Cyclonix Active

Cyclonix Active

  • Incredibly efficient for maximum output
  • 18″ driver with extra-long excursion
  • Exclusive Krix digital sub amplifier (KDSA)

Experience bass like never before. With an internal amplifier to drive the high excursion woofer, you can plug in, sit back and enjoy the bass experience.

Cinema Black

Available finish

“The thought of confining such beasts in even a large home theatre is almost alarming”

– Audio Esoterica Magazine

“The thought of confining such beasts in even a large home theatre is almost alarming”

– Audio Esoterica Magazine


The Cylonix Active is the ultimate subwoofer for recreating the lowest possible audible frequencies in your dedicated home cinema.


With a built-in ICEpower® class D amplifier, the Cylonix Active uses a high excursion bass driver mounted in a high quality MDF enclosure featuring the proprietary Krix ‘X’ brace system to eliminate panel resonances.


The giant 455mm bass driver features a 100mm voice coil, powerful vented magnetic circuit and double spider assembly. The optimum cooling system provides fast heat exchange and reduced thermal power compression. The built-in ICEpower® class D amplifier also delivers 450 watts RMS.


The dual front-vented enclosure is tuned to achieve maximum output, resulting in an incredibly efficient subwoofer for high drive level applications, while the front mounted control panel with LED display allows for easy adjustment and use. The unit also includes proprietary Krix rubber feet for improved acoustic isolation on hard and soft floor surfaces.


For the ultimate cinema experience at home, play it through Krix.


Frequency Range
20Hz-250Hz in room response

Amplifier Power
450 Watts RMS, 900 Watts maximum instantaneous power

127dB maximum SPL in room response

Stereo line level RCA. High level binding posts

Enclosure Type
Bass reflex, front firing vents

1200mm high x 670mm wide x 405mm deep

Low Frequency Driver
Single 455mm (18”) paper cone driver. 100mm (4”) edge-wound copper voice coil, dual spider assembly and vented magnet assembly

Power On/Off
Adjustable Auto/Always On, 12V trigger setting

Phase Select
0º or 180º

Low Pass Filter

50Hz-200Hz or bypass


63kg each

“The impression of sheer air power emerging from the Krix SX system was breathtaking…”

– Jez Ford [Sound+Image Magazine]

Best Buys Audio & AV Magazine


For a real ‘cinema sound’ at home, it makes sense to use similar technology to the real thing, to get the experience as close as possible. But why compromise on ‘close’? The Krix Series SX range is the real thing, scaled down to fit within the constraints of the home. It proved monumental in its ability to deliver soundtracks at full throttle, yet delicate and sophisticated enough to play music at the heights of realism. Simply superb.

Sound+ Image Awards 2016 – Custom Installation Product of the Year


Series SX are a home cinema fan’s dream. Built for multiple installation applications, these highly sensitive speakers can fill your dedicated room with spine-tingling, gut-wrenching cinema sound. Sound+Image Magazine agreed, and awarded the range the Custom Installation Product of the Year.