Klipsch FLEXUS-100-SOUNDBAR Review: Slim Soundbar with Built-In Dual Subwoofers
The Klipsch FLEXUS-100-SOUNDBAR delivers a powerful 2.1 audio experience with integrated bass and virtual Dolby Atmos from a compact, plug-and-play design, backed by extended warranty coverage.
By Elvis Dicki
Updated October 22, 2026
For those seeking to elevate their TV’s audio without the clutter of a separate subwoofer, the Klipsch FLEXUS-100-SOUNDBAR 2.1 Sound System presents a compelling all-in-one solution. This soundbar combines Klipsch’s acoustic heritage with Onkyo’s electronic engineering in a sleek, 28-inch package that houses dual midbass drivers and, notably, dual 4-inch subwoofers, aiming to deliver full, rich sound and immersive spatial audio with minimal setup. It is positioned for apartment dwellers and casual home theater enthusiasts who want a significant audio upgrade from built-in TV speakers but prefer a streamlined, wire-free aesthetic and the convenience of a single-unit system. In short, the Klipsch FLEXUS-100-SOUNDBAR offers a potent blend of integrated bass performance and virtualized Dolby Atmos in a user-friendly format.
The system’s design philosophy centers on being hassle-free: you plug it in, connect it to your TV via HDMI eARC or optical, and start enjoying enhanced audio. Control and customization are handled through the Klipsch Connect App, allowing for fine-tuning without needing extra remotes. Furthermore, this particular bundle includes an extended protection plan, adding a layer of long-term security to the investment. This review will analyze its specifications, performance features, and owner feedback to determine if this integrated 2.1 soundbar lives up to its promise of big theater sound from a small footprint.
Klipsch Flexus 100 2.1 Soundbar with Dolby Atmos
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Klipsch FLEXUS-100-SOUNDBAR at a Glance
| Specification | Detail |
|---|---|
| Audio Configuration | 2.1 Channel Soundbar |
| Built-in Subwoofers | Dual 4-inch |
| Midbass Drivers | Dual 2.25-inch |
| Immersive Sound Support | Dolby Atmos (Virtualized) |
| Primary Connectivity | HDMI eARC, Optical, Bluetooth 5.3 |
| Control Method | Klipsch Connect App, Physical Buttons |
| Dimensions (WxDxH) | 28″ x 4.96″ x 3.07″ |
| Enclosure Material | Plastic |
| Expansion Compatibility | Yes (Flexus Subwoofers & Surround Speakers) |
| Warranty & Protection | Manufacturer’s Warranty + Extended Amber Protection Plan |
Design and Build
The Klipsch FLEXUS-100-SOUNDBAR adopts a low-profile, tabletop design with dimensions of 28 inches wide, just under 5 inches deep, and only 3 inches tall. This compact form factor is intended to fit neatly in front of most televisions without obstructing the screen, making it a discreet addition to a living room setup. The enclosure is constructed from plastic, which helps keep the unit lightweight and contributes to its modern, minimalist aesthetic in black. The front likely features a grille covering the dual 2.25-inch midbass drivers, while the built-in dual 4-inch subwoofers are integrated into the body of the soundbar itself, eliminating the need for a separate bass module and its associated wiring.
Physically, the design prioritizes a sealed enclosure, which according to the manufacturer’s data, is engineered to provide clear, distortion-free sound by preventing unwanted air movement. The overall build quality, inferred from the brand’s reputation and product positioning, suggests a focus on durability for residential use. The unit is intended for tabletop mounting, and its slim height should allow it to sit comfortably on most media consoles. The absence of a separate subwoofer box is the most significant design departure from traditional 2.1 systems, offering a cleaner look that is particularly appealing for spaces where floor space is at a premium or where a minimalist decor is preferred.
Performance and Features
Audio Performance and Immersive Sound
At the heart of the FLEXUS-100’s performance is its 2.1 channel configuration with integrated bass. The dual 4-inch subwoofers built directly into the soundbar are engineered to deliver what Klipsch describes as “powerful, low-latency bass” and “deep, musical bass” without the footprint of an external unit. This design aims to provide a full, rich soundscape, particularly for movies and music. The system supports Dolby Atmos processing, creating a virtualized, spatial sound experience that aims to simulate height and surround effects from a single bar, offering a more immersive listening experience for content encoded with Dolby Atmos.
