Dayton Audio UMII15-22

15″ subwoofer · dual 2 Ω · 900 W RMS

Fs 29 HzQts 0.70Vas 3.39 ft³Xmax 0.94″

Recommended box

For a sedan, one sub, 900 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 volume2.79 ft³ (79 L)
Qtc1.04
Fc43 Hz
F3 (−3 dB, no cabin gain)35 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 11 7/8″
Open sealed box in designer

Ported

Net volume4.73 ft³ (134 L)
Tuning (Fb)32 Hz
Portslot 2 9/16 × 16 5/16″, 17 11/16″ long
Port velocity at 900 W64 ft/s
F3 (−3 dB, no cabin gain)28 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 20 9/16″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs29 Hz
Qts0.70
Qes1
Qms2.34
Vas3.39 ft³
Re (one coil)2.1 Ω
Sd122.6 in²
Xmax0.94″
Vd115.8 in³ calc.
Mms278 g calc.
BL10.3 T·m calc.
EBP29 — suits sealed calc.
Sensitivity, 1 W / 1 m85.7 dB calc.

General

Size15″
Voice coilsdual 2 Ω
RMS power900 W

Mounting dimensions

Ø15 5/16″cutout Ø13 7/8″mounting depth 8 1/8″magnet Ø≈ 9 1/16″
Cutout diameter13 7/8″
Mounting depth8 1/8″
Overall diameter15 5/16″

“≈” 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 Dayton Audio 15″ models