ARCAM is officially back in the loudspeaker business. At ISE 2026 in Barcelona, the British brand has unveiled the new Radia Series loudspeakers, a full-range lineup designed for both serious two-channel listening and modern home cinema systems. The range includes two bookshelf models, two floorstanders, a dedicated center channel, and a matching subwoofer—covering the basics without playing spec-sheet bingo. Designed to integrate cleanly with any high-quality hi-fi or AV setup, the Radia speakers also offer additional tuning advantages when paired with ARCAM’s latest Radia electronics, underscoring a return to system thinking rather than one-off products.
This marks a deliberate return to speaker design for ARCAM, which has spent the last several decades focused almost exclusively on electronics. While best known for amplifiers and digital components, the company is no stranger to loudspeakers, having launched the well-regarded ARCAM Two bookshelf speaker in the mid-1980s and later contributing designs like the Muso. With the Radia Series, ARCAM brings that legacy forward, backed by five decades of engineering experience and the extensive research, measurement, and testing resources available through HARMAN—a combination that signals this isn’t a nostalgia exercise, but a calculated move back into a category ARCAM clearly believes it belongs in.
“We are proud to launch the Radia Series loudspeakers,” said Mike Strange, Global Product Line Manager at ARCAM. “They complement the Radia Series perfectly and, thanks to our talented engineers and HARMAN’s world-class facilities, deliver the same remarkable standard of performance as our electronics. Our new loudspeakers integrate fully with ARCAM amplifiers and AV products, while excelling with any high-quality system.”
Design and Appearance
ARCAM sticks closely to the established Radia design language with these loudspeakers, and that’s a good thing. The cabinets are finished in a premium Black Walnut wood veneer, accented by a restrained yellow detail that nods to the broader Radia lineup without shouting for attention. Magnetically attached grilles keep the front profile clean and uninterrupted, and optional solid aluminum stands are available for the bookshelf models. The overall look is modern but grounded, designed to sit comfortably in real living spaces rather than demanding a dedicated listening bunker. They pair naturally with Radia electronics but look equally at home alongside other high-quality hi-fi or home cinema components.
System Matching and Versatility
The Radia loudspeakers are designed to work seamlessly with electronics from any brand, which matters if you’re not interested in locking yourself into a single ecosystem. That said, pairing them with ARCAM’s SA35 or SA45 streaming amplifiers unlocks additional fine-tuning through the company’s anechoic EQ (AEQ). This allows each speaker to be precisely optimized based on ARCAM’s anechoic measurements, automatically tailoring the amplifier’s output for maximum accuracy. AEQ will also be supported on the upcoming Radia Series AV amplifiers and processor, extending the same optimization benefits across full multichannel Radia systems. The takeaway is simple: they’re flexible by default, but smarter when kept in the family.
Cabinets and Drivers
Cabinet construction is clearly taken seriously. All enclosures are rigidly cross-braced to reduce unwanted resonance and maintain control at higher output levels. Across the five passive loudspeakers, high frequencies are handled by a 25 mm (1-inch) Deep Ceramic Composite aluminum dome tweeter mounted in an Acoustic Lens waveguide. This design improves dispersion and phase alignment, resulting in more consistent sound across the listening area and a stable, well-defined stereo image.
Low- and mid-frequency duties are handled by Micro Ceramic Composite cone woofers, selected for their balance of stiffness and low mass. The R15, R35, and R35C models use a 130 mm (5.25-inch) driver, while the larger R25 and R45 step up to a 165 mm version. Dedicated midrange drivers appear in the R35 and R45, using Deep Ceramic Composite units sized to match their respective cabinets. Rounding out the lineup, the R25B subwoofer employs a 250 mm (10-inch) coated fiber-composite cone woofer, delivering controlled, articulate bass suited to both music and film soundtracks without leaning on excess output for effect.
ARCAM Radia Series Loudspeakers
R15
The R15 is the entry point into the Radia Series and takes the form of a compact two-way bookshelf loudspeaker. It combines a 25 mm (1-inch) Deep Ceramic Composite (DCC) aluminum dome tweeter mounted in ARCAM’s Acoustic Lens waveguide with a 130 mm (5.25-inch) Micro Ceramic Composite (MCC) cone woofer. As with all Radia passive loudspeakers, the R15 can be fine-tuned using anechoic EQ (AEQ) when paired with the ARCAM SA35 or SA45 streaming amplifiers, as well as upcoming Radia Series AV products.
