sonotube sub help

derek_murray · 09-28-2005, 09:57 AM

Trying to build my first sub and am running into some problems. I downloaded winisd and it isn't very hard to use. It is however annoying to have to translate from meters to inches. Is there a version that does estimates in inches? I am going to use a extra sub from my car a polk audio db 124 it really doesn't seem to model very bad -3db at 18 hz. I need a 126.9L inclosure and i would like to try a sonotube sub because it seems cheap and easy. If the performance is good than i will probably make a box and make it look good. I need to know what size sonotube and how long i will need?

thanks,
derek murray

tryrrthg · 09-28-2005, 10:17 AM

In winISD you can just click on the meters or whatever unit of measure it is using and it will switch from one to the other.

Here is nice little tool for cutting your sonotube to the right length.

http://www.quux.net/roo/diy/sonosub/sonocalc.html

unc2701 · 09-28-2005, 11:08 AM

Another trick that comes in handy:
google will convert most units- just run a search like:
126.9 liters in cubic inches
and it'll return the result

gatemplin · 09-28-2005, 12:36 PM

Dump WinISD. Try the FRD tool Unibox. I have designed a few enclosures with it and then tested them. They were accurate to within 1 Hz of the desired tuning frequency.

http://www.pvconsultants.com/audio/frdgroup.htm

tryrrthg · 09-28-2005, 12:42 PM

Quote:

Originally Posted by gatemplin

Dump WinISD. Try the FRD tool Unibox. I have designed a few enclosures with it and then tested them. They were accurate to within 1 Hz of the desired tuning frequency.

http://www.pvconsultants.com/audio/frdgroup.htm

I agree. I like to use WinISD pro to look at multiple alignments, and then when I choose one I go to Unibox for fine "tuning" (pun intended)

gatemplin · 09-28-2005, 01:09 PM

Quote:

Originally Posted by tryrrthg

I go to Unibox for fine "tuning" (pun intended)

Well done my friend.

derek_murray · 10-04-2005, 06:47 PM

is there anyone who can help me work through the unibox program. it is completely over my head.

gatemplin · 10-04-2005, 07:32 PM

What are you having a problem with?

If you dont know the terms and acronyms mean you might want to pick up a speaker design book.

If you have specific questions I can try to help.

09-28-2005, 09:57 AM	#1
derek_murray Polkie Member Sales Rating: (1) Join Date: May 2004 Location: alpharretta, georgia Posts: 41	sonotube sub help Trying to build my first sub and am running into some problems. I downloaded winisd and it isn't very hard to use. It is however annoying to have to translate from meters to inches. Is there a version that does estimates in inches? I am going to use a extra sub from my car a polk audio db 124 it really doesn't seem to model very bad -3db at 18 hz. I need a 126.9L inclosure and i would like to try a sonotube sub because it seems cheap and easy. If the performance is good than i will probably make a box and make it look good. I need to know what size sonotube and how long i will need? thanks, derek murray

09-28-2005, 10:17 AM	#2
tryrrthg Polkhead Member Sales Rating: (11) Join Date: Jul 2001 Location: Columbus, Ohio Posts: 1,799	In winISD you can just click on the meters or whatever unit of measure it is using and it will switch from one to the other. Here is nice little tool for cutting your sonotube to the right length. http://www.quux.net/roo/diy/sonosub/sonocalc.html __________________ The Had My First Child, Have To "Give Up" My Stereo Room, Condensed Two Channel & HT Rig: Mains: Dynaudio Focus 140 Integrated Amp: Arcam A85 Source: Slim Devices Squeezebox 3 -> Bel Canto DAC 1.1 Home Theater: Sony KDL-40V2500 HDTV, Sony BDP-S550 Blu-ray, Polk CSi3 & R15, Denon 2802 receiver, and DIY sub with Atlas 15

09-28-2005, 11:08 AM	#3
unc2701 Polkologist Member Sales Rating: (4) Join Date: Feb 2005 Posts: 2,829	Another trick that comes in handy: google will convert most units- just run a search like: 126.9 liters in cubic inches and it'll return the result __________________ Gallo Ref 3.1 : Bryston 4b SST : Musical fidelity CD Pre : VPI HW-19 Gallo Ref AV, Frankengallo Ref 3, LC60i : Bryston 9b SST : Meridian 565 Jordan JX92s : MF X-T100 : Xray v8 Backburner:Krell KAV-300i

10-04-2005, 07:32 PM	#8
gatemplin Polkhead Member Sales Rating: (1) Join Date: Mar 2003 Posts: 1,591	What are you having a problem with? If you dont know the terms and acronyms mean you might want to pick up a speaker design book. If you have specific questions I can try to help. __________________ Graham

Thread Tools
Show Printable Version Email this Page
Rate This Thread
Rate This Thread:

09-28-2005, 12:36 PM	#4
gatemplin Polkhead Member Sales Rating: (1) Join Date: Mar 2003 Posts: 1,591	Dump WinISD. Try the FRD tool Unibox. I have designed a few enclosures with it and then tested them. They were accurate to within 1 Hz of the desired tuning frequency. http://www.pvconsultants.com/audio/frdgroup.htm

10-04-2005, 06:47 PM	#7
derek_murray Polkie Member Sales Rating: (1) Join Date: May 2004 Location: alpharretta, georgia Posts: 41	is there anyone who can help me work through the unibox program. it is completely over my head.

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