Description

DS18 SLC12S
The SLC12S is a versatile 12‑inch single‑voice‑coil car subwoofer designed to deliver deep, punchy bass and strong low‑frequency response with easy installation and broad compatibility. It features a single 4 Ω voice coil (SVC) and a 2″ high‑temperature aluminum voice coil former with CCAW winding, giving it 250 W RMS and 500 W peak power handling with efficient performance. Built with a non‑pressed paper cone, foam surround, steel basket, and 45 oz ferrite magnet, this subwoofer offers a wide frequency response from about 25 Hz to 4.2 kHz and a high sensitivity rating (90 dB) for strong bass output. Compact yet powerful, the SLC12S is an ideal upgrade for stock systems or beginner car audio builds, fitting well in sealed or ported enclosures with a shallow 5.47″ mounting depth and 10.9″ cut‑out diameter for hassle‑free installation.
Specifications
| Parameter | Value |
|---|---|
| SKU | SLC-12S |
| Nominal Diameter | 12″ / 305 mm |
| Nominal Impedance | 4 Ohm |
| RMS Power Handling | 250 W |
| Maximum Power Handling | 500 W |
| Sensitivity (1W/1m) | 90 dB |
| Frequency Response | 25 Hz – 4.2 kHz |
| Recommended Low-Pass Crossover | 90 Hz |
Motor & Construction
| Parameter | Value |
|---|---|
| Voice Coil Diameter | 2″ / 50.8 mm |
| Voice Coil Former Material | Aluminum |
| Winding Material | CCAW |
| Cone Material | Non-Pressed Paper |
| Dust Cap Material | Paper |
| Surround Material | Foam |
| Basket Material | Steel |
| Basket Color / Finish | Gloss Black |
| Magnet Material | Ferrite |
| Magnet Weight | 45 oz |
Thiele & Small Parameters
| Parameter | Value |
|---|---|
| Vas (Equivalent Volume) | 32.8 L / 1.15 ft³ |
| Fs (Free Air Resonance) | 41 Hz |
| Qms (Mechanical Q) | 4.611 |
| Qes (Electrical Q) | 1.116 |
| Qts (Total Q) | 0.898 |
| Mms (Moving Mass) | 174.993 g |
| Cms (Compliance) | 0.049 mm/N |
| BL Factor | 12.946 |
| Le (Voice Coil Inductance) | 1.018 mH |
| Sd (Diaphragm Area) | 530.93 cm² |
| Re (DC Resistance) | 3.4 ohms |
| EBP | 36.73 |
Recommended Enclosures
| Parameter | Value |
|---|---|
| Sealed Internal Volume | 21.2 L / 0.75 ft³ |
| Sealed Box Output Response (F3) | 42 Hz |
| Ported Internal Volume | 39.6 L / 1.4 ft³ |
| Port Size (W × H × Length) | 1.26″ × 12.28″ × 24.35″ / 32.1 × 312 × 618.4 mm |
| Port Tuning Frequency (Fb) | 32 Hz |
| Ported Box Output Response (F3) | 26 Hz |
Physical Measurements & Packaging
| Parameter | Value |
|---|---|
| Overall Diameter | 12.44″ / 316 mm |
| Overall Depth | 6.42″ / 163 mm |
| Front Mount Baffle Cutout | 10.9″ / 277 mm |
| Mounting Depth | 5.47″ / 139 mm |
| Motor Diameter | 5.94″ / 151 mm |
| Gross Single Unit Weight | 10 lb |
| Single Unit Box Dimensions (W × L × H) | 13.25 × 13.25 × 7.25 in |
| Units per Master Carton | 4 |
| Gross Master Carton Weight | 42.5 lb |
| Master Carton Dimensions (W × L × H) | 27.25 × 14 × 15.25 in |
Product Overview
12” Select Car Subwoofer 500W 4-Ohm SVC
Introducing the DS18 SLC12S, a game-changing subwoofer that will revolutionize any car’s audio system.
The Select Series Subwoofers from DS18 are the epitome of excellence in car audio. Available in 8″, 10″, and 12″ sizes, these subwoofers feature sleek black steel baskets that exude confidence and sophistication. Designed for beginning car audiophiles and savvy deal-finders, the Select Series surpasses all other entry-level offerings in terms of quality and RMS power.
The SLC12S also boasts a high-quality ferrite motor with an aluminum voice coil, ensuring exceptional power-to-DB efficiency and unparalleled loudness. These single voice coil subwoofers offer simplicity, compatibility, ease of wiring, flexibility in amplifier selection and wiring configurations, affordability, and a wide variety of options. Its black aluminum voice coil former adds to its durability, ensuring that the SLC12S will never let you down, even during the most intense bass-heavy sessions.
With its 500W of MAX power handling and 250W of RMS power handling, this subwoofer delivers a thunderous audio experience that will leave you breathless. The lower end of the SLC12S’s frequency response (25Hz) allows the SLC12S to reproduce deep, rumbling bass notes with authority. On the upper end of the frequency response (4.2kHz), the SLC12S maintains its fidelity, accurately reproducing midrange frequencies. The wide frequency response of the SLC12S makes it a versatile subwoofer that excels in various genres and applications.
Installation is a breeze, thanks to the SLC12S’s thoughtful design. With a mounting cut-out of 10.9″ and a shallow mounting depth of 5.47″, this subwoofer seamlessly integrates into your vehicle, without compromising valuable space. Its overall diameter of 12.44″ and depth of 6.42″ guarantee a perfect fit, making it an ideal choice for various car models.




















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