Morel Ultimo PowerSlim PS124D (DVC 4+4 ohm)

12″ subwoofer · dual 4 Ω · 700 W RMS

Fs 24 HzQts 0.59Vas 1.74 ft³Xmax 0.31″

Recommended box

For a sedan, one sub, 700 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)
Qtc0.85
Fc35 Hz
F3 (−3 dB, no cabin gain)31 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 8 3/16″
Open sealed box in designer

Ported

Net volume2.72 ft³ (77 L)
Tuning (Fb)25 Hz
Portslot 2 3/16 × 14 5/16″, 44 3/16″ long
Port velocity at 700 W60 ft/s
F3 (−3 dB, no cabin gain)22 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 16 3/4″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs24 Hz
Qts0.59
Qes0.7
Qms3.6
Vas1.74 ft³
Re (one coil)3.2 Ω
Sd70.1 in²
Xmax0.31″
Vd22.1 in³ calc.
Mms258 g calc.
BL13.3 T·m calc.
EBP34 — suits sealed calc.
Sensitivity, 1 W / 1 m81.9 dB calc.

General

Size12″
Voice coilsdual 4 Ω
RMS power700 W

Mounting dimensions

Ø12″cutout Ø10 9/16″mounting depth 3 3/8″magnet Ø≈ 6 7/8″
Cutout diameter10 9/16″
Mounting depth3 3/8″
Overall diameter12″

“≈” 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 Morel 12″ models