User manual ALTEC LANSING 2200 POWER AMPLIFIER

[. . . ] In addition they provide maximum electrical damping (better control of speaker movement at low frequencies). When estimating the length of wire required for each speaker, allow a few extra feet. This is necessary because you may have to experiment to find the best location for maximum speaker performance, then cut the wires to exact size. Prepare the wires by stripping half of the insulation from the ends of the wire. [. . . ] Once the insulation is removed, twist the copper wire so that it will go into the speaker terminals more easily. If the speaker must be repeatedly moved, connecting the speaker wires to banana plugs may be desirable. Notice that most wires have some kind of marking (either a color strip or ridges) that allow you to differentiate one conductor from other. To obtain maximum bass response it is important that all speakers operate in union (speakers are phased). Locating the Speaker for Best Performance The location of the speakers in a room is usually dictated by space that is available and room décor. In most instances, a few changes to the room will help achieve the best sound performance. Certain basic considerations can be accommodated to achieve good results. The following information should act as a guide in placing the speakers. Uncovered floors, window panes and mirrors can dramatically affect the distribution of higher frequencies. If you can detect reflections (loss of desired stereo effect) of higher frequencies and you suspect the floor may be the problem, placing a rug on the floor close to the speaker may solve the problem. If a window may be the cause of reflections, drapes should solve the problem. So what sounds "normal" can actually be loud and harmful to your hearing. Guard against this by setting your equipment at a safe level BEFORE your hearing adapts. To Establish a Safe Level · Start your volume control at a low setting. · Slowly increase the sound until you can hear it comfortably and clearly and without distortion. · Once You Have Established a Comfortable Sound Level, set the dial and leave it there. Taking a minute to do this now will help prevent hearing damage or loss in the future. Used wisely, your new sound equipment will provide a lifetime of fun and enjoyment. Since hearing damage from loud noise is often undetectable until it is too late, this manufacturer and the Electronic Industries Association's Consumer Electronics Group recommend you avoid prolonged exposure to excessive noise. Decibel Level 30 40 50 60 70 80 Example Quiet library, soft whispers Living room, refrigerator, bedroom away from traffic Light traffic, normal conversation, quiet office Air conditioner at 20 feet, sewing machine Vacuum cleaner, hair dryer, noisy restaurant Average city traffic, garbage disposals, alarm clock at two feet The Following Noises Can Be Dangerous Under Constant Exposure 90 100 120 140 180 Subway, motorcycle, truck traffic, lawn mower Garbage truck, chain saw, pneumatic drill Rock band concert in front of speakers, thunderclap Gunshot blast, jet plane Rocket launching pad Precaution The speakers used in Altec Lansing systems can handle large peaks of power without damage. This is achieved by special high temperature wire, adhesive and coil forms. [. . . ] This is achieved by special high temperature wire, adhesive and coil forms. However, damage may occur to the midrange and tweeter when these speakers are operated from amplifiers that are highly distorted. Usually some lower power handling amplifiers are easily driven into "clipping" levels. Even though the amplifiers are low power, the distorted wave forms can cause damage more so than the high power clean amplifiers. [. . . ]