EOFY Sale NOW ON!! Seen it cheaper elsewhere? | Give us a crack at it! | Contact Us or call 1800 69 2225 during business hours

The Selby Everyday Price Promise. Shop Now With Confidence!

Krix Harmonix 5.1 + Yamaha RX-A4A


In stock

As low as $8,599

RRP $9,729

Good Things Take Time

These Krix speakers are made-to-order in South Australia, with construction of your new speakers beginning once your order has been placed.

A premium product like this deserves the personal touch, so we would love to speak with you to ensure everything is perfect from start to finish.


• Australian-made speakers

• Premium sound quality

• Choice of finishes

• Premium Yamaha AVENTAGE Receiver

Customise Krix Harmonix 5.1 + Yamaha RX-A4A
1 Yamaha AVENTAGE RX-A4A 7.2 Channel AV Receiver   + $0

* Required Fields

Your Customisation
Krix Harmonix 5.1 + Yamaha RX-A4A
Krix Harmonix 5.1 + Yamaha RX-A4A

In stock

Per our dealer agreement this product is unavailable for sale online. Please call 1800 69 2225 to order.



    Krix Harmonix 5.1 Pack + Yamaha AVENTAGE RX-A4A Receiver

    This 5.1 amp and speaker system features Australian Made speakers from award-winning loudspeaker manufacturer, Krix and Yamaha's premium AVENTAGE RX-A4A AV receiver. This system features the fantastically musical and dynamic Harmonix 3-way floorstanding speakers. A perfect match to the Harmonix is the 3-way Vortex centre speaker, with both speakers featuring a similar driver setup. Completing the surround package are the powerful yet compact Equinox bookshelf speakers and the Seismix 3 subwoofer with 11" woofer. Available in your choice of 5 finish options including traditional Black Woodgrain vinyl, or a more premium Real Timber veneer in either Atlantic Jarrah or Blackwood.


    What's Included:

    Yamaha AVENTAGE RX-A4A 7.2 Channel Receiver
    - Krix Harmonix Mk2 Front Floorstanding speakers
    - Krix Vortex Mk2 Centre speaker
    - Krix Equinox Mk5 Surround bookshelf speakers
    - Krix Seismix 3 Subwoofer


    Krix Harmonix Mk2 Floorstanding Speakers

    The Harmonix floorstanding speakers are equally brilliant at making movies sound amazing, but are also ideal for music listening.

    These 3-way speakers feature two hefty 165mm (6.5") bass drivers in an extended bass shelf alignment, providing deep, tight bass. A dynamic non-fatiguing vocal mid-band is delivered by a 130mm (5") midrange driver, and lucid, detailed highs come from the 25mm (1") super audio tweeter with an extended frequency response up to 40kHz.

    Producing a truly natural, all-encompassing sound, the Harmonix Mk2 features front facing ports which allow the speaker to be pushed up against a wall without compromising sound quality. They are also timbre matched with all Krix speakers for surround sound fidelity and come in a range of elegant cabinet finishes for definitive style and flexibility.

    Key Features:
    - 2 x 6.5" Bass/Mid Drivers with 1¼" voice coil
    - 5" Mid range Driver
    - 1" dual concentric diaphragm with wave-guide tweeter
    - Power Handling: 50 - 250 Watts RMS
    - Nominal 6 ohm impedance
    - 35Hz > 40kHz Frequency response
    - Dual chambers - sealed midrange chamber with bass reflex main chamber
    - Front vented with internal and external flaring
    - Dual gold plated bi-wire binding posts
    - 28kg each

    Krix Vortex Mk2 Centre Speaker

    The Vortex Mk2 delivers vocal clarity, midrange depth and a dynamic bass response. The vertical arrangement of the tweeter and midrange drivers eliminates phasing problems if seated off-axis, ensuring even sound distribution so that every seat in the room is a good one.

    Big, dual 165mm (6.5") bass drivers come with heavy-duty voice coils, wound on high-powered aluminium formers, while the 130mm midrange driver has an oversized magnet for lower distortion. The 26mm high frequency driver, with its wave-guide plug, also ensures controlled directivity.

    Key Features:
    - 2 x 6.5" Bass Drivers with 1¼" voice coil
    - 5" Mid range Driver
    - 1" dual concentric diaphragm with wave-guide tweeter
    - Power Handling: 50 - 250 Watts RMS
    - Nominal 6 ohm impedance
    - 35Hz > 40kHz Frequency response
    - Dual gold plated bi-wire binding posts
    - 24kg


    Krix Equinox Mk5 Bookshelf Speakers

    For a big sound from a small speaker, the Equinox Mk5 will astonish and surprise. With finesse and power punching well above its weight, it can be tucked-away while still filling the room with sound.

