User manual HARMAN KARDON TC304

[. . . ] Thank you for choosing a Harman Kardon Tunnel Cooled amplifier. This is a superb piece of high fidelity equipment that has been meticulously designed to provide you with many hours of enjoyment. Harman Kardon's Tunnel Cooled amplifiers are the result of an extensive engineering project to create the finest automotive highfidelity amplifiers available. These amplifiers provide superior performance, can operate under extreme environmental conditions, and are highly adaptable to various system configurations. [. . . ] Do not connect one unit to another unit's negative ground terminal and rely on the second unit's ground wire to ground both units (daisy-chaining). This configuration can cause a ground loop, which can introduce noise into the system. Power connections Your TC Series amplifier requires a positive 12V battery connection and a negative 12V ground. Use 10-gauge or larger wire for these connections. TC600 12V Positive (B+) connection Remember-: Connecting your. amplifier to the positi, te terminal of your battery is the last thing you do, afrer all other- connections in your system have been conzpleted. The TC600 requires two individual wires connected to the two battery (+) terminals on the amplifier. Make sure you route these leads separately from the preamp output cables to avoid the possibility of noise in the system. There are two methods you can use to complete this connection: e r connections I SIGNAL INPUT SPEAKER OUTPUT Option 1: Connect two 10-gauge or larger wires to the positive terminal on the battery. Within 18" of the battery terminal, insert a 45-amp fuse, fuseable link, or circuit breaker in each lead. Connect each lead to one of the two battery (+) terminals on the TC600. Option 2: Connect a single 4-gauge or larger lead to the positive terminal on the battery. Within 18" of the battery terminal, insert a 90-amp fuse, fuseable link or circuit breaker in the lead. Run the single lead to the area where you have mounted your TC600, then use a splitter to split to two 10-gauge leads that then connect to the two battery + terminals on the TC600. 12V Ground ( E L ) connection Connect two 10-gauge or larger wires to the two ground (-) connectors on the TC600, then run both leads to the same point on the metal chassis of the car. Make sure you scrape down to bare metal, and make sure that the metal is directly part of the main vehicle chassis. Keep the ground leads as short as possible. TC3OO or T C 3 0 4 12V Positive (B+) connection Remember: Connecting your amplifier to the positive terminal of your battery is the last thing you do, after all other connections in your system have been completed. Connect a 10-gauge or larger wire to the positive terminal on the battery. Within 18" of the battery terminal, insert a 45-amp fuse, fuseable link, or circuit breaker in the lead. Connect the lead to the battery (+) terminal on the TC300 or TC304. Make sure you route this lead separately from the preamp output cables to avoid the possibility of noise in the system. 12V Ground (B-) connection Connect a single 10-gauge or larger wire to the ground (-) connector on the amp, then run the lead to the metal chassis of the car. Make sure you scrape down to bare metal, and make sure that the metal is directly part of the main vehicle chassis. Keep the ground lead as short as possible. T C 3 0 4 power connections SIGNAL INPUT SPEAKEROUTPUT L R L R L (~lusaan~islsed 0-logawie Remote-on Many head units provide a remote-on lead, which connects directly to the Remote connector on your TC Series amplifier. in turn, automatically turn on the amplifier. If your head unit does not have a remote-on lead. you can still wire your system for remote turn-on by using one of these options: Option I : Connect the antenna power lead to the Remote terminal on the TC Series amplifier. Note: This configuration may require that you have the power to the radio on when you play a tape or CD. Option 2: Wire a switch in the passenger compartment to switch the positive terminal on the battery (+12V) to the Remote terminal on the amplifier. [. . . ] Input control is adjusted too high and amplifier is clipping. Remedy Readjust input control (see "Controls and operation"). Upgrade speakers to a model that can handle higher power and/or readjust INPUT control counterclockwise. Readjust input level control counterclockwise to eliminate clipping (see "Controls and operation"). Fan reversal for multiple amplifier installations In some installations, it may be desirable to mount two or more TC Series amplifiers one after another in a line. You can reverse the fan in any amplifier to reverse the direction of air flow through the tunnel; this enables you to prevent the warm air from the first amp from being vented into the tunnel of the second amp. [. . . ]