Box Help Needed

[07BronzeFuz 10+ year member]

guys, I plan on getting 2 12" es12d PBX extreme's. These are the old school ones. I plan on porting the box but dont want to go over 4cu ft. I just dont think I can fit a slot port in it. I did the one on re's web site but dont know how wide I the port can be. I have seen some slot ports like 2" wide and some 6" wide. I need as little port in the box so it will not take up some much air space. Here are some spec on the woofers.

RMS Power Handling : 450 Watts

Peak Power Handling : 900 Watts

Frequency Response : 20Hz - 500Hz

Sensitivity : 89.9dB @ 1W/1M

Mounting Depth : 5.75" (133mm)

Cut-Out Diameter : 11.37" (289mm)

PARAMETERS

Fs : 29Hz

Qms : 6.1

Vas : (Liters) 76.4

Qms : 6.1

Qes : .43

Qts : .40

Nominal Imp (Ohms) : 4 ohms + 4 ohms

SPL 1w/1m (dB) : 89.9

SPL (2.83V/1m) : 95.1

X-Max (mm) one way : 9

Pe - RMS : 450 Watts

Pe - Maximum : 900 Watts

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