Assessments - 2, GPA: 4.5
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Polski>0.5m >0.5m>1.5m . . . CDM™7SE Owner’s manual English ..........................................1 Deutsch.........................................2 Nederlands..................................3 Italiano .........................................4 Espanol.........................................6 Portugues......................................7 Francais........................................8 .........................................10 .........................................11 ....... .................................12 ..........................................13 ....................................14 Magyar......................................16 GB Introduction Thank you for purchasing B&W CDM™7SE speakers. Since its foundation in 1966, the continuing philosophy of B&W has been the quest for perfect sound reproduction. Inspired by the company’s founder, the late John Bowers, this quest has entailed not only high investment in audio technology and innovation but also an abiding appreciation of music to ensure that the technology is put to maximum effect. It is also our policy to make sure the advanced features pioneered on one product are incorporated into others we manufacture. CDM™ systems have cabinets with contoured edges to reduce sound diffraction (the reradiation of sound waves from sharp edges that interfere with and blur the direct sound from the drive units),incorporating woven Kevlar® cone bass/midrange drive units for lowest coloration and maximum definition. They also have alloy dome tweeters with magnetic fluid cooling to ensure good definition to the limits of audibility and maintain dynamics to high sound levels. Additionally, the tweeter is free space mounted to improve the spaciousness of the stereo image. All these features were originally developed for the acclaimed B&W800 Series systems and go towards the realisation of fine transducers. However, no matter how good the speakers themselves, they must work well into the listening room and time spent on the installation process will reap the reward of many hours listening pleasure. Please read through this manual fully. It will help you optimise the performance of your audio system. B&W distribute to over 50 countries world-wide and maintain a network of dedicated distributors who will be able to help should you have any problems your dealer cannot resolve. Unpacking (figure 1) • Fold the top carton flaps right back and invert the carton and contents. • Lift the carton clear of the contents. • Remove the inner packing from the product. • 4 spike feet and 4 lock nuts are taped in recesses in one polystyrene end tray. • Please retain the packaging for future use. CDM™7SE speakers are supplied in veneer matched pairs. Check that your speakers have consecutive serial numbers. Connections (figures 2 & 3) All connections should be made with the equipment turned off. There are two pairs of gold plated terminals at the back of each speaker, one pair to the bass- mid units and one pair to the tweeter which permit bi-wiring or bi-amplification if desired. On delivery, both pairs are connected together by high-quality gold plated copper links for use with a single twin cable. The terminals accept bare wires. For single cable connection, connect either of the positive terminals on the speaker (marked + and coloured red) to the positive terminal on the power amplifier and negative (–,black) to negative (figure 2). Failure to observe correct polarity will result in poor sound balance and image focusing. When bi-wiring the speakers, loosen the terminal caps and remove the links. Use a separate twin cable from the amplifier terminals to each pair of speaker terminals (figure 3). Correct polarity connection is even more critical in this case to maintain the frequency response of each speaker as well as the correct balance between left and right speakers. The use of separate cables can improve the reproduction of low-level detail by reducing interaction in the crossover and allowing optimum choice of cable for each frequency range. Always make sure all the terminal caps are screwed down tight, as otherwise they may rattle. When choosing cable, keep the total electrical impedance (out and back) below the maximum recommended in the specification. In particular, the cable to the tweeter should have low inductance, otherwise the very high frequencies will be attenuated. Ask your dealer for advice, as the optimum cable will depend on the length required. Positioning (figure 4) Some experimentation with the position of the speakers is well worthwhile to optimise the interaction between them and the listening room. However, as an initial guide: • Do not fit the spike feet until you have found the best position for the speakers. • Place the speakers and the centre of the listening area approximately at the corners of an equilateral triangle. • Keep the speakers at least 1.5m (5ft) apart to maintain left-right stereo separation. • Keep the speaker baffles a...