User manual QUAD ESL 57

[. . . ] Comply with all warning labels and instructions. Do not attempt the installation of this equipment unless you are qualified to do so. Protect your hearing from high sound pressure levels. Product Descriptions: Arena Models Product Features Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] 04 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 04 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 05 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 05 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 05 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 06 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 07 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 08 . . . . . . . . . . . . . . . . . . . . . . . . . . . . BACK COVER Connections: Low Impedance Connections Impedance Charts 70/100V Connections Rigging and Suspension The rigging, suspension or mounting of these products can expose the installer and members of the public to serious health risks and even death. UNDER OR FULLY LOCAL, SAFETY PROPERLY NO CIRCUMSTANCES MOUNT AND AND THIS ATTEMPT EQUIPMENT TO DO TO SO IF RIG, BY ALL YOU OF FOR SUSPEND YOU ARE RELEVANT RELEVANT ARE NOT PERTINENT ADVICE CE Compliance: Statement OTHERWISE QUALIFIED STATE UNLESS CERTIFIED NATIONAL BE DO Dimension Drawings: All Arena Models Specifications AUTHORITIES. NOT KNOW PERSONNEL REGULATIONS QUALIFIED MUST OR Contact Information: QUAD Industrial Contact Information REGULATIONS, AND ASSISTANCE. CONSULT QUALIFIED Limited Liability QUAD Industrial assumes no liability whatsoever for any damage or loss, either direct or consequential arising from the installation and use of these products. NOTE: Please ensure that you are familiar with all of the mounting hardware and that you possess the needed experience and certification in rigging before begining the installation. QT-250 The QT-250 is a high power constant-voltage line matching transformer designed to adapt the high-powered Arena low-impedance models to constant-voltage operation. Power taps are provided at 250/125/60/30 Watts into 70V or 100V line with secondary impedances of 4 or 8. · QT-250 ­ 250 Watt 70/100V Line matching transformer I N S TA L L AT I O N Arena speaker models are designed to be suspended by means of the four welded steel suspension points on the rear of the enclosure. Proper suspension requires the use of all four points for even weight distribution and safety. Other installation schemes are possible with third-party accessories and enclosures. Consult with your local distributor or QUAD Industrial directly for further information. NOTE: Suspend speakers using Aircraft cable FULL GRILLE 6, 8 & 10 Select the appropriate FULL GRILLE model for applications where Arena speakers require a square grille in place of the round grille supplied. · FULL GRILLE-6 ­ Round, painted, White replacement grille for Arena 6 FULL GRILLE-8 ­ Round, painted, White replacement grille for Arena 8 FULL GRILLE-10, 12 & 15 ­ Square, painted, White replacement grille for Arena 10, Arena 12 and Arena 15 · · 4 CONNEC TION & OPER ATI O N Low Impedance (16) Connections Low impedance models are fitted with two terminals for the (+) and (-) incoming amplifier feed. Speakers may be wired in parallel as shown below. Ensure that the total impedance of connected speakers does not fall below the minimum impedance of the connected amplifier. [. . . ] Ensure that the total impedance of connected speakers does not fall below the minimum impedance of the connected amplifier. The following table shows the net impedance when several speakers (16) are combined in parallel. No. of Speakers in Parallel 2 3 4 5 6 7 8 Combined Impedance 70/100V Connections 70/100V Models use one terminal for the Common (-) connection and the other three terminals for the transformer power taps. NOTE: Power taps are labeled for 70V operation. [. . . ]