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Bertha BH-882 Build
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Laurin View Drop Down
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Joined: 10 July 2006
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Points: 182 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Laurin Quote  Post ReplyReply Direct Link To This Post Posted: 13 April 2013 at 12:24pm
Originally posted by Lee In Montreal Lee In Montreal wrote:

Originally posted by nomercy82 nomercy82 wrote:

Post pictures when you're done. I'm curious about your design. How does a 1 foot extension of horn length make up for a 3 foot hyperbolic extension?


Like that. With a 36" deep extension, it makes it "theorically" a 21Hz horn once the back chamber and throat size are tuned for a JBL 2242. Without the extension, it is a 27Hz horn for a 1/4 wave. Theorically. ;-)




Hey Lee Richard had something like this but 96" wide.
It was called the model D.

http://www.wavemusic.com/community/showthread.php?t=7511&highlight=emerald

My next step will be a version with two 21".  
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Lee In Montreal View Drop Down
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Points: 345 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Lee In Montreal Quote  Post ReplyReply Direct Link To This Post Posted: 13 April 2013 at 12:33pm
A local shop has 96 x  2242H woofers at $299.00 a pop. i'm picking a pair this week to use with this project.
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MrZuarth View Drop Down
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Points: 107 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MrZuarth Quote  Post ReplyReply Direct Link To This Post Posted: 13 August 2013 at 1:52am
Sorry a question, you did height of 21 inches?
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MrZuarth View Drop Down
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Sorry a question, you did height of 21 inches?
 
Originally posted by Audio_AL Audio_AL wrote:


View of the driver after being glued in place.

Outer shell in place.

Last side and 45 degree reflectors in place.

Got a little creative with the braces  :)

Braces from behind.

And a shot from the front.

Im hoping to have the top on and begin testing today. More pics soon.
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Audio_AL View Drop Down
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Points: 244 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Audio_AL Quote  Post ReplyReply Direct Link To This Post Posted: 13 August 2013 at 3:59am
Originally posted by MrZuarth MrZuarth wrote:

Sorry a question, you did height of 21 inches?
  

I don't remember exactly but I think it was close to 21 inches Yes.
Make it loud!
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CritikalMass View Drop Down
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Update on the second build! Perhaps a video ?
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UpComingSound View Drop Down
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Points: 393 		Post Options Post Options   Thanks (0) Thanks(0)   Quote UpComingSound Quote  Post ReplyReply Direct Link To This Post Posted: 26 October 2016 at 2:28pm
Originally posted by MrZuarth MrZuarth wrote:

Audio AL how did these cabinets sound ?
Sorry a question, you did height of 21 inches?
 
Originally posted by Audio_AL Audio_AL wrote:


View of the driver after being glued in place.

Outer shell in place.

Last side and 45 degree reflectors in place.

Got a little creative with the braces  :)

Braces from behind.

And a shot from the front.

Im hoping to have the top on and begin testing today. More pics soon.
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UpComingSound View Drop Down
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Joined: 21 June 2006
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Points: 393 		Post Options Post Options   Thanks (0) Thanks(0)   Quote UpComingSound Quote  Post ReplyReply Direct Link To This Post Posted: 26 October 2016 at 9:18pm
how do a single bertha compare to other single horn loaded 18 inch subs ?
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Lee In Montreal View Drop Down
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Points: 345 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Lee In Montreal Quote  Post ReplyReply Direct Link To This Post Posted: 26 October 2016 at 10:14pm
The Bertha/Levan horn goes much lower.
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bob4 View Drop Down
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Points: 1678 		Post Options Post Options   Thanks (0) Thanks(0)   Quote bob4 Quote  Post ReplyReply Direct Link To This Post Posted: 27 October 2016 at 1:09pm
it's almost twice the size of a WSX...... Shocked
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Lee In Montreal View Drop Down
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Points: 345 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Lee In Montreal Quote  Post ReplyReply Direct Link To This Post Posted: 27 October 2016 at 4:22pm
Sure, But nothing comes for free. Can't beat the laws of physics. To get deep bass, one needs larger volumes. And who cares if those bins are huge, they aren't meant to be moved around. ;-)

Lee
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Dub Specialist Sound View Drop Down
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Points: 4873 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Dub Specialist Sound Quote  Post ReplyReply Direct Link To This Post Posted: 27 October 2016 at 7:10pm
I love big speaker boxs
Musical Roots Reggae Vibration is Life! for music is sound...sound is vibration...vibration is energy... and energy begets life. Therein lies my passion!...MUSIC IS LIFE...
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