MartinLogan Motion 50XTi vs. Monoprice Monolith THX-365C

MartinLogan Motion 50XTi Center Channel Speaker Monoprice Monolith THX-365C Center Channel Speaker
$1800 $500
Dimensions (H × W × D)
7.60” × 22.80” × 12.80”
193mm × 579mm × 325mm
9.70” × 22.90” × 10.80”
246mm × 582mm × 274mm
Power Type
Passive Passive
Frequency Response
50-25,000 Hz 65-24,000 Hz

Key Takeaways

TLDR Summary: The MartinLogan Motion 50XTi and Monoprice Monolith THX-365C represent two philosophies in center channel design. The 50XTi emphasizes audiophile clarity with MartinLogan's signature Folded Motion tweeter, promising detailed highs alongside robust mids from its larger drivers. In contrast, the THX-365C is a value-focused powerhouse, boasting THX certification and a design catering to home theater enthusiasts seeking cinematic impact. The Monolith aims for precise dialogue reproduction and dynamic range at a competitive price point. Choosing between them hinges on one's preference for nuanced soundstage versus theater-like intensity and budget considerations.

Speaker Comparison

For the discerning home theater enthusiast, the center channel is more than just another speaker—it's the beating heart of the cinematic experience. It's where the crispness of dialogue, the impact of on-screen action, and the subtlety of a film's score coalesce. Today, we'll delve into a comparison between two formidable options: the MartinLogan Motion 50XTi and the Monoprice Monolith THX-365C. Each brings a unique set of attributes to the table, promising to anchor your home cinema with authority and finesse.

Design Aesthetics and Build Quality

Diving into aesthetics, the MartinLogan Motion 50XTi flaunts a sleek, modern design with its distinct perforated grille and the signature Folded Motion tweeter—a visual treat that's synonymous with the brand's identity. The build quality is superb, featuring a reinforced baffle and a cabinet that resonates with the brand's commitment to high-end craftsmanship. In contrast, the Monoprice Monolith THX-365C takes a more understated approach, with a no-frills, utilitarian design that prioritizes function over form. The Monolith is solidly built, with a heft and sturdiness that speaks to its quality, despite its more traditional appearance.

MartinLogan Motion 50XTi Center Channel Speaker
MartinLogan Motion 50XTi arrow (at

Sound Performance and Character

When it comes to sound, the MartinLogan Motion 50XTi exudes a balanced and detailed character. Its Folded Motion tweeter provides an airy and revealing high-end that audiophiles often praise for its precision and lower distortion. The bass and midrange are equally impressive, offering clarity and depth without overshadowing the rest of the audio spectrum. On the other side of the ring, the Monoprice Monolith THX-365C is a powerhouse designed to meet the rigorous THX Ultra certification standards. It presents a sound profile that's bold and dynamic, with a particular focus on delivering clear and intelligible dialogue, ensuring that every word is heard with full impact, even in the most chaotic of scenes.

Center channels are tasked with a heavy load, and the Motion 50XTi handles this with aplomb. MartinLogan has engineered this speaker to integrate seamlessly with the rest of your system, providing a soundstage that is cohesive and expansive. The Monolith THX-365C counters with a soundstage that's equally impressive in width and depth. However, it's the Monolith's ability to project sounds into the room with a tangible presence that makes it stand out, effectively bringing movies to life.

Compatibility and Integration

In the realm of home cinema, compatibility with other components is crucial. The Motion 50XTi is remarkably versatile in this regard; it plays well with a wide range of amplifiers and receivers, thanks to its efficient design. Its timbre is designed to match other speakers in the MartinLogan Motion series, providing an enveloping and unified audio experience. Conversely, the Monolith THX-365C is somewhat more demanding, requiring a robust amplifier to unlock its full potential due to its lower sensitivity. Nevertheless, it is engineered to work hand-in-glove with other speakers in the Monolith THX series, ensuring a balanced and thrilling home theater performance.

Let's not overlook the importance of placement. The MartinLogan Motion 50XTi is forgiving in terms of positioning, maintaining its sound integrity across different setups. This flexibility is a boon for rooms with unconventional layouts or for users who prefer a less rigid speaker placement. The Monoprice Monolith THX-365C is less flexible in this respect, its performance peaks when positioned according to THX specifications, which may require a bit more planning and attention to detail during setup.

Value Proposition

Finally, we approach the ever-important consideration of value. The MartinLogan Motion 50XTi carries a premium price tag, which is justified by its high-end components, audiophile-grade sound, and stunning design. It's an investment for those who crave a visual statement as much as an aural one. The Monoprice Monolith THX-365C, on the other hand, offers exceptional value for its price, delivering a certified THX experience that's rare at its cost. It's a solid choice for the budget-conscious buyer who still demands top-notch performance.

To conclude, the choice between the MartinLogan Motion 50XTi and the Monoprice Monolith THX-365C hinges on a balance between personal preferences and practical considerations. The Motion 50XTi is a feast for both the eyes and ears, a piece of audio jewelry that dazzles with its sonic clarity and aesthetic appeal. The Monolith THX-365C is a workhorse, designed to excel in delivering a cinematic punch while offering outstanding value. Whichever path you choose, you'll be graced with a center channel speaker that refuses to compromise where it counts—in elevating your home theater experience to new, exhilarating heights.

Whether you prioritize the nuanced detail and elegance of the MartinLogan or the raw, certified performance of the Monoprice will ultimately dictate your decision. Both are exceptional in their rights, and either way, your home cinema will thank you for the upgrade. So, sit back, dim the lights, and let the centerpiece of your surround sound system transport you into the heart of the story.

Check Current Prices:

MartinLogan Motion 50XTi Center Channel Speaker
MartinLogan Motion 50XTi Center Channel Speaker
Monoprice Monolith THX-365C Center Channel Speaker
Monoprice Monolith THX-365C Center Channel Speaker

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Disclaimer: the speaker data listed on this website are correct to the best of our knowledge, but we do not guarantee the accuracy of the data. Please double-check any measurements with the manufacturer before making a final purchasing decision.