User manual BOSS GT GT2500D

[. . . ] Take extreme caution when mounting the amplifier, so as not to damage the chassis with a drill or screwdriver. , , Run a 4 gauge wire from the battery, using a fuse within 18 (457mm) of the positive battery terminal. The purpose of this fuse is to protect the battery in the event that this wire accidentally contacts the chassis ground on its run to the amplifier. [. . . ] A different type or rating may result in damage or cause a fire. Mounting the Amplifier Mark the location for the mounting screw holes by positioning the amplifier where you wish to install it and use a scribe (or one of the mounting screws) inserted in each mounting hole to mark the mounting surface. If the mounting surface is carpeted, measure the hole centers and mark with a felt tip pen. Drill pilot holes in the mounting surface for the mounting screws and insert the mounting screws into these holes. Note: Before beginning your installation, be sure to take note of any wires, lines or other devices in your vehicle which may be located behind any mounting surface. (BRIDGED SWITCH : SLAVE POSITION) Precautions Before you drill or cut any holes, investigate your car's layout very carefully. Take care when you work near the gas tank, fuel lines, hydraulic lines and electrical wiring. Do not operate the amplifier when it is not mounted. Attach all audio system components securely within the automobile to prevent damage, especially in case of an accident. Do not mount this amplifier so that the wire connections are unprotected or in a pinched condition, or likely to be damaged by nearby objects. Before making or breaking power connections in your system, disconnect the vehicle battery. Confirm that your head unit or other equipment is turned off while connecting the input jacks and speaker terminals. If you need to replace the power fuse, replace it only with a fuse identical to that supplied with the system. Using a fuse of different type or rating may result in damage to your system which isn't covered by the manufacturer's warranty. Troubleshooting Before removing your amplifier, refer to the list below and follow the suggested procedures. Always test the speakers and their wires first. Amplifier will not power up Check for good ground connection. Check that Remote Input (turn-on) at amplifier has at least 3 volts DC present. [. . . ] Check that crossover frequencies have been properly set. Check for short circuits on the speaker leads. Amplifier gets very hot Check that the minimum speaker impedance for that model is correct. [. . . ]