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Fotos y especificaciones Bowers & Wilkins 803S |
Resumen del manual
The relay in the speaker needs a certain amount of current to operate, so check the specification of your processor first before proceeding. You will need to draw 45mA for each speaker you want to switch. The relay in the speaker only works when the manual switch is set to the monopole (•) position. If there is no voltage to the trigger input, the speaker stays monopole. If a 12V DC signal is present, the relay overrides the manual monopole setting and switches the speaker to dipole mode. If you have the switch set to the dipole (••) position, the trigger feature will not work. f Continue to section 5. FINE TUNING Before fine tuning, double check that all the connections in the installation are correct and secure. Floor- and stand-mount speakers only Moving the speakers further from the walls will reduce the general level of bass. Space behind the speakers also helps to create an impression of depth. Conversely, moving the speakers closer to the walls will increase the level of bass. 803D, 803S, 804S, 805S, HTM1D, HTM2D, HTM4S, SCMS only These vented-box systems are supplied with foam plugs fitted in the ports. Normally, the speakers should be used with these plugs removed for maximum bass output, but if the bass is too heavy due to room effects and you cannot move the speakers further from the walls, refit the plugs to reduce the bass output. (figure 37) If the bass is uneven with frequency, it is usually due to the excitation of resonance modes in the room Even small changes in the position of the speakers or the listeners can have a profound effect on how these resonances affect the sound. Try positioning the speakers along a different wall. Even moving large pieces of furniture can have an effect. For the most discerning listening, remove bass and midrange grilles as described in section 8 – Aftercare. Tweeter diaphragms are very delicate and easily damaged. The tweeter grilles are held in place with magnetism and any mishandling of the grille close to the tweeter may result in the grille being attracted into the tweeter diaphragm. For these reasons, we recommend that you leave tweeter grilles in place. 800D, 801D, 802D, HTM1D only If you use these systems without the midrange grille, replace the plastic centre plug of the midrange drive unit with the solid aluminium plug in the accessory pack. Simply unscrew the fitted plug and screw in the replacement. Hand tighten only. (figure 38) If the sound is too harsh, increase the amount of soft furnishing in the room (for example, use heavier curtains), or reduce it if the sound is dull and lifeless. Test for flutter echoes by clapping your hands and listening for rapid repetitions. Reduce them by the use of irregular shaped surfaces such as bookshelves and large pieces of furniture. DS8S only In monopole mode, the high-frequency output level may be adjusted using the top toggle switch on the front baffle. (figure 39) In the centre 0 position, the system response is nominally flat. The + position gives more output, which may be required, for example, if the acoustic of the room is dull, if circumstances dictate that the speakers have to be placed more off line than recommended, or if the speaker is built into custom furniture and placed behind fabric that is more absorbent than that on the grilles supplied. Conversely, the – position reduces the level for when the room acoustic is too bright or if you want to reduce your awareness of the speakers' location. Experiment to find the mode settings best suited to your requirements. Typical combinations are: • All surround speakers monopole. • Side speakers dipole, rear speakers monopole. • All surround speakers dipole. It would be unusual, but not impossible, to set side speakers to monopole and rear speakers to dipole. 6 RUNNING IN The performance of the speaker will change subtly during the initial listening period. If the speaker has been stored in a cold environment, the damping compounds and suspension materials will take some time to recover...
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