For a sedan, one sub, 450 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
36 Hz
Qts
0.47
Qes
0.51
Qms
6.64
Vas
0.65 ft³
Re (one coil)
1.85 Ω
Sd
51.2 in²
Xmax
0.45″
Vd
23.2 in³ calc.
Mms
164 g calc.
BL
11.6 T·m calc.
EBP
71 — sealed or ported calc.
Sensitivity, 1 W / 1 m
84.3 dB calc.
General
Size
10″
Voice coils
dual 2 Ω
RMS power
450 W
Mounting dimensions
Cutout diameter
9 1/16″
Mounting depth
5 1/2″
Overall diameter
10 3/8″
Magnet diameter
5 11/16″
“≈” 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.