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Need suggestions for my new boxysub (1 Viewer)

Mark Larson

Supporting Actor
Joined
Mar 3, 2002
Messages
537
I already have a cabinet, and want to make a sub to rock the place! :D
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 :eek:
16 hz ---> -14.01 dB :eek: :eek:
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

Senior HTF Member
Joined
Nov 6, 1999
Messages
2,282
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

Supporting Actor
Joined
Mar 3, 2002
Messages
537
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

Senior HTF Member
Joined
Jun 30, 1999
Messages
39,408
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.
 

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