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

convert horn response data to cutting wood!
convert horn response data to cutting wood!
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
Thread Tools Search this Thread
Old 2nd October 2009, 03:19 AM   #1
grecon is offline grecon  United States
diyAudio Member
Join Date: Jun 2008
Default convert horn response data to cutting wood!

How do you convert Horn Reponse data to cutting wood!

I've been lurking for quite awhile trying to learn from your threads.
I've learned the basics of entering a driver into Horn Response and using the tapped horn wizard to design a TH.
I've studied several different tapped horn foldings.
I learned of Volvotreter's folding idea to bring the box down to shorter lengths. I don't do autocad but I can print out a Horn Response Schematic diagram, cut it into pieces and arrange them as per similiar foldings I've seen.
I still do not understand how to use this information to get actual measurements to cut wood. Its just not clicking.

Where is the "Dummies" book for me!
  Reply With Quote
Old 2nd October 2009, 10:20 AM   #2
MaVo is offline MaVo  Germany
diyAudio Member
Join Date: Jan 2006
Use google sketchup. Translate the hornresp horn segment length and area data into one long conical shape in it. Cut the conical shape up and arrange it into a box shape. Take the virtual measuring thing and get the size of the surfaces you created.
  Reply With Quote
Old 2nd October 2009, 06:49 PM   #3
David_Web is offline David_Web  Sweden
diyAudio Member
Join Date: Sep 2008
Use the export function in schematic tab, choose the height and increment. Width flare should be Uni.
I export to txt file and then copy/paste it into excel as it won't open csv files properly.

Then print it out and start crunching numbers.
You will notice that the walls are not straight, this is due to conical expansion vs linear for the physical horn. The difference is usually minor but can be corrected somewhat with folding. Won't impact the response much though. Unless you have extreme flare.

You can't use the printout from HR directly as it has cone diameter as height unit.

It's not easy to fold but you get there.
  Reply With Quote
Old 4th October 2009, 12:58 AM   #4
mwmkravchenko is offline mwmkravchenko  Canada
Mark Kravchenko
diyAudio Member
mwmkravchenko's Avatar
Join Date: Jan 2002
Location: Perth Canada
convert horn response data to cutting wood!
Default Here is basically what I do

Start with the input screen
Second calculate the box
Third go to the schematic screen
Fourth top left hand side click and click on file then export
Fifth specify a box width this one is 8 inches or 20.32 cm
Sixth specify a measurement increment. I usually use 10cm or about 4 inches.
Seventh on the right hand side click on the boxes and set them to uni this will make the horn box change dimensions in one plane only. It will leave your set box width untouched but vary the height.
Eighth find the saved file in the hornresp folder and open it up in note pad.
Ninth study what you have here.'
Tenth plot it out full scale onto what ever you have and work towards a fold. How? All along the horn path length you have calculated the height at 4 inch intervals. So mark them. I personally mark the start and stop of each section as I usually design with conical horn segments. This means you have only a few dots to make out. Now connect the dots using a straight edge and you get the horn contour. If you want to fold the horn you have something full scale you can at least visualize.

MarkBasic steps to get from Hornresp Data to box 1.GIF

Data to box part 2.GIF

Data Part 3.GIF

Last edited by mwmkravchenko; 4th October 2009 at 01:00 AM.
  Reply With Quote


convert horn response data to cutting wood!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
Hiquphon OW4 frequency and impedance response data luvdunhill Multi-Way 3 26th October 2014 08:32 AM
Tad Wood Horn Diy thanhVNS Multi-Way 4 22nd May 2013 03:47 PM
Theta Data II cutting out centaurus3200 Digital Source 9 12th February 2010 08:34 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 09:51 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio