Sundown Audio Uv2-10 D4

10″ subwoofer · dual 4 Ω · 2,000 W RMS

Fs 48.2 HzQts 0.55Vas 0.22 ft³Xmax 1.18″

Recommended box

For a sedan, one sub, 2,000 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 volume0.65 ft³ (18.5 L)
Qtc0.64
Fc56 Hz
F3 (−3 dB, no cabin gain)64 Hz
Example box (outside)13″ × 13″ × 10 11/16″
Open sealed box in designer

Ported

Net volume1.02 ft³ (29 L)
Tuning (Fb)35 Hz
Portround port Ø2 1/2″, 8 3/4″ long
Port velocity at 2,000 W546 ft/s
F3 (−3 dB, no cabin gain)31 Hz
Example box (outside)16″ × 15 3/4″ × 10 5/8″
Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs48.2 Hz
Qts0.55
Qes0.63
Qms4.56
Vas0.22 ft³
Re (one coil)3.1 Ω
Sd53.5 in²
Xmax1.18″
Vd63.2 in³ calc.
Mms297 g calc.
BL21 T·m calc.
EBP77 — sealed or ported calc.
Sensitivity, 1 W / 1 m82.4 dB calc.

General

Size10″
Voice coilsdual 4 Ω
RMS power2,000 W

Mounting dimensions

Ø11″cutout Ø9 3/4″mounting depth 8 1/8″magnet Ø9 11/16″
Cutout diameter9 3/4″
Mounting depth8 1/8″
Overall diameter11″
Magnet diameter9 11/16″

The spec sheet's Sd of 78.5 in² is the area of a 10″ circle, not the cone's radiating area — not used.

Cone area (Sd) calculated from Fs, Vas and Mms: 53.5 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 Sundown Audio 10″ models