Vibe Audio BlackDeath 12 D1 SPL (BD12D1SPL-V4)
12″ subwoofer · dual 1 Ω · 3,000 W RMS
The Vibe Audio BlackDeath 12 D1 SPL (BD12D1SPL-V4) is a 12″ subwoofer. With Qts 0.58 and EBP 52 it works both sealed and ported: sealed is tighter and smaller, ported is deeper and louder. Long excursion (Xmax 0.98″) — built for loud music and high power.
| Source | vibeaudio.co.uk · 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 |
- Fs, Vas and Sd don't match the moving mass of 247.711 g (they give 364 g) — one of the spec sheet values is probably wrong.
Recommended box
For a sedan, one sub, 3,000 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 · 0.71 |
|---|---|
| Fc | 49 Hz |
| F3 (−3 dB, no cabin gain) | 50 Hz |
| Example box (outside) | 14 3/16″ × 14 3/16″ × 11 9/16″ |
Ported
deeper, louder| Tuning (Fb) | 35 Hz |
|---|---|
| Port | slot 1 9/16 × 14 5/16″, 39 5/8″ long |
| Port velocity at 3,000 W | 135 ft/s |
| F3 (−3 dB, no cabin gain) | 30 Hz |
| Example box (outside) | 31 1/2″ × 15 3/4″ × 9 1/4″ |
At 3,000 W this example’s port will be noisy: air speed 135 ft/s, while the limit is 82 ft/s. It stays quiet up to about 1,050 W. Full power needs a port of at least 37.3 in², which means a bigger box than this example — size it in the designer.
The volume and tuning are the recommendation, but the port doesn’t fit this example box. Size the box and port in the designer.
Open ported box in designerDeeper: 1.38 ft³ (39 L) tuned to 30 Hz, 21″ × 15 3/4″ × 11 5/8″ 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 1 Ω |
| RMS power | 3,000 W |
| Fs | 39.9 Hz |
| Qts | 0.58 |
| Qes | 0.76 |
| Qms | 2.42 |
| Vas | 0.45 ft³ |
| Re (one coil) | 1 Ω |
|---|---|
| Sd | 70.1 in² |
| Xmax | 0.98″ |
| Vd | 69 in³ calc. |
| Mms | 364 g calc. |
| BL | 11 T·m calc. |
| EBP | 52 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 82.2 dB calc. |
Mounting dimensions
| Cutout diameter | 11 1/16″ |
|---|---|
| Mounting depth | 9 1/16″ |
| Overall diameter | 12 11/16″ |
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
- 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
“≈” 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 Vibe Audio 12″ models
- Vibe Audio BlackAir 12 D2 (BA12D2-V5) 12″ · dual 2 Ω
- Vibe Audio BlackAir 12 D2 (BLACKAIR12D2-V7) 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 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.
- Rockford Fosgate Power T2D412 0.78 ft³ sealed · 1.80 ft³ ported
- Massive Audio BOA121 0.94 ft³ sealed · 1.13 ft³ ported
- Hifonics ZXT12D2 0.81 ft³ sealed · 1.17 ft³ ported
- Sundown Audio Xv3-12 D1 0.90 ft³ sealed · 2.51 ft³ ported
- Sundown Audio Xv4-12 D1 1.09 ft³ sealed · 2.51 ft³ ported
- Ground Zero GZNW 30XMAX-II (2x1 Ohm) 0.92 ft³ sealed · 1.20 ft³ ported
All 12″ subwoofers in our database →
FAQ
What box does the Vibe Audio BlackDeath 12 D1 SPL (BD12D1SPL-V4) need?
Recommended net volume: 0.85 ft³ sealed, 1.13 ft³ ported tuned to 35 Hz — for one sub in a sedan at 3,000 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.
What are the Vibe Audio BlackDeath 12 D1 SPL (BD12D1SPL-V4) Thiele/Small specs?
Fs 39.9 Hz, Qts 0.58, Vas 0.45 ft³, Xmax 0.98″, Sd 70.1 in².
What is the Vibe Audio BlackDeath 12 D1 SPL (BD12D1SPL-V4) mounting depth?
Mounting depth is 9 1/16″, cutout diameter 11 1/16″. The inside depth of the box must exceed the mounting depth by at least 1″.
How much power does the Vibe Audio BlackDeath 12 D1 SPL (BD12D1SPL-V4) handle and how do I wire it?
RMS power rating: 3,000 W. Dual 1 Ω voice coils: series gives 2 Ω, parallel gives 0.5 Ω at the amp. Wiring for several subs and amp power — in the wiring calculator.
Is the Vibe Audio BlackDeath 12 D1 SPL (BD12D1SPL-V4) better sealed or ported?
EBP 52: both work — sealed 0.85 ft³ is tighter and smaller, ported 1.13 ft³ tuned to 35 Hz is deeper and louder.
What port does the Vibe Audio BlackDeath 12 D1 SPL (BD12D1SPL-V4) need?
For the 1.13 ft³ ported box tuned to 35 Hz: slot 1 9/16 × 14 5/16″, 39 5/8″ long, area 22.6 in²; or a round port Ø5 3/8″, ≈ 39 5/8″ long. Port air speed at 3,000 W: 135 ft/s.
What box do two Vibe Audio BlackDeath 12 D1 SPL (BD12D1SPL-V4) subs need?
Two subs need twice the volume: 1.70 ft³ sealed, or 2.26 ft³ ported at the same 35 Hz tuning with twice the port area. One shared chamber or one per sub — whatever fits your vehicle.