diy 20 Hz tapped horn plans

slisgrinder · 15th September 2009, 03:28 AM

Any good diy 20 Hz tapped horn plans that are relatively easy to build like William Cowan's 18 Hz tapped horn?

FlipC · 15th September 2009, 06:59 AM

Didnt you just answer your own question?

There are quite a few if your looking for low SPL. IE non PA usage.
What SPL do you want to hit?

slisgrinder · 03:54 PM

yeah, william didn't post plans for the 18 Hz, only the 30 Hz... my SPL requirements are ~125+... I am going to build atleast 2 THs ( one in the front and one in the back)... possible?

GM · 15th September 2009, 04:05 PM

There's a number of drivers that either singly or in multiples will cover your BW/SPL goals, so what's driver and space 'budget'?

GM

jbell · 15th September 2009, 04:06 PM

You'll exceed xmax above 30volts, but this gets you very close (within a db) of 125 in an under 300liter cabinet, in a corner from the lowly 55-2421.

slisgrinder · 15th September 2009, 04:41 PM

Thanks for the horn resp parameters but I am a complete n00b at horn resp and when I select tapped horn from the driver arrangement selection I don't get the same screen as you do...i have attached an image...if anybody else has plans please feel free to share...

slisgrinder · 15th September 2009, 05:16 PM

wait, I got the parameters correct and everything is correct, but the parameter "TH" which is in red only shows a value of 1...what am I doing wrong?

slisgrinder · 15th September 2009, 05:19 PM

In the attached image, the TH parameter only shows a value of 1...please bare with me since I have never used horn resp before...

FlipC · 15th September 2009, 05:46 PM

Under Tools drop down.
Select Driver arrangement. Input 2 in parallel. Less you want to wire the cab in series. Then put the 2 there.

Post up the amount of space you want these
cabinets to take up and someone will whip you up something. I am sure.

slisgrinder · 15th September 2009, 06:13 PM

Thankx...If I wanted to design my own tapped horn, what do I need to take into consideration? I was reading up on Tom Danley's white paper on tapped horns and found that the length of the horn needs to be a quarter wavelength of the low cut off frequency (so if I wanted to a 20Hz horn, then the length would have to be 169.5 inches) so what about the mouth and the throat of the horn? how do you calculate that in reference to the length of the horn?

15th September 2009, 03:28 AM	#1
slisgrinder diyAudio Member Join Date: Jun 2009	diy 20 Hz tapped horn plans Any good diy 20 Hz tapped horn plans that are relatively easy to build like William Cowan's 18 Hz tapped horn?

15th September 2009, 03:51 PM	#3
slisgrinder diyAudio Member Join Date: Jun 2009	yeah, william didn't post plans for the 18 Hz, only the 30 Hz... my SPL requirements are ~125+... I am going to build atleast 2 THs ( one in the front and one in the back)... possible? Last edited by slisgrinder; 15th September 2009 at 03:54 PM.

15th September 2009, 04:05 PM	#4
GM diyAudio Member Join Date: Jun 2003 Location: Chamblee, Ga.	There's a number of drivers that either singly or in multiples will cover your BW/SPL goals, so what's driver and space 'budget'? GM __________________ Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Tapped Horn For Car	mwmkravchenko	Subwoofers	365	17th November 2011 10:22 AM
Help with a tapped horn.	mike james 533	Subwoofers	32	11th November 2009 02:34 AM
Tapped Horn behavior	screamersusa	Subwoofers	32	21st October 2008 03:31 AM


	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

15th September 2009, 06:59 AM	#2
FlipC diyAudio Member Join Date: Aug 2008	Didnt you just answer your own question? There are quite a few if your looking for low SPL. IE non PA usage. What SPL do you want to hit?

15th September 2009, 05:16 PM	#7
slisgrinder diyAudio Member Join Date: Jun 2009	wait, I got the parameters correct and everything is correct, but the parameter "TH" which is in red only shows a value of 1...what am I doing wrong?

15th September 2009, 05:46 PM	#9
FlipC diyAudio Member Join Date: Aug 2008	Under Tools drop down. Select Driver arrangement. Input 2 in parallel. Less you want to wire the cab in series. Then put the 2 there. Post up the amount of space you want these cabinets to take up and someone will whip you up something. I am sure.

15th September 2009, 06:13 PM	#10
slisgrinder diyAudio Member Join Date: Jun 2009	Thankx...If I wanted to design my own tapped horn, what do I need to take into consideration? I was reading up on Tom Danley's white paper on tapped horns and found that the length of the horn needs to be a quarter wavelength of the low cut off frequency (so if I wanted to a 20Hz horn, then the length would have to be 169.5 inches) so what about the mouth and the throat of the horn? how do you calculate that in reference to the length of the horn?

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read