6 channel hybrid amp project - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Solid State Talk all about solid state amplification.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 20th December 2003, 12:57 AM   #1
diyAudio Member
Join Date: Nov 2003
Location: flyover country
Default 6 channel hybrid amp project

I'm shooting for 200wrms/8 ohms a channel in a 3U rack mount chassis, so space is a consideration. Right now it looks like a 1500VA 120vct toroid transformer with choke input filtering. Due to space limitations, I'm planning to wind my own chokes and have just ordered three '300VA' rated toroid cores from Alpha Core gapped to 1mm that I plan to wind myself. Their prices for cores are very good and they gap them for only a nominal fee. I am considering paralleling each of the two chokes with a film capacitor tuned to 120hz with the choke to boost the impedance and lower the minimum loading required to keep the output voltage from rising to well under the quiescent bias of the six channels outputs (each will use 3 pair of 2SK1530's and 2SJ201's with the input and driver planned to be a 6K11 compactron).

It appears that I'll be running these cores pretty hard at peak power, and having seen another poster in diyaudio claim that he can get 200wrms from an amp using a 60VA toroid transformer in a capacitor input supply, I wouldn't be too surprised if the gapped cores could saturate under very heavy loading. Even though they're not intentionally 'swinging chokes', I was wondering if I might get some of that type of regulation with this filter arrangement. We're probably talking real worst case scenarios here - clipping into 4 ohms on each of the 6 outputs - maybe about 2000 watts rms total, according to my estimates.
  Reply With Quote


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Project Hybrid tube-chipamp vthieu Chip Amps 0 3rd February 2008 08:40 AM
Ariel / ME2 Hybrid for center channel? lester_burman Multi-Way 0 3rd July 2007 05:08 PM
Help wanted for a truly loco project. (A Tube--gainclone hybrid guitar amp!) Spasticteapot Instruments and Amps 33 21st October 2006 09:31 AM
CLS II to hybrid project? Clarkcr Planars & Exotics 8 28th December 2005 09:45 PM
hybrid Amp project nitelite Solid State 2 17th May 2004 06:20 PM

New To Site? Need Help?

All times are GMT. The time now is 09:25 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2