User manual BOSS CHAOS EXXTREME CX2500D

[. . . ] Take special care when you work near the gas tank, fuel lines, hydraulic lines and electrical wiring. Never operate the amplifier when it is unmounted. Attach all audio system components securely to prevent damage, especially in an accident. Before making or breaking power connections in your system, disconnect the vehicle battery. [. . . ] Insert fuse(s) into the battery fuse holder(s). Recheck all connections before powering up the amplifier. Set all level controls to minimum position, and set all crossover controls/switches to the desired frequency points. Power up the head unit and the amplifier. Then set the volume control on the head unit to about 3/4 volume, and adjust the amplifier's input level control(s) to just below the level of distortion. Further fine tuning of the various controls may be necessary to obtain best results. Connecting the amplifier Before doing any wiring, look through this manual and identify the diagrams to follow for power, input and speaker connections for your particular installation. Be sure you understand all the connections before you proceed. Connect the amplifier's power ground terminal to the closest point on the chassis of the car. Keep this ground wire to less than 39" (100 cm) in length. Connect the remote terminal to the remote output of the head unit using 16 gauge (or heavier) wire. Connect an empty fuse holder within 18" (45 cm) of the car battery, and run 4 gauge (or heavier) cable from this fuse to the amplifier location. The purpose of placing a fuse in this location is to protect your vehicle's battery in the event that this wire accidentally touches the chassis ground on its run to the amplifier. CX2500D · CX3500D Amplifier User's Manual - page 4 Important installation considerations for using this amplifier. Your CHAOS EXXTREME Class D amplifier is designed to run with a minimum load of 1 Ohm. Operating the CX2500D or CX3500D with a speaker impedance load below 1 Ohm may result in poor sound quality and damage to the amplifier circuitry. Such damage is not covered under the warranty for this product. The fuse ratings for these amps is 40A (using two 20A fuses) for the CX2500D and 90A (using three 30A fuses) for the CX3500D. Although sufficient for normal working conditions, overloading the amp may result in blown fuses. Please try to avoid overloading the amp in this manner. Tips for making your system as safe as possible When making electrical connections to the amplifier, please observe the following: · Always use 4GA or heavier wire for power and ground connections. · Wire the amplifier directly to the car battery. Make sure there is circuit protection (such as a fuse) on the positive power lead within 18" of the battery. [. . . ] This is usually caused by poor quality RCA cables, which can pick up radiated noise. Use only the best quality cables, and route them away from power cables. Check that speaker leads are not shorted to the vehicle chassis. Check that the RCA grounds are not shorted to the vehicle chassis. [. . . ]