Diamond HXP154

15″ subwoofer · dual 4 Ω · 1,100 W RMS

Fs 23 HzQts 0.47Vas 2.99 ft³Xmax 0.83″

Recommended box

For a sedan, one sub, 1,100 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
Fc39 Hz
F3 (−3 dB, no cabin gain)37 Hz
Example box (outside)17 5/16″ × 17 5/16″ × 13 1/2″
Open sealed box in designer

Ported

Net volume4.91 ft³ (139 L)
Tuning (Fb)25 Hz
Portslot 3 1/8 × 16 11/16″, 39 13/16″ long
Port velocity at 1,100 W64 ft/s
F3 (−3 dB, no cabin gain)22 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 23 7/8″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs23 Hz
Qts0.47
Qes0.56
Qms3
Vas2.99 ft³
Re (one coil)3 Ω
Sd126.9 in²
Xmax0.83″
Vd105 in³ calc.
Mms538 g calc.
BL20.4 T·m calc.
EBP41 — suits sealed calc.
Sensitivity, 1 W / 1 m84.6 dB calc.

General

Size15″
Voice coilsdual 4 Ω
RMS power1,100 W

Mounting dimensions

Ø15 3/4″cutout Ø14 3/16″mounting depth 9 1/2″magnet Ø≈ 9 3/16″
Cutout diameter14 3/16″
Mounting depth9 1/2″
Overall diameter15 3/4″

“≈” 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 Diamond 15″ models