Tapped Horn TH-121 build

ZivkoF · 8th April 2012, 07:09 AM

Now days as there is more and more 21-inch drivers on the market would be nice to have some Tapper Horn build with it. I have one RCF LF21N451 driver and looking for Tapped Horn build with this driver in the box W 24-inch x H 60-inch x D 30-inch which is 1/2 size of DSL TH-221, horn path should be 18 foot long any suggestions how the inside of the box should look like and if you help me with Hornresp simulation. Thanks!

ZivkoF · 8th April 2012, 08:01 AM

Wood will be 18mm BB

RCF - LF21N451

epa · 8th April 2012, 09:12 AM

thats a +700 ltr cab.
hornpath 5.4 mtrs sugesting a flat to 16 hz horn?
what are you looking for ,in terms of output ,f3?

epa · 8th April 2012, 09:27 AM

olsound · 8th April 2012, 11:29 AM

Eric
Design a tapped horn with this driver for me but to exxpensive to buy and shipped.
[URL="http://www.diyaudio.com/forums/subwoofers/189551-r-evenge-c-omes-f-orce.html

ZivkoF · 8th April 2012, 01:09 PM

Thanks epa for your help

. I will try to sketch three folds in the TH today as far I have now datas for S1 (364,24 cm2), S2 (476,09 cm2), S3 (1790,78 cm2) and S4 (3556,32 cm2)..

epa · 8th April 2012, 04:41 PM

1 a compresion ratio 3.5 to 1 ,is to much,especialy for a 21 driver.
2 the areas you sugested give an odd fr responce.
if you tell us what freq range you are looking for,we can be of better asistence.

ZivkoF · 8th April 2012, 05:48 PM

Hi epa, just instaled new Hornresp Version 29.00 my old didnt worked good. I need TH from some 18 Hz - 60 Hz ! I have 2 FLHs from 35 Hz - 140 Hz. Some new datas: S1=364,24; S2=476,09; S3=1032,48; S4=1493,37; S5=3556,32; and L12 Con=34,00; L23 Exp=200,00; L34 Con=190,00; L45 Con=120 which means Horn lenght is 544,00 cm.

epa · 8th April 2012, 06:17 PM

remeber the system volume,you have to add 25 to 35% extra volume for pannels and corner losses.
ie if the sym says 400 ltr the box wil be close to 600 ltrs in real live.
if you have a sim i can (try)convert it to a model.

m R g S r · 8th April 2012, 11:17 PM

Josh Ricci has a horn designed around the B&C 21" monster, and I mentioned the RCF you have listed, and he said it didn't sim nicely in his horn...

With that much surface area from the 21" driver, are you sure a Bass reflex tuned to 15hz or so wouldn't be enough?

8th April 2012, 07:09 AM	#1
ZivkoF diyAudio Member Join Date: Jan 2011 Location: Ljubljana, Slovenia	Tapped Horn TH-121 build Now days as there is more and more 21-inch drivers on the market would be nice to have some Tapper Horn build with it. I have one RCF LF21N451 driver and looking for Tapped Horn build with this driver in the box W 24-inch x H 60-inch x D 30-inch which is 1/2 size of DSL TH-221, horn path should be 18 foot long any suggestions how the inside of the box should look like and if you help me with Hornresp simulation. Thanks!

8th April 2012, 09:12 AM	#3
epa diyAudio Member Join Date: Apr 2010 Location: amsterdam	thats a +700 ltr cab. hornpath 5.4 mtrs sugesting a flat to 16 hz horn? what are you looking for ,in terms of output ,f3? __________________ one good thing about music ,when it hit you feel no pain. so hit me with music.

8th April 2012, 09:27 AM	#4
epa diyAudio Member Join Date: Apr 2010 Location: amsterdam	__________________ one good thing about music ,when it hit you feel no pain. so hit me with music.

8th April 2012, 11:29 AM	#5
olsound diyAudio Member Join Date: Feb 2011	Eric Design a tapped horn with this driver for me but to exxpensive to buy and shipped. [URL="http://www.diyaudio.com/forums/subwoofers/189551-r-evenge-c-omes-f-orce.html __________________ Countryman skank

8th April 2012, 04:41 PM	#7
epa diyAudio Member Join Date: Apr 2010 Location: amsterdam	1 a compresion ratio 3.5 to 1 ,is to much,especialy for a 21 driver. 2 the areas you sugested give an odd fr responce. if you tell us what freq range you are looking for,we can be of better asistence. __________________ one good thing about music ,when it hit you feel no pain. so hit me with music.


	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

8th April 2012, 08:01 AM	#2
ZivkoF diyAudio Member Join Date: Jan 2011 Location: Ljubljana, Slovenia	Wood will be 18mm BB RCF - LF21N451

8th April 2012, 01:09 PM	#6
ZivkoF diyAudio Member Join Date: Jan 2011 Location: Ljubljana, Slovenia	Thanks epa for your help . I will try to sketch three folds in the TH today as far I have now datas for S1 (364,24 cm2), S2 (476,09 cm2), S3 (1790,78 cm2) and S4 (3556,32 cm2)..

8th April 2012, 05:48 PM	#8
ZivkoF diyAudio Member Join Date: Jan 2011 Location: Ljubljana, Slovenia	Hi epa, just instaled new Hornresp Version 29.00 my old didnt worked good. I need TH from some 18 Hz - 60 Hz ! I have 2 FLHs from 35 Hz - 140 Hz. Some new datas: S1=364,24; S2=476,09; S3=1032,48; S4=1493,37; S5=3556,32; and L12 Con=34,00; L23 Exp=200,00; L34 Con=190,00; L45 Con=120 which means Horn lenght is 544,00 cm.

8th April 2012, 06:17 PM	#9
epa diyAudio Member Join Date: Apr 2010 Location: amsterdam	remeber the system volume,you have to add 25 to 35% extra volume for pannels and corner losses. ie if the sym says 400 ltr the box wil be close to 600 ltrs in real live. if you have a sim i can (try)convert it to a model. __________________ one good thing about music ,when it hit you feel no pain. so hit me with music.

8th April 2012, 11:17 PM	#10
m R g S r diyAudio Member Join Date: Jan 2011	Josh Ricci has a horn designed around the B&C 21" monster, and I mentioned the RCF you have listed, and he said it didn't sim nicely in his horn... With that much surface area from the 21" driver, are you sure a Bass reflex tuned to 15hz or so wouldn't be enough?

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
Horn Build using a tapped horn as a frame??	3GGG	Multi-Way	1	17th January 2012 11:52 PM
Dayton SD315-88 Tapped Horn Build	killa12222	Subwoofers	11	15th June 2011 05:46 PM
Volvotreter 20Hz Tapped Horn build (pics)	RadiantNRG	Subwoofers	60	12th March 2011 07:18 PM
Lab 12 Tapped Horn, Ron's Austin II, T-Horn, CNC Photo Background	layertone	Subwoofers	15	23rd January 2010 05:12 AM
Ron's Austin II, old T-Horn, Lab12 Tapped horn, CNC Photo Background	layertone	Full Range	2	23rd December 2009 12:51 AM

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