Re: Excessive gain in OTL preamp

OTL Asylum

OTL, Output Transformerless Amplifier User Group.

In Reply to: Re: Excessive gain in OTL preamp posted by Lew on April 3, 2007 at 09:53:19:

I have no idea. Contact mikhail Rottenberg at info@siglepower.com. Or look at www.singlepower.com.
The simple part of the tube swapping is that he makes tube adaptors with the octal base for 3-4 different pin sets. It only takes double triodes as inputs and outputs, but I assure you it will take low and high voltage 6SN7s, 5687s, and 6BL7GTAs and others as outputs. For inputs: 6Au,Av,At7, 5965, 6414, 7n7 E180cc, 5751 (with some outputs), and on and on. I think it is a cathode follower, but i don't know how he avoids the output transformer.
My MPX3 Slam SE is mainly a headamp, but can work as a preamp.
Anyway, I tried a 7N7 driving VT-231s. That is as low gain as you can get and it still has excessive gain

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

Parts Connexion

Follow Ups Full Thread

Topic - Excessive gain in OTL preamp - Frihed89 01:37:14 04/01/07 (4)

Re: Excessive gain in OTL preamp - Lew 09:53:19 04/03/07 (3)

Re: Excessive gain in OTL preamp - Frihed89 11:06:32 04/03/07 (2)

Re: Excessive gain in OTL preamp - Lew 12:36:32 04/03/07 (1)

Thank you. I will - Frihed89 21:34:32 04/03/07 (0)

Follow Ups

Re: Excessive gain in OTL preamp - Frihed89 11:06:32 04/03/07 (2)

Re: Excessive gain in OTL preamp - Lew 12:36:32 04/03/07 (1)

Thank you. I will - Frihed89 21:34:32 04/03/07 (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.

To view your new posting or follow-up, click on the RELOAD or REFRESH button on your browser.