Helix IK ER8.2-DVC2 MK2 – dual 8″ round spare-wheel subwoofer, ISM-ready
The IK ER8.2-DVC2 MK2 is the twin-driver model of the HELIX IMPACT round spare-wheel enclosures. Its round, shallow cabinet fits into the spare wheel recess, so strong bass can be added without sacrificing boot space.
Two 200 mm woofers with hand-scooped paper cones work in a vented enclosure tuned for sound quality and impactful, precise bass. The MK2 brings the new plug-in terminal with MOLEX connector and ISM readiness, allowing an active upgrade by swapping the terminal.
Key Features
- Spare-wheel format: Compact round enclosure, only 160 mm high, for integration in the spare wheel recess.
- Twin 8″ woofers: Two 200 mm high-excursion HELIX IK W8 drivers with hand-scooped paper cones.
- Vented construction: Bass-reflex tuning at 41 Hz for sound quality and bass dispersion.
- 600 W RMS power handling: Recommended amplifier power 150–600 W RMS.
- Flexible voice-coil wiring: The dual voice coil can be configured at the terminal as 1 x 1 Ω (for HELIX and MATCH monoblocks), 1 x 4 Ω (for bridged channels of multichannel amplifiers such as HELIX AMPLIFY) or 2 x 2 Ω (for parallel operation on multichannel units such as HELIX NEXT and MATCH UPGRADE).
- ISM-ready: Swapping the passive terminal for the optional IMPACT Subwoofer Module ISM 400.2DSP turns the IK ER8.2-DVC2 MK2 into an active subwoofer – a direct-fit amplifier module with integrated DSP intended for upgrading modern vehicles with factory sound systems, without rebuilding the existing installation.
- Plug-in MK2 terminal: The new detachable terminal provides a screw connection for ordinary speaker cable plus a standardised MOLEX connector for custom wiring harnesses – HELIX flexibility combined with the plug & play approach of the MATCH ecosystem.
- Short-circuit protection: Because the plug is removed together with the cable, no bare wire ends are left loose in the vehicle, and the enclosure can be taken out and refitted in seconds.
- Flush-mounted chassis: Space-saving, sleek and better protected.
- Finish and mounting: Sturdy carpet covering with embroidered HELIX logo; mounting kit included for the spare wheel recess.
Drivers & Construction
Two flush-mounted HELIX IK W8 chassis (200 mm / 8″) with hand-scooped paper cones in a round, carpeted vented enclosure.
Acoustic Performance
- Power handling: 600 W RMS; recommended amplifier power 150–600 W RMS
- Impedance: 2 x 2 Ω, 1 x 4 Ω or 1 x 1 Ω (selectable at the terminal)
- Linear excursion (Xlin): ±8 mm; maximum mechanical excursion (Xmax): ±17 mm
- Port tuning frequency: 41 Hz
- Sensitivity: 92 dB @ 2.83 V / 1 m; 89 dB @ 1 W / 1 m
Installation Notes
- Dimensions (diameter x height): 580 x 160 mm (22.8 x 6.3″)
- Mounting kit included for securing the enclosure in the spare wheel recess
- Recommended DSP settings: “Self-define” high-pass at 35 Hz, Q 1.0; EQ filter at 60 Hz, Q 1.0, −1 dB
- Compatible IMPACT Subwoofer Module: HELIX ISM 400.2DSP
Technical Specifications
| Power handling RMS | P | 600 Watts |
| Recommended amplifier power | RMS | 150 – 600 Watts |
| Impedance | z | 2 x 2 Ω / 1 x 4 Ω / 1 x 1 Ω |
| Max. linear excursion | Xlin | +/- 8 mm |
| Max. mechanical excursion | Xmax | +/- 17 mm |
| Port tuning frequency | Fb | 41 Hz |
| Sensitivity |
SPL |
92 dB @ 2.83V / 1m |
| Dimensions (D x H) | 580 x 160 mm / 22.8 x 6.3” |
|
| Integrated subwoofer chassis | 2 x HELIX IK W8-SVC2 | |
| Recommended DSP settings | “Self-define” highpass 35 Hz / Q = 1.0; EQ filter: 60 Hz / Q = 1.0 / -1 dB |
Scope of Delivery
1 x Round ported subwoofer IK ER8.2-DVC2 MK2
1 x Mounting kit
1 x Data sheet
