Carfrae Little Big Horn "Lite" - 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 13th August 2015, 10:34 AM   #1
diyAudio Member
 
Join Date: Aug 2008
Location: Sydney
Default Carfrae Little Big Horn "Lite"

I've built this using CAD CNC...and is a slightly scaled down version on the full model with powered sub.

I like the look of the curved sides.

Suitable for Fostex, Tang Band and Lowther....this one was using DX3.

This could be machined in MDF or ply...depending on what finish is desired.

See also pic of white full version which a gent in NZ built using my CAD CNC kit.

Andrew
Attached Images
File Type: jpg post-103876-0-31458700-1423823026.jpg (103.8 KB, 266 views)
File Type: jpg post-103876-0-52113900-1423823036.jpg (100.3 KB, 262 views)
File Type: jpg post-103876-0-68475100-1422772215.jpg (129.7 KB, 257 views)
File Type: jpg post-103876-0-91441000-1422772188.jpg (102.8 KB, 253 views)
File Type: jpg post-133084-0-92674300-1423552111.jpg (100.9 KB, 260 views)
  Reply With Quote
Old 13th August 2015, 11:11 AM   #2
xrk971 is online now xrk971  United States
diyAudio Member
 
xrk971's Avatar
 
Join Date: Oct 2012
Location: Virginia
The design looks very beautiful and organic. It must have some very nice bass. I do have a question why such a round baffle around the driver bezel is used. I have done this once and found first hand that the warnings of the round baffle being the worst of all is true. There are huge 6dB to 10dB dips due to round baffle diffraction effects that simply go away when using a rectangular or trapezoidal baffle. It's true as the measurement positively show it and it sounds not so pleasant. Just a warning for folks out there who may be wondering why the response of an otherwise flat response driver is ruined - the round baffle is the cause. For this particular case, it may not be as bad as a round disc baffle as there is sort of a rectangular horn wall housing behind the round baffle protrusion - but there may be some residual diffraction effects at the higher frequencies that would be improved simply by making those round discs rectangles.

More details on the theory by SL here:
Diffraction from baffle edges

Last edited by xrk971; 13th August 2015 at 11:25 AM.
  Reply With Quote
Old 13th August 2015, 11:49 AM   #3
diyAudio Member
 
Join Date: Aug 2008
Location: Sydney
Thanks...the original design is Jim Carfrae's, so I'm not sure what assessment he made in this regard. Certainly, the supporting plate behind the ring, plus the main body will reduce diffraction, as you say.

Having built many horns, I can attest to the enjoyable presentation of the Carfrae, particularly the bass, as the large tractrix curve works very well.

(See attached pics of my own designed C-Horn for Lowther.

Kind regards. Andrew
Attached Images
File Type: jpg C-horn Ian.jpg (390.5 KB, 134 views)
File Type: jpg Red c-horn side on.jpg (115.7 KB, 106 views)
File Type: jpg c-horn up close.jpg (49.3 KB, 87 views)
  Reply With Quote
Old 13th August 2015, 01:01 PM   #4
xrk971 is online now xrk971  United States
diyAudio Member
 
xrk971's Avatar
 
Join Date: Oct 2012
Location: Virginia
Quote:
Originally Posted by atilsley View Post
Thanks...the original design is Jim Carfrae's, so I'm not sure what assessment he made in this regard. Certainly, the supporting plate behind the ring, plus the main body will reduce diffraction, as you say.

Having built many horns, I can attest to the enjoyable presentation of the Carfrae, particularly the bass, as the large tractrix curve works very well.

(See attached pics of my own designed C-Horn for Lowther.

Kind regards. Andrew
Thanks. Your see thru plexiglas wall horn is perhaps the most beautiful of all BLH's I have ever seen. Nice work there!
  Reply With Quote
Old 13th August 2015, 01:24 PM   #5
DaveCan is offline DaveCan  Canada
diyAudio Member
 
DaveCan's Avatar
 
Join Date: Nov 2005
Location: Moncton NB
I've often thought that the big open unused circular space behind the driver in the Carfrae would be the perfect place to add a dipole/OB woofer from AE or something..
  Reply With Quote
Old 13th August 2015, 11:00 PM   #6
diyAudio Member
 
Join Date: Aug 2008
Location: Sydney
Thanks. a few more pics.

