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
26.2 Hz
Qts
0.40
Qes
0.43
Qms
6.57
Vas
2.12 ft³
Re (one coil)
1.9 Ω
Sd
120.4 in²
Xmax
0.79″
Vd
94.8 in³ calc.
Mms
526 g calc.
BL
19.6 T·m calc.
EBP
61 — sealed or ported calc.
Sensitivity, 1 W / 1 m
86 dB calc.
General
Size
15″
Voice coils
dual 2 Ω
RMS power
2,000 W
Mounting dimensions
Cutout diameter
13 3/4″
Mounting depth
10 7/16″
Overall diameter
15 3/8″
“≈” 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.