DLS Reference RCS12.D2

The DLS Reference RCS12.D2 is a high-quality 30 cm (12-inch) slim subwoofer that combines powerful bass reproduction with an exceptionally slim design. As part of the DLS Reference series, it was developed for discerning music lovers who value precise, dynamic, and natural low-frequency response.

With a power handling capacity of 600 watts RMS and an installation depth of just 107 mm, the RCS12.D2 delivers impressive bass performance while taking up minimal space. The high-quality sandwich composite cone, combined with the sturdy die-cast aluminum basket, ensures controlled, detailed sound reproduction and high mechanical stability.

The 63.5 mm, four-layer copper voice coil mounted on a TIL voice coil carrier ensures reliable power transmission. Thanks to the dual 2-ohm voice coils, the subwoofer can be flexibly configured for 1 ohm or 4 ohms and adapted to different amplifiers.

Thanks to its design, the DLS Reference RCS12.D2 is particularly well-suited for compact, sealed subwoofer enclosures, but can also be used in tuned bass-reflex enclosures.

Technical Specifications

• Manufacturer: DLS

• Series: Reference

• Model: RCS12.D2

• Product Type: Slim Subwoofer / Flat Subwoofer

• Nominal diameter: 300 mm (12 inches)

• RMS Power Handling: 600 watts

• Maximum power rating: 1,200 watts

• Impedance: 2 × 2 ohms (dual voice coil)

• Load impedance: 1 ohm or 4 ohms

• Sensitivity: 87.5 dB (1 W / 1 m)

• Frequency range: 25–500 Hz

• Voice coil diameter: 63.5 mm (2.5 inches)

• Voice coil material: Four-layer copper winding

• Voice Coil Carrier: TIL

• Diaphragm material: Sandwich composite material

• Dust-proof cap: Polypropylene (PP)

• Basket material: Die-cast aluminum

• Magnetic material: Ferrite

• Magnet weight: 65 oz (approx. 1.84 kg)

• Installation depth: 107 mm

• Installation opening: 285 mm

• Outer diameter: 325 mm

• Weight: 7.1 kg
  
  

Thiele-Small parameters

• Resonance frequency (Fs): 29 Hz

• DC resistance (Re): 3.8 ohms (1.9 + 1.9 ohms)

• Mechanical Grade (Qms): 5.601

• Electrical quality (Qes): 0.452

• Total quality (Qts): 0.418

• Equivalent volume (Vas): 67.2 liters

• Moving mass (Mms): 178.5 g

• Suspension compliance (cm/N): 0.165 mm/N

• Force factor (BL): 21.7 Tm

• Effective membrane area (Sd): 530.9 cm²

• Linear diaphragm stroke (Xmax): ±11 mm

• Specified displacement (Vd): 2.9 liters
  
  

Case Recommendations According to the Manufacturer

Enclosed housing:

• Recommended net volume: 20–33 liters

• Overall Quality (Qtc): 0.829 – 0.707

• Lower cutoff frequency (F3): 54 – 51 Hz

Bass-reflex enclosure:

• Recommended net volume: 42 liters

• Tuning frequency (Fb): 42 Hz

• Lower cutoff frequency (F3): 39 Hz

• Bass reflex port diameter: 104 mm

• Bass reflex port length: 325 mm

The enclosure volumes listed are based on the manufacturer's recommendations. When designing the enclosure, the displacement volume of the subwoofer and, if applicable, the bass reflex port must be taken into account

.

What's Included

• 1 × DLS Reference RCS12.D2 30 cm (12") subwoofer