Rare folded horn Opus 1 - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Multi-Way Conventional loudspeakers with crossovers

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 January 2016, 04:10 PM   #1
diyAudio Member
 
Walloffound's Avatar
 
Join Date: Jan 2016
Default Rare folded horn Opus 1

Has anyone ever seen or heard a Stan White Opus 1
I'm trying to figure out what were the original drivers or something that would work for this cabinet 8" and 5" holes.
They were made in 1957 and may have had Quam Nichold speakers the holes are shallow.
Thanks
Attached Images
File Type: jpeg image.jpeg (75.0 KB, 412 views)
File Type: jpg image.jpg (565.6 KB, 402 views)
  Reply With Quote
Old 7th January 2016, 02:27 AM   #2
diyAudio Member
 
Walloffound's Avatar
 
Join Date: Jan 2016
Hey everybody, it's my first post... Anybody there ... Mic check one two...
Thanks for any thought you might have
  Reply With Quote
Old 7th January 2016, 04:57 AM   #3
freddi is offline freddi  United States
diyAudio Member
 
freddi's Avatar
 
Join Date: Aug 2005
all I know is that must be very rare - I heard that Stan had some very big (and loud) speakers with high power amps for some of the early HiFi shows. What are the dimensions including the mouth? - can you figure out the path and expansion? It would be interesting to load it, get input impedance and see what it does. ( "White cathode-followers" are cool )

ah - here's a page on the Opus 1 http://www.itishifi.com/search/label/Stan%20White
  Reply With Quote
Old 7th January 2016, 08:41 AM   #4
ErnieM is offline ErnieM  United States
diyAudio Member
 
Join Date: Dec 2009
Location: Fresno, CA
Neat little box! A modern 8" fullrange/prosound driver would probably do better than the original. Can you measure the depth to help narrow down possible replacement drivers? I would cover up the 5" whole and maybe put a nice little 2" or 3" fullrange for a mid tweet. Or keep it super simple with a nice fullrange 8".
  Reply With Quote
Old 7th January 2016, 09:55 AM   #5
xrk971 is offline xrk971  United States
diyAudio Member
 
xrk971's Avatar
 
Join Date: Oct 2012
Location: Virginia
A sketch of what the dimensions and horn geometry/flow arrangement would be very useful. I cannot picture what is going on from the photo. It is indeed rare.
  Reply With Quote
Old 7th January 2016, 02:46 PM   #6
freddi is offline freddi  United States
diyAudio Member
 
freddi's Avatar
 
Join Date: Aug 2005
perhaps we can find Stan's patents - here's a nice brochure http://www.technicalaudio.com/pdf/Go...udspeakers.pdf

here's one blh patent https://docs.google.com/viewer?url=p.../US2866513.pdf

Last edited by freddi; 7th January 2016 at 02:55 PM.
  Reply With Quote
Old 7th January 2016, 03:23 PM   #7
diyAudio Member
 
Walloffound's Avatar
 
Join Date: Jan 2016
Thanks y'all !! I will take some measurements and try to see what is going on inside. The one I have has the opening on the bottom and not the front, the way it looks in the patent. I can tell you that the corners of the inside folds are rounded off with the addition of curved piece of linolium. I found one guy on this forum who built one and I private messages him but he hasn't been active in a while. I was hoping to restore this piece to original since it's sort of rare. But it turns out that the original had seemingly unimpressive PA type Quam-Nichols drivers. I have a Jansen PA8 driver but the square magnet is just a bit too wide to fit into the existing round hole. I just wanted to do some research and consult the experts before starting to hacksaw things. I'm a beginner of audio so I really appreciate your help and experiencen.
Thanks

"Horn of Plenty" Three Way X-Over HELP
Grill Material for Stan White "Curled" Horn Reproduction
  Reply With Quote
Old 8th January 2016, 03:52 AM   #8
diyAudio Member
 
Walloffound's Avatar
 
Join Date: Jan 2016
Here are the measurements:
Attached Images
File Type: jpg image.jpg (584.7 KB, 246 views)
  Reply With Quote
Old 8th January 2016, 07:11 AM   #9
diyAudio Member
 
Walloffound's Avatar
 
Join Date: Jan 2016
"The horn has an equivalent axial length of 12 feet" - from the brochure
  Reply With Quote
Old 8th January 2016, 07:19 AM   #10
freddi is offline freddi  United States
diyAudio Member
 
freddi's Avatar
 
Join Date: Aug 2005
very cool and nice drawing - be interesting to see how it measures once loaded with a woofer
  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
jbl gto804 tapped horn/ folded horn 2009thread1 Subwoofers 103 6th December 2015 06:26 PM
Tapped horn vs folded horn lowerFE Subwoofers 19 8th June 2015 07:07 AM
Folded horn - volume between subwoofer cone ane th start of the horn benpalmer Subwoofers 8 9th April 2012 01:10 PM
Entering horn meaurements fora folded horn (hornsrep) Tidy Max Software Tools 3 21st February 2011 02:28 AM
how to go from horn response to a folded bass horn design? paulspencer Subwoofers 8 4th November 2005 10:44 PM


New To Site? Need Help?

All times are GMT. The time now is 07:31 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.
Copyright 1999-2016 diyAudio

Content Relevant URLs by vBSEO 3.3.2
Wiki