Klipsch Flexus Core 300 Dolby Atmos Soundbar at Vinyl Sound Toronto Canada

The Flexus Core 300 is a 5.1.2-channel Dolby Atmos soundbar from Klipsch (Hope, Arkansas, USA) powered by Onkyo (Osaka, Japan), available at Vinyl Sound in Toronto, Canada. The world's first soundbar with built-in Dirac Live auto room correction, the Flexus Core 300 uses 13 drivers including a 0.75" horn-loaded tweeter, four 2.25" up-firing and side-firing Dolby Atmos drivers, and four 4" high-output built-in woofers to deliver 285 watts of total Onkyo-engineered amplification across a 43 Hz to 20 kHz frequency response. Winner of the AVS Forum Top Choice 2025 Award and recognised at CES, the Flexus Core 300 represents the flagship of the Klipsch Flexus Sound System, combining Klipsch's legendary horn-loaded acoustic engineering with Onkyo's precision Japanese amplifier and electronics design, all managed through the Klipsch Connect Plus app.

World's First Soundbar with Dirac Live Room Correction

The Flexus Core 300's most significant technical distinction is its built-in Dirac Live auto room correction, a sophisticated acoustic measurement and equalisation system previously available only in high-end AV receivers and integrated amplifiers. Dirac Live measures how sound behaves in a specific room by accounting for room dimensions, shape, furniture placement, and speaker configuration, then applies precision correction algorithms that address frequency response anomalies, timing errors, and modal imbalances created by the listening environment. To perform a calibration, the listener uses the included microphone and the Klipsch Connect Plus app to take a series of measurements from different positions in the room, after which the Dirac Live algorithm calculates and applies a correction filter tailored to that specific space. The practical result is measurably flatter in-room frequency response, improved stereo and surround imaging, and better dialogue intelligibility regardless of whether the room has hard reflective surfaces, asymmetrical geometry, or acoustically challenging furniture arrangements. For rooms that would ordinarily require professional acoustic treatment panels or custom DSP calibration from an integrator, Dirac Live provides an accessible, app-driven alternative that adapts the soundbar's output to the room rather than requiring the room to be adapted to the soundbar.

13-Driver Array with Horn-Loaded Tweeter and Physical Dolby Atmos Elevation

The Flexus Core 300's 54" enclosure houses 13 drivers in a layout engineered to deliver full 5.1.2-channel Dolby Atmos reproduction as a standalone unit, without requiring a separate subwoofer or rear speakers. The driver complement includes four 2.25" front-firing paper cone drivers for left, center, and right channel coverage, a dedicated 0.75" horn-loaded tweeter providing the vocal clarity and high-frequency efficiency that is the hallmark of Klipsch's acoustic philosophy, two 2.25" up-firing elevation drivers that physically project Dolby Atmos height information toward the ceiling for reflection to the listening position, two 2.25" side-firing drivers that widen the soundstage beyond the physical width of the bar for a more enveloping surround presentation, and four 4" high-output paper cone woofers for built-in bass that eliminates the need for a separate subwoofer in most room sizes. This physical driver topology means Dolby Atmos height effects are produced by actual upward-firing transducers rather than virtual processing, providing more convincing and position-accurate overhead audio from soundtrack content encoded with Dolby Atmos object metadata. Total amplification is 285 watts from the Onkyo-designed internal amplifier, which was subjected to over 1,000 rigorous testing protocols to verify performance and long-term reliability before the Flexus product line launched.

