Anyone built the Decca Corner Horn (TQWP)? - Page 3 - 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 11th March 2011, 04:06 AM   #21
diyAudio Member
 
grindstone's Avatar
 
Join Date: Jun 2007
Location: GMT-6
Default verified head still hurts

thanks dave, drboar, all. lotta complicated interactions...eek. hmmm. if the port is cut in the front instead of the bottom, maybe it gets closer to freddy's wheelhouse yet another great circle of well-coupled acoustic reactances...reflections at all the non-smooth transitions, pipe modes. yet another fascinating indulgence in a realm packed with the things. cacophony of honking exceeds my grasp to hold in my attention. seems a job for summer, power tools, and beer. still numb, and still grateful for the scans and the sharing.
  Reply With Quote
Old 27th August 2012, 09:26 AM   #22
DrBoar is offline DrBoar  Sweden
diyAudio Member
 
DrBoar's Avatar
 
Join Date: Apr 2003
Location: Stockholm
OK now it links to the images so the page does not overload.

http://i360.photobucket.com/albums/o...DeccaHorn1.jpg

http://i360.photobucket.com/albums/o...DeccaHorn2.jpg

http://i360.photobucket.com/albums/o...DeccaHorn3.jpg

http://i360.photobucket.com/albums/o...DeccaHorn4.jpg
  Reply With Quote
Old 30th August 2012, 12:49 AM   #23
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Thanx Dr. I cleaned those up and made a pdf

http://p10hifi.net/forum/RWest-Build...orner-Horn.pdf

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 30th August 2012, 05:14 AM   #24
diyAudio Member
 
devilsindetails's Avatar
 
Join Date: May 2011
Location: 100th Meridian
Thanks fellows....love this kind of archival info.....
__________________
"A problem left to itself dries up or goes rotten. But fertilize a problem with a solution--you'll hatch out dozens." (N.F.Simpson)
  Reply With Quote
Old 30th August 2012, 08:56 AM   #25
Colin is offline Colin  United Kingdom
diyAudio Member
 
Join Date: Aug 2003
HFN produced a more modern variant in the 1980s which was designed to be placed alongside a sofa - the idea being they acted as side tables either end of the sofa and you sat opposite them. No corners involved and the drivers and horn mouth faced forwards, so the entire enclosure was longer than tall (a corner horn laid on its back).

It used KEF drivers and had a mechanical filter part-way along to damp the driver. This was a plain partition with a grid of holes drilled in it.

I think Ralph West commented on it, mentioning that the drivers required damping in the horn, compared to older drivers.

Sorry, no idea of the article date or title except that they were referred to as 'Chairsides' and another variation was produced using a single driver Elac.
  Reply With Quote
Old 31st August 2012, 06:03 PM   #26
DrBoar is offline DrBoar  Sweden
diyAudio Member
 
DrBoar's Avatar
 
Join Date: Apr 2003
Location: Stockholm
I have that issue, sadly due to spousal pressure the HFN &RR are stored in the attic and its hard to get to them. Late 70s or early 80s. I do not think HFN&RR have had much of DIY in the last 20 years. But I think they are a different kettle of tea with those forward facing drivers. The Decca Corner Horn is more rellated to the ACE horn, a Voigt pipe with upward facing driver and the Rogers horn from the 50s that had a upward facing Lowther unit. This was more of a true horn but with a unusally large chamber and a styrofoam membrane across the mouth of the horn, as I reacall.

HFN &RR also had the Paraline were the driver faced the wall, the long enclosure was either standing or lying sideways with quite long legs underneath them.

Then there was the Basset a single fold Voigt pipe using four 8" Elec drivers and a damping consisting of a back of muslin stuffed with wood shavings! This was used as a subwoofer with an active crossover.
  Reply With Quote
Old 1st September 2012, 01:17 PM   #27
dai is offline dai  Wales
diyAudio Member
 
Join Date: Apr 2007
Location: algarve portugal
Send a message via Skype™ to dai
I have the origonal booklet FIVE SPEAKERS published by miles henslow which
has tricolumn decca corner 12 inch decca corner paraline and corner concrete
horn designs The only one I have built is the corner horn but this was over 40 years ago
If anyone would like to see any of the articles I will try to post them
All the designs except the corner horn were based on voigt s quarter wave design

regards richie
  Reply With Quote
Old 2nd September 2012, 02:13 AM   #28
diyAudio Member
 
devilsindetails's Avatar
 
Join Date: May 2011
Location: 100th Meridian
Quote:
Originally Posted by dai View Post
I have the origonal booklet FIVE SPEAKERS published by miles henslow which
has tricolumn decca corner 12 inch decca corner paraline and corner concrete
horn designs The only one I have built is the corner horn but this was over 40 years ago
If anyone would like to see any of the articles I will try to post them
All the designs except the corner horn were based on voigt s quarter wave design

regards richie

Hi Richie...I would love to see them!
__________________
"A problem left to itself dries up or goes rotten. But fertilize a problem with a solution--you'll hatch out dozens." (N.F.Simpson)
  Reply With Quote
Old 2nd September 2012, 09:16 AM   #29
dai is offline dai  Wales
diyAudio Member
 
Join Date: Apr 2007
Location: algarve portugal
Send a message via Skype™ to dai
Hi devilsindetails
Is there any particulare design you are interested in because there are 78 pages and I
do not know about the leagality of posting the whole thing and whether DIY AUDIO
permits this If you would like a copy of the whole book and no one else is interested
I could photo copy it and post it to you otherwise perhaps one of the moderators
could give me some guidance
richie
  Reply With Quote
Old 2nd September 2012, 04:43 PM   #30
diyAudio Member
 
devilsindetails's Avatar
 
Join Date: May 2011
Location: 100th Meridian
Quote:
Originally Posted by dai View Post
Hi devilsindetails
Is there any particulare design you are interested in because there are 78 pages and I
do not know about the leagality of posting the whole thing and whether DIY AUDIO
permits this If you would like a copy of the whole book and no one else is interested
I could photo copy it and post it to you otherwise perhaps one of the moderators
could give me some guidance
richie
Hi Richard...Yes that would be a daunting task, indeed...let's see if there is any other interest first...with so much to do and so little time for all of us to do it in... unless the broader DIY community is interested I wouldn't want to monopolize your time. My interest in the designs is more general.

Perhaps after I've done some more research on this article and the designs I can contact you regarding a specific query. Thanks so much for the kind offer...much appreciated
__________________
"A problem left to itself dries up or goes rotten. But fertilize a problem with a solution--you'll hatch out dozens." (N.F.Simpson)
  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
Why could corner horn not be this simple? mashaffer Subwoofers 16 5th August 2014 07:55 AM
Corner Horn tinitus Multi-Way 30 13th December 2006 11:10 PM
TQWP/horn - is it any good? Nuuk Multi-Way 6 23rd July 2005 06:28 PM
TQWP, Onken, BL Horn AlexanderS Multi-Way 0 23rd March 2005 09:15 AM
1/4wave corner horn scan? mikee12345 Multi-Way 14 11th April 2003 12:46 PM


New To Site? Need Help?

All times are GMT. The time now is 12:08 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