EL152, GU50 and EL156

eeyore · 6th March 2010, 09:55 PM

Hi, I am thinking of building an amp using EL152, GU50 or EL156. Anyone have experience with the tubes that can share their experiences and thoughts? Sound, operating points, etc?

Zen Mod · 6th March 2010, 10:11 PM

Wavebourn

also - look here : http://www.jogis-roehrenbude.de/

eeyore · 7th March 2010, 12:58 AM

My German is not so good at all. I found the page detailing history of EL34 and some Russian tubes. But nothing specific on the 152, 156 or the 50s. From what little I read on Jacmusic, the 152 and 50 are the same tube but with different bases. Both designed for Military use. The 156 seems to be the super version of the EL34. If that is the case what is the difference between the EL152/GM50 and the EL156?

tympani1d · 06:02 AM

Google Translate
Seite 1 Startseite

Yep, try to get Wavebourn to answer here or PM him. I bug him all the time!!!
I want to retube Quicksiver 8417 mono blocks with the GU-50 so maybe we can get some good erudite chatter on here!!!

tubesteve · 7th March 2010, 08:39 AM

EL152 is actually the LS50 in a new envelope after the war. in data its same as GU50 or FU50. The EL156 is a complete different thing to deal with

eeyore · 7th March 2010, 08:59 AM

Then the question is how much different is the EL152/GM50 to the EL156? I read that they are all improve on the EL34? Is that the case?

tubesteve · 7th March 2010, 09:40 AM

thats not the case: LS50 (data same as GU50) was developped 1940 in Germany as a RF /Audio modulator purpose for the airforce, than later changed the glass housing. EL34 ( = 6CA7) was developped by Philips in the mid 1950s and the EL156 later by Telefunken.
Pls. dont mix them all up.

kstagger · 11th March 2010, 07:46 PM

I built a pair of SE EL156 monoblocks (Ultralinear, EF86 driver tube, Hammond iron) and they were one of my better tube amps. I used the Shuguang version which has an octal socket.

The amps were eventually converted to run 6550s as the guy I sold the amps to had a big stash of (real) Tungsols.

Svein_B · 11th March 2010, 07:59 PM

I was surprised to find an EL156 amp in current production.
Sold out of Canada:

MP-401 EL156 Integrated Amplifier
Musical Paradise MP-401 EL156 KT88 EL34 Tube Amplifier on eBay

15W SE (might even be true!). Nice looking, at a reasonable price.

Octal version of EL156, plug compatible with EL34/KT88.

(I have not figured out why there are 3 input/driver tubes per channel)

Svein

Wavebourn · 11th March 2010, 08:10 PM

Here you go: www.wavebourn.com • View topic - Pyramid-VII: home stereo vacuum tube amp

6th March 2010, 09:55 PM	#1
eeyore diyAudio Member Join Date: Aug 2005	EL152, GU50 and EL156 Hi, I am thinking of building an amp using EL152, GU50 or EL156. Anyone have experience with the tubes that can share their experiences and thoughts? Sound, operating points, etc? __________________ DF http://diy-audio-blog.blogspot.com

6th March 2010, 10:11 PM	#2
Zen Mod diyAudio Member Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain	Wavebourn also - look here : http://www.jogis-roehrenbude.de/ __________________ my Papa is smarter than your Nelson ! tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; BAF Forum & Gallery;I'm dumb

7th March 2010, 12:58 AM	#3
eeyore diyAudio Member Join Date: Aug 2005	My German is not so good at all. I found the page detailing history of EL34 and some Russian tubes. But nothing specific on the 152, 156 or the 50s. From what little I read on Jacmusic, the 152 and 50 are the same tube but with different bases. Both designed for Military use. The 156 seems to be the super version of the EL34. If that is the case what is the difference between the EL152/GM50 and the EL156? __________________ DF http://diy-audio-blog.blogspot.com

7th March 2010, 05:59 AM	#4
tympani1d diyAudio Member Join Date: Dec 2009 Location: Northern Illinois USA	Google Translate Seite 1 Startseite Yep, try to get Wavebourn to answer here or PM him. I bug him all the time!!! I want to retube Quicksiver 8417 mono blocks with the GU-50 so maybe we can get some good erudite chatter on here!!! __________________ I think; therefore will NOT be Politically Correct. Last edited by tympani1d; 7th March 2010 at 06:02 AM. Reason: typos!!! drat this english stuff is tricky!!!

7th March 2010, 08:39 AM	#5
tubesteve diyAudio Member Join Date: May 2009 Location: since 1998 in China as an electronic consulting design and testing engineer	El152 EL152 is actually the LS50 in a new envelope after the war. in data its same as GU50 or FU50. The EL156 is a complete different thing to deal with __________________ The amount of humans is increasing, but the amount of available intelligence remains a constant.

7th March 2010, 08:59 AM	#6
eeyore diyAudio Member Join Date: Aug 2005	Then the question is how much different is the EL152/GM50 to the EL156? I read that they are all improve on the EL34? Is that the case? __________________ DF http://diy-audio-blog.blogspot.com

7th March 2010, 09:40 AM	#7
tubesteve diyAudio Member Join Date: May 2009 Location: since 1998 in China as an electronic consulting design and testing engineer	thats not the case: LS50 (data same as GU50) was developped 1940 in Germany as a RF /Audio modulator purpose for the airforce, than later changed the glass housing. EL34 ( = 6CA7) was developped by Philips in the mid 1950s and the EL156 later by Telefunken. Pls. dont mix them all up. __________________ The amount of humans is increasing, but the amount of available intelligence remains a constant.

11th March 2010, 07:46 PM	#8
kstagger diyAudio Member Join Date: Dec 2003 Location: Grand Rapids	I built a pair of SE EL156 monoblocks (Ultralinear, EF86 driver tube, Hammond iron) and they were one of my better tube amps. I used the Shuguang version which has an octal socket. The amps were eventually converted to run 6550s as the guy I sold the amps to had a big stash of (real) Tungsols.

11th March 2010, 07:59 PM	#9
Svein_B diyAudio Member Join Date: Oct 2005	I was surprised to find an EL156 amp in current production. Sold out of Canada: MP-401 EL156 Integrated Amplifier Musical Paradise MP-401 EL156 KT88 EL34 Tube Amplifier on eBay 15W SE (might even be true!). Nice looking, at a reasonable price. Octal version of EL156, plug compatible with EL34/KT88. (I have not figured out why there are 3 input/driver tubes per channel) Svein

11th March 2010, 08:10 PM	#10
Wavebourn diyAudio Member Join Date: Sep 2006 Location: Pleasant Hill, CA	Here you go: www.wavebourn.com • View topic - Pyramid-VII: home stereo vacuum tube amp __________________ The devil is not so terrible as his mathematical model! Wavebourn: We Create Creativity!

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