Collaborative Tapped horn project - Page 355

Ibex · 11:37 PM

Looks quiet interesting mate!
Did you ever try to model your special TH designs with any software or did you just assume that it will work propperly because of your experienced know-how?

edit:
Sorry, you ware even faster than I was able to think....

Ibex · 8th September 2010, 11:38 PM

Why did you choose such a high Qts driver?

mwmkravchenko · 8th September 2010, 11:50 PM

Well Lee I would be happy to model it in Hornresp if you want. I have designed a built quite a few horns over the years and have found Hornresp to be very accurate predictor of the results of a driver/horn system.

Mark

Lee in Montreal · 12:12 AM

Quote:

Originally Posted by Ibex

Why did you choose such a high Qts driver?

Just because I have four of these drivers already installed, and have four more needing a good home.

These are mid-eighties drivers BTW. As far as "experience", these are the first horns I build, but have read a lot from others' experience and have built a few transmission lines. I wished I could have made the enclosure 1/2 wave instead of 1/4 wave, but there's a space contingency in my basement for four bins...

Lee in Montreal · 9th September 2010, 01:49 PM

I have updated the diagram on post ##3538 to display the progression of the horn. The diagram shoes that the progression is virtually a quarter of a circle that has been expanded horizontally.

pumpkin1 · 9th September 2010, 10:19 PM

Unfortunately, I'm with Blamus. I've struggled to be able to design my own TH, but have come up with lots of HR designs. Translating to a compact box is very difficult. I want to do more, but there are lots of us lurking about who would like to find more completed plans out there to copy. The 25hz anarchy is a good example, but at $80/driver, I'd rather use my old 8" JL Audio car sub's which actually model very well in the same plan-but how to enlarge for the bigger driver? You would be a hero if you could help with that.

Ibex · 9th September 2010, 10:43 PM

Attached you have the sims of Lee's design.
On the left side you have the sim in 0.5xPi and on the right the same in 2.0xPi, both modeled in HR as a TH.
On the bottom right for comparison a 2.0xPi sim made with Akabak.

...seems that the design needs to get a little bit fine tuned.

btw, someone else once tried something similar:

Basshorn212 - Speakerplans.com Forums - Page 1

gzg

Lee in Montreal · 9th September 2010, 11:04 PM

Thanks Ibex for the modeling. So, I got volume and I got the length. What's causing all the ripples?

This afternoon I spent some time making the horn longer and simpler. I am 200ft now. ;-)

brsanko · 9th September 2010, 11:15 PM

Well I haven't looked if you have already but if not post the specs of your driver I could come up with something in pretty short order. Other wise the MCM 55-2421 8" Woofer out does anything I've seen for fantastic performance in a small tapped horn and it cost only $35. I built one for my car and it beat the pants off the Dayton reference series 10" Sub I had in a 1cf ported box!

pumpkin1 · 9th September 2010, 11:40 PM

Brsanko- even if you just shared your plans, I'd be forever grateful or if you could help me remodel the anarchy 25hz model for an 8", that would be great. I need to x/o at 100hz and go down to 30hz if possible However, my old Jl W1 drivers from the anarchy 25hz model are as follows:Ang=1.0 x Pi
Eg=2.83
Rg=0.00
Fta=0.55
S1=57.00
S2=61.00
Con=9.00
F12=0.00
S2=61.00
S3=219.00
Con=328.00
F23=0.00
S3=219.00
S4=250.00
Con=60.00
F34=0.00
S4=0.00
S5=0.00
L45=0.00
F45=0.00
Sd=198.06
Bl=9.95
Cms=4.56E-04
Rms=0.91
Mmd=48.79
Le=1.00
Re=3.34
TH=1

8th September 2010, 11:34 PM	#3541
Ibex diyAudio Member Join Date: May 2009	Looks quiet interesting mate! Did you ever try to model your special TH designs with any software or did you just assume that it will work propperly because of your experienced know-how? edit: Sorry, you ware even faster than I was able to think.... Last edited by Ibex; 8th September 2010 at 11:37 PM.

8th September 2010, 11:50 PM	#3543
mwmkravchenko Mark Kravchenko --- www.kravchenko-audio.com diyAudio Member Join Date: Jan 2002 Location: Perth Canada	Well Lee I would be happy to model it in Hornresp if you want. I have designed a built quite a few horns over the years and have found Hornresp to be very accurate predictor of the results of a driver/horn system. Mark __________________ Mark

9th September 2010, 11:15 PM	#3549
brsanko diyAudio Member Join Date: Dec 2003 Location: Duluth, MN	Well I haven't looked if you have already but if not post the specs of your driver I could come up with something in pretty short order. Other wise the MCM 55-2421 8" Woofer out does anything I've seen for fantastic performance in a small tapped horn and it cost only $35. I built one for my car and it beat the pants off the Dayton reference series 10" Sub I had in a 1cf ported box! __________________ PASSIONN

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8th September 2010, 11:38 PM	#3542
Ibex diyAudio Member Join Date: May 2009	Why did you choose such a high Qts driver?

9th September 2010, 01:49 PM	#3545
Lee in Montreal diyAudio Member Join Date: Oct 2009	I have updated the diagram on post ##3538 to display the progression of the horn. The diagram shoes that the progression is virtually a quarter of a circle that has been expanded horizontally.

9th September 2010, 10:19 PM	#3546
pumpkin1 diyAudio Member Join Date: Jul 2010 Location: Johns Creek, GA.	Unfortunately, I'm with Blamus. I've struggled to be able to design my own TH, but have come up with lots of HR designs. Translating to a compact box is very difficult. I want to do more, but there are lots of us lurking about who would like to find more completed plans out there to copy. The 25hz anarchy is a good example, but at $80/driver, I'd rather use my old 8" JL Audio car sub's which actually model very well in the same plan-but how to enlarge for the bigger driver? You would be a hero if you could help with that.

9th September 2010, 11:04 PM	#3548
Lee in Montreal diyAudio Member Join Date: Oct 2009	Thanks Ibex for the modeling. So, I got volume and I got the length. What's causing all the ripples? This afternoon I spent some time making the horn longer and simpler. I am 200ft now. ;-)

9th September 2010, 11:40 PM	#3550
pumpkin1 diyAudio Member Join Date: Jul 2010 Location: Johns Creek, GA.	Brsanko- even if you just shared your plans, I'd be forever grateful or if you could help me remodel the anarchy 25hz model for an 8", that would be great. I need to x/o at 100hz and go down to 30hz if possible However, my old Jl W1 drivers from the anarchy 25hz model are as follows:Ang=1.0 x Pi Eg=2.83 Rg=0.00 Fta=0.55 S1=57.00 S2=61.00 Con=9.00 F12=0.00 S2=61.00 S3=219.00 Con=328.00 F23=0.00 S3=219.00 S4=250.00 Con=60.00 F34=0.00 S4=0.00 S5=0.00 L45=0.00 F45=0.00 Sd=198.06 Bl=9.95 Cms=4.56E-04 Rms=0.91 Mmd=48.79 Le=1.00 Re=3.34 TH=1