For a sedan, one sub, 200 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
33 Hz
Qts
0.51
Qes
0.56
Qms
6.32
Vas
1.27 ft³
Re
7.2 Ω
Sd
53 in²
Xmax
0.43″
Vd
23 in³ calc.
Mms
107 g calc.
BL
16.9 T·m calc.
EBP
59 — sealed or ported calc.
Sensitivity, 1 W / 1 m
85.6 dB calc.
General
Size
10″
Voice coils
8 Ω
RMS power
200 W
Mounting dimensions
Cutout diameter
9 1/4″
Mounting depth
5 5/8″
Overall diameter
10 13/16″
“≈” 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.