Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Solid State Talk all about solid state amplification.

Death Of Zen
Death Of Zen
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 22nd August 2006, 08:26 PM   #1
DoomPixie is offline DoomPixie  Wales
diyAudio Member
Join Date: Jun 2005
Location: Aberystwyth / Llanelli (wales)
Send a message via MSN to DoomPixie
Default Death Of Zen

Hi again,
Thought i better make a new topic as i am now runnign the death of zen at higher rail voltages, etc, hopefully more people will read the thread.
I am currently runnign the amplifier from about 34V supply.. and i have managed to get it idling at 1.8A.. This is running an 8Ohm Load at the moment (both my speakers in series.. need to get some new speakers.. mabey try a couple of cheap dual cone car drivers open baffle for a laugh..) Should i be trying for higher Idle current do you think?
The heatsinks i am useing are fan cooled and are MORE than enough with the fans running, infact they run nice and cool with the fans running, but without the fans they heat up pretty fast and i have problems with thermal runaway.. So i want a Circuit that Either senses the current and shuts down the amp or senses the sink temp and shuts down the amp... just incase the fans fail.. any idea's?
Also I have a question about transformer sizeing.. I am currently running it from 2 x 80Va toroids.. each with two 12V secondaries wired in series and then both toroids wired in parallell.. This is only temporary and i am wondering rounghly what size toroid i should buy for the amplifier? should i run each channel from an individual toroid or run them both from a single toroid what would be best? i still have my meter in series with the amplifier and have never seen it drawing more than 1.85A :S is this normal? even playing my bass test CD's at max volume im willing to risk with these speakers..
Thanks in advance,
  Reply With Quote
Old 22nd August 2006, 11:03 PM   #2
bikehorn is offline bikehorn  Canada
diyAudio Member
bikehorn's Avatar
Join Date: Aug 2004
Location: toronto
try this for thermal shutdown: http://sound.westhost.com/project46.htm
  Reply With Quote
Old 22nd August 2006, 11:21 PM   #3
DoomPixie is offline DoomPixie  Wales
diyAudio Member
Join Date: Jun 2005
Location: Aberystwyth / Llanelli (wales)
Send a message via MSN to DoomPixie
Thanks for the link,
The temperature switches on there have given me an idea.. One of my other hobbies is building phase change coolers for computer processors.. I Have a few really neat temperature controllers that I may well be able to set up to shut the power to the amplifier off after it reaches a certain temperature.. The good thing about doing it this way is it would have a temperature readout of the heatsink temperature.. i have one particular controller in mind that has inputs for two sensors so i could monitor both channels individually..

I have lowered the Idle current a little.. its at 1.6A now.. i found that it sounds better like this..

  Reply With Quote


Death Of ZenHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
DOZ - Death of ZEN amp from Rod Elliot hifimaker Pass Labs 26 6th April 2012 06:09 PM
death of zen janey Pass Labs 29 16th September 2009 09:59 PM
The death of Hi-Fi SunRa Everything Else 9 16th October 2008 04:22 AM
Death Magnetic ak_47_boy Music 6 14th October 2008 02:12 PM
DEATH by UPS exurbia Planars & Exotics 10 4th June 2006 12:29 PM

New To Site? Need Help?

All times are GMT. The time now is 11:49 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio