Spyder Nitro 12 700W S4

12″ subwoofer · 4 Ω · 700 W RMS

Fs 33.2 HzQts 0.52Vas 2.20 ft³

Recommended box

For a sedan, one sub, 700 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 volume1.59 ft³ (45 L)
Qtc0.80
Fc51 Hz
F3 (−3 dB, no cabin gain)48 Hz
Example box (outside)13 3/4″ × 13 3/4″ × 20 9/16″
Open sealed box in designer

Ported

Net volume2.93 ft³ (83 L)
Tuning (Fb)34 Hz
Portslot 2 9/16 × 14 5/16″, 23 15/16″ long
Port velocity at 700 W63 ft/s
F3 (−3 dB, no cabin gain)31 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 16 1/16″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs33.2 Hz
Qts0.52
Qes0.58
Qms4.93
Vas2.20 ft³
Re3.4 Ω
Sd≈ 76 in²
Xmax≈ 0.39″
EBP57 — sealed or ported calc.
Sensitivity, 1 W / 1 m88 dB calc.

General

Size12″
Voice coils4 Ω
RMS power700 W

Mounting dimensions

Ø12 1/8″cutout Ø10 11/16″mounting depth 7 1/16″magnet Ø8 3/16″
Cutout diameter10 11/16″
Mounting depth7 1/16″
Overall diameter12 1/8″
Magnet diameter8 3/16″

“≈” 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 Spyder 12″ models