My newest toy (in making) - Page 3

TundraLTD · 14th July 2012, 07:53 PM

I was thinking I might use a dark stain and trace the internal walls on the front and back, then go over the entire box with a lighter stain and give it a satin finish. I hate painting wood unless its ugly and full of knots. I thought about trying to do a tabacco burst (guitar style) but I think that would just be WAY to much work for something this size

bappe · 14th July 2012, 08:12 PM

Nice indeed!
Why the foam strips? All you would want is stiff, hard suffices. Or am i missing something here?

BR,
Anders

TundraLTD · 14th July 2012, 09:01 PM

After studying many designs and playing with Akabak's visc settings I figured better safe then sorry since once the box is glued closed I can't get back in to add anything. After I made a pair of 12" TH enclosures I added some foam where I could to kill some resonance issues

bappe · 14th July 2012, 09:09 PM

I see. Personally i never saw the reason for this kind of damping in a pure bass speaker and especially in a horn, unless one adds it for the purpose of flow resistance of course. Be careful not to add to much, especially near the throat. What range will you use this one in?

//A

bappe · 14th July 2012, 09:13 PM

One thing that will do good though is to add concrete in the cavity near the throat. It is a VERY sensitive part of any horn and anything going wrong there will be amplified by the horn.

//A

TundraLTD · 15th July 2012, 01:45 AM

This thing is ridiculous! And HEAVY! filling cavities with concrete ain't happening. The woofer is barely moving and stuff all over the house is rattling and coming off the walls. I'm exhausted, Not sure when I'll get it outside to test it with this evil heat. Only thing I'd change at the moment is giving myself an extra 1/4" clearance for the woofer, it was a chore getting it into place. Glad I went with SS allen head bolts!

LarryMcConville · 17th July 2012, 04:12 PM

House still standing:-)

TundraLTD · 12:27 AM

Quote:

Originally Posted by LarryMcConville

House still standing:-)

Not for long (I hope) hahaha. I already split a seem in the ceiling

kevinkr · 18th July 2012, 12:37 AM

Oops.. Very cool project and very nicely executed.

Djim · 18th July 2012, 02:18 AM

It must be a comfort thought that if you go on tearing down your house you still have the possibility to go live in a box…

18th July 2012, 12:37 AM	#29
kevinkr diyAudio Moderator Join Date: Sep 2004 Location: Boston, Massachusetts Blog Entries: 6	Oops.. Very cool project and very nicely executed. __________________ "Extraordinary claims require extraordinary evidence." - Carl Sagan

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14th July 2012, 07:53 PM	#21
TundraLTD diyAudio Member Join Date: Dec 2009	I was thinking I might use a dark stain and trace the internal walls on the front and back, then go over the entire box with a lighter stain and give it a satin finish. I hate painting wood unless its ugly and full of knots. I thought about trying to do a tabacco burst (guitar style) but I think that would just be WAY to much work for something this size

14th July 2012, 08:12 PM	#22
bappe diyAudio Member Join Date: Sep 2002 Location: Furulund, SWEDEN	Nice indeed! Why the foam strips? All you would want is stiff, hard suffices. Or am i missing something here? BR, Anders

14th July 2012, 09:01 PM	#23
TundraLTD diyAudio Member Join Date: Dec 2009	After studying many designs and playing with Akabak's visc settings I figured better safe then sorry since once the box is glued closed I can't get back in to add anything. After I made a pair of 12" TH enclosures I added some foam where I could to kill some resonance issues

14th July 2012, 09:09 PM	#24
bappe diyAudio Member Join Date: Sep 2002 Location: Furulund, SWEDEN	I see. Personally i never saw the reason for this kind of damping in a pure bass speaker and especially in a horn, unless one adds it for the purpose of flow resistance of course. Be careful not to add to much, especially near the throat. What range will you use this one in? //A

14th July 2012, 09:13 PM	#25
bappe diyAudio Member Join Date: Sep 2002 Location: Furulund, SWEDEN	One thing that will do good though is to add concrete in the cavity near the throat. It is a VERY sensitive part of any horn and anything going wrong there will be amplified by the horn. //A

15th July 2012, 01:45 AM	#26
TundraLTD diyAudio Member Join Date: Dec 2009	This thing is ridiculous! And HEAVY! filling cavities with concrete ain't happening. The woofer is barely moving and stuff all over the house is rattling and coming off the walls. I'm exhausted, Not sure when I'll get it outside to test it with this evil heat. Only thing I'd change at the moment is giving myself an extra 1/4" clearance for the woofer, it was a chore getting it into place. Glad I went with SS allen head bolts!

17th July 2012, 04:12 PM	#27
LarryMcConville diyAudio Member Join Date: Feb 2011	House still standing:-)

18th July 2012, 02:18 AM	#30
Djim diyAudio Member Join Date: Dec 2009 Location: 'Ollanda	It must be a comfort thought that if you go on tearing down your house you still have the possibility to go live in a box…