URAL Molot 10 (2+2)

10″ subwoofer · dual 2 Ω · 300 W RMS

Fs 35.6 HzQts 0.55Vas 0.81 ft³Xmax 0.28″

Recommended box

For a sedan, one sub, 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 volume0.71 ft³ (20 L)
Qtc0.80
Fc52 Hz
F3 (−3 dB, no cabin gain)49 Hz
Example box (outside)12 3/16″ × 12 3/16″ × 12 7/8″
Open sealed box in designer

Ported

Net volume2.08 ft³ (59 L)
Tuning (Fb)29 Hz
Portslot 1 9/16 × 14 5/16″, 30 1/2″ long
Port velocity at 300 W59 ft/s
F3 (−3 dB, no cabin gain)26 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 12 1/4″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs35.6 Hz
Qts0.55
Qes0.6
Qms5.96
Vas0.81 ft³
Re (one coil)≈ 1.7 Ω
Sd53.4 in²
Xmax0.28″
Vd14.7 in³ calc.
Mms147 g calc.
BL9.6 T·m calc.
EBP59 — sealed or ported calc.
Sensitivity, 1 W / 1 m84.4 dB calc.

General

Size10″
Voice coilsdual 2 Ω
RMS power300 W

Mounting dimensions

Ø10 11/16″cutout Ø9 1/8″mounting depth 4 7/8″magnet Ø6 3/16″
Cutout diameter9 1/8″
Mounting depth4 7/8″
Overall diameter10 11/16″
Magnet diameter6 3/16″

Cone area (Sd) calculated from Fs, Vas and Mms: 53.4 in².

“≈” 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 URAL 10″ models