Helix IK W6 – DVC2 – 2 x 2 Ohms

Helix IK W6 – 6″ subwoofer for compact vented enclosures

Version: DVC2 – 2 x 2 Ohms

The Helix IK W6 is the 6-inch model among the HELIX K-series subwoofer chassis, all of which are designed to perform in very compact enclosures. It is the solution when only a small or awkwardly shaped space is available in the vehicle for a custom enclosure, and the manufacturer states that this does not require acoustic compromises.

The cone is made from hand-formed (hand-scooped) paper fibres and is extremely stiff. Together with a heavy-duty driver and a double-ventilated voice coil, it converts amplifier power into high sound pressure with minimal compression, and the manufacturer credits it with a subtle, pleasant tonal character. Available as SVC2 (1 x 2 Ohms) or DVC2 (2 x 2 Ohms), so it can be matched to mono, two-channel or multichannel amplifiers.

Key Features

• Compact-enclosure design: Strong magnet system tuned for compact vented enclosures – makes efficient use of limited space in the vehicle.
• Voice coil versions: Available as SVC2 (1 x 2 Ohms) or DVC2 (2 x 2 Ohms), so it can be matched to mono, two-channel or multichannel amplifiers.
• Hand-scooped paper cone: Extremely stiff cone of hand-formed paper fibres for fast, precise transient response.
• Double-ventilated voice coil: Minimises compression effects and supports high power handling.
• Long-excursion rubber surround: High mechanical load capacity; Xmax ±6.0 mm.
• Power handling: 150 W RMS / 300 W max (DVC2 data).
• Terminals: Gold-plated terminals for maximum conductivity.
• Protective magnet cover: Rugged cover with HELIX lettering protects the magnet.
• Grille and gasket included: Ready for custom enclosure builds; the data sheet gives enclosure recommendations including DSP settings.

Drivers & Construction

• Nominal size 6″; outer diameter 164.2 mm / 6.46″.
• Cone material: hand-scooped paper; effective cone area (Sd) 123 cm².
• Voice coil: 37 mm diameter, 18 mm winding height, double-ventilated.
• Long-excursion rubber surround and rugged magnet cover with HELIX lettering.
• Gold-plated terminals.

Acoustic Performance

The figures published on the product page refer to the DVC2 (2 x 2 Ohms) version; SVC2 values are given in its separate data sheet.

• Power handling: 150 W RMS / 300 W max.
• Impedance: 2 x 2 Ohms (DC resistance 2 x 2.0 Ohms).
• Sensitivity: 89.0 dB @ 2.83 V / 1 m; 86.0 dB @ 1 W / 1 m.
• Resonance frequency (Fs): 50 Hz.
• Q factors: Qms 3.92, Qes 0.32, Qts 0.30.
• Equivalent air volume (Vas): 5.3 l; compliance (Cms) 261 µm/N.
• Force factor: 12.3 Tm; moving mass (Mms) 37 g; mechanical resistance (Rms) 3.04 kg/s.
• Maximum linear excursion (Xmax): ±6.0 mm.

Installation Notes

• Installation (cut-out) diameter: 132.5 mm / 5.22″; installation depth: 74.3 mm / 2.93″.
• Recommended vented enclosure (DVC2): 7 l net volume, port Ø 50 mm (20 cm²), 34 cm angled port, tuned to 45 Hz, -3 dB at 43 Hz; suggested DSP high-pass 45 Hz (Q 1.2) plus EQ 80 Hz, Q 1.0, +1.0 dB.

Technical Specifications

Scope of Delivery

1 x Subwoofer HELIX IK W6-DVC2
1 x Grille
1 x Gasket
1 x Data sheet