ESX SXT8D2 (2x2 Ohm)

8″ subwoofer · dual 2 Ω · 250 W RMS

Fs 34 HzQts 0.56Vas 0.67 ft³Xmax 0.41″

Recommended box

For a sedan, one sub, 250 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 volume0.64 ft³ (18 L)
Qtc0.80
Fc49 Hz
F3 (−3 dB, no cabin gain)46 Hz
Example box (outside)10 1/4″ × 10 1/4″ × 16 5/16″
Open sealed box in designer

Ported

Net volume1.38 ft³ (39 L)
Tuning (Fb)30 Hz
Portround port Ø2 1/2″, 8 15/16″ long
Port velocity at 250 W194 ft/s
F3 (−3 dB, no cabin gain)27 Hz
Example box (outside)31 1/16″ × 15 3/4″ × 7 5/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs34 Hz
Qts0.56
Qes0.6
Qms7.9
Vas0.67 ft³
Re (one coil)2 Ω
Sd35.2 in²
Xmax0.41″
Vd14.5 in³ calc.
Mms84 g calc.
BL7.7 T·m calc.
EBP57 — sealed or ported calc.
Sensitivity, 1 W / 1 m83 dB calc.

General

Size8″
Voice coilsdual 2 Ω
RMS power250 W

Mounting dimensions

Ø8 1/4″cutout Ø7 3/16″mounting depth 4 13/16″magnet Ø4 5/16″
Cutout diameter7 3/16″
Mounting depth4 13/16″
Overall diameter8 1/4″
Magnet diameter4 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 ESX 8″ models