# Monitor Audio Radius 1 4G Bookshelf Speakers (Pair)

The Monitor Audio Radius 1 4G is an ultra-compact bookshelf speaker built for discreet AV, surround and multi-room sound systems.

Despite its tiny footprint, this pair delivers genuine hi-fi performance thanks to a newly designed 4-inch C-CAM RST III bass/mid driver working alongside a 19 mm C-CAM Gold Dome tweeter.

The result is precise, lifelike sound with exceptional clarity, controlled dispersion and low distortion, all hallmarks of Monitor Audio's metal-driver expertise.

Radius 1 4G suits wall, desktop or floor stand mounting via compatible accessories, and pairing it with a Monitor Audio subwoofer unlocks truly full-range performance.

-   **Compact C-CAM Driver Array:** A 4-inch C-CAM RST III bass/mid driver and 19 mm C-CAM Gold Dome tweeter combine to deliver precise, lifelike sound from a micro-speaker form factor.
-   **New Crossover Design:** Refined for the 4G generation to improve integration between the driver and tweeter for a more cohesive sound.
-   **Through-Bolt Driver Bracing:** Reinforces the driver mounting for a more rigid, resonance-free cabinet.
-   **HiVe II Ports:** Engineered to reduce turbulence and port noise for cleaner bass output.
-   **Versatile Mounting:** Wall, desktop or floor stand options via compatible MASM and FIX-M brackets suit discreet AV, surround and multi-room installations.
-   **Subwoofer Ready:** Add a Monitor Audio subwoofer for genuinely full-range sound when more low-end is needed.

###### Specifications

-   **System Format:** 2-Way
-   **Frequency Response, In-Room (-6dB):** 100 Hz - 35 kHz
-   **Sensitivity (2.83 Vrms @ 1m, Free-Field):** 82 dB
-   **Nominal Impedance:** 8 Ohms
-   **Minimum Impedance (20 Hz to 20 kHz):** 3.8 Ohms @ 950 Hz
-   **Maximum Peak SPL (AES75, Z-weighted):** 104 dB
-   **Continuous Power Handling (CTA 426-B):** 50 W
-   **Recommended Amplifier Power (RMS, Music Signal):** 50-100 W into 4 Ohms, 25-50 W into 8 Ohms
-   **Bass Alignment:** Sealed
-   **Crossover Frequency:** LF/HF: 3.2 kHz
-   **Drive Unit Complement:** 1× 4" RST III bass-mid driver, 1× 19 mm C-CAM Gold Dome tweeter
-   **Finishes:** High Gloss Black, Satin White
-   **External Dimensions (H × W × D):** 135 × 135 × 156 mm
-   **Weight (each):** 1.8 kg
-   **Sold As:** Pair
-   **Warranty:** 5 years
-   **Compatible MAG Brackets:** MASM, FIX-M

###### What You Get

-   2 x Radius 1 Speakers

## Details

- **Price:** 425.0 GBP
- **Vendor:** Monitor Audio
- **Type:** Bookshelf Speakers
- **Tags:** New

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Black | 425.00 GBP | In stock |
| White | 425.00 GBP | In stock |

## Images

- Monitor Audio Radius 1 4G Bookshelf Speakers (Pair) Bookshelf Speakers Monitor Audio Black 
- Monitor Audio Radius 1 4G Bookshelf Speakers (Pair) Bookshelf Speakers Monitor Audio White 
- Monitor Audio Radius 1 4G Bookshelf Speakers (Pair) Bookshelf Speakers Monitor Audio 
- Monitor Audio Radius 1 4G Bookshelf Speakers (Pair) Bookshelf Speakers Monitor Audio 
- Monitor Audio Radius 1 4G Bookshelf Speakers (Pair) Bookshelf Speakers Monitor Audio 
- Monitor Audio Radius 1 4G Bookshelf Speakers (Pair) Bookshelf Speakers Monitor Audio 
- Monitor Audio Radius 1 4G Bookshelf Speakers (Pair) Bookshelf Speakers Monitor Audio 

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> Source: [K&B Audio](https://www.kbaudio.co.uk/products/monitor-audio-radius-1-4g-bookshelf-speakers-pair)
> Updated: 2026-08-05