme basic info on this tube, in particular typical watts output?

And (my hunch is I will be looking for a while) but does anyone know who may have some to sell/ where to look?

Bas Horneman · 7th July 2005, 09:03 AM

I don't know where to get REAL 50's...but diyhifisupply sells the modern ones.

around 3-4 watts it seems

edl · 7th July 2005, 09:14 AM

wooo! such a nice tube!

karma · 7th July 2005, 01:09 PM

yes mesh-plate is verry nice

rick57 · 7th July 2005, 01:19 PM

Thanks. Is the one you posted of an NOS?
I can’t any TJ datasheets, but requested them of Brian at diyhifisupply.

(OT: I see there is a big $ “300B+ Premium Graphite Plate” they claim: “With 1K5 OPT and 400/120ma, fixed bias you can get a whopping 20+ watts from these: 845 slayer”!

Anyone heard a 50? I read today they sound better than 45s!

Bas Horneman · 7th July 2005, 01:27 PM

Quote:

Thanks. Is the one you posted of an NOS?

Yes.

Quote:

see there is a big $ “300B+ Premium Graphite Plate” they claim: “With 1K5 OPT and 400/120ma

Yea I've been dreaming about them for my One-Electron UBT-1 1k6 OPT.

Quote:

Anyone heard a 50? I read today they sound better than 45s!

I've only heard 300B in my life..never a 2a3,45 or 50

kmtang · 7th July 2005, 02:01 PM

The TJ Full Music tubes are new stocks. They are rather pricy.

If you can find NOS 50's, that would be very good.

I checked the datasheet of 50, the plate resistance is 1.8K which is similar to 45 tube. The output transformer's impedance should be 5K.

Johnny

rick57 · 7th July 2005, 02:17 PM

Based on a comparison (mentioned somewhere on KYW’s website) the 50 can sound better than the 45 (this before the new rather pricey premium mesh plate version), with the power of the 2A3.

Anyone planning to tinker with the TJ 50? KYW?

KYW maybe a premium option for the diyhifisupply Joplin?

kmtang · 7th July 2005, 02:32 PM

Good quality 5K SE OPT is rather hard to find. I bought the Hammond 1628SE OPT for use with my 45 AMP. I found that the frequency response is not flat at all. It has a notch of -6dB at 16kHz. Luckily it still sounds pretty good to my ears.

Johnny

rick57 · 8th July 2005, 01:04 AM

KYW,
(Searching on 50 triode yields a lot of unrelated hits)
Can you give any pointers/ reasons why 50s are harder to implement right, than eg 45s or 2A3s??

Cheers

7th July 2005, 08:46 AM	#1
rick57 diyAudio Member Join Date: Dec 2002 Location: dry ol Melbourne Australia	50 Power triode Who has seme basic info on this tube, in particular typical watts output? And (my hunch is I will be looking for a while) but does anyone know who may have some to sell/ where to look?

7th July 2005, 09:03 AM	#2
Bas Horneman diyAudio Moderator Emeritus Join Date: Apr 2002 Location: The Netherlands Blog Entries: 18	I don't know where to get REAL 50's...but diyhifisupply sells the modern ones. around 3-4 watts it seems __________________ Boatanchor amps forum My "adventures" in audio

7th July 2005, 01:19 PM	#5
rick57 diyAudio Member Join Date: Dec 2002 Location: dry ol Melbourne Australia	datasheets Thanks. Is the one you posted of an NOS? I can’t any TJ datasheets, but requested them of Brian at diyhifisupply. (OT: I see there is a big $ “300B+ Premium Graphite Plate” they claim: “With 1K5 OPT and 400/120ma, fixed bias you can get a whopping 20+ watts from these: 845 slayer”! Anyone heard a 50? I read today they sound better than 45s!

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7th July 2005, 09:14 AM	#3
edl diyAudio Member Join Date: Oct 2004	wooo! such a nice tube!

7th July 2005, 01:09 PM	#4
karma diyAudio Member Join Date: Feb 2003 Location: hamilton,ontario	yes mesh-plate is verry nice

7th July 2005, 02:01 PM	#7
kmtang diyAudio Member Join Date: Nov 2004 Location: Vancouver	The TJ Full Music tubes are new stocks. They are rather pricy. If you can find NOS 50's, that would be very good. I checked the datasheet of 50, the plate resistance is 1.8K which is similar to 45 tube. The output transformer's impedance should be 5K. Johnny

7th July 2005, 02:17 PM	#8
rick57 diyAudio Member Join Date: Dec 2002 Location: dry ol Melbourne Australia	Based on a comparison (mentioned somewhere on KYW’s website) the 50 can sound better than the 45 (this before the new rather pricey premium mesh plate version), with the power of the 2A3. Anyone planning to tinker with the TJ 50? KYW? KYW maybe a premium option for the diyhifisupply Joplin?

7th July 2005, 02:32 PM	#9
kmtang diyAudio Member Join Date: Nov 2004 Location: Vancouver	Good quality 5K SE OPT is rather hard to find. I bought the Hammond 1628SE OPT for use with my 45 AMP. I found that the frequency response is not flat at all. It has a notch of -6dB at 16kHz. Luckily it still sounds pretty good to my ears. Johnny

8th July 2005, 01:04 AM	#10
rick57 diyAudio Member Join Date: Dec 2002 Location: dry ol Melbourne Australia	KYW, (Searching on 50 triode yields a lot of unrelated hits) Can you give any pointers/ reasons why 50s are harder to implement right, than eg 45s or 2A3s?? Cheers

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