Elemental Designs 15A.22

15″ subwoofer · dual 2 Ω · 1,000 W RMS

28.8 HzFs, resonance

0.33Qts

3.41 ft³Vas

1.15″Xmax

1,000 WRMS

Source	web.archive.org · manufacturer data
Checked against source	October 2026
Thiele/Small parameters	complete
Mounting dimensions	2 of 4 — missing: cutout, magnet diameter; the designer will use an estimate

The published specs don’t add up:

Re 6.77 Ω doesn't look like a 2 Ω coil — check the spec sheet.

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 · 0.65
Fc	58 Hz
F3 (−3 dB, no cabin gain)	67 Hz
Example box (outside)	16 15/16″ × 16 15/16″ × 10 13/16″

Open sealed box in designer

Ported

deeper, louder

3.71 ft³ (105 L)

Net volume

Tuning (Fb)	32 Hz
Port	slot 3 1/8 × 16 5/16″, 30 1/4″ long
Port velocity at 1,000 W	62 ft/s
F3 (−3 dB, no cabin gain)	30 Hz
Example box (outside)	31 1/2″ × 17 11/16″ × 18 13/16″

Open ported box in designer

Deeper: 2.40 ft³ (68 L) tuned to 34 Hz, 31 1/2″ × 17 11/16″ × 13 5/8″ outside — a bigger box with flatter deep bass. Open in the calculator

Where to buy Amazon

Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Size	15″
Voice coils	dual 2 Ω
RMS power	1,000 W
Fs	28.8 Hz
Qts	0.33
Qes	0.37
Qms	2.74
Vas	3.41 ft³

Re (one coil)	6.77 Ω
Sd	124.9 in²
Xmax	1.15″
Vd	143.1 in³ calc.
Mms	291 g calc.
BL	31.1 T·m calc.
EBP	78 — sealed or ported calc.
Sensitivity, 1 W / 1 m	89.9 dB calc.

Mounting dimensions

Cutout diameter	≈ 13 15/16″
Mounting depth	7 11/16″
Overall diameter	15 1/2″

“≈” 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

web.archive.org/web/20030329193724/http://www.edesignaudio.com/ep/aspecs.htm

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.

Audiobahn AW1508Q 1.15 ft³ sealed · 3.46 ft³ ported
Audiobahn AW1508T 1.18 ft³ sealed · 3.46 ft³ ported
Crescendo Audio Contralto 15 D1 1.39 ft³ sealed · 3.67 ft³ ported
PowerBass 3XL-151D 1.34 ft³ sealed · 3.88 ft³ ported
Audiobahn AW1505N 1.09 ft³ sealed · 3.46 ft³ ported
Audiobahn AW1505Q 1.09 ft³ sealed · 3.46 ft³ ported

FAQ

What box does the Elemental Designs 15A.22 need?

Recommended net volume: 1.13 ft³ sealed, 3.71 ft³ ported tuned to 32 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 15A.22 Thiele/Small specs?

Fs 28.8 Hz, Qts 0.33, Vas 3.41 ft³, Xmax 1.15″, Sd 124.9 in².

What is the Elemental Designs 15A.22 mounting depth?

Mounting depth is 7 11/16″. The inside depth of the box must exceed the mounting depth by at least 1″.

How much power does the Elemental Designs 15A.22 handle and how do I wire it?

RMS power rating: 1,000 W. Dual 2 Ω voice coils: series gives 4 Ω, parallel gives 1 Ω at the amp. Wiring for several subs and amp power — in the wiring calculator.