Monitor 40

The most accurate studio speaker

The three-way Harbeth M40 Reference Monitor family has produced thousands of hours of network radio, TV and post production over twenty years. It’s the latest generation and has been substantially re-engineered for higher efficiency, lower distortion, lower coloration and far better dispersion than its 1970s two-way predecessors. The brilliantly transparent Harbeth RADIAL™ midrange driver works in its own sealed cabinet, isolated from the high pressure bass unit. The overall sound is fresh, clean, clear and totally fatigue-free. Performers are placed accurately and naturally in 3D space.

As with all members of the Harbeth Monitor 20/30/40 family, projects started on one speaker can be reworked on others with complete confidence thanks to a common design philosophy and resulting sonic presentation. The last word in sonic accuracy is indeed the Monitor 40.2, available in professional matt grey or a range of veneer options.

Harbeth’s Monitor 40.2s are at the heart of mainstream TV production. They are in daily use at the British Library’s National Sound Archive for forensic audio restoration.

Technical specifications

Technical Features
3-way vented: 300mm Harbeth bass unit; 200mm RADIAL2™ mid; 25mm Ferro-cooled soft dome tweeter

Frequency response
35Hz – 20kHz +/-3dB free-space, grille on, smooth off-axis response

Impedance
6-8 ohms, easy to drive

Sensitivity
86dB/2.83V/1m axial

Amplifier suggestion
From 100W/ch is recommended for high dynamic material

Power handling
650W programme

Grille colour
Black

Dimensions
750 x 432 x 388 mm

Connectors
SpeakON 2-pole socket (or binding posts)

Weight
37.8kg each (without packing)

Space needs
LF optimised for use away from reflective surfaces.

Stands
Optimally to bring ears level with tweetrs. (Tweeter: 440mm up from cabinet base)

Packing
Single speaker per shipping carton

 

Praise

“I have used Harbeth monitors at home for over twenty years, so why would I want anything less when balancing the sound mix for ITV’s The X-Factor in 5.1..”

– Robert Edwards, Broadcast Sound Director

© All Rights Reserved
Harbeth Audio Ltd., UK
2025

© All Rights Reserved
Harbeth Audio Ltd., UK
2025

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