What Is a Proper Sub Box?

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Joined: November 01, 2003

Location: Alberta, Canada

Posted: April 21, 2006 at 2:46 PM / IP Logged

Dynamatting a sub box on the inside might not do too much as the material itself is designed to add mass to keep it from resonating. As a box should be constructed properly with the appropriate pieces of wood and bracing, resonation should not be that big an issue. If you are talking about a sound absorbtion material like bassline panelling or Black Hole material, then yes you can add this to the inside of the sub box.

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jlord16

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Posted: April 21, 2006 at 8:57 PM / IP Logged

I used brush on sound deadener on the inside of a fibreglass box and it seems to perform alittle better. the bass response is much the same but it appears that the woffer cone dosnt extrude as much as it did when there was no sound deadening, i dont know why this is.

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sab0276

Copper - Posts: 61

Joined: April 21, 2006

Location: United States

Posted: May 09, 2006 at 9:50 AM / IP Logged

If a sub box has a range of sub enclosure sizes, is it better to build to the smaller size or larger size if possible?

For example, lets say a 12" sub has a recommended sealed enclosure size of 1.25ft3, but a range of 1.25ft3 - 1.5ft3. Would it be better to build the box closer to 1.5ft3 if you have the room?

TIA.

-Scott

2002 GMC Yukon SLT non-Bose

Pioneer AVIC N3

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Platinum - Posts: 5,352

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Posted: May 09, 2006 at 11:15 AM / IP Logged

Generally speaking, the trend these days is to go as small as possible. Thus the manufacturer will list some box sizes that gives the lowest passable resluts for the smallest box. With a box that is too small, you have tight bass but little extension, with a box too large, you have lots of extension and no control.

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sab0276

Copper - Posts: 61

Joined: April 21, 2006

Location: United States

Posted: May 09, 2006 at 11:26 AM / IP Logged

Is there a page that explains those terms? I have a general understanding of them, but not enough to understand the differences and impact of them.

Thanks.

-Scott

2002 GMC Yukon SLT non-Bose

Pioneer AVIC N3

harobikes333

Copper - Posts: 53

Joined: May 08, 2009

Location: North Dakota, United States

Posted: July 29, 2009 at 5:52 PM / IP Logged

So forbidden, if my sub spec sheet calls for 1.5cf per chamber on a sealed application and says +- 10 % I can use a 2.7cf box if I have a dual 12" box?

I haven't been able to find a 3cf sealed dual 12" box.

ianarian

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Posted: July 29, 2009 at 6:50 PM / IP Logged

Sweet post. Concepts that matter.

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boxhead78

Copper - Posts: 84

Joined: October 07, 2009

Location: California, United States

Posted: October 09, 2009 at 10:46 AM / IP Logged

the proper box is a sealed box

boxead78

1967type-1

Member - Posts: 5

Joined: November 06, 2009

Location: Maryland, United States

Posted: November 06, 2009 at 11:38 PM / IP Logged

Jason 358,

Dynamatting the inside of your box won't get rid of port noise.The box isn' causing the noise,the port is.

Make sure that your port is the correct size,and you could try a different shaped port.

Some suppliers sell flared ports that are surposed to help reduce port noise.

Also don't forget that the port is how your box is tuned,as I understand it until you start playing at the resonant frequency the port is actually making the bass.

(o\_|_/o)

67 Volkswagen Type-1 {Beetle}

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1967type-1

Member - Posts: 5

Joined: November 06, 2009

Location: Maryland, United States

Posted: November 06, 2009 at 11:43 PM / IP Logged

sab0276,

A smaller box will allow you to handle more power,but it doesn't reproduce really low bass.On the other hand,a larger box will play lower bass,but doesn't handle as much power.That is using the same woofer in both size enclosures..

(o\_|_/o)

67 Volkswagen Type-1 {Beetle}

Alpine CDA-7995

AudioControlEpicenter,ESP, EQL,2XS,Alpine 2 MRV-1000,MRV-F-400,Alpine R-10 Element Triple Enclosure,R-8,Kicker MB-100,2 Alpine 6.5 compoment

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