Black Hydra Gamma-10

10″ subwoofer · 4 Ω · 400 W RMS

Fs 31.4 HzQts 0.44Vas 1.24 ft³Xmax 0.59″

Recommended box

For a sedan, one sub, 400 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 volume0.53 ft³ (15 L)
Qtc0.81
Fc57 Hz
F3 (−3 dB, no cabin gain)54 Hz
Example box (outside)12 3/16″ × 12 3/16″ × 10 1/4″
Open sealed box in designer

Ported

Net volume1.77 ft³ (50 L)
Tuning (Fb)31 Hz
Portslot 1 9/16 × 14 5/16″, 31 5/8″ long
Port velocity at 400 W61 ft/s
F3 (−3 dB, no cabin gain)29 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 11 1/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs31.4 Hz
Qts0.44
Qes0.475
Qms6
Vas1.24 ft³
Re≈ 3.4 Ω
Sd≈ 52.7 in²
Xmax0.59″
EBP66 — sealed or ported calc.
Sensitivity, 1 W / 1 m85.6 dB calc.

General

Size10″
Voice coils4 Ω
RMS power400 W

Mounting dimensions

Ø≈ 10 1/4″cutout Ø9 1/16″mounting depth 3 1/2″magnet Ø≈ 5 7/8″
Cutout diameter9 1/16″
Mounting depth3 1/2″

Only Qts is published — Qms assumed to be 6 and Qes calculated (barely affects box design).

“≈” 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 Black Hydra 10″ models