    The mid-range and bass come from a high grade 130mm driver with a doped curvilinear paper cone, over-sized voice coil, and powerful magnet, while extended frequency response is delivered through a 26mm ring radiator tweeter. Combined with its bass reflex design, the result is an efficient but balanced bass sound with a revealing, detailed high end, performing well beyond the relatively small cabinet size of the speaker.

    Key Features:
    - 5" doped curvilinear paper cone woofer
    - 1" dual concentric diaphragm with wave-guide tweeter
    - Power Handling: Maximum 120W RMS
    - Nominal 6 ohm impedance (minimum 3.6 Ohms)
    - 45Hz > 40kHz Frequency response
    - Rear vented enclosure with internal bracing

    Krix Seismix 3 Mk7 Subwoofer

    For a deep bass experience that will move the earth without costing the earth, the Seismix 3 Mk7 subwoofer is sure to rock your world. You won’t have to sacrifice musicality for low frequency output with this tuneful speaker that will allow you to truly feel the rumble of bass with supreme clarity.

    A front-firing, vented subwoofer, the Seismix 3 Mk7 features a Krix designed 275mm (11") long throw bass driver, developed specifically for high-level low frequency reinforcement. Enhanced geometry within the magnet structure increases linear cone travel by a whopping 30 percent and allows superior driver control, while the built-in high performance class D amplifier delivers increased sound efficiency with lower power consumption.

    Key Features:
    - 1 x 11" bass driver, 2" voice coil
    - Power Handling: 300W RMS
    - Frequency Range: 22Hz-200Hz in-room response
    - Output: 122dB maximum SPL in-room response
    - Enclosure Type: Bass reflex, front firing, front ported
    - Low Pass Filter: 50Hz-200Hz or bypass
    - Phase Select: 0º to 180º continuously variable (relative to input signal)
    - Inputs: Stereo line-level RCA


    Yamaha AVENTAGE RX-A4A 7.2 Channel Receiver

    The RX-A4A delivers realistic sound and video that transports you out of your home and into your favourite entertainment. Whether you’re watching, listening, or gaming, you’ll feel completely immersed.

    The Benchmark for AV Receivers

    AVENTAGE AV receivers are the reference standard to which all others are compared. Passionate engineering and meticulous attention to detail produces the Yamaha hallmark of True Sound. You can feel the quality in the design and fabrication – from every electrical path, component and piece of material. Each element was scrutinized with intense detail to produce the finest, first-class performance. The AVENTAGE AV receiver is a work of visual and acoustic art.

    Key Features:
    - 7.2 Channel powerful surround sound with Zone2
    - 110W power output per channel
    - High slew rate amplifier for responsive, explosive sound
    - SURROUND:AI automatically optimises the surround effect in real-time
    - Wi-Fi, Bluetooth, Airplay 2, streaming services and MusicCast multi-room audio built-in
    - Dolby Atmos and DTS:X with CINEMA DSP HD3
    - HDMI 7 in/3 out, 8K/60Hz, 4K/120Hz, HDR10+ via firmware update
    - ESS SABRE ES9007S Premier Audio DAC for high-performance conversion
    - Voice control with Alexa and Google Assistant devices
    - MusicCast Surround capable
    - YPAO™-R.S.C. with multi-point measurement, precision EQ and low-frequency mode
    - Phono input for turntables


    About Krix

    The Krix team manufacture high-quality loudspeakers for home and commercial use. With some 2000 commercial cinema installations globally, you have possibly already experienced Krix sound. Distributed throughout the world, Krix is at the leading edge of loudspeaker design. Utilising the latest test equipment, 3D modelling and computer simulated design technology, Krix's innovative research and development team is a pioneering force in the Australian loudspeaker industry.

    Home Cinema

    Experience cinema sound. Krix speakers were chosen as the audio solution for over half of all commercial cinemas across Australia. The same Krix expertise has been used to develop a speaker range specifically tailored for your home cinema system.


    High fidelity sound reproduction. The quest for audio perfection is a Krix tradition. This stems from a passion for music. To appreciate music there is no substitute for an immaculately engineered Krix system.


    To be heard not seen. Discreet audio solutions are becoming increasingly popular. Krix's development team has designed a range of high-performance speakers that blend into your home décor. If you're after a built-in, multi-room, outdoor or concealed solution for your home audio, look no further.


    Save 20% on matching cables!

    You'll need some quality cables to get the most from this satellite system. Why not grab a roll of great value 12AWG speaker cable and a high-quality subwoofer cable at the same time, and save even more!

    Simply select the lengths you need and rack up the savings!

    These cables feature Oxygen-Free Copper (OFC) conductors which accurately transmit the signal to your speakers for accurate audio reproduction.

    To prevent unwanted hum in your subwoofer, this subwoofer cable features mylar-coated aluminium shielding eliminates EMI and RFI interference. 

