Elemental Designs E12k (2002)
12″ subwoofer · 300 W RMS
| 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, 300 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| Bass character (Qtc) | Tight and punchy · 0.80 |
|---|---|
| Fc | 53 Hz |
| F3 (−3 dB, no cabin gain) | 50 Hz |
| Example box (outside) | 14 3/16″ × 14 3/16″ × 17 9/16″ |
Ported
deeper, louder| Tuning (Fb) | 34 Hz |
|---|---|
| Port | slot 1 9/16 × 14 5/16″, 22 7/16″ long |
| Port velocity at 300 W | 50 ft/s |
| F3 (−3 dB, no cabin gain) | 34 Hz |
| Example box (outside) | 31 1/2″ × 15 3/4″ × 11 3/8″ |
Deeper: 3.00 ft³ (85 L) tuned to 33 Hz, 31 1/2″ × 15 3/4″ × 15 1/8″ outside — a bigger box with flatter deep bass. Open in the calculator
Projects with this subwoofer
Boxes that users designed and published: plans, cut sheet and response graph.
Thiele/Small parameters
| Size | 12″ |
|---|---|
| Voice coils | — |
| RMS power | 300 W |
| Fs | 32 Hz |
| Qts | 0.48 |
| Qes | 0.53 |
| Qms | 5.26 |
| Vas | 2.47 ft³ |
| Re | 3.6 Ω |
|---|---|
| Sd | 77.5 in² |
| Xmax | 0.51″ |
| Vd | 39.6 in³ calc. |
| Mms | 125 g calc. |
| BL | 13.1 T·m calc. |
| EBP | 60 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 88.4 dB calc. |
Mounting dimensions
| Cutout diameter | 11 1/16″ |
|---|---|
| Mounting depth | ≈ 5 7/8″ |
Cone area (Sd) calculated from Fs, Vas and Mms: 77.5 in².
“≈” 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/20020405013125/http://www.edesignaudio.com/e12kts.htm
- web.archive.org/web/20030425101100/http://edesignaudio.com/ep/specsold/e12kts.ht
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 (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.
- Black Hydra Gamma-12 1.31 ft³ sealed · 1.87 ft³ ported
- BOSS Audio P126DVC 1.73 ft³ sealed · 1.98 ft³ ported
- Polk Audio db124DVC 1.41 ft³ sealed · 1.77 ft³ ported
- Alpine SWA-12S4 (Atom) 1.48 ft³ sealed · 1.91 ft³ ported
- SPL Dynamics V-300D2 1.59 ft³ sealed · 1.91 ft³ ported
- PowerBass S-1204D 1.45 ft³ sealed · 1.84 ft³ ported
FAQ
What box does the Elemental Designs E12k (2002) need?
Recommended net volume: 1.41 ft³ sealed, 1.98 ft³ ported tuned to 34 Hz — for one sub in a sedan at 300 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.
What are the Elemental Designs E12k (2002) Thiele/Small specs?
Fs 32 Hz, Qts 0.48, Vas 2.47 ft³, Xmax 0.51″, Sd 77.5 in².
How much power does the Elemental Designs E12k (2002) handle and how do I wire it?
RMS power rating: 300 W. Wiring for several subs and amp power — in the wiring calculator.