It will depend alot on what amps are you going to run what will be your power supply so you can figure out how much power your w7s will recieve so you can base your box to compensate for you have. but heres some specs on boxes i have built at my shop for customers. all of them are to spec for JL Audio which i learned from my JL dealer. If your gonna do something ported for one w7....Cubic feet does not include the Driver displacement
Ported tuned to 35.33 HZ
-Wall Thickness 0.75 in
-Front Baffle Thickness 1.0 in
-Volume (net int.) 1.5 cu ft
-External Width 23.25 in
-External Height 13.5 in
-External Depth 14.5 in
Internal Slot Port Width 1.5 in
-Internal Slot Port Height 12 in
-Internal Slot Port Depth 22.5 in
-Port Extension Length 7.25 in
Sealed Tuned F3 40.7 HZ Fc 44.7 HZ
Wall Thickness 0.75 in
Front Baffle Thickness 1.0 in
Volume 1.25 cu ft
External Width 15.5 in
External Height 11.5 in
External Depth 18.25 in
If you want to design your own here are the specs for a 10W7
Free Air Resonance (Fs) 30.6 Hz
Electrical "Q" (Qes) 0.578
Mechanical 'Q' (Qms) 7.647
Total Speaker “Q” (Qts) 0.537
Equivalent Compliance (Vas) 1.28 cu ft / 36.1 L
One-Way Linear Excursion (Xmax)* 0.9 in / 23 mm
Reference Efficiency (no) 0.171%
Efficiency (1 W / 1 m)** 84.3 dB SPL
Effective Piston Area (Sd) 59.8 sq in / 0.0386 sq m
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