User manual MCINTOSH XR27

[. . . ] Owner's Manual XR27 Loudspeaker System XR27 McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 FAX: 607-724-0549 WARNING - TO REDUCE RISK OF FIRE OR ELECTRICAL SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL. IMPORTANT SAFETY INSTRUCTIONS! PLEASE READ THEM BEFORE OPERATING THIS EQUIPMENT. General: 1. Warning: To reduce risk of fire or electrical shock, do not expose this equipment to rain or moisture. This unit is capable of producing high sound pressure levels. [. . . ] It has multiple front to · Patented LD/HP Technology The McIntosh Low Frequency and Midrange Loudspeaker Elements feature the patented LD/HP Magnetic Circuit Design. This design, when compared to conventional Loudspeaker Elements, reduces distortion significantly. It also increases power handling and efficiency. · Neodymium-Iron-Boron Alloy Magnets The five one inch Dome Tweeters use Neodymium-IronBoron Alloy that has a high flux density per unit of volume and helps to keep the weight to a minimum. ·Bessel Function Array The individual tweeter amplitudes and phase relationships of the five tweeter array are adjusted to act as a high frequency point source · Shielded Magnetic Field The XR27 may be used in Home Theater Installations near a television receiver or monitor without causing the television image to degrade. McIntosh has designed special shielding around the magnetic structure of the XR27 Loudspeaker Elements to prevent interference. · High Power Handling Figure 7 back internal braces to form a dampened rigid Structure. The XR27's small footprint allows for a variety of different placements in a room. The Loudspeaker Elements and Crossover Components of the XR27 are all chosen for use with powerful amplifiers up to 1, 200 watts. · Versatile Operation and Placement In additional to the regular connections, the XR27 Loudspeaker System provides separate connections for Bi-Amplification hookups. Mounting the XR27 horizontally on a wall using the supplied Bracket and Hardware. Mounting the XR27 vertically or horizontally In-Wall using the optional McIntosh CK27 which includes Brackets, Hardware and a special Loudspeaker Grille. Using the optional McIntosh ST27 Vertical Mount Floor Stand. Proceed to the desired Installation Method that follows. Installation using the Stabilizer Bar 1. Attach the rubber bumpers to the bottom long edge of the XR27 Loudspeaker System and Stabilizer Bar. Loosen, but do not remove, the four screws securing Stabilizer Bar Screws Small Rubber Bumpers Stabilizer Bar Large Rubber Bumpers Figure 11 the Stabilizer Bar to the back of the XR27 Loudspeaker System. Reposition the Stabilizer Bar with the widest side even with the long side edge of the XR27 extruded aluminum enclosure. Tighten the four screws securing the Stabilizer Bar to keep it in place, but not enough to prevent changing the angle of the XR27 in the following steps. The vertical angle of the XR27 may be Figure 12 changed ±5. 5 degrees from perpendicular, allowing the sound to be directed upwards or downwards to accommodate the seating arrangement in the room. This can be accomplished by temporarily loosening the four screws and moving the Stabilizer Bar up or Figure 13 Figure 10 7 down. When the desired angle is achieved tighten the four screws. Locate the Loudspeaker Grille and align the fastening pins to the Grommets (there are four pins on each side) on the front of the XR27. Carefully push down to secure the Grille to the Loudspeaker until it is firmly seated. Vertical On-Wall Installation The supplied On-Wall Mounting Brackets allow for two different mounting positions of the XR27 Loudspeaker relative to the wall. The first position is with the Loudspeaker close to and parallel with the wall. The second position places the Loudspeaker further away from the wall and allows for horizontal rotation of ± 30 Degrees. [. . . ] Refer to figure 19. Figure 19 10 How to Connect using a single Amplifier How to Prepare Hookup Cables The McIntosh XR27 Loudspeaker System utilizes binding posts for speaker wire connections. Prepare the Loudspeaker Hookup Cables that attach to the Power Amplifier Output Terminals: Bare wire cable ends: Carefully remove sufficient insulation from the cable ends, refer to figures 20, 21 & 22. If the cable is stranded, carefully twist the strands together as tightly as possible. Note: If desired, the twisted ends can be tinned with solder to keep the strands together and/or attach a spade lug. Connections using a single Amplifier 1. Connect a Loudspeaker cable from the Negative (-) Binding Post of the Amplifier to the XR27 LOW COMmon (-) Binding Post. [. . . ]