Selecting Output Transformers for WOT Line Preamp

K&K Audio / Lundahl Transformers

Welcome! Need support, you got it. Or share youe ideas and experiences.

I want to upgrade my WE437a WOT preamp (running at 25ma). I want wide frequency response and low output impedence as well as balanced outputs. I have considered the following Lundahl transformers:
(1) LL1671/30ma (Alt Q connection, L=35H, 4:1, no freq. spec.);
(2) LL1689/18ma (Alt P connection, L=90H, 18:4, no freq. spec.) to be gapped at 25 or 30 ma; or
(3) LL1660/18ma (Alt Q connection, L=100H, 4.5:1, freq. 11Hz-35kHz +-1db) to be gapped at 25 or 30 ma.
Grateful if anybody advise which of the above is the best for me? Or is there any more suitable counterpart? For options (2) and (3), should I specify the gap at 25 ma or 30 ma? What's the difference?
Any advice or information is appreciated. Thanks in advance.

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

Schiit Audio

Topic - Selecting Output Transformers for WOT Line Preamp - Snoopyma 11:35:37 06/27/05 (4)

Re: Selecting Output Transformers for WOT Line Preamp - KevinC 20:26:23 06/28/05 (3)

Re: Selecting Output Transformers for WOT Line Preamp - Snoopyma 23:34:00 06/29/05 (2)

Re: Selecting Output Transformers for WOT Line Preamp - KevinC 12:53:46 07/01/05 (1)

Re: Selecting Output Transformers for WOT Line Preamp - Snoopyma 07:56:46 07/05/05 (0)

You can not post to an archived thread.