Many of today's car audio products consist of a lot of custom tooled parts, all which cost extra money. The design goal for the SQ Series subs was to engineer phenomenal audiophile-grade subwoofers that do not cost a fortune. If you're looking for chrome or something really flashy, look somewhere else. If you're looking perfect subwoofer performance, look no further. Both sizes come with dual 4-ohm VCs to wire a single sub to a Class A/B or Class D amplifier.

  A.8SQ A.12SQ
Fs (hz) 37.13 25.205
Qms 11.69 12.07
Vas (ft^3) 0.603 3.381
Cms (mm/n) 0.301 0.2926
Mms (g) 61.1 136.26
Rms (kg/s) 1.22 1.786
Xmax 9 13.85
Xmech 13.5 20.78
Dia (in.) 7.17 9.729
Sd (in^2) 31 74.4
Vd (ft^3) 0.009 0.037
Qes 0.616 0.612
Re (ohms) 7.2 7.2
Z (ohms) 8 8
BL 12.91 15.933
Pe (watts) 180 300
Qts  0.585 0.583
No 0.137 0.242
1w/1m SPL 83.39 85.85
2.8v SPL 83.97 86.44
VC DIA (IN) 2 2.5
VC (Ohms) DVC4 DVC4
M-vd (ft^3) 0.054 0.131
Cut-out 7.125 11
Depth 4 5.5
  A.8SQ A.12SQ
Sm Sealed 0.40 1.00
Qtc 0.902 1.144
F3 50.18 39.67
Med Sealed 0.60 1.50
Qtc 0.799 0.992
F3 47.88 36.05
Lg Sealed 0.80 2.00
Qtc 0.747 0.904
F3 47.19 34.33
  A.8SQ A.12SQ
Sm Vented 0.50 2.00
port 2x8 4x12
Fb 40.78 34.82
F3 40.10 31.91
Med Vented 0.75 2.50
port 2x8 4x12
Fb 33.07 30.98
F3 34.05 28.47
Lg Vented 1.00 3.00
port 2x8 4x12
Fb 28.37 28.18
F3 31.11 25.97