Vibe Audio BlackAir 12 D2 (BLACKAIR12D2-V7)
12″ subwoofer · dual 2 Ω · 750 W RMS
The Vibe Audio BlackAir 12 D2 (BLACKAIR12D2-V7) is a 12″ subwoofer. With Qts 0.56 and EBP 50 it works both sealed and ported: sealed is tighter and smaller, ported is deeper and louder.
| Source | vibeaudio.co.uk · manufacturer data |
|---|---|
| Checked against source | October 2026 |
| Thiele/Small parameters | complete |
| Mounting dimensions | 1 of 4 — missing: mounting depth, frame outer diameter, magnet diameter; the designer will use an estimate |
Recommended box
For a sedan, one sub, 750 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 | 44 Hz |
| F3 (−3 dB, no cabin gain) | 41 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″, 40 7/8″ long |
| Port velocity at 750 W | 64 ft/s |
| F3 (−3 dB, no cabin gain) | 31 Hz |
| Example box (outside) | 31 1/2″ × 15 3/4″ × 9 7/16″ |
Deeper: 2.83 ft³ (80 L) tuned to 25 Hz, 31 1/2″ × 15 3/4″ × 18 7/16″ 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 | dual 2 Ω |
| RMS power | 750 W |
| Fs | 31 Hz |
| Qts | 0.56 |
| Qes | 0.62 |
| Qms | 6.04 |
| Vas | 1.02 ft³ |
| Re (one coil) | 2 Ω |
|---|---|
| Sd | 72.9 in² |
| Xmax | 0.59″ |
| Vd | 43 in³ calc. |
| Mms | 284 g calc. |
| BL | 13.4 T·m calc. |
| EBP | 50 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 83.4 dB calc. |
Mounting dimensions
| Cutout diameter | 11 1/8″ |
|---|---|
| Mounting depth | ≈ 5 7/8″ |
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 and ported box
Judging by its value, the published Re is for both coils in series — converted to per coil.
“≈” 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
- vibeaudio.co.uk/wp-content/uploads/2019/08/Blackair-subwoofer-manual-050718.pdf
- vibeaudio.co.uk/wp-content/uploads/2025/09/Blackair-subwoofer-manual-050718.pdf
Other Vibe Audio 12″ models
- Vibe Audio BlackAir 12 D2 (BA12D2-V5) 12″ · dual 2 Ω
- Vibe Audio BlackAir 12 D2 (V4) 12″ · dual 2 Ω
- Vibe Audio BlackAir 12 D2S (BLACKAIR12D2S-V3) 12″ · dual 2 Ω
- Vibe Audio BlackDeath 12 D1 SPL (BD12D1SPL-V4) 12″ · dual 1 Ω
- Vibe Audio BlackDeath 12 D2 (BD12D2-V4) 12″ · dual 2 Ω
- Vibe Audio BlackDeath 12 D2 SPL (BD12D2SPL-V4) 12″ · dual 2 Ω
- Vibe Audio BlackDeath 12 D4 (BD12D4-V4) 12″ · dual 4 Ω
- Vibe Audio BlackDeath 12 HEX D1 (BLACKDEATH12HEX-V7) 12″ · dual 1 Ω
- Vibe Audio BlackDeath Comp 12 HEX D1 (BLACKDEATHC12HEX-V7) 12″ · dual 1 Ω
- Vibe Audio Pulse 12 (PULSE12-V0) 12″ · 4 Ω
- Vibe Audio Pulse 12 D2 (PULSE12D2-V3) 12″ · dual 2 Ω
- Vibe Audio Slick 12 D2 (SLICK12D2-V0) 12″ · dual 2 Ω
Similar 12″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- Pride HP Lite 12 D1.8 0.99 ft³ sealed · 1.13 ft³ ported
- Fi Audio Xv3 12 D1 0.78 ft³ sealed · 1.20 ft³ ported
- Swat GLK-P12D1 1.13 ft³ sealed · 1.20 ft³ ported
- Avatar Volcano 12 D2 0.85 ft³ sealed · 1.20 ft³ ported
- Fi Audio Xv3 12 D2 0.67 ft³ sealed · 1.20 ft³ ported
- CT Sounds OZONE-12 D2 1.27 ft³ sealed · 1.17 ft³ ported
All 12″ subwoofers in our database →
FAQ
What box does the Vibe Audio BlackAir 12 D2 (BLACKAIR12D2-V7) need?
Recommended net volume: 0.99 ft³ sealed, 1.17 ft³ ported tuned to 34 Hz — for one sub in a sedan at 750 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.
What are the Vibe Audio BlackAir 12 D2 (BLACKAIR12D2-V7) Thiele/Small specs?
Fs 31 Hz, Qts 0.56, Vas 1.02 ft³, Xmax 0.59″, Sd 72.9 in².
How much power does the Vibe Audio BlackAir 12 D2 (BLACKAIR12D2-V7) handle and how do I wire it?
RMS power rating: 750 W. Dual 2 Ω voice coils: series gives 4 Ω, parallel gives 1 Ω at the amp. Wiring for several subs and amp power — in the wiring calculator.
Is the Vibe Audio BlackAir 12 D2 (BLACKAIR12D2-V7) better sealed or ported?
EBP 50: both work — sealed 0.99 ft³ is tighter and smaller, ported 1.17 ft³ tuned to 34 Hz is deeper and louder.
What port does the Vibe Audio BlackAir 12 D2 (BLACKAIR12D2-V7) need?
For the 1.17 ft³ ported box tuned to 34 Hz: slot 1 9/16 × 14 5/16″, 40 7/8″ long, area 22.6 in²; or a round port Ø5 3/8″, ≈ 40 7/8″ long. Port air speed at 750 W: 64 ft/s.
What box do two Vibe Audio BlackAir 12 D2 (BLACKAIR12D2-V7) subs need?
Two subs need twice the volume: 1.98 ft³ sealed, or 2.33 ft³ ported at the same 34 Hz tuning with twice the port area. One shared chamber or one per sub — whatever fits your vehicle.