RE Audio REX10 S4

10″ subwoofer · 4 Ω · 200 W RMS

Fs 24.4 HzQts 0.46Vas 2.02 ft³

Recommended box

For a sedan, one sub, 200 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 volume0.95 ft³ (27 L)
Qtc0.80
Fc43 Hz
F3 (−3 dB, no cabin gain)41 Hz
Example box (outside)12 5/8″ × 12 5/8″ × 15 1/2″
Open sealed box in designer

Ported

Net volume2.19 ft³ (62 L)
Tuning (Fb)27 Hz
Portslot 1 9/16 × 14 5/16″, 33 7/8″ long
Port velocity at 200 W42 ft/s
F3 (−3 dB, no cabin gain)25 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 12 15/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs24.4 Hz
Qts0.46
Qes0.492
Qms6.09
Vas2.02 ft³
Re3.83 Ω
Sd56.8 in²
Xmax≈ 0.39″
Mms142 g calc.
BL13 T·m calc.
EBP49 — suits sealed calc.
Sensitivity, 1 W / 1 m84.3 dB calc.

General

Size10″
Voice coils4 Ω
RMS power200 W

Mounting dimensions

Ø10 7/8″cutout Ø9 5/16″mounting depth 5″magnet Ø≈ 6 1/16″
Cutout diameter9 5/16″
Mounting depth5″
Overall diameter10 7/8″

“≈” 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 RE Audio 10″ models