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JTM45 Plate impedance ?

 
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LordAlik
Plucker


Joined: 29 Aug 2006
Posts: 2

PostPosted: Tue Aug 29, 2006 3:16 am    Post subject: JTM45 Plate impedance ? Reply with quote

Hi,
could somebody tell which plate-to-plate impedance uses JTM45. Amp has EL34 and GZ34 vacuum rectifier.

I found in Mullard datasheet for EL34 types like 6k, 7k, but in Philips datasheet these values are around 4k, 5k. On http://marstran.com/Wiring%20Diagrams.htm there are OTs for KT66 with plate impedances 6k6, 8k, 9k. I want to my future amp EL34, but I can't determine right plate-to-plate impedance for that valves. Do somebody know?
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Roe
Guitar God


Joined: 21 Mar 2006
Posts: 179
Location: Trondheim, Norway

PostPosted: Fri Sep 01, 2006 8:32 am    Post subject: Reply with quote

as far as I know original radio spares deluxe output transformers were 6,6k. this load works better with kt66s than el34s. for el34s, jtm50 trannys are better. so I'd recommend 3,4k if you're going with el34s.

for info, see the metroboard, the plexipalace, the marstran site and the germino site
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LordAlik
Plucker


Joined: 29 Aug 2006
Posts: 2

PostPosted: Sat Sep 02, 2006 4:40 am    Post subject: Reply with quote

Ok. Thanks
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