PLATINUM II BUILDS ON THE ADVANCES OF ITS PREDECESSOR TO  CREATE A FLAGSHIP SPEAKER RANGE OF EXTRAORDINARY CALIBRE
The Platinum II range has produced the most musical, accurate and beautiful loudspeakers Monitor Audio has ever made. Inspired by rigorous new analysis and breakthrough innovation by the engineering team, Platinum II is a potent mix of evolutionary refinement and discovery, offering genuine audiophile performance with a stunning design and materials specification. In the pursuit of ever lower distortion, no detail has been overlooked. Monitor Audio's engineers have optimized the operation of electrical, mechanical, magnetic and acoustic systems, introducing new technologies where necessary to meet ambitious performance goals. For the first time in a Monitor Audio speaker, Platinum II deploys a new MPD (Micro Pleated Diaphragm) high frequency transducer, supported by next-generation RDT®II bass and mid drivers, improved crossover design and bespoke speaker terminal designs.  Offering extraordinary audio transparency and flawless design quality, the new seven-model line-up premiers the luxury flagship PL500 II tower (seen to the right); two further floor standing models, the PL300 II and PL200 II; the PL100 II stand mount monitor; matching centre-channel speakers in two sizes: the PLC350 II and PLC150 II, and a 1400W, twin 15" subwoofer: the PLW215 II.

MPD (MICRO PLEATED DIAPHRAGM) HIGH FREQUENCY TRANSDUCER The MPD High Frequency Transducer uses an extremely thin, low-mass pleated diaphragm with a surface area eight times larger than that of a traditional dome tweeter, offering greater accuracy and efficiency. The design represents a wholesale reworking of an establish technology, introducing a greater number of diaphragm pleats while reducing plea height to eliminate the typical dip in response around 40kHz. Consequently Monitor Audio's MPD tweeter, developed through intensive testing and listening over many months, operates with uniform output to over 100kHz and therefore qualifies as an entirely new and proprietary drive unit application.  RDT II BASS AND MIDRANGE DRIVERS RDT II is a composite 'sandwich' structure made from ultra-thin low mass skins, bonded to a honeycomb Nomex® core material. Unlike the original RDT construction for Platinum I, which used two C-CAM® skins, RDT II employs C-CAM for the front skin, while the rear skin is made from a woven carbon fibre material. Monitor Audio's engineers discovered that the new structure reduces distortion by over 8dB above 300Hz, which makes RDT II the lowest distortion cone technology in Monitor Audio's history. The new RDT II diaphragms have a shallower 'dished' profile formed without a centre hole to create a radiating surface of greater strength and structural integrity. The voice coil and motor sit behind the cone, producing more efficient excursions, lower distortion and a wider response. NEW PATENTED 'DCF' MECHANISM Monitor Audio's engineers have reduced distortion at the upper end of each driver's range by coupling the voice coil with the cone using a nylon ring in place of rigid aluminum. This 'Dynamic Coupling Filter' acts as a 'solid' part up to the crossover frequency, faithfully transmitting the motion of the voice coil directly to the cone. Above the crossover frequency it acts like a damping spring, reducing the transmission of energy between the voice coil and cone. The DCF mechanism effectively adds an additional mechanical filter to help the crossover, reducing output above the crossover frequency by 18dB per octave.  UNDERHUNG, EDGE-WOUND VOICE COILS All Platinum II drivers have been designed using 'underhung' voice coils, which ensure that even at extreme excursions , the coil remains within the gap, converting all the electrical energy into movement and resulting in greater efficiency and driver linearity. The new edge-wound coil design packs more copper into the shortest space to maximize driver excursion, which has increased by up to 15% over a standard round wire design. IMPROVED CROSSOVER DESIGN Crossovers have been completely re-developed using air core inductors in midrange / tweeter sections and laminated steel cores for bass sections. Custom made audiophile grade metallised polypropylene capacitors are selected to operate within a 1% tolerance for the best possible sound quality. Platinum II speakers are internally wired using Monitor Audio's 'Pureflow' silver-plated OFC copper cable, selected for its audio purity and high conductivity.  BESPOKE TERMINALS Platinum II's bespoke speaker terminal design is precision milled from solid copper with Rhodium plated conductor parts. Rhodium is favored for its excellent electrical conductivity and resistance to oxidization. Terminals are designed to accept a spade, 4mm banana plug or bare wire, up to a diameter of 4mm.  OPTIMIZED MECHANICAL DESIGN Platinum II shares many of the innovations introduced by Platinum I to reduce cabinet coloration. These include bolt-through drivers, ARC (Anti-Resonance Composite) for midrange (Tapered Line Enclosure) housings and baffle components, super-fast HiVe®II reflex ports, and a multi-layer cabinet construction, curved internally and externally.  AESTHETIC DESIGN For the finish, natural wood veneers in Santos Rosewood or Natural Ebony are pair-matched, applied and hand-coated with eleven layers of clear gloss piano lacquer, polished to reveal the glowing lustre in the grain. Platinum II models are also available in a penetrating piano black gloss lacquer, which will offer a luxurious contract with room décor. The front baffles are hand-upholstered with the very highest quality Inglestone leather supplied by Andrew Muirhead. Such is the level of care lavished on the Platinum II enclosures that each requires as many as 144 hours to complete. 

The Platinum Range PL100 II MSRP: $5,795 /pair Compact 2-way monitor design using a single 6.5" RDT II bass-mid driver, and an MPD high frequency transducer. Bespoke floor stand available separately. PL200 II MSRP: $11,495 /pair Compact 3-way / 4 driver floorstanding system using dual 6.5" RDT II long-throw bass drivers, a 4" RDT II midrange driver in a sealed TLE enclosure and an MPD high frequency transducer. PL300 II MSRP: $14,495 /pair 3-way / 4 driver tower system using dual 8" RDT II long-throw bass drivers, a 4" RDT II midrange driver in a sealed TLE enclosure and an MPD high frequency transducer. PL500 II MSRP: $28,995 /pair Flagship 3-way / 4 driver tower system using four 8" RDT II long-throw bass drivers and dual 4" RDT II TLE-loaded midrange drivers in an M-T-M configuration with the MPD high frequency transducer. PLC150 II MSRP: $3,995 each A 2.5-way / 3 driver centre-channel system matching the PL100 II and PL200 II models, using a single 6.5" RDT II bass driver, a single 6.5" RDT II bass-mid driver and an MPD high frequency transducer. Bespoke floor stand available separately. PLC350 II MSRP: $5,795 each A 3-way / 4 driver centre-channel system matching the PL300 II and PL500 II models, using dual 8" RDT II bass drivers, a single 4" RDT II midrange driver and an MPD high frequency transducer, Bespoke floor stand available separately. PLW215 II MSRP: $6,995 each A sealed dual 15" active subwoofer system featuring opposing individually powered C-CAM drivers. Features 1400W continuous power and 2000W peak power, a 172 MHz DSP Core, 4 fully configurable user presets, auto room EQ per preset from panel or via PC/tablet through proprietary SubConnect App, LED display and night mode.