Elemental Designs E12o

12″ subwoofer · DVC · 1,000 W RMS

31 HzFs, resonance

0.28Qts

1.52 ft³Vas

0.75″Xmax

1,000 WRMS

Source	web.archive.org · manufacturer data
Checked against source	October 2026
Thiele/Small parameters	not in the spec sheet: Sd — typical value for the size used
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, 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

0.71 ft³ (20 L)

Net volume

Bass character (Qtc)	Dry and tight · 0.49
Fc	55 Hz
F3 (−3 dB, no cabin gain)	90 Hz
Example box (outside)	14 9/16″ × 14 9/16″ × 9 9/16″

Open sealed box in designer

Ported

deeper, louder

2.26 ft³ (64 L)

Net volume

Tuning (Fb)	34 Hz
Port	slot 3 1/8 × 14 5/16″, 40 5/8″ long
Port velocity at 1,000 W	64 ft/s
F3 (−3 dB, no cabin gain)	32 Hz
Example box (outside)	31 1/2″ × 15 3/4″ × 15 7/8″

Open ported box in designer

Deeper: 1.45 ft³ (41 L) tuned to 32 Hz, 31 1/2″ × 15 3/4″ × 10 7/8″ 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	DVC
RMS power	1,000 W
Fs	31 Hz
Qts	0.28
Qes	0.29
Qms	6.2

Vas	1.52 ft³
Re (one coil)	1.9 Ω
Sd	≈ 76 in²
Xmax	0.75″
EBP	107 — suits ported calc.
Sensitivity, 1 W / 1 m	88.5 dB calc.

Mounting dimensions

Cutout diameter	11 1/4″
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/20020605124621/http://edesignaudio.com/e12ots.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 e12A (2003) 12″
Elemental Designs E12k (2002) 12″
Elemental Designs e12K (2003) 12″ · DVC
Elemental Designs e12kd4 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.

Gladen SQX 12 Extreme (SVC 2 ohm) 0.71 ft³ sealed · 2.26 ft³ ported
PSI Platform 3 12 0.71 ft³ sealed · 2.26 ft³ ported
Hertz Hi-Energy HX 300 D (DVC 4+4 ohm) 0.71 ft³ sealed · 1.24 ft³ ported
SPL Dynamics XTR-300D2 0.74 ft³ sealed · 2.40 ft³ ported
Pride LC V.2 12 D2 0.78 ft³ sealed · 2.47 ft³ ported
SoundQubed HDS2.212 D2 0.71 ft³ sealed · 2.33 ft³ ported

FAQ

What box does the Elemental Designs E12o need?

Recommended net volume: 0.71 ft³ sealed, 2.26 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 E12o Thiele/Small specs?

Fs 31 Hz, Qts 0.28, Vas 1.52 ft³, Xmax 0.75″.

How much power does the Elemental Designs E12o handle and how do I wire it?

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