Elemental Designs E15o

15″ subwoofer · DVC · 1,000 W RMS

35 HzFs, resonance
0.34Qts
2.90 ft³Vas
0.75″Xmax
1,000 WRMS
Sourceweb.archive.org · manufacturer data
Checked against sourceOctober 2026
Thiele/Small parametersnot in the spec sheet: Sd — typical value for the size used
Mounting dimensions1 of 4 — missing: mounting depth, frame outer diameter, magnet diameter; the designer will use an estimate

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

smaller, tighter
1.13 ft³ (32 L)
Net volume
Bass character (Qtc)Flat and accurate · 0.64
Fc66 Hz
F3 (−3 dB, no cabin gain)77 Hz
Example box (outside)17 5/16″ × 17 5/16″ × 10 5/16″
Open sealed box in designer

Ported

deeper, louder
3.67 ft³ (104 L)
Net volume
Tuning (Fb)34 Hz
Portslot 3 1/8 × 16 11/16″, 27 1/8″ long
Port velocity at 1,000 W65 ft/s
F3 (−3 dB, no cabin gain)33 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 17 15/16″
Open ported box in designer

Deeper: 2.37 ft³ (67 L) tuned to 39 Hz, 31 1/2″ × 18 1/8″ × 12 7/8″ outside — a bigger box with flatter deep bass. Open in the calculator

Where to buy Amazon
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Size15″
Voice coilsDVC
RMS power1,000 W
Fs35 Hz
Qts0.34
Qes0.36
Qms6.2
Vas2.90 ft³
Re (one coil)1.9 Ω
Sd≈ 124 in²
Xmax0.75″
EBP97 — sealed or ported calc.
Sensitivity, 1 W / 1 m91.9 dB calc.

Mounting dimensions

Ø≈ 15 3/16″cutout Ø14″mounting depth ≈ 7 1/16″magnet Ø≈ 9 1/8″
Cutout diameter14″
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 Elemental Designs 15″ models

Similar 15″ subwoofers from other brands

Close in Fs, Qts and Vas — a box of similar volume will suit them.

FAQ

What box does the Elemental Designs E15o need?

Recommended net volume: 1.13 ft³ sealed, 3.67 ft³ ported tuned to 34 Hz — for one sub in a sedan at 1,000 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.

What are the Elemental Designs E15o Thiele/Small specs?

Fs 35 Hz, Qts 0.34, Vas 2.90 ft³, Xmax 0.75″.

How much power does the Elemental Designs E15o handle and how do I wire it?

RMS power rating: 1,000 W. Wiring for several subs and amp power — in the wiring calculator.