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Resumen del manual
This greatly helps to break up the regular internal cabinet votumo that would otherwise oncourage coloration from internal standing waves Homogeneous fibre cone basi/mldrangc drive units are used for minimum coloration and maximum definition The DM308 also features a soft dome tweeter with rr.agnotrc fluid cooiing to ensure 9000 definition to the limits of audibility and maintain dynamics to high sound levois 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 ot many hours listening pleasure Please read through this manual fully II will help you optimise the performance of your audio system BiW distribute lo over 50 countries world-wide and maintain a neiwork of dodicntcd distributors who wilt be ablo to holp should you havo any problems your dea'or cannot resolve UNPACKING (figure \) Fold the top carton flaps rignt back and invert tho carton and contonts. Lift the carton clear of the contents Remove the Inner packing from the product •t spike leet and 4 loc* nuts are taped m recesses in one polystyrene end fray Wo suggest you retain the packaging for future use CONNECTIONS (i.gu.c 2) All connections should be mace with the eqmpmont turned otl Connect the positive terminal on the speaker (marked • and colourod red) to the positive terminal on the power amplifier and negative (• blac*) to negative (figure 2) Failure to observe correct polarity will lesult in poor sound balance and image focusing Always make sure all the terminal caps are screwed down tight, as otherwise they may rattlo When choosing cable, keep the total olocfticol impodance (out and back) below the maximum recommended in (he »pectlicafion. In particular, the cable should have low inductance, otherwise the very high frequencies will be attonuaieo Ask your dealer lor advice, as the optimum coble will depend on the length required POSITIONING (figure 3) Some experimentation with the position of the speakers is well worthwhile to optrmiso the interaction between them and the listening room However, as an initial guide Do not fit the 6pike feet until you have found the best position for the speakers Place me speakers and the centre of the listening area approximately at the corncrs of an oquilatcral triangle. Keep the speakers at least 1 5m (5tt) apart to maintain lett-rignt stereo separation Keep the speaker baffles at least 0.5m (20in| clear of walls Having the speakers too close to walls Increases the level of bass relative to the midrange and may gtva a boomy quality lo Ihe sound WARNING The DM308 produces a static magnetic field that extends outside the cabinet boundBry A* such The DM308 should not bo placed within 0 5m (?0in) of equipment mat moy be affected by such a field, e.g Cathode Ray Tubes In TVs and Personal Computers FINE TUNING Before fine tuning the installation, double check the polarity and security of the connections It the level of bass is uneven with frequency, this is usually due to strong excitation of resonance modes in ihe room Even small changes in the position of the speakers within the listening room can have a profound effect on the perceived sound quality by altering the excitation of these modes. Try mounting the speakers along a different wall. Even moving large pieces of furniture about can have an effect If the general ovol of bass is too high, try moving the speakers further away from the walls Conversely, if you need more bass, movo the speakers dosor to the walls. Spoce benind me speakor» atso improves tho impression ot perspective on well recorded material ll the central Image is poor :ry moving the spcakors closer together ot tooing them in so they point at or just m front ot the listening area (figuro 4). If the sound is too harsh, increase me amount of soft furnishing in me room For example use heavier curtains Conversely reduce the amount of soft furnishing if the sound is dull and iifeless Test for Rutter echoes by clapping your hands and listening for rapid repetitions. These can smear the sound, but may be reduced by Irregular shaped surfaces such bb bookshelves and large pieces of furniture Ensure tho speakers stand firmly on tho floor Whonovor possible fit tho spike feet supplied after you have optimised the positioning. These are designod to pierce through carpeting lo fhe floor surface Initially, screw Ihe lock nuts fully onlo the spikes and 3crew the spikes fully into Ihe threaded inserts in the base of the cabinet if the cabinet rocks, unscrew Ihe two spikes that do not touch the floor equally until me cabinet sits firmly on the floor, and lock them in place by tightening the lock nuts against the cabinet If there is no carpot and you wish to avoid scratching the lioor surface use a protective disc botween me spiko and the floor AFTERCARE Tho vinyl veneerB normally only require dusting If you wish to use an aerosol cleanar remove the grille first by gently...