AMPIRE BOLD104

10″ subwoofer · dual 4 Ω · 1,000 W RMS

Fs 37.7 HzQts 0.37Vas 0.59 ft³Xmax 0.63″

Recommended box

For a sedan, one sub, 1,000 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 volume0.48 ft³ (13.5 L)
Qtc0.55
Fc56 Hz
F3 (−3 dB, no cabin gain)80 Hz
Example box (outside)12 3/16″ × 12 3/16″ × 9 7/16″
Open sealed box in designer

Ported

Net volume0.99 ft³ (28 L)
Tuning (Fb)33 Hz
Portround port Ø3″, 15 1/4″ long
Port velocity at 1,000 W253 ft/s
F3 (−3 dB, no cabin gain)32 Hz
Example box (outside)19 1/16″ × 15 3/4″ × 9 1/4″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs37.7 Hz
Qts0.37
Qes0.4
Qms4.23
Vas0.59 ft³
Re (one coil)3.8 Ω
Sd51.2 in²
Xmax0.63″
Vd32.2 in³ calc.
Mms164 g calc.
BL19.2 T·m calc.
EBP94 — sealed or ported calc.
Sensitivity, 1 W / 1 m85.5 dB calc.

General

Size10″
Voice coilsdual 4 Ω
RMS power1,000 W

Mounting dimensions

Ø10 9/16″cutout Ø9 1/16″mounting depth 6 13/16″magnet Ø≈ 5 7/8″
Cutout diameter9 1/16″
Mounting depth6 13/16″
Overall diameter10 9/16″

“≈” 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 AMPIRE 10″ models