McIntosh XRT 28 Owners Manual

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2 IMPOR T ANT SAFETY INSTRUCTIONS! PLEASE READ THEM BEFORE OPERATING THIS EQUIPMENT.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. 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this apparatus near water. 6. Clean only with a dry cloth. 7. 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 pres- sure levels. Continued exposure to high sound pressure levels can cause permanent hearing im- pairment or loss. User caution is advised and ear protection is recommended when playing at high volumes. 8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. 9. Protect the connection cables from being walked on or pinched particularly at the point where they exit from the apparatus. 10. Only use attachments/accessories specified by the manufacturer. 11. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/ apparatus combination to avoid injury from tip- over.12. Disconnect this apparatus during lightning storms or when unused for long periods of time. 13. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, liquid has been spilled or objects have fallen onto the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped. 14. Do not expose this equipment to dripping or splashing and ensure that no objects filled with liquids, such as vases, are placed on the equipment.

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3 Customer Service Technical Assistance Please Take A Moment Thank You Copyright 2003 © by McIntosh Laboratory, Inc. The serial number, purchase date and McIntosh Dealer name are important to you for possible insurance claim or future service. The spaces below have been provided for you to record that information: Your decision to own this McIntosh XRT28 Loudspeaker System ranks you at the very top among discriminating music listeners. You now have The Best. The McIntosh dedication to Quality, is assurance that you will receive many years of musical enjoyment from this unit. Please take a short time to read the information in this manual. We want you to be as familiar as possible with all the features and functions of your new McIntosh. Serial Number: Purchase Date: Dealer Name: If it is determined that your McIntosh product is in need of repair, you can return it to your Dealer. You can also return it to the McIntosh Laboratory Service Department. For as- sistance on factory repair return procedure, contact the McIntosh Service Department at: McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903 Phone: 607-723-3515 Fax: 607-723-1917 If at any time you have questions about your McIntosh product, contact your McIntosh Dealer who is familiar with your McIntosh equipment and any other brands that may be part of your system. If you or your Dealer wish ad- ditional help concerning a suspected problem, you can re- ceive technical assistance for all McIntosh products at: McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903 Phone: 607-723-1545 Fax: 607-723-3636Safety Instructions............................................................. 2 Thank You and Please Take a Moment............................. 3 Technical Assistance and Customer Service..................... 3 Table of Contents and Important Information ................... 3 Introduction....................................................................... 4 Performance Features........................................................ 5 Dimensions........................................................................ 6 Installation using the Column Base.................................. 8 How to Connect using a single amplifier........................ 10 How to Connect using two amplifiers............................. 12 How to Connect using three amplifiers........................... 14 Specifications.................................................................. 18 Packing Instruction.......................................................... 19 Table of Contents Important Information Caution: The XRT28 Loudspeaker System weight is 139.5 pounds (63.4kg). It requires two or more persons to safely handle when moving. 1. Loudspeaker Cables of adequate size are important to ensure that there will be no significant power loss or heating. Cable size is specified in Gauge numbers or AWG (American Wire Gauge). The smaller the Gauge number, the larger the wire size: If the Loudspeaker Cables are 25 feet (7.62m) or less, use at least 18 Gauge (AWG) wire size or larger. If the Loudspeaker Cables are 50 feet (38.1m) or less, use at least 14 Gauge (AWG) wire size or larger. If the Loudspeaker Cables are 100 feet (76.2m) or less, use at least 12 Gauge (AWG) wire size or larger. The Loudspeaker Connection Terminals can accept up to 12 Gauge (AWG) wire. 2. For additional connection information, refer to the owners manual(s) for any component(s) connected to the XRT28 Loudspeaker. 3. The XRT28s built-in speaker protection incorporates five automatic resetting solid-state devices in the crossover network. One protects the tweeters, one for the midranges and three for the woofers. The protection allows a certain amount of overdrive but extended periods will trigger protection. If an obvious lack of high, mid or low frequencies is noticed, the Protection Device may have activated. These devices will automatically reset when the volume level is reduced significantly and kept low until the output of the affected Loudspeaker Element returns to normal. 4. When the XRT28 Loudspeaker System is driven by more than one amplifier, the output levels of the different amplifiers connected to the Loudspeaker System must be adjusted to achieve a proper balance between the low, midrange and high frequencies reproduced. This adjustment is best achieved through the use of audio test equipment operated by a qualified installer.