Horn designing software - diyAudio
Go Back   Home > Forums > Loudspeakers > Subwoofers

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 April 2005, 01:03 PM   #1
Puggie is offline Puggie  United Kingdom
diyAudio Member
 
Join Date: Oct 2004
Default Horn designing software

I want to design a large basshorn. It will be a folded horn to go into the back of a car, rear seats are going and the car is a large estate (I think thats a 'station wagon' to you guys on the other side of the pond). The driver will be a Resonant Engineering XXX18, I'm sure with a decent horn we can get something resembling efficiency out of it .

What software is out there for designing a suitable horn shape?
  Reply With Quote
Old 6th April 2005, 01:12 PM   #2
Mark Kravchenko --- www.kravchenko-audio.com
diyAudio Member
 
mwmkravchenko's Avatar
 
Join Date: Jan 2002
Location: Perth Canada
Default Try this

http://www.users.bigpond.com/dmcbean/

Great program. Give the instructions a good read and you will be pleased with the programs flexability and power.

Don't and have fun figuring it out! ( a bit of advice from someone who thought that it was a dumb program untill I read the Help file )

Mark
__________________
Mark
  Reply With Quote
Old 6th April 2005, 02:34 PM   #3
diyAudio Member
 
Join Date: Jan 2005
Location: Rotterdam, NL
Quote:
The driver will be a Resonant Engineering XXX18
Bare in mind it could be that the simulating is telling you it's not suited for your application at all.

Mvg Johan
  Reply With Quote
Old 6th April 2005, 03:33 PM   #4
Puggie is offline Puggie  United Kingdom
diyAudio Member
 
Join Date: Oct 2004
Quote:
Originally posted by Rademakers
Bare in mind it could be that the simulating is telling you it's not suited for your application at all.

Mvg Johan

Yep, the reason for the XXX is its what we have to work with I'm not convinced it will work hence I want something to predict the response before we start cutting.
  Reply With Quote
Old 7th April 2005, 01:06 AM   #5
mike.e is offline mike.e  New Zealand
diyAudio Member
 
mike.e's Avatar
 
Join Date: Sep 2004
Location: NZ
Send a message via ICQ to mike.e Send a message via MSN to mike.e
Read the helpfile,input the driver specs in the right order

Use the hypex function at first. Then make throat and mouth realistic size,model in 0.5pi i guess for a sealed car. Adjust vtc to reflect the sort of throat youl use[small with baffle infront of driver or labhorn style]

Folding the horn is another issue
  Reply With Quote
Old 7th April 2005, 08:44 AM   #6
Puggie is offline Puggie  United Kingdom
diyAudio Member
 
Join Date: Oct 2004
My initial (totally unscientific idea with no proper thought or design) was to have the horn mouth just behind the front seats, more or less full height and width of the car, this would taper back to the rear of the car, where it would fold 180degrees, and taper back towards the front of the car with the driver firing into the side of the throat a bit like the scandinavian (I think) monster horn posted on here a few months back. I'm hoping to get about 4m total length if you unfolded it and a horn mouth of about 1.5X2m.

changing driver is perfectly reasonable and the amp we are using will kick out a good 2kW at 4Ohm (quality class a/b noise maker too ) I was wondering about the Volt radial as a replacement because despite being rated at 500W RMS I know they can take lots more power (the baskets get a bit warm though).
  Reply With Quote
Old 7th April 2005, 11:08 AM   #7
Mark Kravchenko --- www.kravchenko-audio.com
diyAudio Member
 
mwmkravchenko's Avatar
 
Join Date: Jan 2002
Location: Perth Canada
Default Why so much power??

You get about a 10db of gain over most of the passband when using a horn. You realisee how much power you can do without now. Eight times less. Ie 100 watts will get you the same loudness in a horn that 800 watts will get you in a normal box. Cool !!

Mark
__________________
Mark
  Reply With Quote
Old 7th April 2005, 01:08 PM   #8
Puggie is offline Puggie  United Kingdom
diyAudio Member
 
Join Date: Oct 2004
I'm hoping for something like that, my friend has been told repeatedly sensitivity doesn't matter, just keep pumping more power into it if you want to go loud (hence a 2kW amp and Resonant Engineering sub). I'm hoping this little excercise will enlighten him a bit into the pros of an efficient system. The other positive is I'm hoping it will sound better than a typically huge bass reflex box, at the moment it booms and wobbles and thats about it.

Its a very silly project but thats half the fun
  Reply With Quote
Old 7th April 2005, 04:05 PM   #9
diyAudio Member
 
Join Date: Jan 2005
Location: Rotterdam, NL
Quote:
I was wondering about the Volt radial as a replacement because despite being rated at 500W RMS I know they can take lots more power (the baskets get a bit warm though).
It's the diafragm displacement graph (in combination with the dynamics of the music/signal) that will decide what power the speaker can handle.

Is it ment for use only inside the car or to open the trunk and use it mainly for outside? For inside you could take roomgain in account which is pretty big in a car/van. For outside halfspace would probably be about it.

How low it's supposed to go?

And can you post the T/S-parameters (for second opinion)?

Mvg Johan
  Reply With Quote
Old 7th April 2005, 08:10 PM   #10
djkib is offline djkib  United States
diyAudio Member
 
Join Date: Dec 2004
Location: Coatesville, PA, USA
I'm surprised nobody chimed in about the subs designed by Bill Fitzmaurice at http://www.billfitzmaurice.com . Great looking folded horn designs, and fairly easy to build.

My $0.02...
Keith
__________________
Programmer / Analyst
  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
Speaker Designing Software morfius Multi-Way 4 13th September 2007 06:01 AM
Designing software Twisted85 Multi-Way 2 3rd January 2007 06:29 PM
Help with speaker designing software for JBL project ebarker2 Multi-Way 1 26th May 2005 01:14 AM
CAD Software For Designing Amps barroter Everything Else 3 1st November 2003 01:09 AM
Subwoofer box designing software palesha Subwoofers 2 4th November 2002 08:10 AM


New To Site? Need Help?

All times are GMT. The time now is 08:42 AM.


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