Audiobahn AW1208X
12″ subwoofer · 1,500 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, 1,500 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) | Dry and tight · 0.56 |
|---|---|
| Fc | 42 Hz |
| F3 (−3 dB, no cabin gain) | 57 Hz |
| Example box (outside) | 14 3/16″ × 14 3/16″ × 10 1/16″ |
Ported
deeper, louder| Tuning (Fb) | 30 Hz |
|---|---|
| Port | slot 2 15/16 × 14 5/16″, 50 1/4″ long |
| Port velocity at 1,500 W | 79 ft/s |
| F3 (−3 dB, no cabin gain) | 26 Hz |
| Example box (outside) | 31 1/2″ × 15 3/4″ × 16 3/4″ |
Deeper: 1.45 ft³ (41 L) tuned to 25 Hz, 28 9/16″ × 15 3/4″ × 9 1/4″ 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 | 1,500 W |
| Fs | 27.2 Hz |
| Qts | 0.37 |
| Qes | 0.39 |
| Qms | 6.6 |
| Vas | 0.95 ft³ |
|---|---|
| Re | 1.05 Ω |
| Sd | ≈ 76 in² |
| Xmax | 0.79″ |
| EBP | 70 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 83.4 dB calc. |
Mounting dimensions
| Cutout diameter | 11 1/8″ |
|---|---|
| Mounting depth | 6 3/4″ |
| 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 ALUM12X 12″
- 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″
Similar 12″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- Rockford Fosgate Power T212D2 (2004) 0.83 ft³ sealed · 1.98 ft³ ported
- URAL Patriot 12 (2+2) 0.64 ft³ sealed · 2.05 ft³ ported
- Fi Audio BTL4 12 D1 0.67 ft³ sealed · 1.20 ft³ ported
- Fi Audio BTL4 12 D2 0.67 ft³ sealed · 1.20 ft³ ported
- AMP MASS 1000 12D2 V.2 0.71 ft³ sealed · 2.33 ft³ ported
- Fi Audio NEO 3.5 12 D2 0.94 ft³ sealed · 2.19 ft³ ported
FAQ
What box does the Audiobahn AW1208X need?
Recommended net volume: 0.71 ft³ sealed, 2.26 ft³ ported tuned to 30 Hz — for one sub in a sedan at 1,500 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.
What are the Audiobahn AW1208X Thiele/Small specs?
Fs 27.2 Hz, Qts 0.37, Vas 0.95 ft³, Xmax 0.79″.
What is the Audiobahn AW1208X mounting depth?
Mounting depth is 6 3/4″, 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 AW1208X handle and how do I wire it?
RMS power rating: 1,500 W. Wiring for several subs and amp power — in the wiring calculator.