For glass - vmax vs. shiva


how would the vmax have more spl than the shiva when the shive has 16mm xmax ONE WAY and the vmax has 20mm PEAK TO PEAK?

Gold Member
Username: Glasswolf

NorthWest, Michigan USA

Post Number: 4864
Registered: Dec-03
it wouldn't.
the shiva works ideally with about 350-500wRMS for the 12".


Bronze Member
Username: Thumprms


Post Number: 34
Registered: May-04
thanks glass,
is it possible to buy a prefab box and drill a hole in it for a port? For example:could i buy a 2.50 cu ft box, drill a hole for a 4'' pvc pipe. put the port in and tune it to 32 Hz? if so what would the length of the port need to be?

Gold Member
Username: Jonathan_f


Post Number: 2376
Registered: May-04
I highly doubt you could find a prefab for a 12" that's 2.5 cu ft. If you could, remember that you'd have to compensate since that 2.5 will be gross volume, any length you add to the port will subtract from the net volume of the box. Use the calculator on to find out what length you'll need.

Gold Member
Username: Glasswolf

NorthWest, Michigan USA

Post Number: 4882
Registered: Dec-03
you can buy a ported box and just trim the port tube(s) to desired length to tune the box for your sub(s). has some pretty solid boxes for next to nothing. theirs should be tunable.
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