Key Specifications:
- Type: 2-way bookshelf
- Finish: Black Natural Walnut veneer
- Power Handling: 15–150 W
- Drivers:
- 130 mm (5.25″) MCC woofer
- 25 mm (1″) DCC dome tweeter with Acoustic Lens waveguide
- Enclosure: Rear-ported bass-reflex
- Crossover: 1.8 kHz
- Impedance: 6 ohms
- Sensitivity: 85 dB (2.83 V / 1 m)
- Frequency Response (±6 dB): 54 Hz–40 kHz
- Dimensions (W × D × H): 200 × 245 × 294 mm | 7.9 × 9.6 × 11.6 in
- Weight (each): 6.8 kg | 15.0 lbs
R25
The R25 is the largest bookshelf model in the Radia lineup and also uses a two-way crossover design. It steps up to a 165 mm (6.5-inch) MCC cone woofer while retaining the same 25 mm DCC tweeter and Acoustic Lens waveguide used throughout the series. The larger cabinet volume allows for greater low-frequency extension, while still keeping the speaker suitable for shelf or stand mounting in both stereo and surround applications.
Key Specifications:
- Type: 2-way bookshelf
- Finish: Black Natural Walnut veneer
- Power Handling: 15–200 W
- Drivers:
- 165 mm (6.5″) MCC woofer
- 25 mm (1″) DCC dome tweeter with Acoustic Lens waveguide
- Enclosure: Rear-ported bass-reflex
- Crossover: 1.7 kHz
- Impedance: 6 ohms
- Sensitivity: 85.5 dB (2.83 V / 1 m)
- Frequency Response (±6 dB): 43 Hz–40 kHz
- Dimensions (W × D × H): 246 × 323 × 359 mm | 9.7 × 12.7 × 14.1 in
- Weight (each): 11.0 kg | 24.3 lbs
R25B
The R25B subwoofer is designed to provide deep, controlled low-frequency support for both music-focused systems and full multichannel home cinema setups. It incorporates a 750-watt digital amplifier driving a 250 mm (10-inch) coated fiber-composite cone woofer. The emphasis here is on precision and control rather than excess, making it a natural match for the rest of the Radia Series.
Key Specifications:
- Type: Active subwoofer
- Finish: Black Natural Walnut veneer
- Driver:
- 250 mm (10″) coated fibre-composite cone
- Cast aluminum frame
- Amplification:
- 750 W RMS / 1,500 W peak
- Inputs:
- RCA LFE / line level
- 3.5 mm 12 V trigger
- Controls:
- Auto power, crossover, level, phase
- Crossover:
- Variable 50–150 Hz, 24 dB/octave
- Enclosure: Rear-ported bass-reflex
- Frequency Response (±6 dB): 26 Hz–150 Hz
- Power Requirements:
- 100–120 V or 220–240 V, 50–60 Hz
- Power consumption: 205 W
- Standby: <0.5 W
- Dimensions (W × D × H):
- 430 × 437 × 377 mm | 16.9 × 17.2 × 14.8 in
- Weight (each): 27.8 kg | 61.3 lbs
R35C
The R35C center channel is engineered to handle one of the most demanding roles in a surround system: dialogue reproduction. It features a 25 mm (1-inch) DCC aluminum dome tweeter mounted in the Acoustic Lens waveguide for wide, even dispersion and stable imaging, flanked by dual 130 mm (5.25-inch) MCC cone woofers. This configuration is intended to maintain clarity and tonal consistency across the front soundstage, even for off-axis listeners.
Key Specifications:
- Type: Centre channel loudspeaker
- Finish: Black Natural Walnut veneer
- Power Handling: 15–200 W
- Drivers:
- 2 × 130 mm (5.25″) MCC woofers
- 25 mm (1″) DCC dome tweeter with Acoustic Lens waveguide
- Enclosure: Rear-ported bass-reflex
- Crossover: 1.8 kHz
- Impedance: 6 ohms
- Sensitivity: 86 dB (2.83 V / 1 m)
- Frequency Response (±6 dB): 55 Hz–40 kHz
- Dimensions (W × D × H): 595 × 277 × 181 mm | 23.4 × 10.9 × 7.1 in
- Weight (each): 12.3 kg | 27.1 lbs
R35
The R35 is the more compact of the two floorstanding models and employs a three-way crossover design. High frequencies are handled by the familiar 25 mm DCC tweeter in the Acoustic Lens waveguide, while low frequencies are managed by three 130 mm MCC cone woofers. A dedicated 130 mm DCC cone driver covers the midrange. Designed to pair particularly well with the ARCAM Radia SA35, the R35 is aimed at smaller to medium-sized rooms where space is limited but full-range performance is still expected.
