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McIntosh LS340 Owner`s manual

1. s loudspeakers are designed only for Home Theater applications Not so with the LS340 It is also designed for the accurate reproduction of music Motion pic ture sound effects explosions screams and vehicle crashes require a wide dynamic range and high sound levels These sounds are such that a speaker system having moderate dis tortion would reproduce them with little audible difference This is not true with the reproduction of music Music is by nature and definition harmonious To reproduce it accu rately all forms of distortion both harmonic and intermodulation must be kept to a minimum This has been the result of the design of the new McIntosh LS340 Loud speaker System Each loudspeaker element and crossover component has been carefully designed for durability effi ciency and above all low distortion The McIntosh LS340 Loudspeaker System will reproduce music accurately and function as an excellent Home Theater Loudspeaker Performance Features Gold Plated Input Connectors The LS340 input connectors are gold plated for superior corrosion resistance and high electrical conductivity Acoustic Edge Hole Elimination An edge hole is a severe dip in the high frequency response of a speaker system caused by the relative distance of the dome tweeter to the edge of the speaker cabinet If the distance to the edge of the cabinet is the same on both sides of the dome tweeter cancellation of the sound occurs at a
2. The LS340 has built in speaker protection in the form of three automatic resetting solid state devices as part of the crossover network One protects the tweeter one the midrange and the other the woofers The characteristics of this protection are that a certain amount of overdrive is allowed but extended periods of overdrive will trigger protection If an obvious lack of high or low frequencies is noticed the Loudspeaker Protection Device may have activated Sound output from the Loudspeaker Element affected will be reduced when the protection is triggered The protection devices will automatically reset when the volume control is reduced significantly and kept low until the output of the affected Loudspeaker Element returns to normal Melntosh Introduction The McIntosh LS340 Loudspeaker System is designed for Home Theater and Music Reproduction It is a three way system with two 8 inch LD HP woofers one 6 1 2 inch LD HP midrange and one inch dome tweeter The LS340 is designed to work as a Left or Right Main Loudspeaker in a Music System or as a Main or Surround Loudspeaker in a Home Theater System The LS340 Loudspeaker performance is equivalent to the quality of McIntosh s legendary line of Amplifiers Preamplifiers Signal Processors and Signal Sources without imparting distortion or coloration of its own It also comple ments the capabilities and the remarkably low distortion of McIntosh Power Amplifiers Many of today
3. stand tripod bracket or table specified by the manufac turer or sold with the equipment When a N cart is used use caution when moving the cart equipment combination to avoid injury from tip over Care of Equipment 12 Clean only with a dry cloth 13 Do not permit objects or liquids of any kind to be pushed spilled and or fall into the equipment through enclosure openings Repair of Equipment 14 Refer all servicing to qualified service personnel Servic ing is required when the equipment has been damaged in any way liquid has been spilled or objects have fallen into the equipment the equipment has been exposed to rain or moisture does not operate normally or has been dropped 15 Do not attempt to service beyond that described in the operating instructions All other service should be re ferred to qualified service personnel 16 When replacement parts are required be sure the service technician has used replacement parts specified by McIntosh or have the same characteristics as the original part Unauthorized substitutions may result in fire elec tric shock or other hazards 17 Upon completion of any service or repairs to this prod uct ask the service technician to perform safety checks to determine that the product is in proper operating con dition Thank You Your decision to own this McIntosh LS340 Loudspeaker System ranks you at the very top among discriminating mu sic listeners You now have
4. The Best The McIntosh dedi cation 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 Please Take A Moment 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 Serial Number Purchase Date Dealer Name Technical Assistance 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 addi tional 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 3636 Customer Service 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 Copyri
