Gladen Gamma GS12-Slim (DVC 2 ohm)

12″ subwoofer · dual 2 Ω · 500 W RMS

Fs 26.5 HzQts 0.45Vas 2.17 ft³
The published specs don’t add up:

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 volume1.02 ft³ (29 L)
Qtc0.80
Fc47 Hz
F3 (−3 dB, no cabin gain)45 Hz
Example box (outside)15 3/8″ × 15 3/8″ × 11 1/2″
Open sealed box in designer

Ported

Net volume3.32 ft³ (94 L)
Tuning (Fb)26 Hz
Portslot 2 3/16 × 14 3/4″, 33 5/16″ long
Port velocity at 500 W61 ft/s
F3 (−3 dB, no cabin gain)24 Hz
Example box (outside)31 1/2″ × 16 1/8″ × 17 13/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs26.5 Hz
Qts0.45
Qes0.49
Qms5.64
Vas2.17 ft³
Re (one coil)1.78 Ω
Sd85.5 in²
Xmax≈ 0.39″
Mms253 g calc.
BL12.4 T·m calc.
EBP54 — sealed or ported calc.
Sensitivity, 1 W / 1 m85.7 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power500 W

Mounting dimensions

Ø13″cutout Ø12″mounting depth 3 15/16″magnet Ø6 1/8″
Cutout diameter12″
Mounting depth3 15/16″
Overall diameter13″
Magnet diameter6 1/8″

“≈” 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 Gladen 12″ models