For a sedan, one sub, 300 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
24 Hz
Qts
0.51
Qes
0.58
Qms
4.34
Vas
2.33 ft³
Re
≈ 1.7 Ω
Sd
56.3 in²
Xmax
≈ 0.39″
Mms
124 g calc.
BL
7.4 T·m calc.
EBP
41 — suits sealed calc.
Sensitivity, 1 W / 1 m
84 dB calc.
General
Size
10″
Voice coils
2 Ω
RMS power
—
Mounting dimensions
Cutout diameter
≈ 9 1/8″
Mounting depth
≈ 5 1/8″
“≈” 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.