Awards and Critical Recognition

• AVS Forum Top Choice 2025 Award
• CES recognition, 2024
• Featured by Rolling Stone

Key Features

• World's First Soundbar with Dirac Live: Built-in Dirac Live auto room correction uses acoustic measurement algorithms to compensate for the specific acoustic properties of the listener's room, delivering optimised frequency response and imaging in any space without professional acoustic treatment.
• 5.1.2-Channel Dolby Atmos and DTS:X: Full decoding of Dolby Atmos and DTS:X immersive audio formats via HDMI, with physical up-firing elevation drivers for height channel reproduction rather than virtual processing.
• 285 Watts Onkyo Amplification: Onkyo-engineered internal amplifier delivering 285 total watts across all 13 drivers, tested to over 1,000 quality and reliability verification protocols before production.
• 0.75" Horn-Loaded Tweeter: Dedicated center channel horn-loaded tweeter applies Klipsch's high-efficiency, low-distortion horn loading philosophy to the soundbar form factor, providing exceptional dialogue clarity and vocal intelligibility.
• Four 4" Built-In High-Output Woofers: Dual pairs of 4" paper cone woofers deliver bass extension to 43 Hz without requiring a separate subwoofer, while the optional Flexus Sub 200 is available to add dedicated subwoofer performance for larger rooms.
• HDMI 2.1 eARC and 4K/120Hz Passthrough: HDMI 2.1 with eARC for TV connection, plus a second HDMI 2.1 input capable of passing 8K and 4K/120Hz signals for direct connection of a gaming console or source device.
• Wi-Fi Streaming with Apple AirPlay, Google Cast, TIDAL Connect, Spotify Connect, and QPlay: Built-in Wi-Fi enables lossless and high-resolution music streaming from multiple platforms without Bluetooth compression, alongside Ethernet connectivity for wired network connection.
• Klipsch Connect Plus App: Mobile app for iOS and Android manages setup, audio settings, speaker level adjustment, Dirac Live calibration, multi-device management, and firmware updates, with a dedicated alphanumeric LED display on the bar for at-a-glance source and format information.
• Expandable to 7.1.4 or Larger: The optional Flexus Surr 200 wireless rear speakers (each featuring upfiring drivers) expand the system to 7.1.4 when combined with the Core 300's built-in elevation drivers, and up to two Flexus Sub 200 subwoofers can be added wirelessly using Klipsch's proprietary transport technology.
• Control4 and Crestron Compatible: Professional installation compatibility with major home automation and control system platforms for integration into whole-home AV and smart home systems.
• Optical Digital Input and RCA Subwoofer Output: Legacy Toslink optical input for TVs without HDMI ARC, plus a dedicated RCA subwoofer output for wired connection of an external subwoofer.

Technical Specifications

Connections at a Glance

• HDMI 2.1 with eARC for TV connection and 8K/4K 120Hz audio return
• HDMI 2.1 source input for gaming console or Blu-ray player (8K and 4K/120Hz passthrough)
• Toslink optical digital input for TVs without HDMI ARC
• USB-C and USB-A (for Flexus Transport 100 streaming device)
• Ethernet for wired network connection
• Mini-jack input for included Dirac Live calibration microphone
• RCA subwoofer output for wired external subwoofer connection
• Wi-Fi and Bluetooth for wireless streaming and rear speaker/subwoofer pairing

Frequently Asked Questions

What is the Klipsch Flexus Core 300?

The Klipsch Flexus Core 300 is a 5.1.2-channel Dolby Atmos soundbar powered by Onkyo, featuring 13 drivers, 285 watts of total amplification, and built-in Dirac Live auto room correction, making it the world's first soundbar with this technology. It delivers a 43 Hz to 20 kHz frequency response from its 54" enclosure and decodes both Dolby Atmos and DTS:X immersive audio formats via HDMI eARC. It earned the AVS Forum Top Choice 2025 Award and CES recognition, and is expandable with the optional Flexus Sub 200 wireless subwoofer and Flexus Surr 200 wireless rear speakers to a 7.1.4 configuration.

How does the Klipsch Flexus Core 300 compare to the Sonos Arc Ultra?

The Klipsch Flexus Core 300 and the Sonos Arc Ultra are both premium Dolby Atmos soundbars in a similar price range, but differ in several meaningful ways. The Flexus Core 300 is the only soundbar with built-in Dirac Live room correction, a capability the Sonos Arc Ultra does not offer. The Core 300 also includes a second HDMI 2.1 input for direct source connection, which the Arc Ultra omits, and adds DTS:X decoding alongside Dolby Atmos, while the Arc Ultra is Dolby Atmos only. The Core 300's 13-driver array includes side-firing drivers to widen the soundstage and four built-in 4" woofers for bass that extends to 43 Hz without a subwoofer, compared to the Arc Ultra's driver layout, which relies more heavily on virtual surround processing. The Arc Ultra integrates more deeply with the Sonos multiroom ecosystem, which may be an advantage for existing Sonos households, while the Core 300 is the stronger choice for dedicated home theater performance and room-compensated acoustic precision.