The collaboration with Onkyo is highlighted as a key factor, merging Klipsch’s acoustic technology with Onkyo’s electronic expertise. This partnership is intended to optimize sound reproduction, ensuring that both movie dialogue and musical passages are rendered with clarity and presence. The custom-tuned sound profile is designed to make the most of the dual midbass drivers and integrated subwoofers, aiming for a balanced output that can handle the dynamic range of home theater content.
Connectivity and Ports
Connectivity is straightforward and modern, centered on ease of use. The primary and recommended connection for the best audio quality is the HDMI eARC (Enhanced Audio Return Channel) port. This allows for a single-cable connection to compatible TVs, transmitting high-quality audio from the TV’s apps and connected devices directly to the soundbar, and also enabling control via the TV remote. An optical audio input is provided for older televisions lacking HDMI ARC/eARC. For wireless streaming, the soundbar is equipped with Bluetooth 5.3, enabling users to stream music directly from smartphones, tablets, or laptops with low latency and stable connectivity.
Key Features and Software Control
A standout feature is the dedicated Klipsch Connect App, which serves as the main hub for controlling the soundbar’s advanced functions. Through the app, users can adjust the multi-band equalizer to tailor the sound signature to their preference, modify channel level gains, and engage specialized modes like Night Mode (to reduce loud sound effects) and Dialog Boost (to enhance vocal clarity). The app also allows users to switch between sound modes, such as a surround mode to widen the soundstage, and adjust the master volume. This app-based control system means that while basic functions might be accessible via buttons on the unit or a TV remote, the full suite of audio customization requires a smartphone.
Another significant feature is the system’s expandability. Despite being a complete 2.1 system on its own, the FLEXUS-100 is part of the broader Klipsch Flexus ecosystem. It is designed for easy expansion by adding a compatible wireless subwoofer like the FLEXUS-10-SUB for even deeper bass or Flexus surround speakers to create a true multi-channel home theater setup. This future-proofing allows users to start with the soundbar and upgrade their system over time as needs or space changes.
Setup, Support and Ownership
Setup is marketed as “hassle-free”—essentially a plug-and-play process. Users connect the soundbar to power, run a single HDMI cable from the soundbar’s HDMI eARC port to the corresponding port on their TV, and select the correct audio output on the TV. The Bluetooth pairing process for wireless streaming is standard. The inclusion of the Klipsch Connect App is central to the setup for accessing all features, requiring an initial download and connection. The soundbar is intended for residential use only, as specified by the manufacturer.
Support and ownership are bolstered by the bundled protection plan. The product includes the manufacturer’s limited warranty. This particular bundle adds an extended Amber Protection Plan, which provides additional coverage for a total of three years from the date of purchase. According to the provided data, this plan covers mechanical and electrical failures and includes power surge protection, with support from a nationwide network of service providers and 24/7 customer service. This extended coverage offers peace of mind beyond the standard warranty period. For those interested in expanding their audio setup, exploring options like the best surround sound soundbars can provide context on what full systems offer.
What Owners Say
Owner feedback for the Klipsch FLEXUS-100-SOUNDBAR is exceptionally positive, reflected in its perfect rating distribution. Reviewers consistently praise the sound quality, with one noting it sounds “much better” than a previous Bose soundbar they owned, particularly highlighting its performance with music streaming apps. The collaboration with Onkyo is mentioned by an owner as a key reason for the superior music reproduction. Another reviewer emphasizes the product’s “clarity” and “precise sounds,” suggesting the audio delivers detailed and impactful performance. The value proposition, including the extended warranty, is also cited as a satisfying aspect of the purchase. The consensus from the available excerpts indicates high satisfaction with both the audio performance and the overall ownership package. For more insights into user-friendly audio tech, our guide on the best AI smart home devices explores other integrated home solutions.
