Elemental Designs e12A (2003)

12″ subwoofer · 750 W RMS

27 HzFs, resonance

0.41Qts

1.62 ft³Vas

1.00″Xmax

750 WRMS

Source	web.archive.org · manufacturer data
Checked against source	October 2026
Thiele/Small parameters	complete
Mounting dimensions	1 of 4 — missing: mounting depth, frame outer diameter, magnet diameter; the designer will use an estimate

Recommended box

For a sedan, one sub, 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

smaller, tighter

0.67 ft³ (19 L)

Net volume

Bass character (Qtc)	Flat and accurate · 0.76
Fc	50 Hz
F3 (−3 dB, no cabin gain)	50 Hz
Example box (outside)	14 3/16″ × 14 3/16″ × 9 11/16″

Open sealed box in designer

Ported

deeper, louder

1.31 ft³ (37 L)

Net volume

Tuning (Fb)	30 Hz
Port	slot 1 3/8 × 14 5/16″, 41 3/16″ long
Port velocity at 750 W	72 ft/s
F3 (−3 dB, no cabin gain)	30 Hz
Example box (outside)	31 1/2″ × 15 3/4″ × 9 13/16″

Open ported box in designer

Deeper: 1.91 ft³ (54 L) tuned to 28 Hz, 31 1/2″ × 15 3/4″ × 13 3/8″ 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	12″
Voice coils	—
RMS power	750 W
Fs	27 Hz
Qts	0.41
Qes	0.45
Qms	4.71
Vas	1.62 ft³

Re	3.61 Ω
Sd	72.1 in²
Xmax	1.00″
Vd	72.1 in³ calc.
Mms	231 g calc.
BL	17.7 T·m calc.
EBP	60 — sealed or ported calc.
Sensitivity, 1 W / 1 m	85 dB calc.

Mounting dimensions

Cutout diameter	11 1/8″
Mounting depth	≈ 5 7/8″

“≈” 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/20030218093906/http://www.edesignaudio.com/ep/ats.htm

Other Elemental Designs 12″ models

Elemental Designs 13Kv.2 12″ · DVC
Elemental Designs 13Ov.2 12″ · DVC
Elemental Designs e3.12 12″ · dual 2 Ω
Elemental Designs e5.12 12″ · dual 2 Ω
Elemental Designs E12a (2002) 12″ · DVC
Elemental Designs E12k (2002) 12″
Elemental Designs e12K (2003) 12″ · DVC
Elemental Designs e12kd4 12″ · DVC
Elemental Designs E12o 12″ · DVC
Elemental Designs e12O.14 12″ · 4 Ω
Elemental Designs e12O.44 12″ · dual 4 Ω

Similar 12″ subwoofers from other brands

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

MTX Audio TX612 0.71 ft³ sealed · 1.24 ft³ ported
Alpine SWR-12D2 (Type-R) 0.71 ft³ sealed · 1.31 ft³ ported
URAL Bulava 12 (2+2) 0.71 ft³ sealed · 1.27 ft³ ported
Alpine SWR-1222D (Type-R) 0.72 ft³ sealed · 1.27 ft³ ported
ACV SW PRO122D 0.64 ft³ sealed · 1.38 ft³ ported
Pride AB-12 (2+2) 0.67 ft³ sealed · 1.20 ft³ ported

FAQ

What box does the Elemental Designs e12A (2003) need?

Recommended net volume: 0.67 ft³ sealed, 1.31 ft³ ported tuned to 30 Hz — for one sub in a sedan at 750 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.

What are the Elemental Designs e12A (2003) Thiele/Small specs?

Fs 27 Hz, Qts 0.41, Vas 1.62 ft³, Xmax 1.00″, Sd 72.1 in².

How much power does the Elemental Designs e12A (2003) handle and how do I wire it?

RMS power rating: 750 W. Wiring for several subs and amp power — in the wiring calculator.