What is Dirac Live and how does it work in the Flexus Core 300?

Dirac Live is a room correction system developed by Dirac Research (Uppsala, Sweden) that measures how sound behaves in a specific listening room and applies a precisely calculated correction filter to compensate for the acoustic anomalies that room introduces. In the Flexus Core 300, the Dirac Live calibration is performed using the included microphone and the Klipsch Connect Plus app: the user takes a series of measurements from multiple positions in the room, the algorithm analyses the results, and the soundbar applies the correction automatically. The filter accounts for frequency response peaks and dips caused by room modes and boundary reflections, arrival-time differences between drivers, and the combined effect of furniture and room geometry on the sound field. The practical result is a flatter, more accurate in-room frequency response and improved stereo and surround imaging compared to an uncorrected soundbar, particularly in rooms with hard parallel surfaces, open floor plans, or acoustically challenging dimensions.

Can the Klipsch Flexus Core 300 be used without a subwoofer?

Yes, the Flexus Core 300 is designed to operate effectively without a separate subwoofer. Its four built-in 4" high-output paper cone woofers extend bass response to 43 Hz, which covers the majority of film and music bass content including dialogue fundamentals, most musical instrument ranges, and much of the LFE track in cinema soundtracks. For larger rooms where deeper, more physical bass impact is required for the LFE channel in action films or music with extended sub-bass content, the optional Flexus Sub 200 wireless subwoofer connects without additional cabling using Klipsch's proprietary wireless transport technology. Up to two Flexus Sub 200 units can be added for improved bass distribution and output in the largest listening spaces.

Where can I buy the Klipsch Flexus Core 300 in Toronto or Canada?

The Klipsch Flexus Core 300 is available at Vinyl Sound, an authorised Klipsch dealer located in Toronto, Canada. Vinyl Sound serves customers across the Greater Toronto Area and ships throughout Canada, providing access to the complete Klipsch Flexus Sound System including the Flexus Sub 200 subwoofer and Flexus Surr 200 rear speakers for system expansion. Purchasing from an authorised Canadian dealer ensures full manufacturer warranty coverage.

What TV size pairs best with the Klipsch Flexus Core 300?

The Klipsch Flexus Core 300 is best matched with 65" to 75" televisions. At 54" wide and 3.063" tall, the bar creates a proportionally balanced visual pairing with TVs in this size range, and its slim profile sits under most TVs in this class without blocking the IR sensor or creating a visual imbalance. The 3" height is compact enough to clear the bottom frame of most 65" and 75" panel TVs when positioned on a media cabinet or TV stand, though wall-mounting requires a separately available Klipsch Pro Wall Mount due to the bar's depth of just under 5 inches.

What is the difference between the Klipsch Flexus Core 300, Core 200, and Core 100?

The three Flexus Core soundbars form a stepped product family with the Core 300 as the flagship. The Core 300 is a 5.1.2-channel system with 13 drivers including side-firing speakers, four built-in woofers, Dirac Live room correction, Wi-Fi streaming with TIDAL Connect and Apple AirPlay, a second HDMI input for sources, and DTS:X decoding alongside Dolby Atmos. The Core 200 is a 3.1.2-channel system at a more compact 44" width with two upfiring drivers and two built-in woofers, but omits the side-firing speakers, Dirac Live, Wi-Fi streaming capability, the second HDMI input, and DTS:X support. The Core 100 is the entry-level option, handling Dolby Atmos processing but without physical elevation drivers or the room correction and streaming capabilities of the higher models. All three are controlled via the Klipsch Connect Plus app and are expandable with Flexus surrounds and subwoofers.