Helix IQ W10-DVC2

Helix IQ W10-DVC2 – 10″ audiophile subwoofer with Tuneable Mass System

The IQ W10-DVC2 is the 10-inch model of the HELIX IQ subwoofer range – an audiophile-grade subwoofer with maximum versatility for listeners who want high output and high sound quality. It is optimised for high-power amplifiers (recommended 300 to 750 W RMS) and suits compact sealed enclosures as well as high-output bass reflex systems.

With the proprietary Tuneable Mass System (TMS), weights on the dustcap change the moving mass: without them the driver is more efficient with faster transients for punchy setups, with them the resonance drops for deeper bass in sealed or low-tuned reflex boxes. A 3-layer fiberglass-Mylar honeycomb cone, a large vented pole piece with airflow-optimised basket and a precision die-cast aluminium basket with integrated grille ensure low distortion and stability at high excursion.

Key Features

• Audiophile grade: good low-frequency extension and accurate dynamics.
• High power: 750 W RMS / 1,500 W max power handling.
• Tuneable Mass System: three supplied tuning masses for fine-tuning T/S parameters before or after installation.
• Honeycomb cone: 3-layer fiberglass-Mylar for precision and internal damping.
• Dual 2 Ω voice coil: wiring as 2 x 2 Ω, 1 Ω or 4 Ω.
• Cooling: vented pole piece and airflow-optimised basket against overheating and thermal compression.
• Compact installs: sealed boxes from just 13 l net.
• Sealed or bass reflex: recommended box designs for both.
• Die-cast aluminium basket: with integrated protective grille.
• Long excursion: ±12 mm linear excursion.

Drivers & Construction

250 mm driver with fiberglass-Mylar honeycomb cone (363 cm² cone area), 63 mm dual voice coil with 32 mm winding height, vented pole piece and die-cast aluminium basket with integrated grille.

Acoustic Performance

Power handling 750 W RMS / 1,500 W max, recommended amplifier power from 300 W RMS, impedance 2 x 2 Ω (Re 2 x 1.9 Ω), sensitivity 89 dB at 2.83 V/1 m (86 dB at 1 W/1 m). Fixed T/S data: Qms 6.0, Cms 115 µm/N, Vas 21 l, BL 17.8 Tm, Rms 6.2 kg/s, Xmax ±12 mm. Depending on tuning mass (none / +1 / +2 / +3 TM): Fs 38 / 34 / 30 / 28 Hz, Mms 158 / 211 / 264 / 317 g, Qes 0.46 / 0.52 / 0.61 / 0.70, Qts 0.43 / 0.48 / 0.55 / 0.63.

Installation Notes

Outer diameter 275 mm (10.83″), installation diameter 234.6 mm (9.24″), installation depth 134.5 mm (5.30″). Recommended sealed enclosures range from 13 to 30 l net (lower -3 dB limit from 65 Hz down to 33 Hz). Recommended bass reflex enclosures range from 27 to 65 l net with an 80 mm port (50 cm²), port lengths 40–51 cm and tuning from 35 Hz down to 21 Hz (-3 dB from 33 Hz down to 18 Hz).

Technical Specifications

Scope of Delivery

1 x Subwoofer IQ W10-DVC2
1 x Installation gasket
2 x Mounting material
1 x Grille
2 x Grille removal tool
3 x Tuning mass (TM)
1 x Data sheet