    More Information
    Model Number Harmonix Vortex Equinox Seismix3 RX-A4A
    RRP 9,729.00


    Harmonix Mk2

    Frequency Range 30Hz - 20kHz in room response
    Power Handling Maximum 180 watts RMS amplifier power
    Sensitivity 90dB for 2.83 volts at 1 metre
    Configuration 4 driver 3-way bi-wirable / bi-ampable
    Bass Drivers 2 x nominal 165mm (6.5") laminated polypropylene cones. 
    Bass Drivers Voice Coil: 33mm (11/4”) wound on high powered aluminium former, with ventilated spider and aluminium flux stabilization ring for low distortion.
    Midrange Driver 1 x nominal 130mm (5”) coated paper cone. 
    Midrange Driver Voice Coil: 26mm (1”) voice coil wound on high powered aluminium former, using copper shorting ring and oversized magnet for lower distortion
    Tweeter 28mm (1”) doped fabric dome. Ferro fluid cooled. Double magnet shielded
    Crossover Point 340Hz & 2.2kHz
    Impedance Nominally 4 ohms
    Enclosure Type Dual chambers - sealed midrange chamber, with bass reflex main chamber, front vented with internal / external flaring
    Dimensions 1060mm high x 220mm wide x 355mm deep
    Material 17mm MDF enclosure, heavily braced
    Volume 44 litres internal
    Weight 28kg each

    Vortex Mk2

    Frequency Range: 35Hz - 20kHz in room response
    Power Handling: Maximum 180 watts RMS amplifier power
    Sensitivity: 91dB for 2.83 volts at 1 metre
    Configuration: 4 driver 3-way bi-wirable / bi-ampable
    Bass Drivers: 2 x nominal 165mm (6.5") laminated polypropylene cones. 
    -Voice Coil: 33mm (11/4”) wound on high powered aluminium former, with ventilated spider and aluminium flux stabilization ring for low distortion
    Midrange Driver: 1 x nominal 130mm (5”) coated paper cone. 
    -Voice Coil: 26mm (1”) wound on high powered aluminium former, using copper shorting ring and oversized magnet for lower distortion
    Tweeter: 28mm (1”) fabric dome. Ferro fluid cooled. Neodymium magnet
    Crossover Point: 340Hz & 2.1kHz
    Impedance: Nominally 4 ohms
    Enclosure Type: Dual bass chambers, bass reflex & sealed midrange chamber, front vented with internal / external flaring
    Dimensions: 230mm high x 725mm wide x 383mm deep (including grille)
    Material: 17mm MDF enclosure, heavily braced
    Volume: 42 litres internal
    Weight: 24kg

    Equinox Mk3

    Frequency Range: 45Hz - 40kHz in room response 
    Power Handling: Maximum 120 watts RMS amplifier power 
    Sensitivity: 88dB for 2.83 volts at 1 metre 
    Configuration: 5 inch 2-way
    Bass Driver: Cast aluminium basket with a nominal 130mm (5”) doped curvilinear paper cone. 
    Voice coil: 25mm (1") wound on high powered aluminium former, with copper shorting ring. Vented and double magnet shielded 
    Tweeter: 26mm (1") dual concentric diaphragm with wave-guide centre plug for controlled directivity. Non-reflective dual chambered magnet structure with copper shorting ring to lower distortion.
    Impedance: Nominally 6 ohms
    Enclosure Type: Bass reflex, rear vented
    Dimensions: 295mm high x 175mm wide x 235mm deep 
    Weight: 6kg each

    Seismix 3 Mk7

    Frequency Range: 22Hz - 200Hz in room response
    Amplifier Power: 300 watts RMS
    Low Frequency Driver: Nominal 275mm (11") diameter doped paper cone driver, 50mm (2") voice coil wound on high powered Kapton former, with vented magnet assembly
    Output: 122dB maximum SPL in room response
    Inputs: Stereo line level RCA
    Enclosure Type: Bass reflex, front vented
    Power On/Off: Signal sensing, 15 minute delay before switching to standby after no input signal
    Phase Select: 0º to 180º continuously variable (relative to input signal)
    Low Pass Filter: 50Hz-200Hz or bypass
    Dimensions: 450mm high x 360mm wide x 410mm deep
    Weight: 18kg each

    Yamaha AVENTAGE RX-A4A 7.2 Channel Receiver

    Amplifier Section
    Channel: 7.2
    Rated Output Power (1kHz, 1ch driven): 135 W (8 ohms, 0.9% THD)
    Rated Output Power (20Hz-20kHz, 2ch driven): 110 W (8 ohms, 0.06% THD)
    Maximum Effective Output Power (1kHz, 1ch driven): 165 W (8 ohms, 10% THD)
    High Slew Rate: Yes

