Cambridge Audio's RoomMagic Brings Free Phone-Measured Bass Correction to L/R X and L/R M

Cambridge Audio has added automatic room correction to its active streaming speakers for the first time. Called RoomMagic, it arrived on 11 November as part of StreamMagic app version 4.5.0 and is a free feature for owners of the L/R X and L/R M. There is, in Cambridge's words, no trial, no lite version and no subscription; it is not sold separately, and new units ship with it already in place. Existing owners update the app and then the speakers.

The same day, the compact L/R M went on sale in the UK at about $1,610 (£1,199) a pair, with StereoNET reporting US and European availability in early December.

Measuring with the phone already in your pocket

The headline idea behind RoomMagic is that no extra hardware is involved. According to Cambridge Audio, the system uses the microphone built into the owner's own phone or tablet — no calibrated measurement mic, no stand, no laptop running analysis software. The community announcement, posted by community manager Liam McMillan, describes a guided process in the StreamMagic app that takes a few minutes.

Two measurements are involved. The first calibrates the microphone in the specific handset being used, which Cambridge says is what allows the results to hold up whichever phone you use. The second is taken at the listening position itself. From there the app builds the correction.

What that correction does is deliberately bounded. Cambridge says RoomMagic concentrates on bass, on the grounds that this is where a room has the greatest effect on what you hear. Above the bass it applies only small corrections, and only where the room is causing a clear peak. The stated aim is to protect headroom, dynamics and the voicing of the speaker rather than to rewrite it — in Cambridge's framing, to make the speaker sound the way it was designed to sound in an ideal room. All of that is the manufacturer's description of its own system; no independent measurements have been published.

Owners get three bass targets — Leaner, Balanced and Fuller — which can be switched instantly without taking a new measurement, plus a before/after toggle so the change can be heard directly. Cambridge is candid that the size of that change depends on the room: obvious in a difficult one, more subtle in a room that already behaves well. A supporting video features Ollie Marshall, Cambridge's head of acoustics, and acoustics engineer Finn Alderson.

It is worth being clear about what has not been stated. Cambridge has not published a correction frequency range, a filter count, or any support for multiple listening positions or saved profiles. Nor has it said RoomMagic is heading to other StreamMagic products — only that new capabilities arrive as the platform develops. Writing for ecoustics, Robert Silva characterised the system as narrower in scope than full-range platforms such as Dirac Live or Anthem ARC; that comparison is that outlet's assessment rather than a measured finding.

The L/R M lands in the UK

RoomMagic's arrival coincides with the retail debut of the speaker that sits in the middle of the range. The L/R M slots between the smaller L/R S and the L/R X, and StereoNET's rundown, together with Cambridge's original January press release, sets out a fairly dense little box.

Each speaker carries the same 28mm Torus tweeter as the L/R X, two 4-inch woofers — one facing forward, one firing from the base — and two 4.75-inch force-cancelling passive radiators, in a 2.5-way arrangement. Amplification is 150W per speaker, 300W for the pair, running through a 64-bit processing pipeline with Cambridge's DynamEQ.

Connectivity is the part that makes the "full system" claim stick. StreamMagic Gen 4 brings Spotify, TIDAL and Qobuz Connect, Amazon Music, Deezer, Roon, UPnP, internet radio, AirPlay 2, Google Cast and Bluetooth. Physical inputs run to HDMI eARC, a moving-magnet phono stage, analogue line, optical, USB Media and USB Audio, plus a subwoofer output. The two speakers link to each other over USB-C at 24-bit/96kHz; the wireless WiSA HT link is reserved for the L/R X.

Finishes are Orange, Black, White, Green, Blue and Real Walnut.

Prices and timing

The L/R M is about $1,610 (£1,199) a pair in the UK, with an official US price of $1,599 and a European price of about $1,570 (€1,399). Real Walnut carries a premium: about $1,740 (£1,299) in the UK, $1,699 in the US, about $1,680 (€1,499) in Europe. The larger L/R X is listed on Cambridge's own site at about $2,410 (£1,799) per pair; published US figures for that model disagree, so it is better left alone until Cambridge confirms one.

On timing, Cambridge's January announcement targeted late summer 2026 for the L/R M. StereoNET now reports UK availability from 11 November with the US and EU following in early December, while Cambridge's own product page still shows a waitlist signup. No reason for the shift has been given.

For existing L/R X owners, the practical news is simpler: a feature that would normally arrive as a paid add-on or a separate licence has landed as a free app update, with the measurement hardware already in their pocket. Full details are on Cambridge Audio's RoomMagic page.

Dollar figures converted from UK and EU pricing at the ECB reference rate of 10 November 2026; US prices quoted are Cambridge Audio's official figures.