50 Type Tube

jcmusic · 9th March 2013, 02:37 PM

Anyone here use or heard these tubes, I am told they rival the 45 type tube but with more power???

the_manta · 9th March 2013, 05:16 PM

Interesting topic. I thought about a 50 amplifier as well. The new production SG50 is a really fine tube ans just round ~50$ (Shuguang SG-50 new Hi-Fi vacuum tube)

Problem is...sadly...the max. grid resistor is only 10k. So forget about about a nice old globe triode driving it directly. Either interstage or Cathode/Source/Emitter follower (=Power Drive).
A good high-gm pentode, a mosfet and a 50. All directly coupled. Would yield a nice, unusual amplifier. Far away from the mainstream "Sakuma Style".

jcmusic · 9th March 2013, 05:39 PM

Thought I would share this with you since you were kind enough to reply.

vega65 · 9th March 2013, 07:50 PM

Jcmusic
I have started to plan a 50 se these days
can you share some info about your setup?

Best regards
Vegard

gamve · 10th March 2013, 07:08 AM

Here is one of my 50 Monoblocks.
Best 3 watts I've ever heard in my system.
U52 Gold Lion rectifier, Ecc32 Driver, RCA 50 (large foil getters)

9th March 2013, 02:37 PM	#1
jcmusic diyAudio Member Join Date: Dec 2010	50 Type Tube Anyone here use or heard these tubes, I am told they rival the 45 type tube but with more power???

9th March 2013, 05:16 PM	#2
the_manta diyAudio Member Join Date: Nov 2006 Location: Munich, Bavaria	Interesting topic. I thought about a 50 amplifier as well. The new production SG50 is a really fine tube ans just round ~50$ (Shuguang SG-50 new Hi-Fi vacuum tube) Problem is...sadly...the max. grid resistor is only 10k. So forget about about a nice old globe triode driving it directly. Either interstage or Cathode/Source/Emitter follower (=Power Drive). A good high-gm pentode, a mosfet and a 50. All directly coupled. Would yield a nice, unusual amplifier. Far away from the mainstream "Sakuma Style". __________________ Терпенье и труд все перетрут

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9th March 2013, 07:50 PM	#4
vega65 diyAudio Member Join Date: Nov 2007	Jcmusic I have started to plan a 50 se these days can you share some info about your setup? Best regards Vegard

10th March 2013, 07:08 AM	#5
gamve diyAudio Member Join Date: Feb 2013	Here is one of my 50 Monoblocks. Best 3 watts I've ever heard in my system. U52 Gold Lion rectifier, Ecc32 Driver, RCA 50 (large foil getters)