Description
DS18 DIA-CARBON15.1D
The DIA‑CARBON15.1D is a high‑excursion 15‑inch carbon fiber car subwoofer engineered to deliver deep, powerful bass and extreme low‑frequency output for serious audio systems and SPL competition builds. Featuring a rigid carbon fiber cone and dust cap with a lightweight yet strong construction, it offers improved response with reduced distortion. Powered by dual 1 Ω voice coils, a massive 425 oz ferrite magnet, and 3.5‑inch aluminum CCAR wound voice coils, this sub handles up to 3500 W RMS and 7000 W peak power with reliable performance. Its wide frequency response from approximately 10 Hz to 200 Hz and 22.5 mm Xmax excursion produce chest‑thumping bass that fills the cabin with authoritative low‑end impact, whether in sealed or ported enclosures tuned for tight punch or extended boom.
Specifications
| Parameter | Value |
|---|---|
| Nominal Diameter | 15″ / 381 mm |
| Nominal Impedance | 1 + 1 Ohms |
| RMS Power Handling | 3500 W |
| MAX Power Handling | 7000 W |
| Sensitivity (1W/1M) | 84 dB |
| Frequency Response | 10 – 200 Hz |
| Recommended Low-Pass Crossover | 60 Hz |
Features
| Parameter | Value |
|---|---|
| Improved Heat Dissipation | Yes |
| Cone Shape | Conic |
| Speaker Terminals | Push Terminals (4 ga) |
Motor Specifications
| Parameter | Value |
|---|---|
| Voice Coil Diameter | 3.5″ / 89 mm |
| Voice Coil Former Material | Aluminum |
| Winding Material | CCAR |
| Cone Material | Carbon Fiber |
| Dust Cap Material | Carbon Fiber |
| Dust Cap Size | 7″ / 180 mm |
| Surround Material | Foam |
| Spider Diameter | 9″ / 228 mm |
| Leads Connection Type | Spider Crossed |
| Basket Material | Aluminum |
| Basket Color / Finish | Aluminum / Black |
| Magnet Material | Ferrite |
| Magnet Weight | 425 oz |
Thiele & Small Parameters
| Parameter | Value |
|---|---|
| Equivalent Volume (Vas) | 34.26 L / 1.209 ft³ |
| Excursion (Xmax, one way) | 22.5 mm |
| Free Air Resonance (Fs) | 38 Hz |
| Mechanical Factor (Qms) | 5.224 |
| Electrical Factor (Qes) | 1.083 |
| Total Factor (Qts) | 0.89 |
| Moving Mass (Mms) | 442.7 g |
| Compliance (Cms) | 39.72 mm/N |
| BL Factor | 13.96 |
| Voice Coil Inductance (Le) | 0.88 mH |
| Diaphragm Area (Sd) | 779.3 cm² |
| DC Resistance (Re) | 1 + 1 Ohms |
| Efficiency Bandwidth Product (EBP) | 35 |
Recommended Enclosures
Sealed Enclosure
| Parameter | Value |
|---|---|
| Internal Volume | 70 L / 2.5 ft³ |
| Sealed Box Output Response (F3) | 35 Hz |
Ported Enclosure
| Parameter | Value |
|---|---|
| Internal Volume | 113.2 L / 4 ft³ |
| Port Size (W × H × L) | 3″ × 15″ × 22.4″ |
| Port Tuning Frequency (Fb) | 32 Hz |
| Ported Box Output Response (F3) | 25 Hz |
Measurements
| Parameter | Value |
|---|---|
| Overall Diameter | 15.5″ / 394 mm |
| Overall Depth | 12.75″ / 324 mm |
| Front Mount Baffle Cutout | 14.15″ / 360 mm |
| Mounting Depth | 10.9″ / 277 mm |
| Motor Diameter | 9″ / 230 mm |
Product Overview
15″ High Excursion Subwoofer with Carbon Fiber Cone | 1-Ohm DVC
Push your system to the limits with the DIA-CARBON15.1D. This 15-inch subwoofer delivers 3500W RMS and 7000W peak power—built for SPL competitions and high-output car audio systems.
Lightweight Carbon Fiber Precision
Crafted from real carbon fiber, the cone and dust cap provide lightning-fast response and rock-solid durability. Experience tighter, distortion-free bass that stays sharp even under extreme excursion.
True High-Excursion Design
With a massive 22.5mm Xmax, this sub moves serious air for deep, chest-thumping bass you can feel as well as hear. The oversized dual 3.5″ aluminum CCAR voice coils and 425 oz ferrite magnet keep the motor cool and strong during marathon sessions!
Flexible Enclosure Options
Optimize your sound with sealed or ported box setups. Recommended volumes: 2.5 ft³ sealed or 4 ft³ ported for that perfect balance of punch and boom.
Precision Engineering, Heavy-Hitting Performance
With a frequency response from 10Hz to 200Hz the DIA-CARBON15.1D delivers deep, clean bass with minimal amplifier strain—ready for high-performance in any build.
Black Diamond’s DIA-CARBON15.1D is engineered to own every beat.
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