Subwoofers — Krix Loudspeakers Seismix 1 Evara

The Seismix 1 Evara is a compact active subwoofer from Krix, the Australian loudspeaker maker producing locally since 1974. It is part of the Evara range launched on 7 November 2025, which restyles two existing hi-fi models - the Equinox bookshelf speaker and the Seismix 1 subwoofer - with new finishes and magnetic grilles while keeping the original acoustic design. The Australian price is AUD 1,345, and the original Seismix 1 in traditional finishes stays in production alongside it.

Key specs that matter

Krix fits a nominal 8-inch (200 mm) doped paper cone with a 38 mm (1.5-inch) voice coil wound on a high-power aluminium former and a vented magnet assembly. The built-in amplifier delivers 350 W RMS and 700 W maximum instantaneous power. In-room response spans 25 Hz to 200 Hz, and maximum output is 116 dB in-room. The cabinet measures 375 mm high, 295 mm wide and 320 mm deep and weighs 11 kg. The colour range runs to Studio Charcoal, Studio Green, Studio Navy, Studio Black and Studio White, with a mid-grey grille on the white version and charcoal grilles on the others.

Engineering and use context

Krix uses a ported cabinet in which both the driver and the vent point downward, so the cone and port face the floor and the visible sides stay clean. A continuously variable phase control runs from 0 to 180 degrees relative to the input signal, so its output can be matched in timing to the front pair. A low-pass filter runs upward from 50 Hz or can be bypassed entirely when an AV processor handles bass management. Power switching is signal sensing, with a 15-minute delay before the unit enters standby when no signal arrives. The magnetic grilles were added in response to customer feedback, and the rounded edges fit domestic furniture rather than a dedicated cinema. The Evara versions went on sale first in Australia, with an international rollout planned to follow.

Pairing

Stereo line-level RCA inputs let the sub take a feed from a preamplifier, an integrated amplifier with pre-outs or the subwoofer pre-out of a surround receiver. Matching colours tie it visually to the Equinox Evara bookshelf speakers, which make a natural partner in rooms of about 20 m2.

Alternatives

The Krix Seismix 3D Mk2 is a larger down-firing subwoofer from the brand, built around a 275 mm long-throw driver with a 50 mm voice coil and a class D amplifier.