subwoofer box bracing

fudplayers · 7th April 2011, 05:07 PM

hello everyone,new to diyaudio. i have a question that might be posted already but i havent found it. i bought a used home powered sub,the allison al-10. i wasnt happy after playing it for a while with the sound. i bought a dayton classic 10" 4ohm sub from parts express to replace the allison sub. the dayton sounds nice, the probably i am having is the box rattles like crazy. ive been trying to think of a way to brace the box,and since its prebuilt,not sure it will be possible since i only have a hole thats around 10" to get the braces in. so the question is, is there a method to brace with limited space to work with? the box came with a few skinny pieces of polyfill,ive added almost a pound of polyfill to the box. also,being that the box is ported,the port runs a good 10" i would guess into the inside of the box. i'm getting the feeling that i will have to build my own (which i am no carpenter by any stretch,and dont have the tools to do it) or buy a prefab box from parts express. not sure what to do?

18Hurts · 7th April 2011, 09:56 PM

I would measure out the box and compare it to the spec sheet on the Dayton.

Can the plate amp be removed to gain access to the inside of the box? Maybe by pulling out the amp and the woofer then a brace can be more easily installed.

purplepeople · 7th April 2011, 10:02 PM

Put your bracing ribs on the outside... in a pattern like Rubic's Cube, then cover to suit.

:)ensen.

18Hurts · 7th April 2011, 10:56 PM

True,

Or you can cut up some 1/2" MDF or plywood and make "new" sides which will make the walls thicker and not vibrate.

fudplayers · 8th April 2011, 12:35 AM

Thanks for the info. I put 3,1inch square dowel rods in it and also ran as much silicone caulk as I could around the the interior,guess I will see if that works after it dries. I may go ahead and brace the outside and add another face to the front to attach the sub. I may also attach mdf to the outside braces and they cover it all. Thanks once again for the quick replies.

7th April 2011, 05:07 PM	#1
fudplayers diyAudio Member Join Date: Apr 2011	subwoofer box bracing hello everyone,new to diyaudio. i have a question that might be posted already but i havent found it. i bought a used home powered sub,the allison al-10. i wasnt happy after playing it for a while with the sound. i bought a dayton classic 10" 4ohm sub from parts express to replace the allison sub. the dayton sounds nice, the probably i am having is the box rattles like crazy. ive been trying to think of a way to brace the box,and since its prebuilt,not sure it will be possible since i only have a hole thats around 10" to get the braces in. so the question is, is there a method to brace with limited space to work with? the box came with a few skinny pieces of polyfill,ive added almost a pound of polyfill to the box. also,being that the box is ported,the port runs a good 10" i would guess into the inside of the box. i'm getting the feeling that i will have to build my own (which i am no carpenter by any stretch,and dont have the tools to do it) or buy a prefab box from parts express. not sure what to do?

7th April 2011, 10:02 PM	#3
purplepeople diyAudio Member Join Date: Mar 2003 Location: London, Ontario, Canada	Put your bracing ribs on the outside... in a pattern like Rubic's Cube, then cover to suit. :)ensen. __________________ Those who claim to be making history are often the same ones repeating it.

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7th April 2011, 09:56 PM	#2
18Hurts diyAudio Member Join Date: Nov 2010	I would measure out the box and compare it to the spec sheet on the Dayton. Can the plate amp be removed to gain access to the inside of the box? Maybe by pulling out the amp and the woofer then a brace can be more easily installed.

7th April 2011, 10:56 PM	#4
18Hurts diyAudio Member Join Date: Nov 2010	True, Or you can cut up some 1/2" MDF or plywood and make "new" sides which will make the walls thicker and not vibrate.

8th April 2011, 12:35 AM	#5
fudplayers diyAudio Member Join Date: Apr 2011	Thanks for the info. I put 3,1inch square dowel rods in it and also ran as much silicone caulk as I could around the the interior,guess I will see if that works after it dries. I may go ahead and brace the outside and add another face to the front to attach the sub. I may also attach mdf to the outside braces and they cover it all. Thanks once again for the quick replies.