Foam Core Board Speaker Enclosures? - Page 130 - 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 12th February 2013, 12:32 AM   #1291
diyAudio Member
 
Join Date: Dec 2012
How are they for near-field?

I made my first 20in cornu this weekend and I see what you all mean by you have to stay back a bit...
  Reply With Quote
Old 12th February 2013, 12:59 AM   #1292
diyAudio Member
 
surface tension's Avatar
 
Join Date: Jan 2010
Location: Dallas TX
Quote:
Originally Posted by xrk971 View Post
Surface Tension,
Those look great, so you opted for some pretty thick plywood there. It must give it a substantial feeling and less resonance on the baffle. Are those Vifa's being driven by the tube amp in the picture? What depth are you using on the channels?
X
Thanks xrk, I like the thick baffle for driver mounting, foam works well for the back and spiral. Thick baffle still seems to retain that magic sound on acoustic and vocal. Speakers are about 6.5' apart on center. The back has a piece of Sonic Barrier 3/4" foam 8"x 8" centered behind the driver with a ply strip 18"W x3"H x1/2"D (Gorilla Glued) and a saw tooth hanger. That makes the the speaker 3/4" out from the wall. Moderate stuffing in the channels, heavier stuffing at the exits. Sounds great as a stand alone system, integrates well with sub (PE SUB-1200) on demanding music (this room is big with high ceiling). The amp is Elekit TU 879S with JAN 12AT7WC & stock 6L6GC.

20"x20" with 2 1/2" depth channels

Sorry, no test data here, just ears and lots of
  Reply With Quote
Old 12th February 2013, 02:29 AM   #1293
xrk971 is offline xrk971  United States
diyAudio Member
 
xrk971's Avatar
 
Join Date: Oct 2012
Location: Virginia
Quote:
Originally Posted by recurve99 View Post
How are they for near-field?

I made my first 20in cornu this weekend and I see what you all mean by you have to stay back a bit...
They work well closer than cornu. Near field ? I listen to them about 7 ft away if that is near field. The bass goes up the wall and off ceiling so there are certain locations were room modes reinforce bass. Depends on room.
  Reply With Quote
Old 13th February 2013, 12:04 PM   #1294
diyAudio Member
 
Join Date: Sep 2010
Location: Upplands Väsby (Sweden)
Was bitten by Foam Core bug. So when I was about to start my plans had to change a little ..
This was the drawing on the right side ...
Click the image to open in full size.

On the other side was my drawing ...

Hard at work, better to not look When he's working with the knife
Click the image to open in full size.

Halfway ...
Click the image to open in full size.

\ M
  Reply With Quote
Old 13th February 2013, 04:23 PM   #1295
xrk971 is offline xrk971  United States
diyAudio Member
 
xrk971's Avatar
 
Join Date: Oct 2012
Location: Virginia
what are you making?
  Reply With Quote
Old 14th February 2013, 12:53 PM   #1296
diyAudio Member
 
Join Date: Sep 2010
Location: Upplands Väsby (Sweden)
Quote:
Originally Posted by xrk971 View Post
what are you making?
It's my 6 years old son that is building houses to his cuddly toys.
No speakers yet...
But hi is always making drawings first than cutting and gluing.
We use Pattex Wood Express glue.

This is the final house, I think it looks like the drawing.
No not really done, still missing lights.
Click the image to open in full size.


Click the image to open in full size.

Sorry for the off-topic, but I will try to steal some foam board and build some speakers.
2-way BiB with Aura NS3 and a tweeter from the "speaker" bin.

\M
  Reply With Quote
Old 14th February 2013, 01:03 PM   #1297
Carlp is offline Carlp  United States
diyAudio Member
 
Join Date: May 2006
Location: A New England
Nice!
  Reply With Quote
Old 14th February 2013, 01:55 PM   #1298
xrk971 is offline xrk971  United States
diyAudio Member
 
xrk971's Avatar
 
Join Date: Oct 2012
Location: Virginia
I have to admit that I made houses for my kid's stuffed animals before I ever made speaker.
  Reply With Quote
Old 14th February 2013, 02:18 PM   #1299
bcmbob is offline bcmbob  United States
diyAudio Member
 
Join Date: Dec 2009
Location: Bay City, Michigan
Quote:
Originally Posted by MrMag2001 View Post
Sorry for the off-topic, but I will try to steal some foam board and build some speakers............\M
Sounds to me like you've got your priorities just about perfect.
__________________
Bob M.
"Arrange Whatever Pieces Come Your Way."
  Reply With Quote
Old 14th February 2013, 03:10 PM   #1300
guangui is offline guangui  Puerto Rico
diyAudio Member
 
Join Date: Feb 2013
As luck will have it, I remembered that last year my son's school asked parents to get some sheets of flexi-foam. I didn't know what was flexi-foam and purchased foam core by error. Checked around the house, and I found 5 foam core sheets (Elmer's 3/16" x 20" x 30") in assorted colors, I paid $4.50 each. Time to put them to use, speaker projects.
  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 01:41 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