does increasing sealed sub encolsure volume increase spl?

[mac336 10+ year member]

My 8w1v2 is currently in a small sealed box. I find that it has trouble maintaining SPL at even the upper end of the low frequencies. Would getting a slightly bigger sealed box help with this? (I believe that the current box its in may be even smaller than what its recommended for).

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[jolly_26 10+ year member]

could definitely be worth going for a slightly bigger box, is there any reason you aren't going ported? Could be another option worth looking at

 

[Moble Enclosurs 10+ year member]

If the design is in less than recommended, then at 90 or 0 phase "tuning" of the sealed box can increase spl below that frequency at 90/0 degree phase response, and an increase in excursion will occur below that point, increasing spl, but decreasing spl above that. It is a tradeoff. Just have to make sure max excursion is not a factor below sealed "tuning" frequency. Other than that, yea, its worth putting it in a bigger box to increase lower end response output.

 

[06goat 10+ year member]

Ported if youre looking for more SPL. Dont get me wrong sealed subs can get loud but normally Ive found that larger sealed box= hitting lower frequencies. Maybe just try some polyfill to give you an Idea.

 

[mac336 10+ year member]

Mainly because I love how the sealed sounds. The 8w1v2 is inside the cab and plenty loud enough, my only complaint is the lack of low frequency. I dont even want really low freq, just reasonably low but the spl cuts out when it gets lower than midbass

I was thinking about going with a small ported sub, but I want to keep the tight bass and am afraid the ported will be alittle too loose for my taste

could definitely be worth going for a slightly bigger box, is there any reason you aren't going ported? Could be another option worth looking at

 

[trumpet 5,000+ posts]

Maybe just try some polyfill to give you an Idea.

Do this. The loose polyfill in the craft department at Walmart works great and it's about $3.50 a pound. Also, where is the box and where is the sub facing?

 

[mac336 10+ year member]

sub is facing forward in the backseat floor of the car

 

[mac336 10+ year member]

how much polyfill should I use? how do I get it to stick to the walls of the box?

 

[Chrispy 10+ year member]

how much polyfill should I use? how do I get it to stick to the walls of the box?

General rule of thumb is a half pound per cubic foot and you simply stuff the box full of it. No sticking or glueing required.