Key Specifications:
- Type: Floorstanding loudspeaker
- Finish: Black Natural Walnut veneer
- Power Handling: 30–225 W
- Drivers:
- 3 × 130 mm (5.25″) MCC woofers
- 130 mm (5.25″) DCC midrange driver
- 25 mm (1″) DCC dome tweeter with Acoustic Lens waveguide
- Enclosure: Bass-reflex with dual rear-mounted ports
- Crossover Frequencies: 350 Hz / 2.1 kHz
- Impedance: 6 ohms
- Sensitivity: 87 dB (2.83 V / 1 m)
- Frequency Response (±6 dB): 36 Hz–40 kHz
- Dimensions (W × D × H, incl. plinth):
- 302 × 353 × 1,038 mm | 11.9 × 13.9 × 40.9 in
- Weight (each): 29.1 kg | 64.0 lbs
R45
Sitting at the top of the Radia Series, the R45 is the largest and most capable loudspeaker in the range. It also uses a three-way crossover design, featuring three 165 mm MCC cone woofers for low frequencies, a 165 mm DCC cone midrange driver, and the same 25 mm DCC aluminum dome tweeter with Acoustic Lens waveguide. Intended as the ideal partner for the ARCAM Radia SA45, the R45 is designed to deliver greater authority, extended low-frequency performance, and precise imaging in larger listening rooms.
Key Specifications:
- Type: Floorstanding loudspeaker
- Finish: Black Natural Walnut veneer
- Power Handling: 20–250 W
- Drivers:
- 3 × 165 mm (6.5″) MCC woofers
- 165 mm (6.5″) DCC midrange driver
- 25 mm (1″) DCC dome tweeter with Acoustic Lens waveguide
- Enclosure: Bass-reflex with dual rear-mounted ports
- Crossover Frequencies: 275 Hz / 1.7 kHz
- Impedance: 6 ohms
- Sensitivity: 88 dB (2.83 V / 1 m)
- Frequency Response (±6 dB): 30 Hz–40 kHz
- Dimensions (W × D × H, incl. plinth):
- 358 × 415 × 1,127 mm | 14.1 × 16.3 × 44.4 in
- Weight (each): 39.7 kg | 87.5 lbs
The Bottom Line
The Radia Series loudspeakers are not a casual return to form, and they’re certainly not priced like one. This is a serious, full-range speaker launch from ARCAM, and the pricing makes it clear these are aimed at buyers who already understand what well-engineered loudspeakers cost in 2026. Nothing here is inexpensive, but nothing feels arbitrary either. The design, materials, and system integration point to a deliberate strategy rather than a branding exercise.
What’s genuinely innovative is not a single headline feature, but the way ARCAM has approached the entire range as a system. The consistent use of Acoustic Lens waveguides, DCC and MCC drivers, rigidly braced cabinets, and—critically—the ability to apply anechoic EQ when paired with Radia electronics gives the lineup a level of coherence that many competitors still treat as optional. Add in the likely impact of HARMAN’s measurement, simulation, and testing resources, and it’s hard to argue that these speakers were rushed or undercooked. If anything, that shared R&D infrastructure probably allowed ARCAM to move faster while being more confident in the results.
These speakers are for listeners who want a clean path to a high-performance stereo or home cinema system without gambling on mismatched components. They’ll appeal to existing ARCAM owners looking to build a unified Radia system, but they’re just as relevant for experienced buyers who already own quality electronics and want speakers that don’t impose their own personality. This is not ARCAM dipping a toe into a crowded market with crossed fingers and good intentions. It’s a calculated re-entry, backed by serious engineering, realistic pricing, and a clear sense of who the customer is—and who it isn’t.
Pricing & Availability
The ARCAM Radia Series loudspeakers will be available through authorized ARCAM dealers beginning in Q2 2026, with products expected to reach retail shelves by May 2026. At the time of announcement, ARCAM has confirmed UK and European pricing; USD and Canadian pricing have not yet been announced and are still pending.
- R15 (pair): £1,699 / €2,000
- R25 (pair): £2,599 / €3,000
- R35 (each): £1,999 / €2,500
- R45 (each): £2,999 / €3,500
- R35C (each): £1,699 / €2,000
- R25B subwoofer (each): £2,599 / €3,000
We will update this section once U.S. and Canadian pricing is officially confirmed.
Related Reading:
