Spyder Nitro 8 800W S4

8″ subwoofer · 4 Ω · 800 W RMS

Fs 36 HzQts 0.52Vas 1.80 ft³Xmax 0.39″

Recommended box

For a sedan, one sub, 800 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 volume0.78 ft³ (22 L)
Qtc0.95
Fc66 Hz
F3 (−3 dB, no cabin gain)56 Hz
Example box (outside)10 1/4″ × 10 1/4″ × 19 7/16″
Open sealed box in designer

Ported

Net volume1.31 ft³ (37 L)
Tuning (Fb)45 Hz
Portslot 1 15/16 × 14 5/16″, 24 1/8″ long
Port velocity at 800 W59 ft/s
F3 (−3 dB, no cabin gain)42 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 8 13/16″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs36 Hz
Qts0.52
Qes0.58
Qms4.92
Vas1.80 ft³
Re3.6 Ω
Sd≈ 33.3 in²
Xmax0.39″
EBP62 — sealed or ported calc.
Sensitivity, 1 W / 1 m88.1 dB calc.

General

Size8″
Voice coils4 Ω
RMS power800 W

Mounting dimensions

Ø8 1/16″cutout Ø7 1/8″mounting depth 4 1/2″magnet Ø6″
Cutout diameter7 1/8″
Mounting depth4 1/2″
Overall diameter8 1/16″
Magnet diameter6″

“≈” 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 Spyder 8″ models