Audio System R10 EVO

10″ subwoofer · dual 4 Ω · 400 W RMS

Fs 34.5 HzQts 0.51Vas 0.87 ft³Xmax 0.85″
The published specs don’t add up:

Recommended box

For a sedan, one sub, 400 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 volume0.60 ft³ (17 L)
Qtc0.80
Fc54 Hz
F3 (−3 dB, no cabin gain)51 Hz
Example box (outside)12 3/16″ × 12 3/16″ × 11 1/4″
Open sealed box in designer

Ported

Net volume1.94 ft³ (55 L)
Tuning (Fb)29 Hz
Portslot 1 9/16 × 14 5/16″, 33″ long
Port velocity at 400 W65 ft/s
F3 (−3 dB, no cabin gain)26 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 11 7/8″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs34.5 Hz
Qts0.51
Qes0.56
Qms6.3
Vas0.87 ft³
Re (one coil)3.45 Ω
Sd57.4 in²
Xmax0.85″
Vd48.5 in³ calc.
Mms168 g calc.
BL15 T·m calc.
EBP62 — sealed or ported calc.
Sensitivity, 1 W / 1 m84.5 dB calc.

General

Size10″
Voice coilsdual 4 Ω
RMS power400 W

Mounting dimensions

Ø10 5/16″cutout Ø9 1/8″mounting depth 5 3/4″magnet Ø≈ 5 15/16″
Cutout diameter9 1/8″
Mounting depth5 3/4″
Overall diameter10 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 Audio System 10″ models