Monitor Audio Gold Series GX300 

Pair of Floor Standing Speakers in Piano Ebony

Standing at over three feet tall the GX300 is a majestic three-way floor-standing loudspeaker comprising twin 6.5” bass drivers, a single 4” mid-range driver and a high frequency ribbon transducer. With such an impressive complement of drivers, the GX300 has the power delivery and scale required to fill the largest rooms with jaw-dropping dynamics as well as the finest musical detail. Extending from below 30Hz to over 60kHz, its frequency range is among the widest available from any speaker, irrespective of price. Sublime fidelity, peerless build quality and exquisite design distinguish the GX300 as a future classic.

• New C-CAM® ribbon transducer design – providing extension to a class leading 60KHz
• HiVe® port technology for better transient response and tighter bass
• Single bolt through driver fixings for improved bracing, rigidity and driver/baffle de-coupling
• Die-cast alloy terminal panel arrangement with high quality bi-wire terminals and high end spade type link cables
• Pureflow® Silver internal cabling
• Selected premium quality wood veneers or high gloss piano finishes.
• Rigid 20mm MDF construction throughout, employing radial and cross-bracing techniques for high rigidity resulting in low cabinet colouration
• Invisible magnetic grille fixing provides clean visual styling when used with the grille off

Specifications

• System Format: 3 Way
• Frequency Response: 30 Hz - 60 kHz
• Sensitivity (1W@1M): 90 dB
• Nominal Impedance: 8 ohms
• Maximum S.P.L (Per pair in room): 116.8 dBA
• Power Handling (RMS): 200 W
• Recommended Amplifier Requirements (RMS): 100 - 200 W
• Bass Alignment: Bass reflex. HiVe port system
• Crossover Frequency: L.F - M.F: 790 Hz, M.F - H.F: 2.3 kHz
• Drive Unit Compliment: 2 x 6.5" RST bass driver, 1 x 4" RST mid-range driver, 1 x C-CAM H.F ribbon transducer
• External Dimensions excl Stand (H x W x D) 1060 x 210 x 330 mm (41 3/4 x 8 1/4 x 13 inch)
• Weight (each): 27.2 Kg (59.9 lbs)

Technology

C-Cam Bass Drivers: Refined over many years by Monitor Audio, Ceramic-Coated Aluminium/Magnesium is used as a driver cone material for all our speaker designs from the mid-market models up. Originally developed by the aerospace industry for jet engine components, C-CAM's properties are ideal for loudspeaker cones being extremely rigid, yet light enough to yield high overall efficiency. C-CAMbass drivers are able to resist the bending distortion imposed by sudden and extreme bass excursions to reproduce very clean, deep and dynamic bass frequencies. Conventional cone materials are more likely to flex in operation, producing a significant level of audible distortion.

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.

HiVe II Port Technology: A new type of port technology which uses a straight rifled design to accelerate air flow and reduce turbulence. HiVe II technology has the ability to move air in and out much quicker than a conventional port, the result is fast powerful bass coupled with superior transient response.

C-Cam Drivers: Ceramic-Coated Aluminium/Magnesium is a material originally developed by the aerospace industry for jet engine components. Its properties are ideal for loudspeaker cones being extremely rigid, yet light enough to yield high overall efficiency. In manufacture, aluminium/magnesium alloy undergoes a three-stage stress-relieving process to remove surface deformation and molecular weakness. Once formed, the alloy cone is subjected to a high temperature anodic coating process in which a layer of pure ceramic alumina is depleted onto its surfaces to a depth of 50 microns, producing a completely rigid sandwich of alloy and heat-dissipating ceramic material.

Conventional cones are liable to flex or twist in operation, producing a significant level of audible distortion. C-CAM cones have a much higher resistance to bending stress and therefore exhibit much greater fidelity over their entire operating range. C-CAMtweeters and woofers share an audible consistency producing a smooth transition of frequencies and a sense of realism and cohesion in the soundstage.

RST: The Rigid Surface Technology (RST) cone profile is inspired by the Japanese art of Origami, which demonstrates how a very light material (like paper) can be strengthened and made more rigid by making small and precise folds on its surface.Monitor Audio has applied this principle in designing the CAM/RST cones for the GXand RX ranges. Developed and perfected using sophisticated computer modelling (Finite Element Analysis), the GX mid and bass driver cones have been strengthened by a series of radial ribs; the RX driver cones by a pattern of dimples. Our simulations have proved that RST significantly increases cone rigidity, allowing the radiating surfaces to resist mechanical bending forces, which can twist the shape of conventional driver cones to produce distorted sound. The strengthening effect ofRST means that we can use thinner, lighter and more responsive C-CAM cones, which provide speed and accuracy while offering greatly reduced distortion. The RSTpatterns also help to displace standing waves that can propagate on the cone's surface.