For a sedan, one sub, 1,800 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
53.5 Hz
Qts
0.40
Qes
0.434
Qms
5.55
Vas
0.24 ft³
Re (one coil)
≈ 0.85 Ω
Sd
50.3 in²
Xmax
0.94″
Vd
47.5 in³ calc.
Mms
192 g calc.
BL
11.2 T·m calc.
EBP
123 — suits ported calc.
Sensitivity, 1 W / 1 m
85.8 dB calc.
General
Size
10″
Voice coils
dual 1 Ω
RMS power
1,800 W
Mounting dimensions
Cutout diameter
9 3/8″
Mounting depth
6 1/4″
Overall diameter
11″
“≈” 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.