EL12N in JCM800 clone

davorin · 5th September 2011, 06:11 PM

Just finished clone of MARSHALL JCM800 (model 2204 with small modification) with 2xEL12N in output. Guitar sound is bether than any amp that I build before (more than 400 amps for guitar!)! First I tray with 12AX7 on first position (normal, ECC83 Philips/1977Year/NOS) with perfect sound, but have too much gain, and than try 12AY7 (Electro-Harmonics; new production) with less gain. EL12N are NOS tubes from Germany (DDR; RFT production; NOS from 1959 year!).

davorin · 16th September 2011, 01:34 PM

Yesterday I put amp in box with speaker (Celestion G12Vintage-60W/8 Ohms). Output power is >40W in normal pentod-mode and ~12W in triode-mode (screen to plate via 470 Ohms/2W).

HollowState · 16th September 2011, 05:35 PM

VERY nice job!

davorin · 16th September 2011, 08:54 PM

Thanks!

Funker · 18th September 2011, 04:42 PM

Hi Davorin,
nice work. Respect! In Germany we would say: Geiles Gerät!

I own loads of these nice output valves. I also made a lot of guitar amps, but I never tried these valves. I should try them the next turn.

regards

davorin · 18th September 2011, 05:38 PM

Thanks! First amp with EL12(Telefunken) for guitar, I buid ~1974-'75 (SE-ClassA-8W output). I remember perfect sound of guitar from that amp. Many year I can't bay EL12 (or EL12N and EL12SPEC) anywere, but few monts ago I bay 14 tubes EL12N (from USA, hi!) and decided to build bigger and stronger amp.

davorin · 24th October 2011, 01:24 PM

I receive few asks for shematic. Here are (sory for hand drowing):

Funker · 24th October 2011, 03:33 PM

Hi Davorin,
thanks a lot for the drawings!

regards
Wolfgang

DF6ZC

16th September 2011, 05:35 PM	#3
HollowState diyAudio Member Join Date: Aug 2006 Location: Taxland, New Jersey	VERY nice job! __________________ "The supercomputer is technologically impossible. It would take all of the water that flows over Niagara Falls to cool the heat generated by the number of vacuum tubes required." ~ Professor of Electrical Engineering, New York University

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
New Project (The best JCM800 SS emulation)?	mensur	Instruments and Amps	3	11th March 2008 10:41 AM
JCM800 Mod	iggy80fr	Instruments and Amps	1	6th September 2006 09:47 PM
clone AN/K	ccopp	Multi-Way	0	9th July 2006 08:24 AM
Question regarding ProAc 2.5 Clone and Tempo 2 Clone	zoooh	Multi-Way	5	11th March 2003 08:19 PM
JCM800 as a poweramp, the signal level	mdream	Tubes / Valves	4	9th December 2002 01:45 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read

16th September 2011, 08:54 PM	#4
davorin diyAudio Member Join Date: Aug 2005 Location: Zadar, Croatia	Thanks!

18th September 2011, 04:42 PM	#5
Funker diyAudio Member Join Date: Feb 2009 Location: Hamburg, Germany	Hi Davorin, nice work. Respect! In Germany we would say: Geiles Gerät! I own loads of these nice output valves. I also made a lot of guitar amps, but I never tried these valves. I should try them the next turn. regards

18th September 2011, 05:38 PM	#6
davorin diyAudio Member Join Date: Aug 2005 Location: Zadar, Croatia	Thanks! First amp with EL12(Telefunken) for guitar, I buid ~1974-'75 (SE-ClassA-8W output). I remember perfect sound of guitar from that amp. Many year I can't bay EL12 (or EL12N and EL12SPEC) anywere, but few monts ago I bay 14 tubes EL12N (from USA, hi!) and decided to build bigger and stronger amp.

24th October 2011, 03:33 PM	#8
Funker diyAudio Member Join Date: Feb 2009 Location: Hamburg, Germany	Hi Davorin, thanks a lot for the drawings! regards Wolfgang DF6ZC

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)