ESX VXP84G (4 Ohm)

8″ subwoofer · 4 Ω · 300 W RMS

Fs 36 HzQts 0.50Vas 0.67 ft³Xmax 0.47″

Recommended box

For a sedan, one sub, 300 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 volume0.42 ft³ (12 L)
Qtc0.81
Fc58 Hz
F3 (−3 dB, no cabin gain)54 Hz
Example box (outside)10 5/8″ × 10 5/8″ × 10 3/4″
Open sealed box in designer

Ported

Net volume1.41 ft³ (40 L)
Tuning (Fb)31 Hz
Portslot 1 9/16 × 14 5/16″, 40 1/2″ long
Port velocity at 300 W49 ft/s
F3 (−3 dB, no cabin gain)28 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 10 1/8″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs36 Hz
Qts0.50
Qes0.54
Qms7.53
Vas0.67 ft³
Re3.8 Ω
Sd36.9 in²
Xmax0.47″
Vd17.4 in³ calc.
Mms83 g calc.
BL11.5 T·m calc.
EBP67 — sealed or ported calc.
Sensitivity, 1 W / 1 m84.1 dB calc.

General

Size8″
Voice coils4 Ω
RMS power300 W

Mounting dimensions

Ø8 1/4″cutout Ø7 7/16″mounting depth 3 7/16″magnet Ø5 1/4″
Cutout diameter7 7/16″
Mounting depth3 7/16″
Overall diameter8 1/4″
Magnet diameter5 1/4″

“≈” 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