Box size for 21's

[Silent 0]

What are we looking at for airspace on the 21's. I am kinda tossed between the DP 18 and 21. It really is gonna come down to space.

[Incriminator 16]

What are we looking at for airspace on the 21's. I am kinda tossed between the DP 18 and 21. It really is gonna come down to space.

Here is the chart!

Woofer: Sealed: Ported: Port Area: Average:

DP 12 Not Recommend 1.75-3.00 cuft 20-48 inches 2.5 cuft / 35 inches / 28-40 Hz

DP 15 Not Recommend 3.00-5.00 cuft 36-80 inches 4.0 cuft / 55 inches / 28-40 Hz

DP 18 Not Recommend 5.00-7.50 cuft 60-120 inches 6.5 cuft / 90 inches / 28-40 Hz

DP 21 Not Recommend 7.50-10.00 cuft 90-160 inches 8.5 cuft / 120 inches / 28-40 Hz

Thanks,

Nick