Vibe Audio BlackDeath Comp 15 HEX D1 (BLACKDEATHC15HEX-V7)
15″ subwoofer · dual 1 Ω · 5,000 W RMS
The Vibe Audio BlackDeath Comp 15 HEX D1 (BLACKDEATHC15HEX-V7) is a 15″ subwoofer. With Qts 0.25 and EBP 109 it suits a ported box: deeper and louder; sealed, the bass sounds a bit dry.
| Source | vibeaudio.co.uk · manufacturer data |
|---|---|
| Checked against source | October 2026 |
| Thiele/Small parameters | not in the spec sheet: Xmax — typical value for the size used |
| 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, 5,000 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) | Dry and tight · 0.39 |
|---|---|
| Fc | 44 Hz |
| F3 (−3 dB, no cabin gain) | 99 Hz |
| Example box (outside) | 17 5/16″ × 17 5/16″ × 9 7/8″ |
Ported
deeper, louder| Tuning (Fb) | 31 Hz |
|---|---|
| Port | slot 5 5/16 × 16 11/16″, 63 1/2″ long |
| Port velocity at 5,000 W | 86 ft/s |
| F3 (−3 dB, no cabin gain) | 78 Hz |
| Example box (outside) | 31 1/2″ × 18 1/8″ × 26 1/4″ |
At 5,000 W this example’s port will be noisy: air speed 86 ft/s, while the limit is 82 ft/s. It stays quiet up to about 4,500 W. Full power needs a port of at least 93.1 in², which means a bigger box than this example — size it in the designer.
Open ported box in designerDeeper: 2.22 ft³ (63 L) tuned to 25 Hz, 31 1/2″ × 18 1/8″ × 13 1/16″ 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 | 15″ |
|---|---|
| Voice coils | dual 1 Ω |
| RMS power | 5,000 W |
| Fs | 28.4 Hz |
| Qts | 0.25 |
| Qes | 0.26 |
| Qms | 5.43 |
| Vas | 1.53 ft³ |
| Re (one coil) | 0.9 Ω |
|---|---|
| Sd | 116.3 in² |
| Xmax | ≈ 0.39″ |
| Mms | 580 g calc. |
| BL | 18.9 T·m calc. |
| EBP | 109 — suits ported calc. |
| Sensitivity, 1 W / 1 m | 87.8 dB calc. |
Mounting dimensions
| Cutout diameter | 14 1/8″ |
|---|---|
| Mounting depth | ≈ 7 1/16″ |
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
Other Vibe Audio 15″ models
- Vibe Audio BlackAir 15 D2 (BLACKAIR15D2-V7) 15″ · dual 2 Ω
- Vibe Audio BlackDeath 15 D1 SPL (BD15D1SPL-V4) 15″ · dual 1 Ω
- Vibe Audio BlackDeath 15 D2 (BD15D2-V4) 15″ · dual 2 Ω
- Vibe Audio BlackDeath 15 D2 SPL (BD15D2SPL-V4) 15″ · dual 2 Ω
- Vibe Audio BlackDeath 15 D4 (BD15D4-V4) 15″ · dual 4 Ω
- Vibe Audio BlackDeath 15 HEX D1 (BLACKDEATH15HEX-V7) 15″ · dual 1 Ω
Similar 15″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- Edge EDX15D1SPL-E7 1.06 ft³ sealed · 3.46 ft³ ported
- Sundown Audio SDDN-15 D1 1.80 ft³ sealed · 3.35 ft³ ported
- American Bass HURRICANE-1511 1.62 ft³ sealed · 3.50 ft³ ported
- DC Audio Level 6 M6 15 D0.7 1.84 ft³ sealed · 3.64 ft³ ported
- DC Audio Level 6 M6 15 D1 1.84 ft³ sealed · 3.64 ft³ ported
- DC Audio Level 6 M6 15 D2 1.84 ft³ sealed · 3.64 ft³ ported
All 15″ subwoofers in our database →
FAQ
What box does the Vibe Audio BlackDeath Comp 15 HEX D1 (BLACKDEATHC15HEX-V7) need?
Recommended net volume: 1.06 ft³ sealed, 3.46 ft³ ported tuned to 31 Hz — for one sub in a sedan at 5,000 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 Comp 15 HEX D1 (BLACKDEATHC15HEX-V7) Thiele/Small specs?
Fs 28.4 Hz, Qts 0.25, Vas 1.53 ft³, Sd 116.3 in².
How much power does the Vibe Audio BlackDeath Comp 15 HEX D1 (BLACKDEATHC15HEX-V7) handle and how do I wire it?
RMS power rating: 5,000 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 Comp 15 HEX D1 (BLACKDEATHC15HEX-V7) better sealed or ported?
EBP 109: a ported box (3.46 ft³, tuned to 31 Hz) suits it best — deeper and louder. Sealed (1.06 ft³) the bass is drier.
What port does the Vibe Audio BlackDeath Comp 15 HEX D1 (BLACKDEATHC15HEX-V7) need?
For the 3.46 ft³ ported box tuned to 31 Hz: slot 5 5/16 × 16 11/16″, 63 1/2″ long, area 88.7 in²; or a round port Ø10 5/8″, ≈ 63 1/2″ long. Port air speed at 5,000 W: 86 ft/s.
What box do two Vibe Audio BlackDeath Comp 15 HEX D1 (BLACKDEATHC15HEX-V7) subs need?
Two subs need twice the volume: 2.12 ft³ sealed, or 6.92 ft³ ported at the same 31 Hz tuning with twice the port area. One shared chamber or one per sub — whatever fits your vehicle.