Audiobahn AWC12Q
12″ subwoofer · 500 W RMS
The Audiobahn AWC12Q is a 12″ subwoofer. With Qts 0.59 and EBP 44 it suits a sealed box: tight bass in a small enclosure; a ported box would need a lot of volume. Modest excursion (Xmax 0.31″) — for clean sound at moderate levels, not for SPL competitions.
| Source | web.archive.org · manufacturer data |
|---|---|
| Checked against source | October 2026 |
| Thiele/Small parameters | complete |
| 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) | Tight and punchy · 0.91 |
|---|---|
| Fc | 48 Hz |
| F3 (−3 dB, no cabin gain) | 42 Hz |
| Example box (outside) | 31 1/2″ × 15 3/4″ × 9 1/16″ |
Ported
deeper, louder| Tuning (Fb) | 34 Hz |
|---|---|
| Port | slot 1 9/16 × 14 5/16″, 22 15/16″ long |
| Port velocity at 500 W | 57 ft/s |
| F3 (−3 dB, no cabin gain) | 33 Hz |
| Example box (outside) | 31 1/2″ × 15 3/4″ × 11 1/4″ |
Deeper: 3.07 ft³ (87 L) tuned to 34 Hz, 31 1/2″ × 15 3/4″ × 15 13/16″ 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 | 500 W |
| Fs | 31.4 Hz |
| Qts | 0.59 |
| Qes | 0.71 |
| Qms | 3.57 |
| Vas | 2.44 ft³ |
| Re | 3.3 Ω |
|---|---|
| Sd | 79.1 in² |
| Xmax | 0.31″ |
| Vd | 24.9 in³ calc. |
| Mms | 137 g calc. |
| BL | 11.2 T·m calc. |
| EBP | 44 — suits sealed calc. |
| Sensitivity, 1 W / 1 m | 86.8 dB calc. |
Mounting dimensions
| Cutout diameter | 10 7/8″ |
|---|---|
| Mounting depth | 5 1/16″ |
| Overall diameter | 12 1/2″ |
Where it fits in a vehicle
Spots from our vehicle guides where the cutout, mounting depth and recommended box fit. The spot sizes are approximate — measure your own vehicle.
- Bronco 4-door — behind the rear seat sealed and ported box
- Wrangler 4-door, hard top — behind the rear seat sealed and ported box
- Wrangler 4-door, soft top — behind the rear seat sealed and ported box
- Silverado / Sierra Crew Cab — under the rear seat sealed and ported box
- FJ Cruiser — behind the rear seat sealed and ported box
- El Camino 1978–87 — behind the seat sealed and ported box
- Cherokee XJ — cargo area, spare moved out sealed and ported box
- Excursion — behind the third row sealed and ported box
- Mustang 2015–2023 coupe — trunk sealed and ported box
- Challenger / Charger — trunk sealed and ported box
- Club Car Precedent — under the rear seat sealed box
“≈” 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.
- Vibe Audio Slick 12 D2 (SLICK12D2-V0) 1.77 ft³ sealed · 1.84 ft³ ported
- Ground Zero GZIW 300 (4 Ohm) 1.73 ft³ sealed · 1.94 ft³ ported
- Hertz Dieci DS 30.3 (SVC 4 ohm) 1.84 ft³ sealed · 0.85 ft³ ported
- MTX Audio T5512-04 1.94 ft³ sealed · 1.91 ft³ ported
- Clarion SW1251 1.91 ft³ sealed · 1.91 ft³ ported
- Kicker Solo-Baric L5 12" 2-Ohm DVC (S12L52) 2.30 ft³ sealed · 2.15 ft³ ported
FAQ
What box does the Audiobahn AWC12Q need?
Recommended net volume: 1.80 ft³ sealed, 1.94 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 AWC12Q Thiele/Small specs?
Fs 31.4 Hz, Qts 0.59, Vas 2.44 ft³, Xmax 0.31″, Sd 79.1 in².
What is the Audiobahn AWC12Q mounting depth?
Mounting depth is 5 1/16″, 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 AWC12Q handle and how do I wire it?
RMS power rating: 500 W. Wiring for several subs and amp power — in the wiring calculator.
Is the Audiobahn AWC12Q better sealed or ported?
EBP 44: a sealed box (1.80 ft³) suits it best — tight bass in a compact enclosure. Ported is possible (1.94 ft³, tuned to 34 Hz) but larger.
What port does the Audiobahn AWC12Q need?
For the 1.94 ft³ ported box tuned to 34 Hz: slot 1 9/16 × 14 5/16″, 22 15/16″ long, area 22.6 in²; or a round port Ø5 3/8″, ≈ 22 15/16″ long. Port air speed at 500 W: 57 ft/s.
What box do two Audiobahn AWC12Q subs need?
Two subs need twice the volume: 3.60 ft³ sealed, or 3.88 ft³ ported at the same 34 Hz tuning with twice the port area. One shared chamber or one per sub — whatever fits your vehicle.