Home OTL Asylum

OTL, Output Transformerless Amplifier User Group.

RE: Addendum

Ralph

I am not a keen small amp believer went it comes to ELS speakers.

As you may well know, more tubes in parallel means lower impedance (if all things remains the same). Even with transformer coupled ones, it makes winding the OPT an easier task.

20kHz is not near high enough. To get really airy highs, a minimum target is 25kHz.

I do not know of any ELS that does not drop its impedance to 1 to 2 Ohms at 20kHz.

Coupled with your (and my) love for zero feedback, small tube amps is but a dream IMO.

Can 1500pF be wound into the secondary of the high frequency transformer? I believe that even 500pF is enough.

Lew, did you measure the Au Transformer secondary winding capacitance?


This post is made possible by the generous support of people like you and our sponsors:
  Parts Connexion  


Follow Ups Full Thread
Follow Ups
  • RE: Addendum - KIS 21:13:55 04/27/12 (0)

FAQ

Post a Message!

Forgot Password?
Moniker (Username):
Password (Optional):
  Remember my Moniker & Password  (What's this?)    Eat Me
E-Mail (Optional):
Subject:
Message:   (Posts are subject to Content Rules)
Optional Link URL:
Optional Link Title:
Optional Image URL:
Upload Image:
E-mail Replies:  Automagically notify you when someone responds.