MX Series (MX-5 / MX-10 / MX-20 / MX-30 / MX-40)
Krix MX Series Modular Behind-Screen Cinema Speaker System
Australia's premier modular behind-screen cinema speaker system. The MX Series (MX-5 through MX-40) delivers reference-quality sound for dedicated home cinemas. Australian-engineered with patented Constant Directivity horn technology, delivering commercial cinema performance at home.
Overview
The Krix MX Series is the definitive Australian-engineered solution for behind-screen speaker placement in dedicated home cinemas. Engineered and manufactured in South Australia since 1974, the MX Series spans five models — MX-5, MX-10, MX-20, MX-30, and MX-40 — each sized to suit different screen heights and room scales. At the heart of every MX is Krix's patented Constant Directivity (CD) horn technology, which maintains controlled, even dispersion across the listening area without hot-spotting or off-axis colouration. The modular cabinet design allows each unit to be deployed as a discrete LCR speaker behind a perforated projection screen, preserving image integrity while delivering cinematic output levels. The MX-20 and MX-30 are the most common choices for purpose-built home cinemas in the 4–6m screen-width range, while the MX-40i offers extended low-frequency capability with its integrated subwoofer section. All MX speakers are built to withstand the demands of high-output cinema replay over decades of use.
Pros & Cons
Strengths
- Genuine commercial cinema heritage in a residential package
- Consistent, controlled dispersion across the full listening area
- Wide model range makes it easy to match speaker size to room scale
- Exceptional build quality and long service life
- Australian manufacture with strong local support network
Limitations
- Requires purpose-built cinema room with a behind-screen speaker wall
- Passive design requires careful amplifier and crossover pairing
- Physical depth demands adequate behind-screen cavity in room design
Full Specifications
Design
Sizing Guide
Installation
Integrating the Krix MX Series in a Dedicated Home Cinema
At Kolosseum, the Krix MX Series is a core recommendation whenever a client is building a purpose-designed dedicated cinema with a projection screen. The behind-screen placement geometry — with left, centre, and right channels directly behind the image — is the gold standard for cinematic dialogue anchoring and soundstage coherence. We work with the MX-20 through MX-40i depending on room width and output targets.
Room Requirements
MX Series deployment requires a dedicated behind-screen speaker wall with adequate depth for the selected model. Kolosseum room designs account for this cavity in the initial architectural drawings, ensuring the correct speaker model is nominated before construction begins.
Recommended Screen Pairing
All MX models are designed for use behind acoustically transparent perforated projection screens. Screen gain, perforation pattern, and frame depth are all considered alongside speaker selection during the design process.
Acoustic Considerations
Horn-loaded designs like the MX Series project sound with high efficiency and controlled directivity. Room treatment is specified to complement this characteristic — absorbing first reflections while preserving the natural dynamics of the horn output.
Frequently Asked Questions About the Krix MX Series Modular Behind-Screen Cinema Speaker System.
As a general guide: MX-5 suits screens up to ~1.8m wide, MX-10 up to ~2.4m, MX-20 up to ~3.0m, MX-30 up to ~3.8m, and MX-40 for screens 3.8m and above. Kolosseum selects the appropriate model based on room width, seating distance, and output targets during the design phase.
Yes. MX Series speakers are designed for placement behind acoustically transparent perforated screens. The perforation pattern must be sufficient to pass audio without significant high-frequency attenuation. We specify compatible screen materials as part of the full cinema design.
The "i" variants (MX-30i, MX-40i) include an integrated subwoofer section within the cabinet, providing extended low-frequency output from the same unit. Standard variants rely entirely on separate subwoofers for bass reproduction.
The MX Series is a passive speaker system requiring external amplification. For home cinema use, Kolosseum typically pairs MX speakers with high-current multi-channel amplifiers from brands including StormAudio and AudioControl, selected based on the specific MX model and room requirements.
Compare Alternative Speakers.
Megaphonix
Krix flagship horn-loaded on-wall cinema speaker. Available in flat, 45°, and in-wall formats with proprietary Oblate Spheroid waveguide technology.
View Details →Cyclonix Series (11 / 12 / 15 / 18 / Megacyclonix)
Krix Cyclonix dedicated cinema subwoofer family. Available in 11", 12", 15", 18", and flagship Megacyclonix dual-driver configurations. Australian-engineered for musical accuracy and cinema dynamics.
View Details →Phonix / Phonix 45 / Phonix Flat
Krix Phonix on-wall speaker family for screen channels and surrounds. Available in standard, angled 45°, and flat wall-mount variants.
View Details →LX-7 Linear LCR
Krix LX-7 wide-format single-chassis LCR soundbar for behind-screen cinema delivery where discrete speaker placement is constrained.
View Details →Cinematix / Theatrix / Flix / Pix
Krix freestanding cinema speaker family. High-sensitivity horn-loaded designs for flexible LCR and surround placement in dedicated cinema rooms.
View Details →Ready to Design Your Cinema Around the MX Series (MX-5 / MX-10 / MX-20 / MX-30 / MX-40)?
Kolosseum is an independent design consultancy, not a retailer. We design the complete cinema experience and connect you with authorized dealers for purchase and professional installation.
Tell us about your room, your budget, and your vision. We will create a complete cinema design that integrates the Krix MX Series Modular Behind-Screen Cinema Speaker System with the right screen, speakers, acoustics, and seating.