Ascendant Audio Chaos 15 D1

15″ subwoofer · dual 1 Ω · 1,750 W RMS

Fs 33.2 HzQts 0.48Vas 2.33 ft³Xmax 0.94″

Recommended box

For a sedan, one sub, 1,750 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 volume1.31 ft³ (37 L)
Qtc0.80
Fc55 Hz
F3 (−3 dB, no cabin gain)52 Hz
Example box (outside)17 5/16″ × 17 5/16″ × 11 9/16″
Open sealed box in designer

Ported

Net volume4.27 ft³ (121 L)
Tuning (Fb)30 Hz
Portslot 4 1/8 × 16 11/16″, 41 1/8″ long
Port velocity at 1,750 W65 ft/s
F3 (−3 dB, no cabin gain)27 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 23 1/8″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs33.2 Hz
Qts0.48
Qes0.53
Qms5.11
Vas2.33 ft³
Re (one coil)0.75 Ω
Sd125.6 in²
Xmax0.94″
Vd118.6 in³ calc.
Mms323 g calc.
BL9.8 T·m calc.
EBP63 — sealed or ported calc.
Sensitivity, 1 W / 1 m88.6 dB calc.

General

Size15″
Voice coilsdual 1 Ω
RMS power1,750 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″

Judging by its value, the published Re is for both coils in series — converted to per coil.

“≈” 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 Ascendant Audio 15″ models