Home OTL Asylum

OTL, Output Transformerless Amplifier User Group.

[ Follow Ups ] [ Post Followup ] Thread: [ Display  All  Email ] [ OTL Asylum ]
[ Alert Moderator ]

RE: I'm thinking that this amp was not class A or anywhere near.

Hi Lew,
I am quite aware that done properly direct drive OTL is the best way to drive ESLs. However, I have found that they are not all completely stable into those kinds of loads.

For example, I built a pair of Transcendent Sound Beast monoblocks and after completing the build and having it double checked by an EE friend, I hooked them up to my Acoustats and at anything beyond a whisper the DC offset started swinging back and forth wildly and the Whub whub whub sound from the speakers, indicating that the amps were oscillating and unstable into the Spectra 2200s load.

The Silvawelds were not actually unstable but it seems clear to me that they were not remaining well balanced under dynamic conditions, which definitely would increase distortion and it was audible.

This post is made possible by the generous support of people like you and our sponsors:
  Atma-Sphere Music Systems, Inc.  

Follow Ups Full Thread
Follow Ups
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.

[ Top Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2024, Audio Asylum, all rights reserved ]
[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]