User manual JBL MA6004

[. . . ] INSTALLATION WARNINGS AND TIPS · Always wear protective eyewear when using tools. · Turn off the audio system and other electrical devices before you start. Disconnect the (­) negative lead from your boat's battery. · At the installation sites, locate and make a note of all fuel lines, hydraulic brake lines, vacuum lines and electrical wiring. [. . . ] Please adhere to the following instructions carefully: Ground Connection Connect the amplifier's Ground (GND) terminal to the battery's negative terminal, using a ring terminal. Refer to the wire gauge chart to determine minimum wire gauge size. Power Connection Connect a wire (see chart at right for appropriate gauge) directly to the positive battery terminal, and install an appropriate fuse holder within 18" of the battery terminal. Route the wire to the amplifier's location, and connect it to the amplifier's Positive (+12V) terminal. Be sure to use appropriate grommets whenever routing wires through a bulkhead or other obstruction. Failure to adequately protect the positive wire from potential damage may result in a fire. When you are done routing and connecting this wire, you may install the fuse at the battery. Remote Connection Connect the amplifier's Remote (REM) terminal to the source unit's Remote TurnOn lead using a minimum of 18-gauge wire. NOTE: If your source unit does not have a remote turn-on connection, connect the amplifier's (REM) terminal to a wire that provides +12V when the boat's accessories are on or when the key is switched on. If no such circuit exists, install a switch. Install a switch for the Remote Turn-On lead. NC +12V AMP REM NO Speaker Connections Refer to the application guides on the pages that follow. Speaker connections should be made using a minimum of 16-gauge wire. Wire Gauge Chart Amplifier Maximum Minimum Model Current Draw Wire Gauge MA6002 22A #8 AWG MA6004 40A #8 AWG These recommendations assume 10' ­ 12' wire runs. If your amplifier will be mounted farther than 12' from the boat's battery, use a larger gauge. Figure 1. Terminal connection end plate for MA6004. Figure 2. Terminal connection end plate for MA6002. 3 APPLICATIONS ­ MA6004 The MA6004 can be set up for stereo 4-channel, 3-channel or bridged 2-channel operation, as shown in Figures 4 through 6. NOTE: For simplicity, Figures 4 through 6 do not show power, remote and input connections. NOTE: Minimum speaker impedance for stereo operation is 2 ohms. Minimum speaker impedance for bridged operation is 4 ohms. Front Left Front Right Figure 4. MA6004 amplifier in 4-channel (stereo) operation to drive front and rear full-range speakers. Rear Left Rear Right Front Left Front Right Rear Left Rear Right Front Left Front Right Figure 5. MA6004 is set up for 3-channel operation to drive a set of full-range speakers and a subwoofer. Figure 6. [. . . ] On the source unit, increase the volume control to 3/4 volume. Slowly increase the INPUT LEVEL control(s) toward "three o'clock" until you hear slight distortion in the music. Then reduce the INPUT LEVEL slightly until distortion is no longer heard. NOTE: After the source unit is on, blue LEDs (on the top panel) will light, indicating the amplifier is on. [. . . ]