Best Passive Soundbar

Best Passive Soundbar

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Passive Soundbar has emerged as an indispensable accessory for home entertainment systems. Among the myriad options available, passive soundbars have gained significant popularity for their simplicity, affordability, and impressive audio performance. In this comprehensive review, we will delve into passive soundbars, exploring the top contenders in the market, their unique features, and the pros and cons that make them stand out.

Top Passive Soundbar Comparison

Product Name

Special Feature




MartinLogan Motion SLM X3 Ultra-Slim 3-Channel Passive Soundbar

L-C-R soundbar, Slim design, Binding Posts: Push style

wired, wireless


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Klipsch RP-440D-SB Black Passive Surround

90 x 90 Tractrix Horn, Wrap-Around Magnetic Grille



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Polk Audio ES35 Slim Center Channel Passive Soundbar

Dolby Enabled



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Sony HTX8500 2.1ch Dolby Atmos/DTS:X Passive Soundbar

Subwoofer, Dolby Enabled

wired, wireless


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Phasetech Versatile 2.1CH Passive Soundbar

Bass Boost



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Best Passive Soundbar TV Reviews

This massive review will explore the best passive Soundbar. Each Soundbar on this list has been carefully selected, from sleek designs to powerful audio capabilities to cater to diverse preferences. Explore the world of audio excellence and discover the perfect passive Soundbar to enhance your enjoyment.

1. MartinLogan Motion SLM X3 Passive Soundbar 

Best Passive Soundbar

The MartinLogan Motion SLM X3 Ultra-Slim 3-Channel Passive Soundbar in black redefines audio excellence with its L-C-R soundbar configuration and slim design. The push-style binding posts simplify installation while ensuring a secure connection. This Soundbar delivers a balanced, detailed audio performance with three 1″ x 1.4″ Folded Motion Transducers for high frequencies and six 4″ paper cone low-frequency drivers in a sealed cabinet.

The components include custom air core coil inductors and high-quality capacitors, ensuring precise sound reproduction with system protection against thermal/current issues. With a frequency response of 120–23,000 Hz ± 3 dB, the Motion SLM X3 covers a wide range, capturing every nuance of your audio content. Whether for home theatre setups or audiophile enthusiasts, this Soundbar stands out for its engineering prowess, premium components, and ultra-slim form factor, putting it at the top of the list for people looking for unwavering audio quality.


  • Push-Style Binding Posts
  • Push-Style Binding Posts
  • Paper Cone Low-Frequency Drivers
  • Thermal/Current Protection
  • Wide Frequency Response


  • The price is exorbitant
  • Complex Setup for Some Users

2. Klipsch RP-440D-SB Black Surround

Best Passive Soundbar

The Klipsch RP-440D-SB Black Passive Surround Home Speaker is a sophisticated on-wall audio solution meticulously designed to complement the aesthetics of contemporary ultra-flat TVs. With a striking matte black finish, this speaker seamlessly integrates into modern interiors, offering a discreet yet stylish presence. The Reference Premiere Horn-loaded acoustic technology ensures an immersive and high-fidelity sound experience, delivering crystal-clear audio across the frequency spectrum.

The speaker reproduces detailed and precise high frequencies by boasting a 1″ titanium dome Linear Travel Suspension (LTS) tweeter. Its slim profile allows for versatile horizontal or vertical mounting, catering to various room configurations. Whether enhancing your home theatre setup or contributing to a refined audio environment, the Klipsch RP-440D-SB combines cutting-edge technology with a sleek design for an impressive, immersive listening experience that elevates your entertainment space.


  • Klipsch RP-440D-SB makes it a visually
  • Reference Premiere Horn Technology
  • Versatile Mounting Options
  • Linear Travel Suspension Tweeter
  • Compatibility with Ultra-Flat TVs


  • Passive Configuration
  • Limited Low-Frequency Output

3. Polk Audio ES35 Slim Passive Soundbar

Best Passive Soundbar

The Polk Audio Signature Elite ES35 Slim Center Channel Passive Soundbar is a testament to audio excellence, offering an immersive and high-fidelity sound experience. Hi-Res Audio Certified, it ensures exceptional clarity and detail in audio reproduction. This Soundbar enhances your home theatre setup by producing a stunning three-dimensional audio environment and supporting DTS:X and Dolby Atmos.

Combining a 1″ tweeter and six 3″ woofers delivers a well-balanced audio profile, precisely capturing both the crisp highs and deep lows. Including Dual Power Port technology enhances bass response, providing a rich and impactful low-frequency performance. The slim profile and stunning black finish contribute to its aesthetic appeal and make it a versatile and stylish addition to any entertainment space. For audio enthusiasts seeking a sophisticated and powerful passive soundbar, the Polk Audio Signature Elite ES35 is an excellent choice.


