Swat GLK-12D1

12″ subwoofer · dual 1 Ω · 1,300 W RMS

Fs 32.4 HzQts 0.56Vas 1.18 ft³

Recommended box

For a sedan, one sub, 1,300 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 volume1.13 ft³ (32 L)
Qtc0.80
Fc46 Hz
F3 (−3 dB, no cabin gain)43 Hz
Example box (outside)14 9/16″ × 14 9/16″ × 13 3/4″
Open sealed box in designer

Ported

Net volume2.93 ft³ (83 L)
Tuning (Fb)27 Hz
Portslot 3 3/8 × 14 5/16″, 54 1/4″ long
Port velocity at 1,300 W64 ft/s
F3 (−3 dB, no cabin gain)24 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 20 5/8″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs32.4 Hz
Qts0.56
Qes0.618
Qms6
Vas1.18 ft³
Re (one coil)≈ 0.85 Ω
Sd≈ 76 in²
Xmax≈ 0.39″
EBP52 — sealed or ported calc.
Sensitivity, 1 W / 1 m84.7 dB calc.

General

Size12″
Voice coilsdual 1 Ω
RMS power1,300 W

Mounting dimensions

Ø12 11/16″cutout Ø11 5/16″mounting depth 6 1/2″magnet Ø7 3/8″
Cutout diameter11 5/16″
Mounting depth6 1/2″
Overall diameter12 11/16″
Magnet diameter7 3/8″

Only Qts is published — Qms assumed to be 6 and Qes calculated (barely affects box design).

“≈” 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 Swat 12″ models