For a sedan, one sub, 600 W. It’s the same math as the designer’s step-by-step mode, where you can fit the box to your space, vehicle and amp and get plans, a cut sheet and DXF.
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain
Thiele/Small parameters
Fs
30.1 Hz
Qts
0.51
Qes
0.543
Qms
9.23
Vas
0.82 ft³
Re (one coil)
3.23 Ω
Sd
49.3 in²
Xmax
0.75″
Vd
36.9 in³ calc.
Mms
172 g calc.
BL
13.9 T·m calc.
EBP
55 — sealed or ported calc.
Sensitivity, 1 W / 1 m
82.7 dB calc.
General
Size
10″
Voice coils
dual 4 Ω
RMS power
600 W
Mounting dimensions
Cutout diameter
9″
Mounting depth
6 7/8″
Overall diameter
10 1/2″
Magnet diameter
6 5/16″
“≈” means the value isn’t in the spec sheet and a typical value for the size is used; “calc.” means it’s calculated from the published parameters. Check the manufacturer’s spec sheet before you build.