Quad L2 Sub Brochure
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Philosophy Quad has, since the 1950s, led the field in loudspeaker development. The famous Quad electrostatics are now, quite rightly, regarded amongst the very finest loudspeakers money can buy. With a fifty strong R&D team, our research into acoustics and reproduction leads the field in development of quality hi fi equipment. British design and engineering coupled with the industrys most efficient manufacturing facility combine to create products unequalled in terms of value and performance. Our philosophy is simple that of producing the closest approach to the original sound…. Our philosophy is based upon a belief that hi fi should add nothing nor remove anything from a recording merely reproduce it. The resulting sound should be without artefacts, distortion, colouration and truly revealing of the recording process. Buying a first Quad system is often a revelation to customers. Although neither artificially impressive nor imposing, it will produce a natural performance and an ease of listening that is captivating from the start. Quad products are sometimes seen as the kind of products bought at the end of a journey through hi fi; we believe they mark the beginning. The Quad
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Technology L2 Series Designing loudspeakers is still very much an art form, yet modern materials and components allow us to push the performance envelope further than ever before. Neodymium magnets are used in the L 2 tweeters. These are a form of rare earth super magnet. Because they are so strong and small, when properly employed, they create a very concentrated magnetic field ideal for the small excursions required for a good high frequency response. Whilst most moving coil tweeters use copper voice coils, we have developed for the L 2 series a new wound aluminium alloy voice coil capable of higher power handling that the copper equivalent, with better thermal stability and a wider bandwidth. This is largely responsible for the improvements to detail and resolution over the original L series. A good bass driver chassis design is essential for smooth mid range. A poor chassis creates reflections from the cone movement that are passed back through the cone and cause a temporal smearing effect, akin to ghosting of a television signal. At Quad, we are fortunate as we have the capability of designing and manufacturing any chassis structure. With our own tool shop, die casting machines, and drive unit assembly plant, we can control the complete process from design to manufacture. The L 2 series uses a new low profile version of the 4 arc driver chassis used in the original L series. While the same curved, self bracing design is used, all the legs are now profiled and narrowed to minimise cone reflections. The audiophile grade crossover is carefully orientated to minimise magnetic induction and, on bookshelf models, we have added our unique twin port arrangement (designed to reduce distortion by up to 50%). Technical Improvements Metallised Polypropylene low loss capacitors are used in an audiophile grade crossover. All components are mounted on glass fibre PCBs with non interlacing tracks. Perfect layer, air cored inductors are used, mounted cross axially to preventmagnetic intermodulation. Internal bracing is applied to even the bookshelf models now, designed specifically to randomise the internal reflections and cause rapid dissipation of internal standing waves for a clean, fast bass response.