Audiobahn AW1200X
12″ subwoofer · 700 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, 700 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 | 56 Hz |
| F3 (−3 dB, no cabin gain) | 53 Hz |
| Example box (outside) | 14 3/16″ × 14 3/16″ × 13 1/16″ |
Ported
deeper, louder| Tuning (Fb) | 34 Hz |
|---|---|
| Port | slot 1 9/16 × 14 5/16″, 33″ long |
| Port velocity at 700 W | 63 ft/s |
| F3 (−3 dB, no cabin gain) | 36 Hz |
| Example box (outside) | 31 1/2″ × 15 3/4″ × 9 7/8″ |
Deeper: 2.93 ft³ (83 L) tuned to 31 Hz, 31 1/2″ × 15 3/4″ × 16 11/16″ 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 | 700 W |
| Fs | 33.6 Hz |
| Qts | 0.48 |
| Qes | 0.53 |
| Qms | 5.2 |
| Vas | 1.77 ft³ |
|---|---|
| Re | 3.2 Ω |
| Sd | ≈ 76 in² |
| Xmax | 0.47″ |
| EBP | 63 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 87.5 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 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.
- Hertz Hi-Energy HX 300 (SVC 4 ohm) 0.95 ft³ sealed · 1.41 ft³ ported
- Sundown Audio LCSv1-12 D4 1.02 ft³ sealed · 1.48 ft³ ported
- Diamond D312D2 1.24 ft³ sealed · 1.45 ft³ ported
- Bomber Bicho Papão 800W 4+4 Ohm (SW12BP-800-4+4) 0.88 ft³ sealed · 1.27 ft³ ported
- Sony XS-GTR121L 0.85 ft³ sealed · 1.41 ft³ ported
- Soundstream T7.122 0.92 ft³ sealed · 1.31 ft³ ported
FAQ
What box does the Audiobahn AW1200X need?
Recommended net volume: 0.99 ft³ sealed, 1.41 ft³ ported tuned to 34 Hz — for one sub in a sedan at 700 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.
What are the Audiobahn AW1200X Thiele/Small specs?
Fs 33.6 Hz, Qts 0.48, Vas 1.77 ft³, Xmax 0.47″.
What is the Audiobahn AW1200X 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 AW1200X handle and how do I wire it?
RMS power rating: 700 W. Wiring for several subs and amp power — in the wiring calculator.