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KT120 triode operation single stage amp

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inertial

Member
Joined 2004
hi i need consulting to projecta serious curious ampo

input: one for 10 times transformer lundhasl, one kt 120 triode cathoiode bypass poliproylene, output transformer lundhal about 3 k ohm.
Chocke inductive PSU with poly caps 100 microF for channel.
Power transformer: one for 400 VA.
Expedcted 15 w class A2, with damping factoer of about 4.
cabinet : tin search of aggod one for a few bucks , if yopu know one pleas e tell me,

do you think it casn be work?
thanks to all expert for precious suggestion .

by , inertial
 
Bas Horneman

Bas Horneman

Ex-Moderator
Joined 2002
basaudio.wordpress.com/
wouldn't there be a limit to how hard you can drive a low signal input/step up trafo
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Yes. But depending on his setup it could be usable. For instance. Kees Soeters uses a Lundahl 1:8 stepup in his 300b amplifier.

Burmester or something preamp with low output impedance -> 1:8 transformer -> 27 -> 300b. And that works fine.

The KT120 is easier to drive than a 300b. So it might just work.
 
Tesla88

Tesla88

Member
Joined 2011
It's a Pentode, but OP want to use it as triode , aniway triode = less gain , so I don't know if a x10 x Former (model not mentioned ) woul be enough to drive a Kt120 at full , and yes you need a good preamp to drive a step up transformer , something able to drive a 600 ohm load ...
 
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