Arcam Radia Speakers Now on Demo

Arcam Radia Speakers - The Complete Picture.

Arcam has been rather busy as of late and on somewhat of a roll. The Radia electronics range landed and promptly swept up four What Hi-Fi? Awards in 2025. Then came the announcement of new AV amplifiers (landing soon), and now, completing the picture, Arcam has launched a full range of loudspeakers. This is Arcam thinking in systems and wanting to make synergy as easy as possible.

 

Revel DNA, British Sensibility

 

The design influence here is no secret, Arcam sits within the HARMAN Luxury Audio Group alongside Revel, who make some exceptional speakers and the Radia speakers borrow liberally from that relationship and tapping into their expertise. All the Radia speakers feature the signature Acoustic Lens waveguide, a hallmark Revel feature, paired to a 25mm Deep Ceramic Composite (DCC) aluminium dome tweeter. The result is wide, even dispersion and better off axis performance. Cabinets are rigidly cross-braced to keep resonance in check, and they all come in a Black Walnut veneer finish with subtle yellow accents that ties everything neatly into the wider Radia aesthetic. For all this engineering the Radia range of speakers is still coming in at an attractive price point.

 

The Range

 

Arcam R15 Bookshelf Speaker - £1,699
The entry point to the Radia speaker range, and a thoroughly capable one. A two-way bookshelf design built around a 5.25inch MCC (Micro Ceramic Composite) cone woofer and the series-wide 1-inch DCC aluminium dome tweeter in its Acoustic Lens waveguide. Compact, refined, and AEQ-compatible with the SA35, SA45, and Radia AV products.

Enclosure Tuning: Bass-Reflex via Rear-Mounted Port

Crossover Frequency:1.7 kHz

Nominal Impedance: 6 Ohms

Frequency Response ± 6dB: 43Hz-40kHz

Sensitivity @ 1M, 2.83V: 85.5 dB

Dimensions W x D x H: W 246 x D 323 x H 359mm (9.7 x 12.7 x 14.1 in)

 

R25 - £2,599

The larger bookshelf model steps up to a 6.5-inch MCC cone woofer in a slightly larger cabinet, giving it a bit more depth than the R15 getting down to 43hz ± 6dB. The same two-way topology and DCC tweeter arrangement apply — more scale, same precision. If the room allows, this is the bookshelf to go for.

Enclosure Tuning: Bass-Reflex via Rear-Mounted Port

Crossover Frequency:1.7 kHz

Nominal Impedance: 6 Ohms

Frequency Response ± 6dB: 43Hz-40kHz

Sensitivity @ 1M, 2.83V: 85.5 dB

 

R35 - £3,999
The more compact of the two floor standers, a three-way design with three 5.25-inch MCC woofers, a dedicated 5.25-inch DCC midrange driver and the usual 1inch tweeter and waveguide. Designed as the natural partner for the SA35 in the right room.

Enclosure Tuning: Bass-Reflex via Dual Rear-Mounted Ports

Crossover Frequencies: 350 Hz / 2.1 kHz

Nominal Impedance: 6 Ohms

Frequency Response ± 6dB: 36Hz-40kHz

Sensitivity @ 1M, 2.83V: 87 dB

 

R45 - £5,999
The flagship. Three 6.5-inch MCC woofers, a 6.5-inch DCC midrange, and 1inch DCC dome aluminium tweeter in the signature.

Enclosure Tuning: Bass-Reflex via Dual Rear-Mounted Ports

Crossover Frequencies: 275 Hz / 1.7 kHz

Nominal Impedance: 6 Ohms

Frequency Response ± 6dB: 30Hz-40kHz

Sensitivity @ 1M, 2.83V: 88 dB

 

 

R35C - £1,699 each
Twin 5.25-inch MCC woofers and the 1-inch DCC tweeter in its Acoustic Lens waveguide ensures wide, even dispersion and the kind of precise imaging that keeps voices clear and tangible.

Enclosure Tuning: Bass-Reflex via Rear-Mounted Port

Crossover Frequency: 1.8 kHz

Nominal Impedance: 6 Ohms

Frequency Response ± 6dB: 55Hz-40kHz

Sensitivity @ 1M, 2.83V: 86 dB

 

R25B - £2,599 each
The only sub in the range. A 750-watt class D amp drives a 10 inch coated fibre-composite cone woofer, delivering deep, controlled bass whether anchoring a 2.1 music system or rounding off a full surround setup.

Amplifier Power: 750-Watt RMS/1500-Watt Peak Power

Inputs: RCA LFE/Line Level, 3.5mm 12V Trigger

Controls: Auto Power, Crossover, Level, Phase

Crossover Frequencies: 50Hz-150Hz (variable) 24dB/octave

Enclosure Tuning: Bass-Reflex via Rear-Mounted Port

Frequency Response ± 6dB: 26Hz-150Hz

 

Anechoic EQ

Pair these speakers with Arcam's SA35 or SA45 streaming amplifiers (or the new Radia AVA cinema amplifiers), and you unlock what Arcam calls Anechoic EQ, or AEQ. Arcam and HARMAN have tested each speaker model in their own anechoic chambers and built specific tuning profiles that automatically optimise the amplifier's output to match the speaker. So, by knowing the optimal result in an anechoic chamber, the DSP tries to bring that back in your room.

 

Cinema Synergy

With the new Radia AVA15, AVA25, and AVA35 AV amplifiers arriving soon, the full Radia speaker range becomes a genuinely compelling home cinema platform. R45 or 35 as fronts, their R35c dedicated centre, R25 or 15 as rears and the R25B Sub to round things off, there are many different configurations possible depending upon your room size and speaker placement. We are just hoping to see them launch a speaker suitable for height channels to help complete ATMOS systems but in the meantime there are plenty of alternatives for this application.

 

Our first delivery of Radia speakers unfortunately did not include a centre channel so Simon here, perhaps fuelled by excessive amounts of coffee decided to improvise by laying two R15s on their sides propped up with some Isoacoustics platforms and wiring them up as a makeshift centre channel. It surprisingly worked well, we were expecting more phase and cancellation issues and a hollow sound, but testing it out with a little bit of Baby driver and it didn’t do badly, though we will wait for the R35C to arrive for sure! in the meantime though it’s doing the job of running them in.

 

If you'd like to hear what the Radia speakers can actually do, then we are more than happy to arrange a demonstration. Just give us a call on 01707 320 788 or email sales@nintronics.co.uk and we will be happy to help.