Magnat XPRESS 15

15″ subwoofer · 4 Ω · 220 W RMS

Fs 21 HzQts 0.52Vas 8.83 ft³Xmax 0.22″

Recommended box

For a sedan, one sub, 220 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 volume2.83 ft³ (80 L)
Qtc1.05
Fc43 Hz
F3 (−3 dB, no cabin gain)35 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 11 3/4″
Open sealed box in designer

Ported

Net volume4.80 ft³ (136 L)
Tuning (Fb)31 Hz
Portslot 1 9/16 × 16 11/16″, 11″ long
Port velocity at 220 W53 ft/s
F3 (−3 dB, no cabin gain)29 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 19 5/16″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs21 Hz
Qts0.52
Qes0.55
Qms8.37
Vas8.83 ft³
Re3.3 Ω
Sd≈ 124 in²
Xmax0.22″
EBP38 — suits sealed calc.
Sensitivity, 1 W / 1 m88.2 dB calc.

General

Size15″
Voice coils4 Ω
RMS power220 W

Mounting dimensions

Ø≈ 15 3/16″cutout ≈ Ø14″mounting depth ≈ 7 1/16″magnet Ø≈ 9 1/16″
Cutout diameter≈ 14″
Mounting depth≈ 7 1/16″

“≈” 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 Magnat 15″ models