Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Decware DNA Horn
Decware DNA Horn
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 6th May 2013, 03:11 PM   #21
bcmbob is offline bcmbob  United States
diyAudio Member
 
Join Date: Dec 2009
Location: Bay City, Michigan
OOps - I thought you were suggesting 1/2 material. Do you think the standard thickness is stable enough?
__________________
Bob M.
"Arrange Whatever Pieces Come Your Way."
  Reply With Quote
Old 6th May 2013, 03:16 PM   #22
zobsky is offline zobsky  India
diyAudio Member
 
zobsky's Avatar
 
Join Date: Mar 2002
Location: Dallas, Tx, USA
Is anyone going to build them out of conventional materials (ply / mdf)? I am blessed to own a pair of the recommended TB drivers, but am currently cursed with a bad shoulder so until it heals, I'm in armchair DIY mode.
__________________
"Not everything that can be counted counts, and not everything that counts can be counted." - Albert Einstein
  Reply With Quote
Old 6th May 2013, 03:21 PM   #23
xrk971 is offline xrk971  United States
Got Foam?
diyAudio Member
 
xrk971's Avatar
 
Join Date: Oct 2012
Location: Metro DC area
Decware DNA Horn
Quote:
Originally Posted by bcmbob View Post
OOps - I thought you were suggesting 1/2 material. Do you think the standard thickness is stable enough?
I am sure they will sound better (less body resonance and vibration) with the half inch material. Plus, that stuff is a direct replacement for the half inch plywood so it will sit right on top of the plan as drawn. If you go with the 3/16 in thick stuff, it will be flimsier, but with adequate bracing strips, and perhaps 1/4 in ply or masonite on the front or side panels or both in addition to the foam, it may be just fine. I have lots of the 3/16 in sheets already so I will make it with that. I am curious to see how the HD or Lowes half in thick extruded foam insulation sheathing material works out though. One of those 4x8 sheets costs about $12 as I recall so you can build a few of these.
  Reply With Quote
Old 6th May 2013, 03:24 PM   #24
xrk971 is offline xrk971  United States
Got Foam?
diyAudio Member
 
xrk971's Avatar
 
Join Date: Oct 2012
Location: Metro DC area
Decware DNA Horn
Quote:
Originally Posted by zobsky View Post
Is anyone going to build them out of conventional materials (ply / mdf)? I am blessed to own a pair of the recommended TB drivers, but am currently cursed with a bad shoulder so until it heals, I'm in armchair DIY mode.
An injured shoulder is a good reason to try out making stuff with foam core as all you need to hold is a razor blade and ruler! That 5 in TB W5-1880 is a heavy driver though so you will need to double-up or triple-ply the foam core on the baffle if you do. The bass performance due to the horn will be just as good as making out of wood/ply/mdf - no sawdust and no power tool needed.
  Reply With Quote
Old 6th May 2013, 03:24 PM   #25
bcmbob is offline bcmbob  United States
diyAudio Member
 
Join Date: Dec 2009
Location: Bay City, Michigan
This one -right?
__________________
Bob M.
"Arrange Whatever Pieces Come Your Way."
  Reply With Quote
Old 6th May 2013, 03:28 PM   #26
xrk971 is offline xrk971  United States
Got Foam?
diyAudio Member
 
xrk971's Avatar
 
Join Date: Oct 2012
Location: Metro DC area
Decware DNA Horn
Bob,
That's it - note it is actually 0.75 in thick even though called half inch. Go figure. You will have to adjust plan as needed to compensate for extra thickness. The stuff feels like egg carton foam with nice closed cells. You will have a pink cabinet. Girls will like it Nothing a roller of wall paint or wall paper can't fix.
  Reply With Quote
Old 6th May 2013, 03:32 PM   #27
zobsky is offline zobsky  India
diyAudio Member
 
zobsky's Avatar
 
Join Date: Mar 2002
Location: Dallas, Tx, USA
Quote:
Originally Posted by xrk971 View Post
Bob,
That's it - note it is actually 0.75 in thick even though called half inch. Go figure. You will have to adjust plan as needed to compensate for extra thickness. The stuff feels like egg carton foam with nice closed cells. You will have a pink cabinet. Girls will like it Nothing a roller of wall paint or wall paper can't fix.
FWIW, Member kenpeter and I screwed around with styrofoam smithhorns a few years back. See Styrofoam Smith Horn
__________________
"Not everything that can be counted counts, and not everything that counts can be counted." - Albert Einstein
  Reply With Quote
Old 6th May 2013, 03:35 PM   #28
bcmbob is offline bcmbob  United States
diyAudio Member
 
Join Date: Dec 2009
Location: Bay City, Michigan
zobsky - Just what I need - project #116a

I'm off to the Depot.....

EDIT: Replied to an order confirmation email from Adam at Madisound that included a link to this project. Hope that doesn't push up the price.
__________________
Bob M.
"Arrange Whatever Pieces Come Your Way."

Last edited by bcmbob; 6th May 2013 at 03:42 PM.
  Reply With Quote
Old 6th May 2013, 06:52 PM   #29
chrisb is offline chrisb
diyAudio Member
 
Join Date: Aug 2002
Location: victoria BC
Quote:
Originally Posted by faithintruth View Post
I have the plans for this speaker and there aren't any suggestions of lining/stuffing the horn path. I suspect like other horns, the chamber behind the driver can get some stuffing and the inside of the folds can be lined with felt. I would like to hear from someone who built this so I think I'll check out Steve's site and look at the support forum.

I wasn't aware that Steve or Bob Z offer / authorize release of the plans for this design - if not, I'd be very wary of anything second guesses / reverse engineered from a a website sketch up drawing.


edit: OOPs, I see they do
__________________
like my mind, this space intentionally blank

Last edited by chrisb; 6th May 2013 at 06:55 PM.
  Reply With Quote
Old 6th May 2013, 07:10 PM   #30
zobsky is offline zobsky  India
diyAudio Member
 
zobsky's Avatar
 
Join Date: Mar 2002
Location: Dallas, Tx, USA
Quote:
Originally Posted by chrisb View Post
I wasn't aware that Steve or Bob Z offer / authorize release of the plans for this design - if not, I'd be very wary of anything second guesses / reverse engineered from a a website sketch up drawing.


edit: OOPs, I see they do
The plans (of which I own a copy) are available for purchase. I have no idea what the built product sounds like (yet). Looks like a BVR - horn hybrid.
__________________
"Not everything that can be counted counts, and not everything that counts can be counted." - Albert Einstein
  Reply With Quote

Reply


Decware DNA HornHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Decware Corner Horn plans for Fostex FE167e vaughn Swap Meet 2 17th April 2012 11:39 PM
FS: Fostex FE206E (Decware modified) backloaded horn with Karlson Slot $299 bbaker6212 Swap Meet 4 24th September 2007 04:34 PM
McCormack DNA-500 one channel out kaboom Solid State 12 20th June 2006 01:41 PM
FS: Wicked One bass horn (decware design) cm961 Swap Meet 0 11th August 2003 03:17 PM
Decware DIY Bandpass Horn subs Will Subwoofers 2 15th October 2001 10:14 AM


New To Site? Need Help?

All times are GMT. The time now is 06:06 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki