Helix IK ES10.1-DVC2 MK2 – ultra-shallow 10″ downfire subwoofer for hidden installation
The IK ES10.1-DVC2 MK2 is the flattest of the HELIX IMPACT downfire enclosures. Its very shallow bass-reflex cabinet, just 135 mm high, is intended for places where ordinary subwoofers do not fit – for example beneath a double loading floor in the boot.
To keep such a flat cabinet free of unwanted resonance, the magnet system is bolted to the rear panel for additional stiffness. The MK2 version brings the new plug-in terminal with MOLEX connector and ISM readiness for a later active upgrade.
Key Features
- Downfire design: Using the floor as a reflector distributes bass evenly, raises low-frequency output, protects the driver and allows a low profile.
- Very shallow ported enclosure: 135 mm overall height with bass-reflex tuning at 37 Hz.
- 250 mm IK S10-DVC2 shallow chassis: Heavy-duty dual voice coil and a rigid sandwich paper cone for high SPL with precise, detailed bass.
- Stiffened construction: Magnet system fixed to the enclosure back panel to reduce vibration.
- 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 ES10.1-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.
- Secure placement: Velcro-backed feet hold the enclosure firmly and reduce vibration under heavy bass.
- Durable finish: Sturdy carpet covering with an embroidered HELIX logo.
Drivers & Construction
One integrated HELIX IK S10-DVC2 shallow-mount chassis (250 mm / 10″) with sandwich paper cone and dual 2 Ω voice coils, firing downwards from a flat, carpeted bass-reflex enclosure; magnet bolted to the rear panel.
Acoustic Performance
- Power handling: 300 W RMS; recommended amplifier power 150–300 W RMS
- Impedance: 2 x 2 Ω, 1 x 4 Ω or 1 x 1 Ω (selectable at the terminal)
- Linear excursion (Xlin): ±6 mm; maximum mechanical excursion (Xmax): ±15 mm
- Port tuning frequency: 37 Hz
- Sensitivity: 91 dB @ 2.83 V / 1 m; 88 dB @ 1 W / 1 m
Installation Notes
- Dimensions (H x W x D): 135 x 725 x 350 mm (5.3 x 28.5 x 13.8″)
- Suggested location: under a double loading floor or other hidden spaces in the boot
- Recommended DSP settings: “Self-define” high-pass at 37 Hz, Q 1.2; EQ filter at 95 Hz, Q 0.7, −3 dB
- Compatible IMPACT Subwoofer Module: HELIX ISM 400.2DSP
Technical Specifications
| IK ES10.1-DVC2 MK2 – 2 x 2 Ohms | ||
| Power handling RMS | P | 300 Watts |
| Recommended amplifier power | RMS | 150 – 300 Watts |
| Impedance | z | 2 x 2 Ω / 1 x 4 Ω / 1 x 1 Ω |
| Max. linear excursion | Xlin | +/- 6 mm |
| Max. mechanical excursion | Xmax | +/- 15 mm |
| Port tuning frequency | Fb | 37 Hz |
| Sensitivity |
SPL |
91 dB @ 2.83V / 1m |
| Dimensions (H x W x D) |
135 x 725 x 350 mm |
|
| Integrated subwoofer chassis | HELIX IK S10-DVC2 | |
| Recommended DSP settings | “Self-define” highpass 37 Hz / Q = 1.2; EQ filter: 95 Hz / Q = 0.7 / -3 dB |
Scope of Delivery
1 x Downfire enclosure subwoofer IK ES10.1-DVC2 MK2
1 x Data sheet
