Valve amplifier identification

vinnyelectronic · 21st November 2011, 04:29 PM

Hi , Anyone ID this amp for me? I've no idea so far on the manufacturer or the model. Any info appreciated, Vince

kevinkr · 21st November 2011, 04:36 PM

I'm thinking this is a LEAK TL-12 - the very early version, and quite valuable if that is the case.
Edit: No I guess not, but definitely of UK provenance.. The transformers and general layout are wrong, although the construction details look very similar.

SY · 21st November 2011, 04:38 PM

Looks much like a Leak TL-12.

edit- xpost with Kevin. GMTA

GloBug · 21st November 2011, 04:53 PM

Looks like it could be a Allen Organ amp, although usually these are labeled.

DF96 · 21st November 2011, 05:05 PM

Not a TL-12, unless that was made in two different versions with different layout and valves. It doesn't correspond to any of the amps in Stephen Spicer's book. Lineup appears to be EF86, ECC83, 2xKT66, GZ34. Classic 1950's design, though.

PDL · 21st November 2011, 05:15 PM

Not an Allen, made in Great Britain. Tubes have European id's (GZ34 vs 5AR4). Transformers are not potted Acro's. Construction and color does appear similar though.

SY · 21st November 2011, 05:32 PM

Quote:

Originally Posted by DF96

Not a TL-12, unless that was made in two different versions with different layout and valves. It doesn't correspond to any of the amps in Stephen Spicer's book. Lineup appears to be EF86, ECC83, 2xKT66, GZ34. Classic 1950's design, though.

Layout is different, but the TL-12 schematics I dug up were 5-20 with EF86 and ECC83. The gold color and construction style are suggestive.

Leak TL/12 50'th Anniversary

toprepairman · 21st November 2011, 06:45 PM

Never seen one quite like that, has shades of Pamphonic, so could be a special made specifically for the US market?

DF96 · 06:48 PM

According to Spicer, the TL/12 had EF37 and ECC33. Pictures show all valves in one row along the edge of the chassis. The circuit SY linked to appears to show EF36 and ECC33. Note the top cap for the first stage grid.

vinnyelectronic · 21st November 2011, 10:34 PM

Guys, EMI Orthotone STD 373 has been suggested. Attached are pictures from the underside if this helps. Vince

21st November 2011, 04:36 PM	#2
kevinkr diyAudio Moderator Join Date: Sep 2004 Location: Boston, Massachusetts Blog Entries: 6	I'm thinking this is a LEAK TL-12 - the very early version, and quite valuable if that is the case. Edit: No I guess not, but definitely of UK provenance.. The transformers and general layout are wrong, although the construction details look very similar. __________________ www.kta-hifi.net

21st November 2011, 04:38 PM	#3
SY diyAudio Moderator Join Date: Oct 2002 Location: Austin, TX Blog Entries: 1	Looks much like a Leak TL-12. edit- xpost with Kevin. GMTA __________________ “Listening to records is like ****ing a picture of Brigitte Bardot.” - Sergiu Celibidache

21st November 2011, 06:48 PM	#9
DF96 diyAudio Member Join Date: May 2007	According to Spicer, the TL/12 had EF37 and ECC33. Pictures show all valves in one row along the edge of the chassis. The circuit SY linked to appears to show EF36 and ECC33. Note the top cap for the first stage grid. Last edited by DF96; 21st November 2011 at 06:48 PM. Reason: clarify

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21st November 2011, 04:53 PM	#4
GloBug Banned Join Date: Jun 2011	Looks like it could be a Allen Organ amp, although usually these are labeled.

21st November 2011, 05:05 PM	#5
DF96 diyAudio Member Join Date: May 2007	Not a TL-12, unless that was made in two different versions with different layout and valves. It doesn't correspond to any of the amps in Stephen Spicer's book. Lineup appears to be EF86, ECC83, 2xKT66, GZ34. Classic 1950's design, though.

21st November 2011, 05:15 PM	#6
PDL diyAudio Member Join Date: Jan 2010 Location: Minneapolis, Minnesota	Not an Allen, made in Great Britain. Tubes have European id's (GZ34 vs 5AR4). Transformers are not potted Acro's. Construction and color does appear similar though.

21st November 2011, 06:45 PM	#8
toprepairman diyAudio Member Join Date: Nov 2010	Never seen one quite like that, has shades of Pamphonic, so could be a special made specifically for the US market?

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