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
27.5 Hz
Qts
0.39
Qes
0.44
Qms
3.35
Vas
2.86 ft³
Re (one coil)
0.8 Ω
Sd
136.6 in²
Xmax
0.98″
Vd
134.5 in³ calc.
Mms
456 g calc.
BL
12 T·m calc.
EBP
63 — sealed or ported calc.
Sensitivity, 1 W / 1 m
87.8 dB calc.
General
Size
15″
Voice coils
dual 1 Ω
RMS power
2,000 W
Mounting dimensions
Cutout diameter
14″
Mounting depth
10 1/16″
Overall diameter
15 5/8″
“≈” 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.