Description
DS18 DIA-T12.4D
The DIA-T12.4D is a powerful 12-inch dual voice coil (DVC) subwoofer engineered to deliver earth-shaking bass and deep low frequencies for car audio systems. Featuring dual 3-inch aluminum voice coils, a premium non-pressed paper cone, and a sandblasted aluminum basket with a large 120 oz ferrite magnet, it offers robust performance and durability under heavy loads. With a dual 4+4 Ω impedance for flexible wiring options, the DIA-T12.4D can handle up to 1000 W RMS and 2000 W peak power, producing rich, deep bass from 20 Hz to 200 Hz with minimal distortion. Its substantial displacement volume and recommended low-pass crossover at 80 Hz make it ideal for bass-heavy systems, custom builds, and anyone aiming for powerful low-end impact.
Specifications
| Parameter | Value |
|---|---|
| Nominal Diameter | 12″ / 304 mm |
| Nominal Impedance | 4 + 4 Ohm |
| RMS Power Handling | 1000 W |
| MAX Power Handling | 2000 W |
| Sensitivity (1W/1m) | 82 dB |
| Frequency Response | 20 – 200 Hz |
| Recommended Low Pass Crossover | 80 Hz |
Motor & Construction
| Parameter | Value |
|---|---|
| Voice Coil Diameter | 3″ / 76.5 mm |
| Voice Coil Former Material | Aluminum |
| Winding Material | Copper |
| Cone Material | Non-Pressed Paper |
| Dust Cap Material | PPI |
| Surround Material | Foam |
| Basket Material | Aluminum |
| Basket Finish | Sandblasted Black |
| Magnet Material | Ferrite |
| Magnet Weight | 120 oz |
| Displacement Volume | 2.26 L / 0.08 ft³ |
Thiele & Small Parameters
| Parameter | Value |
|---|---|
| Vas (Equivalent Volume) | 22.23 L / 0.785 ft³ |
| Xmax (Excursion) | 24 mm |
| Fs (Free Air Resonance) | 32 Hz |
| Qms (Mechanical Factor) | 3.827 |
| Qes (Electrical Factor) | 0.637 |
| Qts (Total Factor) | 0.546 |
| Mms (Moving Mass) | 418.78 g |
| Cms (Compliance) | 55.6 M/N |
| BL Factor | 11.076 |
| Le (Voice Coil Inductance) | 0.53 mH |
| Sd (Diaphragm Area) | 530.93 cm² |
| Re (DC Resistance) | 1.8 + 1.8 Ohm |
| EBP | 50.2 |
Recommended Enclosures
Sealed Enclosure
| Parameter | Value |
|---|---|
| Internal Volume | 28.3 L / 1.0 ft³ |
| Output Response (F3) | 38 Hz |
Ported Enclosure
| Parameter | Value |
|---|---|
| Internal Volume | 45.3 L / 1.6 ft³ |
| Port Size (W × H × L) | 1.5″ × 11.81″ × 20.43″ |
| Port Size (mm) | 38 × 300 × 519 mm |
| Port Tuning Frequency (Fb) | 34 Hz |
| Output Response (F3) | 27 Hz |
Physical Measurements
| Parameter | Value |
|---|---|
| Overall Diameter | 12.7″ / 323 mm |
| Overall Depth | 8.46″ / 215 mm |
| Front Mount Baffle Cutout | 11.1″ / 282 mm |
| Mounting Depth | 7.03″ / 178.6 mm |
| Motor Diameter | 7.08″ / 180 mm |
Product Overview
12” Dual 3” Voice Coil Subwoofer with Aluminum Basket | 4+4-ohm DVC
The DIA-T12.4D is built for bass heads. This 12-inch dual voice coil subwoofer packs 1000W RMS and 2000W peak power handling, for hard-hitting low frequencies that make every beat feel alive.
Engineered for Power and Precision
Featuring dual 3” aluminum voice coils and a 4+4 ohm impedance, the DIA-T12.4D offers flexible wiring options so you can tailor your system for MAX output or high-efficiency.
Premium Materials for Maximum Performance
Its sandblasted black aluminum basket is built tough to resist heat and vibration. The large 120 oz ferrite magnet drives extremely large amounts of air for flawless output every session.
Deep Impact
With a frequency response from 20Hz to 200Hz and a recommended low-pass crossover at 80Hz, the DIA-T12.4D delivers earth-shaking lows with precision and clarity!
Built to Fit, Built to Last
Measuring 12.7” in diameter with a mounting depth of 7.03”, this subwoofer fits most custom builds while offering high displacement (2.26L) for powerful sound. It’s ready to handle long sessions and high excursion without breaking a sweat.
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