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Speaker box building software (free)
RichP714Offline
#1 Posted: Saturday, February 14, 2009 12:15:33 PM(UTC)
 
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RichP714

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This is a fairly decent and free package for designing/building closed, ported, and bandpass boxes. Very helpful if you are designing your own subwoofer box, etc.

http://www.subwoofer-builder.com/WinISD.htm

Enjoy!

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------http://zeropointe.thecarversite.com----------------------http://carvermk2.com---------------


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#2 Posted: Friday, November 6, 2009 8:02:05 PM(UTC)
 
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Looks like a good program.
But couldn't see anything about actual Box Dimensions, just box volume.
After building speakers for over 35 years, I'v found a sealed box packed almost full of damping (insulation) worked best. Its less colored (no bump at some freq.) and goes down lower into subsonic. The bigger the box, the better. Most quality woofers specify a nominal sealed box volume. This can be reduced to 75%, limiting max output a little at high levels.
The biggest mistake I see is someone making a box with all 3 dimensions the same (a cube)!? Although the wavelength at 20hz is bigger than many rooms, harmonics still happen. All 3 box dimensions should be different or the 3 standing waves will be the same fequency. You better like that frequency at lot.
Rich / Calgary
 
RichP714Offline
#3 Posted: Friday, November 6, 2009 9:42:24 PM(UTC)
 
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RichP714

Medals:
Yin Yang: Black Pearl device for multiple award; participated in audio KarmaZeroPointe: Black Pearl device for multiple award; audio tools ownerBill D modified: audio equipment owner

Rank: Vendor


Groups: Dev, Retired

Joined: 12/20/2008(UTC)
Posts: 4,816
Location: Gretna, NE

Was thanked: 853 time(s) in 536 post(s)
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Wizard wrote:
Looks like a good program.
But couldn't see anything about actual Box Dimensions, just box volume.
After building speakers for over 35 years, I'v found a sealed box packed almost full of damping (insulation) worked best. Its less colored (no bump at some freq.) and goes down lower into subsonic. The bigger the box, the better. Most quality woofers specify a nominal sealed box volume. This can be reduced to 75%, limiting max output a little at high levels.
The biggest mistake I see is someone making a box with all 3 dimensions the same (a cube)!? Although the wavelength at 20hz is bigger than many rooms, harmonics still happen. All 3 box dimensions should be different or the 3 standing waves will be the same fequency. You better like that frequency at lot.
Rich / Calgary
 
 
Rich, to manipulate the box dimensions click on the 'box shape' button in the Box tab.......
 
You can then enter parameters you need (like width if it's going to go in a trunk) and it will solve for the others.
 
 
Enjoy!

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------http://zeropointe.thecarversite.com----------------------http://carvermk2.com---------------


elgrauOffline
#4 Posted: Friday, November 6, 2009 10:17:33 PM(UTC)
 
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"Box"?? Who builds "boxes"?! 
Common sources: 300 disk changer/reader with optical link to EnTech 205.2 DAC; Technics SL-1100A TT. QED Quenx1 1M IC's from EnTech to Adcom GTP-602 preamp/tuner (with phono amp).
Family Room: AudioQuest King Cobra 1M IC's from Adcom preamp to TFM-42. QED Silver Spirals 4M wires to Epicure (EPI) 1000 towers.
Living Room: AudioQuest Black Mamba 8M IC's from family room Adcom preamp to Barcus-Berry 2002R Sonic Maximizer to GlowPower Zyxt IC's to Sunfire 300x2. Nordost Solar Wind 6M wires to bi-wired "AOS" (Audio Orb SpeakersTM) 28" Dia. x 1.0"/1.5" thick MDF shell spherical speakers each using six 6.5" EPI woofers and eight 1" EPI inverted dome tweeters symmetrically arranged around the sphere's surface. Surrond Sound: AV-705x five channel amp (center, rears), TFM-42 (fronts).
Garage: TLM-3600 CDP to MXR-150 Receiver to M1.0t to EPI 400 speakers.
RichP714Offline
#5 Posted: Friday, November 6, 2009 10:55:12 PM(UTC)
 
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RichP714

Medals:
Yin Yang: Black Pearl device for multiple award; participated in audio KarmaZeroPointe: Black Pearl device for multiple award; audio tools ownerBill D modified: audio equipment owner

Rank: Vendor


Groups: Dev, Retired

Joined: 12/20/2008(UTC)
Posts: 4,816
Location: Gretna, NE

Was thanked: 853 time(s) in 536 post(s)
Gave Thanks: 401 times

Those who haven't mastered the secret of the Spheres
Enjoy!

