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Description

The Monitor Audio Radius 3 4G is a high-performance mini-monitor speaker built for TV, film, music, gaming and multi-room applications.

A 4.5-inch C-CAM RST III bass/mid driver pairs with a 25 mm C-CAM Gold Dome tweeter, each powered by its own optimised motor system, to produce expansive, detailed sound far beyond what its compact dimensions suggest.

Through-bolt driver bracing, HiVe II port technology and a precision-engineered crossover work together to deliver tight bass, controlled dispersion and exceptional clarity across the frequency range.

Flexible wall, desktop or floor stand mounting makes the Radius 3 4G easy to integrate into any residential or commercial space, and pairing it with a Monitor Audio subwoofer unlocks truly full-range performance.

  • Dual-Motor Driver System: A 4.5-inch C-CAM RST III bass/mid driver and 25 mm C-CAM Gold Dome tweeter, each with its own optimised motor, deliver detailed sound with real dynamic headroom.
  • New Crossover Design: Precision-engineered for the 4G generation to improve integration between the driver and tweeter.
  • Through-Bolt Driver Bracing: Reinforces the driver mounting for a more rigid, resonance-free cabinet.
  • HiVe II Ports: Reduce turbulence and port noise for cleaner, more controlled bass.
  • Flexible Mounting: Wall, desktop or floor stand options via compatible FIX-M brackets suit both residential and commercial installations.
  • Subwoofer Ready: Pair with a Monitor Audio subwoofer for genuinely full-range performance.
Specifications
  • System Format: 2-Way
  • Frequency Response, In-Room (-6dB): 44 Hz - 35 kHz
  • Sensitivity (2.83 Vrms @ 1m, Free-Field): 84 dB
  • Nominal Impedance: 8 Ohms
  • Minimum Impedance (20 Hz to 20 kHz): 4 Ohms @ 250 Hz
  • Maximum Peak SPL (AES75, Z-weighted): 107 dB
  • Continuous Power Handling (CTA 426-B): 75 W
  • Recommended Amplifier Power (RMS, Music Signal): 75-150 W into 4 Ohms, 40-75 W into 8 Ohms
  • Bass Alignment: Ported
  • Port Tuning Frequency: 53 Hz
  • Crossover Frequency: LF/HF: 2.7 kHz
  • Drive Unit Complement: 1× 4.5" RST III bass-mid driver, 1× 25 mm C-CAM Gold Dome tweeter
  • Finishes: High Gloss Black, Satin White
  • External Dimensions (H × W × D): 255 × 150 × 201 mm
  • Weight (each): 3.7 kg
  • Sold As: Pair
  • Warranty: 5 years
  • Compatible MAG Brackets: FIX-M
What You Get
  • 2 x Radius 4 Speakers
Delivery & Returns

Delivery: Free standard 2-3 working day delivery on all  UK* orders over £50. Premium next-day options are available on selected products at checkout. Learn More

Returns: All orders come with a 60 day "Happy Sound Guarantee" allowing you to return your item(s) for refund or exchange and a 5 Years warranty for peace of mind. Learn More

*Surcharges apply to off-shore and highlands, see pricing at checkout.

Payment & Security
Payment methods
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Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

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