  • Hi-Res Audio Certification
  • Dolby Atmos & DTS:X Compatibility
  • 1″ Tweeter & (6) 3″ Woofers
  • Dual Power Port Technology
  • Stunning Black Finish


  • Passive Configuration
  • Dependence on Source Quality

4. Sony HTX8500 2.1ch Dolby Atmos/DTS:X Soundbar

The Sony HTX8500 2.1ch Dolby Atmos/DTS:X Passive Soundbar with Built-in Subwoofer offers an immersive audio experience with advanced features. The 7.1.2ch Dolby Atmos/DTS X with Vertical Sound Engine creates a three-dimensional audio environment. At the same time, the dual built-in subwoofers deliver deep bass for a rich and impactful low-frequency performance. Audio upscaled close to 7.1.2ch provides a virtual surround sound experience. The Soundbar offers versatility with seven different sound modes, allowing you to tailor your audio to various entertainment scenarios.

Voice enhancement technology ensures clear dialogue for an improved overall audio experience. The slim, low-profile design seamlessly complements your TV setup, and the 4K HDR passthrough provides high-quality visuals. In summary, the Sony HTX8500 combines advanced audio technologies, a sleek design, and versatile features to elevate home entertainment.


  • Dolby Atmos/DTS:X Support
  • Built-in Subwoofers
  • Seven different sound modes
  • Slim, Low-Profile Design
  • 4K HDR Passthrough


  • Limited Channel Configuration
  • Dependency on Source Quality

5. Phasetech Soundbar Versatile 2.1CH

The Phasetech Soundbar with Subwoofer is a versatile 2.1CH audio system that enhances your home entertainment experience. The dedicated 6.06″ wired subwoofer delivers deep and powerful bass, creating an immersive environment for movies, music, and gaming. This passive surround sound system is compatible with various audio sources, offering Bluetooth, HDMI ARC, optical, AUX, USB, and RCA inputs, ensuring flexibility in connectivity for TVs, PCs, and gaming consoles.

The Soundbar’s deep bass enriches your home theatre setup, transforming ordinary movie nights into cinematic experiences. The array of connectivity options caters to different devices, providing a seamless integration into your entertainment ecosystem. Whether mounted on the wall or placed on a shelf, the Phasetech Soundbar is easy to install. The included remote and intuitive controls make it effortless to fine-tune settings, ensuring a personalized and powerful audio experience for your TV, PC, or gaming sessions.


  • Dedicated Wired Subwoofer
  • Versatile Connectivity
  • Passive Surround Sound System
  • Immersive Home Theater Experience
  • Intuitive Controls and Remote


  • Passive System Dependency


In the ever-evolving landscape of audio technology, passive soundbars continue to carve a niche for themselves, offering a balance of simplicity and performance. Each of the mentioned soundbars—MartinLogan Motion SLM X3, Klipsch RP-440D, Polk Audio ES35, Phasetech PH-17, and Sony HTX8500—brings its unique strengths to the table, catering to different preferences and budgets.

As consumers navigate the market for the ideal passive Soundbar, considerations such as audio quality, design, connectivity, and budget play crucial roles. Ultimately, the best passive Soundbar is the one that aligns with individual preferences, seamlessly integrating into the existing home entertainment setup while delivering a captivating audio experience.


What is a passive soundbar?

A passive soundbar is a speaker system without built-in amplification. It requires an external amplifier or AV receiver to provide power. Unlike active (powered) soundbars with built-in amplifiers, passive soundbars rely on external sources for amplification.

How does a passive soundbar differ from an active one?

The primary difference is that a passive soundbar lacks its built-in amplifier. It must be connected to an external amplifier or AV receiver to function. On the other hand, active soundbars don’t require an additional amplifier because they come with an integrated amplifier.

What are the advantages of a passive soundbar?

Passive soundbars offer flexibility in choosing amplifiers, allowing users to tailor the audio setup to their preferences. Audio enthusiasts frequently favor high-end amplifiers and components. Additionally, passive soundbars may be easier to repair or upgrade individual components.

How do I connect a passive soundbar to my audio system?

To connect a passive soundbar, you need to use a speaker wire to link the Soundbar to an external amplifier or AV receiver. The amplifier or receiver then connects to your audio source (TV, audio player, etc.). Follow the manufacturer’s instructions for proper wiring and impedance matching.

Can I use a passive soundbar with an amplifier or AV receiver?

While passive soundbars can work with various amplifiers and receivers, it’s essential to check compatibility. Match the impedance ratings and ensure the amplifier or receiver has enough power to drive the passive Soundbar effectively. Checking both devices’ recommended power range and impedance is crucial for optimal performance.

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