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

Multi-Way Conventional loudspeakers with crossovers

McBean's Horn Response tutorial???
McBean's Horn Response tutorial???
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 29th March 2010, 11:28 PM   #1
djn is offline djn  United States
diyAudio Member
 
djn's Avatar
 
Join Date: Oct 2004
Location: Albuquerque, New Mexico
Default McBean's Horn Response tutorial???

Hi All, I am working with McBean's Hornres and looking for a tutorial. Any idea where to find a good explanation on how to use it. I've been using the Help function in the program but I could sure use more detail. Cheers.
  Reply With Quote
Old 23rd April 2010, 10:29 AM   #2
morpheus82 is offline morpheus82  Italy
diyAudio Member
 
Join Date: Oct 2004
hi mate, where can I download it?
Thanks a lot!
  Reply With Quote
Old 23rd April 2010, 10:33 AM   #3
Rademakers is offline Rademakers  Netherlands
diyAudio Member
 
Join Date: Jan 2005
Location: Rotterdam, NL
Guide to WinISD Pro and Hornresp - Speakerplans.com Forums - Page 1

Best regards Johan
__________________
Impossibilities we do immediatly, miracles take slightly longer.
  Reply With Quote
Old 16th September 2019, 06:08 PM   #4
SoundRight is offline SoundRight  United Kingdom
diyAudio Member
 
Join Date: Jul 2010
Default Folded Horns

Well, I must be stupid because I'm really struggling with this program!

Thought I'd try simulating a classic front loaded single folded horn, the old EV Eliminator 1 & 2. I have the Thiele Small parameters for the later used 15B driver, not sure why I would need the length of the sealed rear enclosure for instance? I know the horn was exponential and tuned to 55Hz according to old EV specs but at a complete loss how to go about simulating this in Horn Response!

Reason for the enquiry is to see how this old design would perform with drivers with considerably more Xmax and power handling, but I fail to see where the programme takes account of any of these specs?

Is there and absolute idiots guide to working with this programme??
  Reply With Quote
Old 17th September 2019, 04:21 AM   #5
GM is offline GM  United States
diyAudio Member
 
GM's Avatar
 
Join Date: Jun 2003
Location: Chamblee, Ga.
Welcome to the club! IIRC it was probably a decade after I first DL'd it before I tried fiddling with it again.

Anyway, post the critical dims.......note that if folded you must unfold it to input in HR or if you know its frequency and flare factor or at least its axial length, then with throat, mouth area, HR can calculate the various expansions.

The reason for the sealed chamber depth is HR calculates basic standing waves [eigenmodes] for when the cab has a high aspect ratio, which can be useful in other types of designs, so for a typical compression chamber just always make it ~1.5x the driver's installed depth.

There's places to do it all and a whole lot more thanks to the tremendous number of upgrades done in recent years, many that he said would NEVER happen, more than I've had time to 'assimilate' in my dotage.

GM
__________________
Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.
  Reply With Quote
Old 17th September 2019, 08:57 AM   #6
David McBean is offline David McBean  Australia
diyAudio Member
 
Join Date: Jun 2007
Quote:
Originally Posted by SoundRight View Post
not sure why I would need the length of the sealed rear enclosure for instance?
If you are not interested in seeing the chamber resonances, simply put any value you like for Lrc and use the "resonances masked" option.
__________________
www.hornresp.net
  Reply With Quote
Old 17th September 2019, 11:40 AM   #7
SoundRight is offline SoundRight  United Kingdom
diyAudio Member
 
Join Date: Jul 2010
Hi and thank you both for responses and particularly David for helping out here.

I noticed a spreadsheet programme "The Subwoofer DIY Page", horn folding spreadsheets which exports to Hornresp which could be a useful tool?

Must admit though, the more I look at the various designs, the same old arguements return for me. Horns are large boxes usually created out of 15mm or 19mm BFP for lightness, large panels which need a lot of bracing, steep roll off's and limited bandwidth, all in the name of efficiency?

And I keep coming back to small rigid Linkwitz Transform trapezoid cabinets, 15" drivers and in one design case a cabinet of only 45 litres. Tuned to a very low frequency for reduced cone excursion..(or sealed if you like) it is possible to extend the base to -6 at 35Hz with identical responses/very low group delay and a roll off of 15dB/octave in both reflex and sealed versions created with slightly different EQ's for each variant. One particular Beyma driver will handle 750 watts still remaining within it's Xmax (250watts if sealed) but with a massive margin with an Xlimit of 65mm.

If you block 4 together you have a baffle area of around 10 sq ft, power handling of 3000watts and an spl (still remaining within linear cone excursion), of 135dB "continuous" with more on programme with the driver coil capable handling 1600 watts. I am guessing with mutual coupling you have dropped the F3 to around -6dB at 28Hz as well..

So tricky to decide!! Always compromises!
  Reply With Quote
Old 17th September 2019, 04:30 PM   #8
SoundRight is offline SoundRight  United Kingdom
diyAudio Member
 
Join Date: Jul 2010
Actually make that 16-20sq ft baffle area...
  Reply With Quote
Old 1st October 2019, 05:12 PM   #9
LION SQUAD SOUND is offline LION SQUAD SOUND  United States
diyAudio Member
 
Join Date: Aug 2019
Good afternoon how do you unfold an already designed rear loaded speaker plan.
  Reply With Quote

Reply


McBean's Horn Response tutorial???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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
More then one driver in Horn Response jamikl Subwoofers 2 4th February 2009 11:44 PM
how to go from horn response to a folded bass horn design? paulspencer Subwoofers 8 4th November 2005 10:44 PM
Comments on bass horn sim in horn response paulspencer Subwoofers 38 1st November 2005 08:34 PM


New To Site? Need Help?

All times are GMT. The time now is 10:49 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki