Foam Core Board Speaker Enclosures? - Page 91 - diyAudio
Go Back   Home > Forums > Loudspeakers > Full Range

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 22nd December 2012, 12:30 AM   #901
xrk971 is offline xrk971  United States
diyAudio Member
 
xrk971's Avatar
 
Join Date: Oct 2012
Location: Virginia
Dave Brubeck, Bela Fleck, Sade are all great. The Cornu's are designed for jazz. Miles Davis.... it's all good.
  Reply With Quote
Old 22nd December 2012, 12:39 AM   #902
bcmbob is offline bcmbob  United States
diyAudio Member
 
Join Date: Dec 2009
Location: Bay City, Michigan
You guys are after my own heart. Glad to know there are still a bunch of jazz dudes out there.

Cal, I sent Paul K. a link. Would love to have him try a pair. He leans toward TLs but I bet he would be impressed.
__________________
Bob M.
"Arrange Whatever Pieces Come Your Way."
  Reply With Quote
Old 22nd December 2012, 03:28 AM   #903
Illusus is offline Illusus  Canada
diyAudio Member
 
Illusus's Avatar
 
Join Date: Sep 2002
Location: Prairie Wasteland, Canada
Neat thread. It's exactly the kind of project that made me fall in love with DIY HiFi.

Hmmm, I have a CNC and a few tons of bendy ply at the shop. Maybe I can sneak some of these into my work day.
__________________
Fighting the program since 1976.
  Reply With Quote
Old 22nd December 2012, 09:15 AM   #904
diyAudio Member
 
Join Date: Dec 2010
Location: Coffs Harbour NSW 2450
i just bought a set of stupidly cheap computer speakers, $19 for a 3" (sub) and two 2" satellite speakers, amped. it sounds kinda ok, clear and with a bit of bass. im thinking about the cornu, but a bit different.

i like things to be symmetrical so, because i want just one spiral, thats not symmetrical. so keep eyes out next month for my (still planning) next diy foamcore project.
__________________
  Reply With Quote
Old 22nd December 2012, 09:29 AM   #905
xrk971 is offline xrk971  United States
diyAudio Member
 
xrk971's Avatar
 
Join Date: Oct 2012
Location: Virginia
Quote:
Originally Posted by klampykixx View Post
i just bought a set of stupidly cheap computer speakers, $19 for a 3" (sub) and two 2" satellite speakers, amped. it sounds kinda ok, clear and with a bit of bass. im thinking about the cornu, but a bit different.

i like things to be symmetrical so, because i want just one spiral, thats not symmetrical. so keep eyes out next month for my (still planning) next diy foamcore project.
Cheap pc speakers is what I used for my 14 inch cornu (2 in drivers). You could put a two layer spiral which is kind of like one spiral, just thicker...
Do you have a photo?
  Reply With Quote
Old 22nd December 2012, 10:04 AM   #906
diyAudio Member
 
Join Date: Dec 2010
Location: Coffs Harbour NSW 2450
dont mind the finger prints. i have already had it open to suss out whats inside.. lol

put a bit of wadding in the "sub" too. softened the midbass a smidgen.

Click the image to open in full size.
__________________
  Reply With Quote
Old 22nd December 2012, 11:57 AM   #907
xrk971 is offline xrk971  United States
diyAudio Member
 
xrk971's Avatar
 
Join Date: Oct 2012
Location: Virginia
Klampy,
Those look perfect for a project like this. I have always wanted to try one of this concave aluminum drivers. Use the amp that comes with it too.
Good luck!
  Reply With Quote
Old 22nd December 2012, 04:24 PM   #908
xrk971 is offline xrk971  United States
diyAudio Member
 
xrk971's Avatar
 
Join Date: Oct 2012
Location: Virginia
Quote:
Originally Posted by bcmbob View Post
You guys are after my own heart. Glad to know there are still a bunch of jazz dudes out there.

Cal, I sent Paul K. a link. Would love to have him try a pair. He leans toward TLs but I bet he would be impressed.
Bob,
If you have Brubeck's 'Ode to a Cowboy', it sounds really nice in the cornu. I am thinking about building either a 24 incher like yours or a full size 28 incher like Cal's next. I like the size of the 24 incher, is there enough room in the driver cavity for a 4.0 inch cutout? I am thinking the w4 bamboo cone driver might be nice. The 24 incher lets me get smaller sheets of plywood, and is a more manageable size. 28 inches starts to move lower on the WAF scale.
  Reply With Quote
Old 22nd December 2012, 04:30 PM   #909
Speakerholic
diyAudio Moderator
 
Cal Weldon's Avatar
 
Join Date: Jan 2004
Location: Near Vancouver
Quote:
Originally Posted by Illusus View Post
Maybe I can sneak some of these into my work day.
You're exactly what we need in this thread. I would love to see these in bendy ply.
__________________
Next stop: Margaritaville
Some of Cal's stuff | Cal Weldon Consulting
  Reply With Quote
Old 22nd December 2012, 06:08 PM   #910
bcmbob is offline bcmbob  United States
diyAudio Member
 
Join Date: Dec 2009
Location: Bay City, Michigan
Quote:
Originally Posted by xrk971 View Post
Bob,
If you have Brubeck's 'Ode to a Cowboy', it sounds really nice in the cornu. I am thinking about building either a 24 incher like yours or a full size 28 incher like Cal's next. I like the size of the 24 incher, is there enough room in the driver cavity for a 4.0 inch cutout? I am thinking the w4 bamboo cone driver might be nice. The 24 incher lets me get smaller sheets of plywood, and is a more manageable size. 28 inches starts to move lower on the WAF scale.
I'll look for that piece in the collection.

I'm finding program selection is critical in the big orchestral pieces. These seem to be sensitive to what the A&R guy did with the mids in the recording. Found a couple that sound good but trios and string quartets sound fantastic on these.

Your plan for a 4" driver in a 24" cornu is probably dependent on the size of the magnet. Maybe pulling back that first throat divider might not cause a major problem with the internal dynamics.
Attached Images
File Type: jpg 20121222_135351.jpg (124.3 KB, 366 views)
__________________
Bob M.
"Arrange Whatever Pieces Come Your Way."
  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
Speaker damping: Foam or expanding foam akunec Multi-Way 4 11th February 2014 01:14 AM
Replace speaker foam with this odd material? flyingsquirrelman Subwoofers 7 25th July 2010 01:32 PM
concrete board for enclosures? alandarkdale Multi-Way 6 31st March 2007 08:35 AM
Foam core construction for subwoofers morbo Subwoofers 19 30th August 2005 08:09 PM
speaker foam dave k Multi-Way 2 24th June 2003 05:05 AM


New To Site? Need Help?

All times are GMT. The time now is 08:04 AM.


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