Monitor Audio Platinum C250 3G Centre Speaker




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The Platinum C250 3G presents a powerfully detailed performance, while being easy to position for the creation of the ultimate Platinum Series 3G home theatre system. It benefits from the latest MPD III transducer, 2.5” RDT III mid-range driver, and twin 6” RDT III bass drivers, which combine to increase directivity and dynamic range. It’s designed to deliver increased performance in a more compact cabinet arrangement then previous models (it actually replaces two models, the C150 2G and C350 2G), and when placed at the centre of a home theatre system, the Platinum C250 3G’s impact and ability to propel a listener to the very heart of the action is undeniable.

Monitor Audio Platinum C250 3G Centre Speaker

Platinum 3G - Objects of desire

Platinum Series 3G is a culmination of ground-breaking acoustic innovations brought together in a number of expertly crafted designs that celebrate the rich legacy of the Platinum Series. The range cements Monitor Audio’s deserved place within the high-end, premium loudspeaker space and represents a purity of sound and design beautifully entwined – the launch, a highpoint in the brands 50th Anniversary.

Elegant construction

Platinum Series has always represented Monitor Audio’s engineering and design prowess and the 3rd generation is no exception. Our UK-based design team worked closely with our acoustic engineers to deliver an aesthetic that celebrates the high-performance components without overpowering its surroundings.

The cabinet design on Platinum Series 3G is all new. Beautifully detailed and expertly crafted, our industry-leading attention to detail and passion for quality ensures that each cabinet is elegant and refined on the eyes, while being engineered for total acoustic performance.

Constructed using laminated layers of MDF to form a curved and braced super rigid 18-21mm cabinet on the rear with a 36mm thick baffle precision machined to create a unique curved front profile. The cabinets are then embellished with etched inlays to highlight the craftsmanship, before 16 layers of lacquer are added on top to create a beautiful, luxury piano gloss finish. A pure satin matte finish is applied to models finished in white - a contemporary statement in any interior.

'Concept 50 technology'

Platinum Series 3G builds on two generations of loudspeaker design, which has consistently evolved at each step. New MPD III high frequency transducer helps to reduce distortion and flatten the frequency response leading to a clear and consistent sound across all your music.

The Rigid Diaphragm Technology III (RDT III) cone has three new optimisations over its predecessor. Firstly, a new rear layer featuring two uniform layers of carbon fibre skin helps reduce cone breakup, as does an optimised rubber surround. Finally, a cone edge treatment extends the passband of the drivers. When combined, these innovations significantly increase the useable bandwidth, enabling improvements to the crossover and final response of the speaker. The result: Platinum 3G mid and bass drivers boast the lowest distortion of any Monitor Audio speaker in its history.


Monitor Audio Platinum C250 3G Centre Speaker


Platinum II offers you genuine audiophile performance with stunning design and materials specification.

In the pursuit of ever lower distortion, no detail has been overlooked. Through meticulous FEA modelling, we’ve optimised the operation of electrical, mechanical, magnetic and acoustic systems, introducing new discoveries to meet ambitious performance goals.

The Platinum II range deploys an enhanced generation of RDT bass and mid-drivers, and for the first time in a Monitor Audio product, the MPD (Micro Pleated Diaphragm) high-frequency Transducer.

Including improved crossover and speaker terminal designs together with proprietary ARC, TLE, HiVe II technologies, Platinum II builds on the award-winning advances of over forty years to create a high-end speaker range that is utterly faithful to the source.


  • 1 x MPD III high-frequency transducer for a larger, clearer, and more lifelike sound
  • 1 x 3” RDT III mid-range driver for incredible levels of clarity
  • 2 x 6” RDT III bass drivers for exceptional scale and depth
  • The ultimate centre channel for the ultimate Platinum Series 3G theatre system
  • Sealed cabinet configuration for in-cabinet or close to wall placement
  • Perfect for high performance hi-fi systems or home theatre
  • Cabinets are embellished with etched inlays to highlight the craftsmanship
  • Choice of three high-quality, elegant finishes: Piano Black, Piano Ebony and Pure Satin White

System Format: 3-Way
Frequency Response, Free-Field (-6dB): 48 Hz – 60 kHz
Frequency Response, In-Room (-6dB): 30 Hz – 60 kHz
Sensitivity (2.83 Vrms @ 1m, Free-Field): 88 dB
Nominal Impedance: 4 Ohms
Minimum Impedance (20 Hz to 20 kHz): 4.0 Ohms @ 2.5 kHz
Continuous Power Handling (RMS into 4 Ohms, Pink Noise with 6dB Crest Factor): 300 W
Recommended Amplifier Power (RMS into 4 Ohm, Music Signal): 150-600 W
Bass Alignment: Sealed
Port Tuning Frequency: N/A
Crossover Frequency: LF/MF: 850 Hz, MF/HF: 3.5 kHz
Drive Unit Complement: 2 x 6" RDT III bass driver, 1 x 2.5" RDT III mid-range driver, 1 x MPD III tweeter​
External Dimensions including Trims, Terminals & Outrigger Feet & Spikes (H x W x D): 225 x 630 x 325 mm
Weight (each): 25.4 kg

Due to the bespoke nature of our high-end music systems this product is not available to be purchased online. Please contact us for personalized service from one of our team of experts.