Helix IK ER8.1 – SVC2 – 1 x 2 Ohms

Helix IK ER8.1 – flat 8″ round spare-wheel subwoofer (SVC2, 1 x 2 Ω)

Version: SVC2 – 1 x 2 Ohms

The IK ER8.1 is a compact, space-saving HELIX IMPACT subwoofer in a very shallow round enclosure, designed to fit flat spare wheel recesses without compromising low-frequency reproduction. It is supplied in the SVC2 version with a 1 x 2 Ω single voice coil.

A vented enclosure provides sound quality and wide bass dispersion through the vehicle, while the 200 mm driver with sandwich paper cone delivers deep bass even in confined spaces. The 1 x 2 Ω configuration is intended to obtain maximum power output from a suitable amplifier.

Key Features

• Flat round enclosure: 120 mm overall height for flat spare wheel recesses.
• Vented construction: Bass-reflex tuning at 42 Hz for sound quality and bass dispersion.
• 200 mm IK S8-SVC2 driver: Sandwich paper cone for deep bass in tight spaces.
• 1 x 2 Ω single voice coil: For maximum amplifier output.
• Pluggable screw terminal: Quick and secure installation and removal.
• Flush-mounted chassis: Space-saving design with added protection.
• Durable finish: Carpet surface with an embroidered HELIX logo.
• Mounting kit included: Holds the enclosure firmly in the spare wheel recess.

Drivers & Construction

One flush-mounted HELIX IK S8-SVC2 chassis (200 mm / 8″) with sandwich paper cone and a single 2 Ω voice coil in a round, carpeted vented enclosure.

Acoustic Performance

• Power handling: 300 W RMS; recommended amplifier power 150–300 W RMS
• Impedance: 1 x 2 Ω
• Maximum excursion (Xmax): ±6.0 mm
• Port tuning frequency: 42 Hz
• Sensitivity: 91 dB @ 2.83 V / 1 m; 85 dB @ 1 W / 1 m

Installation Notes

• Dimensions (diameter x height): 580 x 120 mm (22.8 x 4.7″)
• Mounting kit included
• Recommended DSP settings: “Self-define” high-pass at 35 Hz, Q 1.0; no EQ filter required

Technical Specifications

Scope of Delivery

1 x Round ported subwoofer IK ER8.1-SVC2
1 x Mounting kit
1 x Data sheet