Foam Core Board Speaker Enclosures? - Page 154 - 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 24th March 2013, 05:11 PM   #1531
xrk971 is offline xrk971  United States
diyAudio Member
 
xrk971's Avatar
 
Join Date: Oct 2012
Location: Virginia
Update to above post. Please use this link to get good mp3's.

TPA3118D2

Sorry about that.
  Reply With Quote
Old 24th March 2013, 10:08 PM   #1532
diyAudio Member
 
Join Date: Jun 2004
Location: Indiana
I thought about doing a foam core amplifier but I don't think it would hold up to the heat from the rectifier and power tubes.

mike
__________________
If We The People refuse to hear the truth we will be ruled by liars.
  Reply With Quote
Old 25th March 2013, 01:07 AM   #1533
xrk971 is offline xrk971  United States
diyAudio Member
 
xrk971's Avatar
 
Join Date: Oct 2012
Location: Virginia
Quote:
Originally Posted by mashaffer View Post
I thought about doing a foam core amplifier but I don't think it would hold up to the heat from the rectifier and power tubes.

mike
Au contraire, if you use the phenolic (bakelite) foam with fire retardent paper face....
  Reply With Quote
Old 25th March 2013, 10:26 AM   #1534
bcmbob is offline bcmbob  United States
diyAudio Member
 
Join Date: Dec 2009
Location: Bay City, Michigan
Quote:
Originally Posted by mashaffer View Post
I thought about doing a foam core amplifier but I don't think it would hold up to the heat from the rectifier and power tubes.

mike
Did a home brew project last week that worked quite well. I had a bunch of leftovers from some auto body repair. I used two different fiberglass fabrics, the resin mix mashed and clamped between to pieces of aluminum (could also use smooth plywood) covered with old fashioned wax paper.

A little Bondo, some sandpaper, black spray paint and Voila! - Works as good as perf board. Not exactly foam board but strong, DIY and in my case, free
Attached Images
File Type: jpg HB1.jpg (94.0 KB, 258 views)
File Type: jpg HB2.jpg (106.6 KB, 256 views)
File Type: jpg HB3.jpg (78.4 KB, 248 views)
__________________
Bob M.
"Arrange Whatever Pieces Come Your Way."

Last edited by bcmbob; 25th March 2013 at 10:45 AM.
  Reply With Quote
Old 25th March 2013, 12:46 PM   #1535
xrk971 is offline xrk971  United States
diyAudio Member
 
xrk971's Avatar
 
Join Date: Oct 2012
Location: Virginia
Quote:
Originally Posted by bcmbob View Post
Did a home brew project last week that worked quite well. I had a bunch of leftovers from some auto body repair. I used two different fiberglass fabrics, the resin mix mashed and clamped between to pieces of aluminum (could also use smooth plywood) covered with old fashioned wax paper.

A little Bondo, some sandpaper, black spray paint and Voila! - Works as good as perf board. Not exactly foam board but strong, DIY and in my case, free
Nice work Bob. You know, if you wanted to make the board stiffer without adding weight, next time wrap the fiberglass around the foam core board to give it extra spacing to put the fiberglass farther away from the center of mass and this stiffens it a lot - like a surfboard. And it would be a heatproof amplifier foam core board.
  Reply With Quote
Old 25th March 2013, 01:29 PM   #1536
bcmbob is offline bcmbob  United States
diyAudio Member
 
Join Date: Dec 2009
Location: Bay City, Michigan
Thanks, The possibilities for custom uses are vast. We might even imagine a combination of fiberglass and foam core board in some slick new cornu designs.
Attached Images
File Type: jpg 2.jpg (201.8 KB, 251 views)
__________________
Bob M.
"Arrange Whatever Pieces Come Your Way."
  Reply With Quote
Old 27th March 2013, 07:26 PM   #1537
xrk971 is offline xrk971  United States
diyAudio Member
 
xrk971's Avatar
 
Join Date: Oct 2012
Location: Virginia
Default My first Foam Core showing

We had some family come from out of town to visit yesterday and this is the first time anyone outside besides you folks in this forum has seen or heard my foam core creations. When they looked at the speakers and picked them up to feel how light they were they were quite incredulous that it would sound good. I showed them the new 'All Foam Core' audio system including the 30 watt/ch foam core amp paired with the Vifa-powered FH3i's. When I pushed 'play' on the CD carousel they were completely blown away by how good it sounded. They couldn't believe the bass coming from a 3.5 in driver, and the detail and imaging, if you have never experienced full range point sources - was understandably, impressive to the uninitiated. Anyhow, it was fun to 'surprise' people.

Click the image to open in full size.
  Reply With Quote
Old 27th March 2013, 07:29 PM   #1538
6L6 is offline 6L6  United States
diyAudio Member
 
6L6's Avatar
 
Join Date: Oct 2010
Location: Denver, Colorado
Ok, now that is completely awesome!!!!!!


  Reply With Quote
Old 27th March 2013, 07:51 PM   #1539
bcmbob is offline bcmbob  United States
diyAudio Member
 
Join Date: Dec 2009
Location: Bay City, Michigan
I think I can see a foam core CD player just off in the distance.

Very Nice.
__________________
Bob M.
"Arrange Whatever Pieces Come Your Way."
  Reply With Quote
Old 27th March 2013, 07:59 PM   #1540
KLBIrd is offline KLBIrd  United States
diyAudio Member
 
KLBIrd's Avatar
 
Join Date: Jan 2009
Location: Lincoln, Missouri
Send a message via Skype™ to KLBIrd
That is what it is all about guys. Seeing their eyes light up when they hear what you have created.Most don't have a clue to terms like Qts, Fs Vas ot the other words in our audio soup, but they do know good sound when they hear it. Congratulations!
  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 03:28 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