Pros and Cons
Pros
- Powerful, integrated bass from dual built-in 4-inch subwoofers
- Compact, all-in-one design eliminates separate subwoofer clutter
- Supports virtualized Dolby Atmos for immersive spatial sound
- Simple plug-and-play setup with HDMI eARC and Bluetooth 5.3
- Comprehensive audio control via the Klipsch Connect App
- Easy wireless expansion with compatible Klipsch Flexus components
- Includes an extended protection plan for added ownership security
Cons
- Virtualized Atmos cannot replicate true discrete surround or height channels
- Advanced audio customization requires the smartphone app
- Designed solely for residential environments
- Bass extension is limited by the physical size of the integrated subwoofers compared to larger, separate units
Who Should Buy It (and Who Should Skip It)
The Klipsch FLEXUS-100-SOUNDBAR 2.1 Sound System is an ideal choice for viewers who want a substantial upgrade from their TV’s built-in speakers but prioritize a clean, simple setup without extra wires or a bulky subwoofer box. It’s perfectly suited for apartment living rooms, bedrooms, or smaller spaces where its compact, integrated design is a major benefit. Users who value deep bass for movies and music but have space constraints will appreciate the engineering behind the built-in dual subwoofers. It’s also a great starting point for those who may want to build a system later, thanks to its easy expansion options.
This soundbar may not be the best fit for audiophiles or home theater enthusiasts who demand the absolute highest fidelity, object-based audio from discrete speakers, or earth-shaking bass from a large, dedicated subwoofer. Those seeking a true 5.1.4 or similar Dolby Atmos experience with physical height and surround speakers should look at more comprehensive systems. Similarly, users who prefer immediate physical controls for all functions and do not want to rely on a smartphone app for EQ adjustments might find the control scheme less convenient. For a broader look at audio solutions that prioritize different features, our roundup of the best TV soundbars for voice clarity is a useful resource.
Final Verdict
The Klipsch FLEXUS-100-SOUNDBAR successfully delivers on its core promise: providing powerful, room-filling 2.1 sound from a single, sleek enclosure. The integration of dual subwoofers is its most notable achievement, offering bass performance that far exceeds typical soundbars and rivals many basic 2.1 systems with separate subs, all while maintaining a minimalist footprint. The support for virtualized Dolby Atmos adds a layer of immersion for compatible content, and the hassle-free connectivity via HDMI eARC makes daily use seamless. The Klipsch Connect App, while necessary for deep customization, provides a modern and powerful way to tailor the audio to personal preferences or specific content.
When combined with the positive owner feedback praising its sound quality and musicality, and the value added by the extended protection plan, the FLEXUS-100 emerges as a highly compelling package. It is a thoughtfully designed product that balances performance, convenience, and aesthetics for the modern viewer. While it cannot replace a full discrete speaker system for the most demanding home theater purists, for its target audience—those seeking a significant, all-in-one audio upgrade with great bass and simple expansion options—the Klipsch FLEXUS-100-SOUNDBAR is an excellent choice that justifies its position in the market.
FAQs
Does the Klipsch FLEXUS-100 have a separate subwoofer?
No, the Klipsch FLEXUS-100-SOUNDBAR is an all-in-one 2.1 system. The “2.1” designation refers to its two main audio channels (left and right) plus a dedicated bass channel, which is provided by dual 4-inch subwoofers built directly into the body of the soundbar itself. This eliminates the need for a separate subwoofer box and its associated wiring.
Can I add a subwoofer or surround speakers to this soundbar later?
Yes, the Klipsch FLEXUS-100 is designed to be part of the expandable Flexus ecosystem. You can wirelessly add a compatible Klipsch Flexus subwoofer, such as the FLEXUS-10-SUB, for even deeper bass response. You can also add Flexus surround speakers to create a more immersive multi-channel audio setup, moving beyond the virtualized soundstage of the standalone bar.
How do I control the sound settings and equalizer?
Advanced audio control for the FLEXUS-100 is managed primarily through the Klipsch Connect App, available for smartphones and tablets. The app allows you to adjust the multi-band equalizer, change channel level gains, engage Night Mode, activate Dialog Boost, switch between sound modes like surround mode, and control the volume. Basic functions may also be accessible via buttons on the soundbar itself.
What is included in the Amber Protection Plan bundled with this soundbar?
The bundled Amber Protection Plan extends the total coverage period. According to the manufacturer’s data, this plan provides additional protection on top of the included manufacturer’s warranty, covering mechanical and electrical failures and offering power surge protection. It includes access to a nationwide network of service providers and 24/7 customer support. The plan is intended for residential use only.
About the author
Elvis Dicki writes reviews and buying guides for CyberSecLabs.