Description
DS18 DIA-CARBON12.1D
The DIA-CARBON12.1D is a high-excursion 12-inch car subwoofer engineered for deep, powerful bass and extreme low-frequency performance. Featuring a real carbon fiber cone and dust cap for superior strength and reduced distortion, this subwoofer moves large volumes of air with precision and durability. Built with a massive 3.5-inch aluminum voice coil and 425 oz ferrite magnet, it handles 3500 W RMS and up to 7000 W peak power, delivering rich, chest-rattling bass from approximately 10 Hz to 200 Hz. With a dual 1 Ω voice coil configuration for flexible wiring and recommended tuning in sealed or ported enclosures, the DIA-CARBON12.1D is ideal for competition-grade systems and bass enthusiasts seeking unmatched low-end impact.
Specifications
| Parameter | Value |
|---|---|
| Nominal Diameter | 12″ / 305 mm |
| Nominal Impedance | 1 + 1 Ohms |
| RMS Power Handling | 3500 W |
| MAX Power Handling | 7000 W |
| Sensitivity (1W/1m) | 82 dB |
| Frequency Response | 10 – 200 Hz |
| Recommended Low-Pass Crossover | 60 Hz |
Features
| Feature | Value |
|---|---|
| Improved Heat Dissipation | Yes |
| Cone Shape | Conic |
| Speaker Terminals | Push Terminals (4 ga) |
Motor & Construction
| 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 | 6″ / 150 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 |
|---|---|
| Vas (Equivalent Volume) | 10.55 L / 0.372 ft³ |
| Xmax (One-Way Excursion) | 22.5 mm |
| Fs (Free Air Resonance) | 40 Hz |
| Qms (Mechanical Factor) | 4.93 |
| Qes (Electrical Factor) | 0.89 |
| Qts (Total Factor) | 0.75 |
| Mms (Moving Mass) | 468.183 g |
| Cms (Compliance) | 33.45 mm/N |
| BL Factor | 23.01 |
| Le (Voice Coil Inductance) | 1.86 mH |
| Sd (Diaphragm Area) | 471.4 cm² |
| Re (DC Resistance) | 2 + 2 Ohms |
| EBP | 44.9 |
Recommended Enclosures
Sealed Enclosure
| Parameter | Value |
|---|---|
| Internal Volume | 37 L / 1.3 ft³ |
| Output Response (F3) | 38 Hz |
Ported Enclosure
| Parameter | Value |
|---|---|
| Internal Volume | 56.6 L / 2.0 ft³ |
| Port Size (W × H × L) | 2″ × 12″ × 20.7″ |
| Port Tuning Frequency (Fb) | 35 Hz |
| Output Response (F3) | 27 Hz |
Physical Measurements
| Parameter | Value |
|---|---|
| Overall Diameter | 12.8″ / 326 mm |
| Overall Depth | 11.65″ / 296 mm |
| Front Mount Baffle Cutout | 11.15″ / 283 mm |
| Mounting Depth | 9.75″ / 248 mm |
| Motor Diameter | 9″ / 230 mm |
Product Overview
12″ High Excursion Subwoofer with Carbon Fiber Cone – 3500W RMS / 7000W Peak
The DIA-CARBON12.1D is built for monstrous low-end. With a jaw-dropping 3500W RMS and 7000W peak power handling, this 12-inch subwoofer delivers chest-rattling SPL.
Carbon-Fiber Boom
Lightweight yet unbreakable, the real carbon fiber cone and dust cap offer unmatched strength and stiffness. The 22.5mm Xmax excursion moves massive air with tight, distortion-free bass you can feel in your bones.
Engineered for Endurance
A massive 3.5″ aluminum voice coil with CCAR winding maximizes heat dissipation, while the 425 oz ferrite magnet packs serious magnetic force to keep your bass clean and powerful.
Versatile Box Compatibility
Drop the DIA-CARBON12.1D into sealed enclosures (~1.3 ft³) for tight, punchy bass, or ported boxes (~2 ft³) for booming low-frequency extension. It flexes to fit your build and your sound.
Maximum Impact
With a wide frequency response from 10Hz to 200Hz and a sensitivity of 82 dB, this subwoofer brings detailed, impactful bass with minimal amplifier strain. Push your system harder without losing clarity or control.
Own the streets with Black Diamond’s DIA-CARBON12.1D!
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