User manual MARTIN AUDIO W8VDQ

[. . . ] Each Martin Audio W8VDQ loudspeaker is built to the highest standard and thoroughly inspected before it leaves the factory. After unpacking the system, examine it carefully for any signs of transit damage and inform your dealer if any such damage is found. We suggest that you retain the original packaging so that the system can be repacked at a future date if necessary. [. . . ] b) Fit the yoke arms to the yoke before bolting them to the W8VDQ. Ready to fit dome nut & thumbwheel All material © 2008. Subject to change without notice. Dome nut & thumbwheel fitted c) Remove the yoke mounting bolts (see earlier) from the W8VDQ cabinet and fit the yoke assembly. Note that the yoke arm follows the W8VDQ front curvature All material © 2008. Subject to change without notice. The yoke may be turned upside down for an alternative tilt angle range. . . Alternative orientation 4 Aiming for best coverage The W8VDQ is designed for medium coverage ­ up to 25m distance x 100deg (120deg in the nearfield). Height The W8VDQ should always be mounted so that the bottom/foot is about 1m above near-field listener headheight (or 1m above front balcony listener level when used for a balcony fill) for the differential coverage to work correctly. Nearfield attenuation Note that the rear panel attenuation switch may be switched to -3dB if the nearfield audience is particularly close. Nearfield attenuation switch All material © 2008. Subject to change without notice. Aiming The W8VDQ can cover approximately 30deg vertically. The easiest way to set the tilt angle for maximum rear audience level is to aim the top section of the grille straight towards the furthest seat. See Maximum level to farfield line below. . . Note that the W8VDQ's differential dispersion does not allow vertical arraying or stacking. The Martin Audio W8LM line array system provides optimal vertical coupling for vertical array applications. Horizontal arraying (up to 60-100deg between W8VDQs) is possible. 5 Amplification & Control Choosing a power amplifier Martin Audio loudspeakers are capable of recreating musical dynamics accurately and with incredible impact if powered correctly. Martin Audio loudspeaker power ratings are quoted for AES power - a longterm average power rating, and Peak power ­ a short-term burst capability. Moving coil loudspeakers can be run up to their AES power rating continuously and up to the higher Peak power rating for transient musical peaks. 1) 2) 3) Choose an amplifier with a power capability approaching 3200W into 6ohms. For spectral balance, set your amplifiers to the same voltage gain throughout the system. If you use Crown amplifiers without a 32dB setting, set them to their 26dB (x20) standard and increase the recommended limiter thresholds by 6dB ­ making sure you double-check the amplifier gain setting before running the system at high level. Always check the amplifier gain settings ­ these are usually on the rear panel. [. . . ] The table below gives an indication of the maximum permissible cable runs for various conductor cross-sectional areas. 8 Warranty Martin Audio ceiling loudspeaker products are warranted against manufacturing defects in materials or craftsmanship over a period of 5 years from the date of original purchase. During the warranty period Martin Audio will, at its discretion, either repair or replace products which prove to be defective provided that the product is returned in its original packaging, shipping prepaid, to an authorised Martin Audio service agent or distributor. cannot be held responsible for defects caused by unauthorised modifications, improper use, negligence, exposure to inclement weather conditions, act of God or accident, or any use of this product that is not in accordance with the instructions provided by Martin Audio. [. . . ]