It's 'easy' to build.

I've enjoyed testing all sorts of drivers...DX3, 206E, B200 Visaton etc. I'd like to try Tang Band next.
Attached Images
File Type: jpg CHorn.jpg (189.1 KB, 62 views)
File Type: png danny c-horn.png (969.3 KB, 59 views)
File Type: jpg c%20horn%20glue%20up.JPG (513.9 KB, 52 views)
  Reply With Quote
Old 13th August 2015, 11:04 PM   #7
diyAudio Member
 
Join Date: Aug 2008
Location: Sydney
Quote:
Originally Posted by DaveCan View Post
I've often thought that the big open unused circular space behind the driver in the Carfrae would be the perfect place to add a dipole/OB woofer from AE or something..
Like this what someone has tried?
Attached Images
File Type: jpg bd15ex22.jpg (93.6 KB, 84 views)
  Reply With Quote
Old 14th August 2015, 11:30 AM   #8
Soakin' up the Sound!
diyAudio Member
 
mikejennens's Avatar
 
Join Date: Feb 2008
Location: Bismarck, ND
Are any plans/drawings available for this? The cisrcular cuts might be a challenge without the use of a CNC, but once one was done correctly, it could be used as a template for the rest. In that lind of thinking, a guy could have on done by a shop with a CNC and use it as a template.
Thanks,
Mike
__________________
Marantz PM8003 amp, Jolida SJ502A, Squeezebox Touch, MLTL Continuums; MarkAudio A 7.3 Frugalhorns, MarkAudio CHP-70s
  Reply With Quote
Old 14th August 2015, 12:38 PM   #9
diyAudio Member
 
Join Date: Aug 2008
Location: Sydney
Quote:
Originally Posted by mikejennens View Post
Are any plans/drawings available for this? The cisrcular cuts might be a challenge without the use of a CNC, but once one was done correctly, it could be used as a template for the rest. In that lind of thinking, a guy could have on done by a shop with a CNC and use it as a template.
Thanks,
Mike
Hi Mke, yes, I have files for CAD/CNC...but would need to take that offline. Kind regards. Andrew
  Reply With Quote
Old 14th August 2015, 12:43 PM   #10
Soakin' up the Sound!
diyAudio Member
 
mikejennens's Avatar
 
Join Date: Feb 2008
Location: Bismarck, ND
Quote:
Originally Posted by atilsley View Post
Hi Mke, yes, I have files for CAD/CNC...but would need to take that offline. Kind regards. Andrew
Thanks Andrew. I should have more clear with my question. If I wanted to try this without the benefit of CAD or a CNC, are there plans available to do the cuts by hand?
Mike
__________________
Marantz PM8003 amp, Jolida SJ502A, Squeezebox Touch, MLTL Continuums; MarkAudio A 7.3 Frugalhorns, MarkAudio CHP-70s
  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
Frugel-Horn Lite for 3" drivers planet10 Planet 10 hifi 27 27th July 2015 09:27 AM
Pics Carfrae Little Big Horn "Lite" - kit atilsley Full Range 5 13th February 2015 07:28 PM
Simple, Big 18" Horn for Club use elleman Subwoofers 10 28th February 2013 09:39 PM
3-way with big (10") woofer and monitor (6.5"+1") on top like "Tarkus" proxii Multi-Way 16 30th October 2012 12:43 PM
New Semisouth SiC "JFET Lite" wrenchone Pass Labs 14 21st April 2012 11:15 PM


New To Site? Need Help?

All times are GMT. The time now is 11:17 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2015 DragonByte Technologies Ltd.
Copyright 1999-2015 diyAudio

Content Relevant URLs by vBSEO 3.3.2