Sony XS-W124ES

12″ subwoofer · 4 Ω · 500 W RMS

Fs 35.8 HzQts 0.76Vas 1.21 ft³Xmax 0.35″

Recommended box

For a sedan, one sub, 500 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

Net volume1.73 ft³ (49 L)
Qtc1.00
Fc47 Hz
F3 (−3 dB, no cabin gain)38 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 8 3/4″
Open sealed box in designer

Ported

Net volume2.93 ft³ (83 L)
Tuning (Fb)32 Hz
Portslot 2 3/16 × 14 5/16″, 23 1/16″ long
Port velocity at 500 W63 ft/s
F3 (−3 dB, no cabin gain)27 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 15 11/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs35.8 Hz
Qts0.76
Qes0.84
Qms8.49
Vas1.21 ft³
Re3.85 Ω
Sd76 in²
Xmax0.35″
Vd26.6 in³ calc.
Mms195 g calc.
BL14.2 T·m calc.
EBP43 — suits sealed calc.
Sensitivity, 1 W / 1 m84.7 dB calc.

General

Size12″
Voice coils4 Ω
RMS power500 W

Mounting dimensions

Ø≈ 12 1/4″cutout Ø11 1/16″mounting depth 5 7/8″magnet Ø≈ 7 3/16″
Cutout diameter11 1/16″
Mounting depth5 7/8″

“≈” 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.

Data sources

Other Sony 12″ models