Audio System HX 12 SQ

12″ subwoofer · 4 Ω · 450 W RMS

Fs 28.2 HzQts 0.50Vas 2.40 ft³Xmax 0.46″

Recommended box

For a sedan, one sub, 450 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 volume1.59 ft³ (45 L)
Qtc0.80
Fc45 Hz
F3 (−3 dB, no cabin gain)42 Hz
Example box (outside)14 9/16″ × 14 9/16″ × 18 3/8″
Open sealed box in designer

Ported

Net volume3.04 ft³ (86 L)
Tuning (Fb)30 Hz
Portslot 1 15/16 × 14 5/16″, 23 3/16″ long
Port velocity at 450 W62 ft/s
F3 (−3 dB, no cabin gain)27 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 15 15/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs28.2 Hz
Qts0.50
Qes0.57
Qms4.36
Vas2.40 ft³
Re3.1 Ω
Sd78.5 in²
Xmax0.46″
Vd36.5 in³ calc.
Mms170 g calc.
BL12.8 T·m calc.
EBP49 — suits sealed calc.
Sensitivity, 1 W / 1 m86.3 dB calc.

General

Size12″
Voice coils4 Ω
RMS power450 W

Mounting dimensions

Ø12 5/16″cutout Ø11 1/4″mounting depth 6 15/16″magnet Ø≈ 7 5/16″
Cutout diameter11 1/4″
Mounting depth6 15/16″
Overall diameter12 5/16″

“≈” 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.

Data sources

Other Audio System 12″ models