Cambridge Audio L/R M Versatile Active Stereo Streaming Speakers

The Cambridge Audio L/R M Versatile Active Stereo Streaming Speakers are a complete hi-fi system in a pair of speakers. 300 watts of total power, force-cancelling passive radiators, built-in StreamMagic streaming, HDMI eARC for your TV, and a moving magnet phono stage for your turntable. The L/R M delivers full-range sound down to 40Hz that typically requires a separate amplifier, passive speakers, and a streaming box. All in a package that sits on a shelf or a pair of stands.

Key Features of the L/R M Speakers

• 300 Watts Total Power: Two 150W amplifiers deliver powerful, dynamic sound that effortlessly fills medium to large rooms.
• Advanced Driver Array: A custom 28mm tweeter, two 4-inch woofers, and dual 4.75-inch passive radiators, all designed in-house by Cambridge Audio.
• Force-Cancelling Passive Radiators: Eliminates cabinet vibrations and allows flexible placement near walls without boominess.
• StreamMagic Gen 4: Built-in streaming module supports Spotify Connect, TIDAL Connect, Qobuz, Roon Ready, AirPlay 2, and Google Cast.
• HDMI eARC Input: Connects directly to your TV for an instant, high-quality sound upgrade with volume control via your TV remote.
• Integrated Phono Stage: Dedicated Moving Magnet (MM) input allows you to plug a turntable directly into the speakers.
• 64-Bit DSP + Speaker Protection: Run at maximum volume without distortion or risk of driver damage.
• High-Resolution Audio: Supports playback of high-res files up to 32-bit/384kHz and DSD512.
• Six Finishes: Available in Black, White, Orange, Green, Blue, or Walnut (genuine walnut veneer).

Cambridge Audio L/R M: Heritage Meets Modern Convenience

Cambridge Audio has been designing and engineering audio equipment in Britain since 1968. Their first product was an integrated amplifier built around a toroidal power supply, and that engineering-first philosophy carries straight through to the L/R M. Every driver in these speakers is designed and engineered in-house by Cambridge, not sourced off the shelf. The 28mm custom tweeter, the dual 4-inch woofers, and the 4.75-inch passive radiators are all purpose-built for this specific cabinet and this specific sound signature. The result is a speaker tuned by Ollie Mayston, the lead engineer who previously tuned the Naim Muso 2 and Qb2, and contributed significantly to the Focal Utopia headphones.

Passive Radiators: Why Placement Flexibility Matters

Most compact speakers use rear-firing ports to extend bass response. The problem is physics: push a rear-ported speaker close to a wall and the bass gets boomy and undefined. Pull it too far out and you lose low-end extension. The L/R M sidesteps this entirely with force-cancelling passive radiators. These radiators serve two purposes. First, they extend bass response down to 40Hz without a port, so you can place the speakers near a wall without the bass turning to mud. Second, the force-cancelling design neutralizes cabinet vibrations. That matters because in the real world, people put speakers on shelves, on top of cabinets, on kitchen counters, anywhere that fits. A speaker that vibrates on a shelf creates rattles and resonances that color the sound. The L/R M doesn't vibrate, so you can place it wherever works for your room and trust that it will sound the way Cambridge Audio intended.

Two Woofers, Two Crossover Points

The L/R M uses a dual-woofer configuration that's more sophisticated than it might first appear. The front-facing 4-inch woofer handles the upper bass and lower midrange, while the downward-firing 4-inch woofer is crossed over at a different point to handle the deepest frequencies. This split-crossover approach lets each driver work in its optimal range rather than asking a single woofer to cover everything from deep bass to midrange vocals. Combined with the passive radiators, the result is bass that has genuine texture and articulation, not just volume.

64-Bit DSP: Turn Them Up Without Worry

Behind the drivers, a precision 64-bit DSP pipeline manages everything from crossover duties to dynamic equalization to speaker protection. The practical upshot is that you can run the L/R M at maximum volume without distortion and without risk of blowing a driver. Cambridge Audio's protection circuitry continuously monitors the system and intervenes before anything gets stressed. So if the speakers are in a common area where other people control the volume, or you just want to push them hard on a Saturday night, you don't need to worry about it.

StreamMagic Gen 4: Every Streaming Service, One App

The L/R M runs on Cambridge Audio's 4th generation StreamMagic platform, which has quietly become one of the better streaming interfaces in the hi-fi world. It handles Spotify Connect, TIDAL Connect, Qobuz, Amazon Music, Deezer, plus internet radio natively, with support for high-resolution files up to 32-bit/384kHz and DSD512. Beyond the app, the L/R M supports AirPlay 2, Google Cast, and is Roon Ready, so it fits into whatever multi-room setup you already use. If you have a StreamMagic system in your main listening room, you can add L/R M speakers in the kitchen, bedroom, or office and keep everything on one platform.

One practical detail worth noting: the StreamMagic app remembers volume settings for each individual input. So if you have the TV at one level and Spotify at another, switching between them doesn't blast you out or drop to a whisper. You can also hide inputs you don't use, keeping the interface clean and simple for anyone in the household.

Connectivity That Covers Everything

The L/R M is designed to be the hub of your system, not a single-purpose speaker. HDMI eARC connects to your TV with volume control through your existing remote, turning the L/R M into a massive upgrade over a sound bar. The built-in moving magnet phono stage lets you plug a turntable in directly, no external phono preamp needed. Beyond that, you get USB-C for computers, USB-A for media drives, Optical TOSLINK, RCA line input, and Bluetooth. Short of a record player that needs a moving coil stage, there isn't a source the L/R M can't handle.

Six Finishes, Including Real Walnut Veneer

The L/R M is available in six finishes: Black, White, Orange, Green, Blue, or Walnut. The walnut finish is genuine walnut veneer, not a vinyl wrap, and carries a modest premium at $1,699/pair (vs. $1,599 for the other finishes). Cambridge Audio partnered with London-based designer Maharishi on the green colorway, and the orange has a metallic quality that is significantly more refined in person than in photographs. These speakers were designed by industrial designer Martin Sherwood with as much attention to looks as to sound, and the fit and finish reflects that.

Explore the Full Cambridge Audio L/R Series

The L/R M is the versatile middle ground in Cambridge Audio's active speaker lineup. Need something more compact, or ready to step up to the flagship? Explore the rest of the series:

• L/R S - Compact active speakers with 100W of power, Bluetooth aptX HD, and wired inputs. Perfect for desktops, bookshelves, and small spaces.
• L/R X - The flagship of the series with 800W of power, WiSA wireless speaker link, and audiophile-grade performance for serious listeners.

The Listening Room Difference

We're a third-generation family business with a brick-and-mortar showroom in Chestertown, Maryland, and a reputation built on exceptional service and relentless passion for hifi. Whether you're visiting in person or ordering online, we bring decades of experience, personalized service, and honest guidance to every interaction. We don't just ship boxes. We help build systems, answer your questions like real humans, and make sure every detail of your setup is right, from the cables to the final connection. Our passion is helping you get the most out of your gear, with support that lasts well beyond the sale.

L/R M Specifications