AR 2ax tweeter - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way

Multi-Way Conventional loudspeakers with crossovers

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
Reply
 
Thread Tools Search this Thread
Old 1st March 2013, 11:22 AM   #1
iso is offline iso  Finland
diyAudio Member
 
Join Date: Aug 2010
Default AR 2ax tweeter

Does anybody know if the late production (1970s) AR-2ax tweeter was ferrofluid cooled? As far as I remember when AR-7 was discontiuned and AR-7x was introduced, the tweeter was converted to use ferrofluid.

Information about possible use of ferrofluid in AR mid domes is also appriciated.

Best Regards

Kimmo
  Reply With Quote
Old 1st March 2013, 11:37 AM   #2
diyAudio Member
 
Join Date: Sep 2006
Location: New England
Your chances of getting a good answer to your question would increase greatly, if you take your question to classicspeakerpages.net discussion forum.

The Classic Speaker Pages Discussion Forums
__________________
"It's all about the music!"
  Reply With Quote
Old 1st March 2013, 06:34 PM   #3
system7 is offline system7  United Kingdom
diyAudio Member
 
system7's Avatar
 
Join Date: Aug 2008
Generally speaking, ferrofluid, which is a simple mixture of oil and ferrite iron oxide particles along with a chemical to bind them, is best applied to tweeters. It tends to shake off and go flying in all directions with lower frequency units.

It has the benefit of damping the tweeter Fs resonance well and improves cooling.

Most of its frequency response effects occur at low frequencies around 1.5-3kHz where it lowers output by about 6dB. It has little effect at high frequencies.

After about twenty years the oil dries out and it turns to sticky brown gunge which just wrecks the tweeter. You could clean it off with tissue and apply some fresh oil bought on eBay or such if the tweeter can be disassembled, but USUALLY it's "game over", time to buy new tweeters.
__________________
Well, there it is! Best regards from Steve in Portsmouth, UK.
  Reply With Quote

Reply


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
ar turntable arteta23 Analogue Source 8 11th April 2011 07:21 PM
Three AR-XAs hatrack71 Swap Meet 0 18th September 2010 03:12 PM
Ar Mst eta_beta_60 Multi-Way 0 22nd June 2008 03:26 PM
AR.com Speakers BR549 Multi-Way 3 26th August 2007 11:36 PM
AR.com fi-guy Multi-Way 33 8th April 2005 09:29 PM


New To Site? Need Help?

All times are GMT. The time now is 01:52 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2