Grimm Audio LS1a Loudspeaker

For the music lover who desires the legendary transparency of the Grimm Audio LS1 system, the LS1a is the long-awaited answer. It embodies the exact same vision as its more costly siblings: that ultimate sonic purity can only be achieved by integrating the entire playback chain—DSP, converters, amplifiers, and drivers—into a single, perfectly optimized system. The LS1a possesses all the essential qualities that make the LS1 a true reference, delivering breathtaking clarity and a perfectly linear phase and amplitude response. Through a series of rational design choices, Grimm Audio has made this reference-level performance accessible to a wider audience. This is not a compromised design; it is the pure, uncolored Grimm Audio experience, simplified.

Key Features

• Fully Integrated Active System: A complete playback system with internal DSP, D/A converters, and NCore power amplifiers for the purest possible signal path.
• DSP Controlled Frequency Curve: A powerful DSP linearizes the frequency response, ensuring a perfectly neutral and accurate sound.
• Unidirectional Sound Field: The unique wide-baffle cabinet is designed to be unidirectional down to 250 Hz, dramatically reducing unwanted room reflections for a clearer, more focused stereo image.
• Superb Off-Axis Response: Delivers a consistent, high-quality sound over a wide listening area, not just in a single "sweet spot."
• Digital and Analog Inputs: Accepts both digital (three AES/EBU) and analog sources for complete system flexibility.
• Seamless Subwoofer Integration: Features a filtered analog subwoofer output designed for perfect integration with the LS1s or SB1 subwoofers.
• Ultra-Low Distortion Amplification: Employs super-low distortion NCore class D power amps for absolute control and vanishingly low distortion.
• Remote Controllable: Volume and source selection can be controlled via the optional LS1r remote controller.
• Elegant Lacquered Finish: The cabinet is finished in a beautiful, durable lacquer.

The "One System" Philosophy, Made Accessible

The LS1a is built on a radical principle: ultimate transparency can only be achieved when the entire playback chain is a single, optimized system. By integrating the DSP, D/A converters, amplifiers, and drivers into one chassis, Grimm Audio's designers have complete control over every interaction. This allows them to correct for nonlinearities in a way that is simply impossible with separate components. The LS1a brings this revolutionary philosophy to a new price point, delivering the incredibly linear amplitude and phase response that has made the LS1 series a legend in professional and audiophile circles.

Rational Choices, Reference Performance

The key to the LS1a's value lies in a series of intelligent, rational design choices. While it retains the exact same DSP engine, amplification, and acoustic design as its siblings, it features a high-quality non-magnesium woofer, a lighter foot plate, and a classic lacquered cabinet finish. Furthermore, while every LS1a benefits from the precise Computer Aided Calibration process during production, it forgoes the final, time-intensive individual acoustic calibration of each specific cabinet. These choices significantly reduce the cost without altering the core reference-level performance and breathtaking transparency that define the LS1 experience.

Acoustic Precision by Design

The unique form of the LS1a is a direct result of its acoustic function. The small, 14-litre sealed cabinet is much wider than it is deep, creating an effective baffle that controls the sound dispersion down to 250 Hz. This unidirectional characteristic means you hear more of the direct sound from the speaker and less of the reflected sound from your room's walls, resulting in a dramatically clearer and more stable stereo image. This clever design also allows for placement closer to a wall than traditional speakers, making it a perfect solution for a variety of listening spaces.

A System Ready to Grow

The LS1a is a stunning full-range performer on its own. For those seeking to create a truly state-of-the-art three-way system, it is designed for perfect integration with Grimm Audio's subwoofers. The filtered analog subwoofer output provides a seamless connection to the LS1s or the flagship SB1 Digital Motion Feedback subwoofer. This creates a perfectly phase-aligned, full-range system capable of handling any musical genre in any size room with breathtaking authority and control.

The Listening Room Difference

When you shop with The Listening Room, you get more than just gear. As a third-generation, family-run business with a passion for music and decades of experience, we offer personalized service that goes far beyond the sale. Call, text, or email, and you’ll get a real human who knows this equipment inside and out. From in-store demos to curated home system design and wide-radius delivery, we’re here to help you get the absolute best out of your purchase.

Specifications