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Commercial Krix Cyclonix 18 Active Subwoofer (Active / Powered) Krix Cyclonix 18 inch Active subwoofer Frequency Range: 20Hz - 250Hz (-10dB) Amplifier Power: 450 Watts RMS Output: 127dB maximum SPL in room response Bass Driver(s): Single 455mm (18”) paper cone driver. 100mm (4”) edgewound aluminium voice coil, dual spider assembly and vented magnet assembly Power On/Off: Adjustable ‘Auto Sensitivity’ and 12V trigger setting Phase Select: 0 or 180 degree Low Pass Filter: 50-200Hz or bypass Inputs: Stereo line level RCA, high level binding posts Enclosure Type: Bass reflex, front vented, heavi
At A$2,250, this sits well above the typical used market for comparable listings: versus a median of A$811 and a 75th percentile of A$2,045, the ask is a touch ambitious rather than a bargain. It’s not wildly out of line if this one is unusually clean or fully sorted, but you’d want some proof that the price is justified.
The upside is that this is the sort of active sub that can make a serious system feel properly full-range, with real punch, control, and the convenience of built-in amplification. For a heavier-duty Krix piece, original condition, driver health, amp reliability, and any included remote or leads matter more than cosmetics. If it’s genuinely well kept and ready to go, it could still be a good buy for the right setup.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Krix Loudspeakers was founded in 1974 by Scott Krix in Adelaide, Australia, following his degree in electronic engineering. Beginning in a garage with basic hand tools, the company evolved from crafting bespoke speakers for friends into a globally recognized manufacturer. By 1976, Scott opened The Acoustic Foundry, a hi-fi retail concept that pioneered the "Design Your Own Systems" approach, allowing customers to audition and customize speaker elements. The Home Grown series launched in 1978, establishing Krix's first commercial product line across multiple price points and sizes. Today, the company remains family-owned and operated, with Scott and his brothers Gary and Ashley still active in the business after five decades.
Krix specializes exclusively in loudspeakers across three primary categories: commercial cinema speakers, home cinema systems, and high-end domestic audio speakers. The brand gained prominence in the 1980s by pioneering infinite baffle wall technology and constant directivity horn designs for multiplex cinemas, a market segment they dominated for two decades. Their commercial cinema speakers now grace over 4,500 installations across 40 countries. In 2010, Krix formalized its home cinema range, and by 2018 became the exclusive Trinnov Audio Commercial Cinema distributor for multiple regions.
Krix occupies the premium to ultra-premium tier of the audio market, positioned as a high-end specialist rather than a mass-market manufacturer. The brand commands respect among both professional installers and discerning audiophiles willing to invest significantly in sound quality. Their reputation rests on decades of engineering innovation, proprietary horn technology, and unwavering commitment to Australian manufacturing. Krix appeals to buyers seeking cinema-grade acoustics for domestic environments and those pursuing uncompromising audio performance, making them a niche but prestigious choice within the global hi-fi landscape.
See all Krix listings on RADAR.
