Audiobahn AW120SVC
12″ subwoofer · 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, 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) | Flat and accurate · 0.73 |
|---|---|
| Fc | 63 Hz |
| F3 (−3 dB, no cabin gain) | 65 Hz |
| Example box (outside) | 14 3/16″ × 14 3/16″ × 10 1/16″ |
Ported
deeper, louder| Tuning (Fb) | 34 Hz |
|---|---|
| Port | slot 1 15/16 × 14 5/16″, 24 1/2″ long |
| Port velocity at 500 W | 65 ft/s |
| F3 (−3 dB, no cabin gain) | 32 Hz |
| Example box (outside) | 31 1/2″ × 15 3/4″ × 12 15/16″ |
Deeper: 1.80 ft³ (51 L) tuned to 36 Hz, 31 1/2″ × 15 3/4″ × 11″ 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 | 500 W |
| Fs | 33.2 Hz |
| Qts | 0.38 |
| Qes | 0.42 |
| Qms | 4.48 |
| Vas | 1.87 ft³ |
|---|---|
| Re | 3.45 Ω |
| Sd | ≈ 76 in² |
| Xmax | 0.43″ |
| EBP | 79 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 88.6 dB calc. |
Mounting dimensions
| Cutout diameter | 10 7/8″ |
|---|---|
| Mounting depth | 5 3/8″ |
| Overall diameter | 12 1/2″ |
“≈” 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 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.
- Ground Zero GZRW 30SPL (2x2 Ohm) 0.71 ft³ sealed · 2.26 ft³ ported
- AMPIRE VLEX12.4 0.71 ft³ sealed · 2.33 ft³ ported
- ESX QE1222 (2x2 Ohm) 0.71 ft³ sealed · 2.33 ft³ ported
- Mac Audio Premium Sub 300 0.71 ft³ sealed · 2.26 ft³ ported
- SPL Dynamics XTR-300D4 0.74 ft³ sealed · 2.44 ft³ ported
- Bomber Slim TKL 400W 4 Ohm (SW12STKL400-4) 0.78 ft³ sealed · 0.71 ft³ ported
FAQ
What box does the Audiobahn AW120SVC need?
Recommended net volume: 0.71 ft³ sealed, 2.26 ft³ ported tuned to 34 Hz — for one sub in a sedan at 500 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.
What are the Audiobahn AW120SVC Thiele/Small specs?
Fs 33.2 Hz, Qts 0.38, Vas 1.87 ft³, Xmax 0.43″.
What is the Audiobahn AW120SVC mounting depth?
Mounting depth is 5 3/8″, cutout diameter 10 7/8″. The inside depth of the box must exceed the mounting depth by at least 1″.
How much power does the Audiobahn AW120SVC handle and how do I wire it?
RMS power rating: 500 W. Wiring for several subs and amp power — in the wiring calculator.