Opposite moduli expoy composite - 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 26th August 2006, 09:23 AM   #1
diyAudio Member
 
Join Date: Nov 2003
Default Opposite moduli expoy composite

Hello,
According to Hajo Prodan, who gave this name to an epoxy, sand and rubber mix, this composite seems very promising
Please refer to:
Diyaudio The Paulinator's post
SPEAKER BUILDER 5/1996 [Aug 1996] (v.17#5) pg. 42
Added Info SPEAKER BUILDER 2/1997 [Mar 1997] (v.18#2) pg. 53

The problem: the right granulation grade is sold by tons

The rubber granules should be 4-10x smaller than sand particules. Mr Prodan was lucky, as he was living next to a tyre recycle plant .
Has anyone succeded getting some mesh 80 (granules with 0.2 mm diameter) crumb rubber ?

For the moment, I could order EPDM grabules in 30 mesh grade (0.5 mm), from Melos GmbH. This woud necessitate sand particules not smaller than 2mm. Hajo Prodan seen to have used it to 3mm sand particules. I found quartz sand (0.7-1.2mm mix) at Swiss Composite (huge catalog )

Any input welcome. Please, contact me for any info.

Best Regards,
Alain
  Reply With Quote
Old 29th August 2006, 09:57 PM   #2
diyAudio Member
 
Join Date: Aug 2006
Default Re: Opposite moduli expoy composite

Quote:
Originally posted by Alain Favret
[B]The problem: the right granulation grade is sold by tons
Can we say "mass loading"
  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
composite to XLR Skoda_101 Analog Line Level 2 15th March 2006 09:50 AM
Composite ICs 00940 Chip Amps 3 18th December 2005 06:52 AM
dipole sub H-Frame, phase or opposite phase ? mbon Multi-Way 6 19th June 2004 09:36 PM
Picture Request of Bottom (Opposite Side) of CMoy neueziel Solid State 6 5th June 2004 10:28 PM


New To Site? Need Help?

All times are GMT. The time now is 11:31 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