5. specific frequency McIntosh guards against this phenomenon with a special tweeter mounting that eliminates the edge hole effect A specially designed tweeter bezel and perforated grille mask the tweeter mounting to maintain a symmetrical appearance Introduction and Performance Features e Patented LD HP Technology The McIntosh Low Frequency and Midrange Loudspeaker Elements feature the patented LD HP motor structure This design when compared to conventional Loudspeaker Elements reduces distortion significantly It also increases power handling and efficiency Shielded Magnetic Field The LS340 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 LS340 Loudspeaker Elements to prevent interference e High Power Handling The Loudspeaker Elements and crossover components of the LS340 are all chosen for use with powerful amplifiers up to 350 watts e High Efficiency The Loudspeaker Elements used in the LS340 Loudspeaker System have also been designed for high efficiency As a result any McIntosh Power Amplifier even our smallest will provide satisfying room filling sound Automatic Overload Protection The LS340 has built in Loudspeaker Element Protection in the form of three automatic resetting solid state devices as a part of the crossover network e Flared A
6. the gold interconnecting straps from the two pairs of binding posts on the speakers 2 Connect a loudspeaker cable from the upper HIGH black negative binding post of the right loudspeaker to the negative or common output terminal of the right channel on the amplifier to be used for high and mid range frequencies Connect a loudspeaker cable from the upper HIGH red positive binding post of the right loudspeaker to the positive or 4 ohm output terminal of the right channel of the amplifier to be used for high and mid range frequen cies 4 Repeat steps 1 2 and 3 for the left channel speaker and amplifier to be used for high and mid range frequencies 5 Connect a loudspeaker cable from the lower LOW black negative binding post of the right loudspeaker to the negative or common output terminal of the right channel on the amplifier to be used for low frequencies 6 Connect a loudspeaker cable from the lower LOW red positive binding post of the right loudspeaker to the positive or 4 ohm output terminal of the right channel of the amplifier to be used for low frequencies 7 Repeat steps 5 and 6 for the left channel speaker and am plifier to be used for low frequencies LI Speaker Connections Figure 3 To Amplifier Terminals Left Front Loudspeaker Front and Rear Views 1 inch Dome Tweeter 6 1 2 inch LD HP Midrange 8 inch LD HP Woofers Port Connecting Terminals
7. until the locations that sound best are found j LEFT BETWEEN SPEAKER DISTANCE RIGHT FRONT FRONT LISTENER TO SPEAKER Figure 2 Melntosh How to Connect The McIntosh LS340 Loudspeaker System utilizes binding posts for speaker wire connections Refer to figure 3 1 Connect a loudspeaker cable from the black negative loudspeaker binding post to the negative or common out put terminal of one channel of the amplifier 2 Connect a loudspeaker cable from the red positive loudspeaker binding post to the positive or 4 ohm output terminal of the same channel of the amplifier 3 Tighten all of the loudspeaker and amplifier binding posts How to Connect to Two Stereo Amplifiers for a Bi Amplified Configuration The McIntosh LS340 Loudspeaker System utilizes two pairs of binding posts for bi amplified speaker wire connections Refer to figure 3 Bi amplification allows the use of multiple smaller ampli fiers connected to one loudspeaker which increases the acoustical output Note Output levels of the two amplifiers connected to the HIGH and LOW Loudspeaker Input Terminals must be adjusted to achieve a proper balance between the high and low frequencies reproduced This adjustment is best achieved through the use of audio test equipment operated by a qualified installer a Right Front Loudspeaker How to Connect 1 Remove
8. Melntosh Specifications Driver Complement Two 8 inch Woofers 6 1 2 inch Midrange 1 inch Dome Tweeter Impedance 4 ohms Nominal Frequency Response 48Hz 20KHz 2dB Anechoic Response Sensitivity 87dB 2 8V 1m Crossover Frequencies 1 5kHz 250Hz Power Handling 350 Watts Maximum Dimensions 40 1 4 inches 102 23cm Height 10 1 4 inches 26 03cm Width 17 3 8 inches 44 13cm Depth including Grill Standard Finish Black Ash Natural Cherry Red Cherry Premium Finish Rosewood Gloss Piano Black Weight each 89 5 pounds 40 6kg net 110 pounds 49 9kg in shipping carton 10 Specifications Packing Instructions In the event it is necessary to repack the equipment for shipment the equipment must be packed exactly as received Failure to do this will result in shipping damage Use the original shipping carton and interior parts only if they are all in good serviceable condition If a shipping car ton or any of the interior part s are needed please call or write Customer Service Department of McIntosh Labora tory Packing Instructions 11 tintos McIntosh Laboratory Inc 2 Chambers Street Binghamton NY 13903 McIntosh Part No 040755
9. Melntosh anal LS340 Loudspeaker System LS340 McIntosh Laboratory Inc 2 Chambers Street Binghamton New York 13903 2699 Phone 607 723 3512 FAX 607 724 0549 Melntosh 7 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 Read these instructions 2 Keep these instructions 3 Heed all warnings 4 Follow all instructions 5 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 pres sure levels can cause permanent hearing impairment or loss User caution is advised and ear protection is recommended when playing at high volumes 6 Only use attachments accessories specified by the manufacturer Installation 7 Install in accordance with the manufacturer s instruc tions 8 Do not install near any heat sources such as radiators heat registers stoves or other equipment including am plifiers that produce heat 9 Do not use this equipment near water 10 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 11 Use only with the cart
