Spyder Nitro 12 800W S4

12″ subwoofer · 4 Ω · 800 W RMS

Fs 31 HzQts 0.55Vas 2.19 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 volume1.73 ft³ (49 L)
Qtc0.83
Fc47 Hz
F3 (−3 dB, no cabin gain)43 Hz
Example box (outside)13 3/4″ × 13 3/4″ × 22 3/16″
Open sealed box in designer

Ported

Net volume2.93 ft³ (83 L)
Tuning (Fb)32 Hz
Portslot 2 3/4 × 14 5/16″, 30″ long
Port velocity at 800 W62 ft/s
F3 (−3 dB, no cabin gain)29 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 16 7/8″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs31 Hz
Qts0.55
Qes0.56
Qms45.22
Vas2.19 ft³
Re3.3 Ω
Sd≈ 76 in²
Xmax0.39″
EBP55 — sealed or ported calc.
Sensitivity, 1 W / 1 m87.2 dB calc.

General

Size12″
Voice coils4 Ω
RMS power800 W

Mounting dimensions

Ø12 1/8″cutout Ø10 11/16″mounting depth 7 5/16″magnet Ø≈ 6 15/16″
Cutout diameter10 11/16″
Mounting depth7 5/16″
Overall diameter12 1/8″

“≈” 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 Spyder 12″ models