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Monitor Audio Platinum PL In-Wall Speaker (3 Pack)

Monitor Audio

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The ultimate home cinema room requires the ultimate speakers. Monitor Audio's Platinum in-wall speakers are every bit as outstanding as the rest of the Platinum range of traditional speakers. With a rotating mid-range housing, this in-wall speaker can be used either as a centre or front speaker.

There is no compromising when it comes to the design and performance of this magnificent speaker. Twin 6.5" RDT bass drivers lead the way along with a 4" RDT mid-range driver and the brilliant universally acclaimed ribbon tweeter. Performance is clearly packed in and in doing this Monitor Audio's fine engineers may have pulled off the AV miracle of the century!

The Platinum In-Wall speaker is designed and executed as such that it seamlessly blends into any environment and can be used in tandem with the rest of the Platinum range. The perfect match! The speaker fits nicely between any stud-wall type construction, and the CNC machined baffle construction ensures the housing is rock solid, rigid and will securely fit to your wall. The grille, black in colour but can also be painted to suit the rooms décor, features a magnetic assembly with no visible fixings.

  • Tick High power handling and SPL capability for serious high end theatre systems.
  • Tick Wide frequency bandwidth to enhance HD audio and Blu-ray reproduction.
  • Tick Full 3-way design featuring RDT and ribbon HF driver technology.
  • Tick Rotating mid-range/HF housing to provide H or V orientation.
  • Tick CNC Machined ARC baffle construction providing rigid, non resonant fixing to the wall.
  • Tick Rigid MDF shell with steel back panel.
  • Tick Suitable for retro-fit installation.
  • Tick Tri-Grip dog leg fixings (10 locations).
  • Tick Magnetic grille assembly - No visual fixings.


Having various applications within a number of our speaker ranges, this high-tech Anti-Resonance Composite material is a thermo-set polymer loaded with minerals to provide very inert, optimally-damped components. Refined by Monitor Audio’s engineers initially for the Platinum series, ARC is ideal for acoustic design, where a high degree of structural rigidity and vibration damping is required in order to prevent the propagation of standing waves and modal resonances.

Ribbon Transducer

Ribbon Transducer

Monitor Audio's proprietary ribbon tweeter design uses an ultra-thin sandwich of C-CAM alloy suspended in a powerful transverse magnetic field of high energy NeFeB rare earth magnets. The ribbon serves as both voice coil and radiating diaphragm, with every part of the ribbon driven directly and simultaneously without energy storage. Having a mass of just 18mg, its diaphragm is able to start and stop in an instant, producing a transient response capable of defining the leading edge and natural harmonic resonance of complex musical sounds. Specified to reach ultra-high frequencies up to an elusive 100 kHz, Platinum’s magical ribbon tweeter will reproduce with ease every last nuance and detail from vinyl, CD, DVD-A and SACD, together with the wider bandwidth of Blu-ray.



RDT is a unique technology developed specifically by Monitor Audio's engineers for the Platinum series of loudspeakers. Designed to reduce mass and increase cone stiffness, RDT applies ultra-thin skins of C-CAM to a core of honeycomb Nomex material, creating a structure which is extremely light but incredibly rigid. At only 40 microns thick, the C-CAM skins are half the thickness of a human hair, yet when bonded to the Nomex core they form an RDT cone, which is 150 times more rigid than a single layer of 200 micron C-CAM alloy, but has a fraction of the overall mass. These properties allow the cone to operate as a lightning-fast piston for a clearer more natural sound. The RDT cone's concave geometry has been refined by FEA analysis to provide a smooth frequency response and to eradicate break-up.

While we do our best to keep this information up to date, please be aware that all specifications are subject to change by the manufacturer at any time.

Frequency Response 52 Hz - 100 kHz
Sensitivity (1W@1M) 90 dB
Nominal Impedance 4 ohms
Maximum S.P.L (each) 117.8 dBA
Power Handling (RMS) 200 W
Recommended Amplifier Requirements (RMS) 100 - 200 W
Bass Alignment Sealed Cabinet
System Design 3-way
Mid / H.F Crossover Frequency 2400 Hz
Bass Low Pass Crossover Frequency 380 Hz
Drive Unit Compliment 2 x 6.5" long-throw RDT bass drivers
1 x 4" RDT mid-range driver
1 x C-CAM high frequency ribbon transducer
External Dimensions (with Grille) (H x W x D) 1205 x 330 x 116 mm
(47 7/16 x 13 x 4 9/16 inch)
External Dimensions (excl. Grille) (H x W x D) 1205 x 330 x 102 mm
(47 7/16 x 13 x 4 inch)
Cut Out Depth 97.5mm
(3 13/16 inch)
Weight (each) Excluding stands 25 Kg

While we do our best to keep this information up to date, please be aware that all specifications are subject to change by the manufacturer at any time.