Dual 18 bass reflex.

simpleacoustic · 27th February 2011, 10:33 PM

My first successful trial and error bass reflex for selenium 18sw2p 5 yrs old.
bass1.jpg

micb · 28th February 2011, 07:29 PM

What are the specs of the enclosure?

simpleacoustic · 1st March 2011, 01:41 PM

The dimentions are 43.75x 29.5x 24.75 h x w x d
Drivers are separated with each port being 13.75 x 5.75 x 1.5 reinforced on edges with 1".
The rear deflectors are 4 61/65" wide at 45 degrees.
The braces are 4" wide. at center of each chamber .

I don't have a spec. sheet so that's all I can give for now micb.

micb · 1st March 2011, 04:19 PM

So did you tune the ports to a specific frequency?

simpleacoustic · 01:11 AM

"successful trial and error" I did not use any program to calc. tuning freq. but I get lows from about 35-40 hz. I xover at 60hz and eq. up around 40hz.
I use two together ,they give tight ,punchy and deep bass outdoors and kicks *** indoors!!

162805_10150124186255801_570745800_8145859_881512_n.jpg

Samuel Jayaraj · 2nd March 2011, 11:19 AM

So what are you trying to say? Make a statement; show a design with no specifics; or just want a display gallery?

simpleacoustic · 2nd March 2011, 08:03 PM

"show a design with no specifics"....Do the math if u like, see if its true ,was just lucky it worked out well and wanted to share,is that illegal?I was not looking at the forum rules ,sorry!!

Samuel Jayaraj · 2nd March 2011, 08:09 PM

Quote:

Originally Posted by simpleacoustic

"show a design with no specifics"....Do the math if u like, see if its true ,was just lucky it worked out well and wanted to share,is that illegal?I was not looking at the forum rules ,sorry!!

That's fine. Perhaps, you would like to hang around and learn how to use freely available software to simulate more predictable/repeatable builds.

simpleacoustic · 08:17 PM

I've just started looking at horn response ,and winisd but I did not plug in this design yet .Still need to understand it some more.
It's not as simple as I thought.

revboden · 2nd March 2011, 09:28 PM

A short guide to using WinISD PRO, Get the Thiele-Small specs for your drivers, fire up WinISD pro, put it in half screen (left side of screen) click on the help menu at the top of the window, click "getting started", expand "using winISD pro", click on "entering new driver data", scroll down about half way to "The suggested procedure for entering driver parameters is following", follow instructions. have fun

27th February 2011, 10:33 PM	#1
simpleacoustic diyAudio Member Join Date: Mar 2010	Dual 18 bass reflex. My first successful trial and error bass reflex for selenium 18sw2p 5 yrs old. bass1.jpg

2nd March 2011, 01:05 AM	#5
simpleacoustic diyAudio Member Join Date: Mar 2010	"successful trial and error" I did not use any program to calc. tuning freq. but I get lows from about 35-40 hz. I xover at 60hz and eq. up around 40hz. I use two together ,they give tight ,punchy and deep bass outdoors and kicks *** indoors!! 162805_10150124186255801_570745800_8145859_881512_n.jpg Last edited by simpleacoustic; 2nd March 2011 at 01:11 AM.

2nd March 2011, 11:19 AM	#6
Samuel Jayaraj diyAudio Member Join Date: May 2001 Location: Bangalore, India	So what are you trying to say? Make a statement; show a design with no specifics; or just want a display gallery? __________________ Sam

2nd March 2011, 08:15 PM	#9
simpleacoustic diyAudio Member Join Date: Mar 2010	I've just started looking at horn response ,and winisd but I did not plug in this design yet .Still need to understand it some more. It's not as simple as I thought. Last edited by simpleacoustic; 2nd March 2011 at 08:17 PM.

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28th February 2011, 07:29 PM	#2
micb diyAudio Member Join Date: Aug 2004 Location: UK	What are the specs of the enclosure?

1st March 2011, 01:41 PM	#3
simpleacoustic diyAudio Member Join Date: Mar 2010	The dimentions are 43.75x 29.5x 24.75 h x w x d Drivers are separated with each port being 13.75 x 5.75 x 1.5 reinforced on edges with 1". The rear deflectors are 4 61/65" wide at 45 degrees. The braces are 4" wide. at center of each chamber . I don't have a spec. sheet so that's all I can give for now micb.

1st March 2011, 04:19 PM	#4
micb diyAudio Member Join Date: Aug 2004 Location: UK	So did you tune the ports to a specific frequency?

2nd March 2011, 08:03 PM	#7
simpleacoustic diyAudio Member Join Date: Mar 2010	"show a design with no specifics"....Do the math if u like, see if its true ,was just lucky it worked out well and wanted to share,is that illegal?I was not looking at the forum rules ,sorry!!

2nd March 2011, 09:28 PM	#10
revboden diyAudio Member Join Date: Feb 2011	A short guide to using WinISD PRO, Get the Thiele-Small specs for your drivers, fire up WinISD pro, put it in half screen (left side of screen) click on the help menu at the top of the window, click "getting started", expand "using winISD pro", click on "entering new driver data", scroll down about half way to "The suggested procedure for entering driver parameters is following", follow instructions. have fun

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