Audiobahn ALUM12X
12″ subwoofer · 1,000 W RMS
| 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 | 3 of 4 — missing: 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| Bass character (Qtc) | Tight and punchy · 0.80 |
|---|---|
| Fc | 42 Hz |
| F3 (−3 dB, no cabin gain) | 40 Hz |
| Example box (outside) | 14 3/16″ × 14 3/16″ × 13 13/16″ |
Ported
deeper, louder| Tuning (Fb) | 30 Hz |
|---|---|
| Port | slot 2 9/16 × 14 5/16″, 43 3/16″ long |
| Port velocity at 1,000 W | 61 ft/s |
| F3 (−3 dB, no cabin gain) | 27 Hz |
| Example box (outside) | 31 1/2″ × 15 3/4″ × 15 3/8″ |
Deeper: 2.93 ft³ (83 L) tuned to 25 Hz, 31 1/2″ × 15 3/4″ × 18 5/8″ 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 | 1,000 W |
| Fs | 20.7 Hz |
| Qts | 0.39 |
| Qes | 0.44 |
| Qms | 3.6 |
| Vas | 3.35 ft³ |
|---|---|
| Re | 5.4 Ω |
| Sd | ≈ 76 in² |
| Xmax | 0.63″ |
| EBP | 47 — suits sealed calc. |
| Sensitivity, 1 W / 1 m | 84.8 dB calc. |
Mounting dimensions
| Cutout diameter | 11 1/8″ |
|---|---|
| Mounting depth | 5 5/8″ |
| Overall diameter | 12 3/4″ |
“≈” 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 Audiobahn 12″ models
- Audiobahn ALUM12 12″
- Audiobahn ALUM12N 12″ · dual 6 Ω
- Audiobahn ALUM12Q 12″ · dual 6 Ω
- Audiobahn AW120Q 12″
- Audiobahn AW120SVC 12″
- Audiobahn AW120T 12″ · 4 Ω
- Audiobahn AW120XS 12″
- Audiobahn AW121T 12″ · 4 Ω
- Audiobahn AW122N 12″ · 4 Ω
- Audiobahn AW122T 12″
- Audiobahn AW1200 12″
- Audiobahn AW1200N 12″
Similar 12″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- ARC Audio Black 12D2 V2 0.92 ft³ sealed · 2.26 ft³ ported
- Infinity Kappa 122.7W 1.70 ft³ sealed · 2.44 ft³ ported
- Mac Audio Maximus Reference 12 (DVC) 1.31 ft³ sealed · 2.26 ft³ ported
- Pioneer TS-W12PRS 1.02 ft³ sealed · 2.08 ft³ ported
- Dayton Audio RSS315HFA-8 1.52 ft³ sealed · 2.51 ft³ ported
- Dayton Audio DCS305-4 1.06 ft³ sealed · 3.11 ft³ ported
FAQ
What box does the Audiobahn ALUM12X need?
Recommended net volume: 1.06 ft³ sealed, 2.26 ft³ ported tuned to 30 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 Audiobahn ALUM12X Thiele/Small specs?
Fs 20.7 Hz, Qts 0.39, Vas 3.35 ft³, Xmax 0.63″.
What is the Audiobahn ALUM12X mounting depth?
Mounting depth is 5 5/8″, cutout diameter 11 1/8″. The inside depth of the box must exceed the mounting depth by at least 1″.
How much power does the Audiobahn ALUM12X handle and how do I wire it?
RMS power rating: 1,000 W. Wiring for several subs and amp power — in the wiring calculator.