10. coustic Bass Port The Acoustic Bass Port in the LS340 has flared front and rear openings to eliminate air movement noise LD HP Pat No 5 151 943 Dimensions LS340 Dimensions maa hq SS Tr The following dimensions can assist in determining the best location for your LS340 Loudspeaker System There is ad ditional information on the next page pertaining to installing the LS340 into cabinets 10 1 4 26 03cm g 20 32cm A 40 1 4 102 23cm 37 5 32 94 36cm A 31 78 73cm A 22 5 8 57 47cm A 13 1 2 14 1 2 34 29cm 36 83cm A 15 24cm yY yY yY v 11 5 8 4 29 53cm I 0 16cm Front View of LS340 with Grille Removed Rear View of LS340 Melntosh Dimensions 9 16 5 8 16 3 4 as 42 54cm 142m 1 4 PE 63cm A 38 3 8 97 47cm 40 40 1 4 101 6cm 102 23cm Ha Iyo Al 1 5 8 4 13cm 14 1 2 1 4 36 83cm pasa Side View of LS340 with Grille Side View of LS340 with Grille Removed Installation Optional Feet Two sets of optional feet four Tiptoes and four Glides are supplied with the LS340 Loudspeaker System To prevent crushing carpet use the Tiptoe spikes to protect non carpeted flooring use the chrome Glides Both the Glides and Tiptoes have a threaded shaft and locking nut that screw into the tapped holes in the bottom of the LS340 s base rails The feet can be inde pendently adjusted to compensate for un even flooring o
11. e back wall Refer to figure 1 Locating Loudspeakers for use in a Music System When used as Left and Right Speakers the distance between the two loudspeakers should not exceed the distance between the listener and either loudspeaker If the speakers are too far apart relative to the listener some imaging can be lost To assure the sound from the left and right speakers arrive at the same time the distance from each loudspeaker to the listener should be as close to the same as possible Refer to figure 2 The LS340 Tweeter should be level with the listeners ears and adjustment of the height of the feet to angle the loudspeaker up or down is often the way to achieve this Placement near a wall corner floor ceiling or any inter secting surfaces will reinforce some bass frequencies Which bass frequencies are boosted by placement in a particular location is dependant on the dimensions of the room Test the various loudspeaker locations by playing music with con tinuous bass setting up the speakers and listening to them from the main listening spot Move the loudspeakers to an alternate location and repeat the listening paying attention to how the bass qualities and response levels change Do not assume the loudest bass is best rather listen for booming a lack of articulation as well as a balance over the whole spectrum to assure the bass will not drown out the other parts of the music Experiment with various loudspeaker positions
12. ght 2000 by McIntosh Laboratory Inc Table of Contents Safety Instructions eeneenseeesensenneenneeennnnnnnnneenn nennen 2 Thank You and Please Take a Moment n 3 Technical Assistance and Customer Service 3 Table of Contents and General Notes 3 Introduction er E aE 4 Performance Features 4 Dimensions ur deren esse gern 5 6 Installation u Nana 82 anne sin 7 How t0 Gondeeti 2 20 8 Front and Rear Views ccccccccsesscecsssssecessseecsssseeessrsssessnes 9 SPEecHie tions unenseiiisensntenainsineakhniass 10 Packing Instruction u s 11 General Notes 1 It is very important that loudspeaker cables of adequate size be used in your music system to ensure that there will be no 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 your loudspeaker cables are 25 feet 7 62m or less use at least 18 Gauge AWG wire size or larger If your loudspeaker cables are 50 feet 38 1m or less use at least 16 Gauge AWG wire size or larger If your loudspeaker cables are 100 feet 76 2m or less use at least 14 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 owner s manual s for any component s connected to the LS340 Loudspeaker 3
13. r to aim the loudspeakers upward or downward Tiptoes Glides Locating your Loudspeakers Loudspeaker placement in a room can greatly affect performance The LS340 is designed to work as a Left or Right Main Loudspeaker in a Music System or as a Main or Surround Loudspeaker in a Home Theater System The optimal method for selecting speaker locations in cludes the use of a real time spectrum analyzer operated by an experienced system installer An uncompromising installa tion would take into consideration the floor wall and ceiling coverings the type and placement of furniture and can even include the architectural design of the room and its construc tion materials Locating Loudspeakers for use in Home Theater In a Home Theater application the placement of Left and Right Front Loudspeakers can be limited by such considerations as the size and location of the video monitor The locating suggestions in the for use in a Music System section below can still be helpful Side Surround vert CENTER RIGHT FRONT FRONT FRONT pmnoozuc samme uzcommcHn 419 2 DZceo7r co BACK SURROUND Figure 1 Installation Loudspeakers work best located to either side of and above the listening position the same distance from the monitor Back Surround Loudspeakers work best on th

McIntosh LS340 Owner`s manual

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