For a sedan, one sub, 2,000 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
0.41
Qes
0.493
Qms
2.3
Vas
1.55 ft³
Re (one coil)
0.9 Ω
Sd
126.2 in²
Xmax
0.79″
Vd
99.3 in³ calc.
Mms
417 g calc.
BL
13.1 T·m calc.
EBP
73 — sealed or ported calc.
Sensitivity, 1 W / 1 m
88.2 dB calc.
General
Size
15″
Voice coils
dual 1 Ω
RMS power
2,000 W
Mounting dimensions
Cutout diameter
13 3/4″
Mounting depth
9 3/4″
Overall diameter
15 7/16″
“≈” 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.