-
------http://zeropointe.thecarversite.com----------------------http://carvermk2.com---------------


Guest
#6 Posted: Saturday, November 7, 2009 12:07:29 PM(UTC)
 
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I went to the site and looked it over. Didn't actually download and test the program. Looks good.
 
I would use Cubic Inches (15" woofer = 8000"^3, 12"=4000"^3, 10"=3000"^3,,..) rather than deal with decimals (2.237ft^3),,.. same difference.
I kept the longest dimension under 3.5ft to keep down standing waves.
 
Yup, I built boxes. Haven't built anything for a while. They did sound excellent. Have done a lot of woofer surround repair though. And capacitor replacements in passive crossovers.
 
Some of the DIY speakers here are stunning. Amazing woodworking. Makes me wanna start up again, just wish the garage wasn't frozen for 1/2 the year,,..
Darn, those ideas for new designs are flooding back,,.. you guys are a bad influence,,..
 
Rich / Calgary
elgrauOffline
#8 Posted: Saturday, November 7, 2009 12:34:38 PM(UTC)
 
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yep; just kidding...I build boxes, too. And the EPI 1000's I built still hold the "crown" in my house! The only deviation I made from "factory" specs was the addition of a hardwood cross brace at the smallest "link" between the woofer and tweeter cutouts on these 360 deg 6' towers. And I verified via FEM analysis that this bracing did indeed raise the box's fundamental frequency mode (the main advantage other than "spherical dispersion" that my spheres have over a "box' design: very high fundamental mode due to the natural efficiency (stiffness wise) of "shells" vs flat plates!) -Ed
Common sources: 300 disk changer/reader with optical link to EnTech 205.2 DAC; Technics SL-1100A TT. QED Quenx1 1M IC's from EnTech to Adcom GTP-602 preamp/tuner (with phono amp).
Family Room: AudioQuest King Cobra 1M IC's from Adcom preamp to TFM-42. QED Silver Spirals 4M wires to Epicure (EPI) 1000 towers.
Living Room: AudioQuest Black Mamba 8M IC's from family room Adcom preamp to Barcus-Berry 2002R Sonic Maximizer to GlowPower Zyxt IC's to Sunfire 300x2. Nordost Solar Wind 6M wires to bi-wired "AOS" (Audio Orb SpeakersTM) 28" Dia. x 1.0"/1.5" thick MDF shell spherical speakers each using six 6.5" EPI woofers and eight 1" EPI inverted dome tweeters symmetrically arranged around the sphere's surface. Surrond Sound: AV-705x five channel amp (center, rears), TFM-42 (fronts).
Garage: TLM-3600 CDP to MXR-150 Receiver to M1.0t to EPI 400 speakers.
RichP714Offline
#7 Posted: Saturday, November 7, 2009 1:10:53 PM(UTC)
 
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RichP714

Medals:
Yin Yang: Black Pearl device for multiple award; participated in audio KarmaZeroPointe: Black Pearl device for multiple award; audio tools ownerBill D modified: audio equipment owner

Rank: Vendor


Groups: Dev, Retired

Joined: 12/20/2008(UTC)
Posts: 4,816
Location: Gretna, NE

Was thanked: 853 time(s) in 536 post(s)
Gave Thanks: 401 times

Wizard wrote:
I went to the site and looked it over. Didn't actually download and test the program. Looks good.
 
I would use Cubic Inches (15" woofer = 8000"^3, 12"=4000"^3, 10"=3000"^3,,..) rather than deal with decimals (2.237ft^3),,.. same difference.
 
You can also change units by clicking on them
Enjoy!

-
------http://zeropointe.thecarversite.com----------------------http://carvermk2.com---------------


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