Morel Primo 104 (SVC 4 ohm)

10″ subwoofer · 4 Ω · 250 W RMS

Fs 35 HzQts 0.43Vas 1.41 ft³Xmax 0.31″

Recommended box

For a sedan, one sub, 250 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 volume0.57 ft³ (16 L)
Qtc0.81
Fc65 Hz
F3 (−3 dB, no cabin gain)62 Hz
Example box (outside)12 3/16″ × 12 3/16″ × 10 3/4″
Open sealed box in designer

Ported

Net volume1.91 ft³ (54 L)
Tuning (Fb)34 Hz
Portslot 1 9/16 × 14 5/16″, 23 7/16″ long
Port velocity at 250 W51 ft/s
F3 (−3 dB, no cabin gain)32 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 11″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs35 Hz
Qts0.43
Qes0.49
Qms3.59
Vas1.41 ft³
Re3.2 Ω
Sd49.6 in²
Xmax0.31″
Vd15.6 in³ calc.
Mms75 g calc.
BL10.4 T·m calc.
EBP71 — sealed or ported calc.
Sensitivity, 1 W / 1 m87.4 dB calc.

General

Size10″
Voice coils4 Ω
RMS power250 W

Mounting dimensions

Ø10 3/8″cutout Ø9 1/16″mounting depth 5 1/8″magnet Ø≈ 5 7/8″
Cutout diameter9 1/16″
Mounting depth5 1/8″
Overall diameter10 3/8″

“≈” 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 Morel 10″ models