Need suggestions for my new boxysub (1 Viewer)

[Mark Larson]

I already have a cabinet, and want to make a sub to rock the place!
The internal volume is 1.8 cu ft - it is actually an old speaker of some sort.
I know you shouldn't work with a pre-defined size, but if i go full DIY, it'll end up costing me $$$.
So, for now, the plan is to use a SVS original driver, power it with a 250W plate, and some calculations with WinISD show this:
Sealed:
60 hz ---> -2 dB
30 hz ---> -5.5 dB
20 hz ---> -8.9 dB
Vented with 25 hz tuning:
60 hz ---> -0.4 dB
30 hz ---> 3.92 dB
20 hz ---> -4.65 dB
16 hz ---> -14.01 dB
Any recommendations on what i can do? I got the T/S parameters from another post:
Fs/21 hz
Qts/0.38
Qes/0.39
Qms/6.6
Vas/4.6
Re/3.2

 

[ThomasW]

Any recommendations on what i can do?

Yes you can get a driver with a MUCH lower Vas, that would be more appropriate for a box that small.

Bop over to the Parts Express website and grab the T/S parameters for the DVC 12" and or look at the Blueprint 1203.....

 

[Mark Larson]

Thanks.
What kind of Vas / other parameters am i looking at for a box that small?
What would happen if i stuck the driver in there anyway? Overheating? Bottoming out?

 

[Patrick Sun]

If you're adamant about using the SVS driver in that small of a box, I'd just use it in a sealed box and roll the dice on room gain to fill in the bottom end. I have one in a sealable 2.5 ft^3 box and it does okay.

 

[ThomasW]

What kind of Vas / other parameters am i looking at for a box that small?

Look at the parameters for the drivers I described. These 2 drivers have a low Vas. Primarily that's what's needed for use with a small box.