    Surround Sound Processing
    Surround:AI: Yes
    CINEMA DSP: Yes (HD3)
    DSP Programs: 24
    Dialogue Level Adjustment: Yes
    Virtual Presence Speaker: Yes
    Virtual Surround Back Speaker: Yes
    Dialogue Lift: Yes
    Dolby Atmos: Yes
    Dolby Atmos Height Virtualizer: Yes
    Dolby TrueHD: Yes
    Dolby Digital Plus: Yes
    Dolby Surround: Yes
    DTS:X: Yes
    DTS-HD Master Audio: Yes

    Audio Features
    File Format: MP3 / WMA / MPEG-4 AAC, ALAC: up to 96 kHz / 24-bit, FLAC: up to 384 kHz / 24-bit, WAV / AIFF: up to 384 kHz / 32-bit, DSD: up to 11.2 MHz
    Pure Direct: Yes
    Compressed Music Enhancer: Yes
    High-resolution Music Enhancer: Yes
    YPAO multi-point measurement: Yes with R.S.C. (Reflected Sound Control) , 3D, 64-bit High Precision EQ Calculation
    YPAO Volume: Yes
    Adaptive DRC (Dynamic Range Control): Yes
    Initial Volume & Maximum Volume Setting: Yes
    A.R.T. Wedge: Yes
    Bi-amp capability: Yes
    Audio Delay: Yes (0-500 ms)
    DA Converter: 384 kHz / 32-bit ESS Hyperstream DAC ES9007S

    Video Features
    HDMI eARC: Yes
    HDMI Audio Return Channel: Yes
    HDMI Pass-through: 8K60AB, 4K120AB (via future update)
    HDMI Up-scaling: Yes, up to 8K (via firmware update)
    Dolby Vision: Yes
    HDR 10+: Yes (via firmware update)
    VRR/ALLM/QMS/QFT: Yes (via firmware update)

    MusicCast Surround: Yes
    HDMI Input/Output: 7 / 3 (HDMI2.1 / HDCP2.3)
    HDMI CEC: Yes
    USB Input: Yes
    Network Port: Yes
    Wi-Fi: Yes (2.4 / 5 GHz)
    AirPlay 2: Yes
    Bluetooth: Yes (SBC / AAC)
    Front AV Input: USB
    Digital Audio Input/Output: Optical: 3 / 0
    Digital Audio Input/Output: Coaxial: 2 / 0
    Analog Audio Input/Output: 6 / 0
    Phono Input: Yes
    Preout: 7.2-ch
    Headphone Output: 1

    FM/AM Tuner: Yes (Availability varies by region.)
    DAB Tuner: Yes (Availability varies by region.)

    User Interface
    On-screen display: Graphical User Interface
    SCENE: SCENE PLUS (8 sets)
    App Control: Yes (iPhone / iPad / Android phone / tablet)
    Web Browser Control: Yes
    Remote Control Unit: Yes

    Zone Control
    Zone 2 Audio Output: Preout / HDMI
    Powered Zone: Zone 2
    Zone Video Output: HDMI
    +12V Trigger Output: 2
    Remote (IR) Input/Output: 1 / 1
    Party Mode: Yes

    Standby Power Consumption (IR only): <0.4 W
    Auto Power Standby: Yes
    ECO mode: Yes
    Dimensions (W x H x D): 435 x 191 x 442 mm (with antenna up: 435 x 270 x 442 mm)
    Weight: 16.2 kg

    Write Your Own Review
    You're reviewing:Krix Harmonix 5.1 + Yamaha RX-A4A
    Your Rating

    5 Year Warranty
    All Krix speakers are Australian designed and Australian made.
    Krix are so confident in the quality of their products that they provide a 5 Year Warranty with all new Krix speakers.
    To claim your warranty, please register your product with Krix within 90 days of the purchase date.

    Register with Krix

    4 Year Warranty
    Purchase with confidence. Yamaha AVENTAGE receivers include a 4 Year Warranty from Yamaha Australia, for your peace of mind.

    Visit the Yamaha Australia website for full warranty details.

    Find your nearest Yamaha authorised service centre.

    If you experience any issues with this product please don't hesitate to contact us.
    How much does delivery cost?
    We offer free post on all orders over $29 to anywhere within the Australian mainland and Tasmania.

    Can I pick up my purchase from your store?
    Yes. You can usually pick up your order from one of our stores. We recommend that you contact us first to ensure your order is ready for collection.

    What happens if I'm not happy with my product when it arrives?
    All change of mind returns must be in as new condition, in original packaging. We provide a generous 30-day change-of-mind guarantee on our products (unless otherwise stated). All change of mind returns must be in as new condition, in original packaging.

    Please visit our FAQ page for answers to other frequently asked questions or contact us if you have any other questions or comments.