User manual BOSS DIABLO D350.4

[. . . ] 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 amplifier. Using a fuse of a different type or rating may result in damage to your audio system or your amplifier which is not covered by the manufacturer's warranty. General precautions Before installing and using your new amplifier, please become familiar with all the information contained in this manual. Please keep this manual in a safe place for future reference. [. . . ] -or· Run a #0 cable from the fuse holder at the battery to a distribution block at or near the amplifier's location. Then run separate cables from the amplifier to this distribution block and to independent chassis ground points. Connect all line inputs and outputs (if used) using high-quality cables. Connect all speakers, following the diagrams in this manual. Be sure to observe proper polarity to avoid audio phase problems. 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. There are dangerous voltages present within the unit. There are no user-serviceable parts within the unit. OL5KD · OL4KD · OL3KD Amplifier User's Manual - page 5 Low Level Input and Speaker Wiring Low-level (RCA) input wiring is preferred for best audio performance. Always use a high-quality RCA cable for best audio performance. SUBWOOFER Speaker SPEAKER IMPEDANCE 1-8 OHMS To Audio Inputs of satellite amplifier (if present) To Audio Outputs of head unit or Subwoofer outputs of a signal processor Remote Level Control Connections Remote Subwoofer Level Control PLEASE NOTE: In this manual, the OL4KD is used in all system examples, but all three models can be configured in a system in a similar manner. Although the layout of front and rear panels varies slightly between models, the controls and connectors themselves are functionally identical. OL5KD · OL4KD · OL3KD Amplifier User's Manual - page 6 Power Connections Without Stiffening Capacitor Chassis ground point to REMOTE TURN-ON terminal of head unit FUSE Battery With Stiffening Capacitor Distribution Block Chassis ground point Battery FUSE to REMOTE TURN-ON terminal of head unit Stiffening Capacitor Chassis ground point OL5KD · OL4KD · OL3KD Amplifier User's Manual - page 7 Bridging Two OL5KD, Two OL4KD or Two OL3KD Amplifiers INPUT, DATALINK AND SPEAKER CONNECTIONS (SEE NEXT PAGE FOR POWER AND REMOTE LEVEL CONTROL CONNECTIONS) MASTER AMPLIFIER Front panel BRIDGED MODE SWITCH IN MASTER POSITION To Audio Outputs of head unit or Subwoofer outputs of a signal processor SUBWOOFER Speaker BRIDGED MODE SWITCH IN SLAVE POSITION + ­ SPEAKER IMPEDANCE 2-8 OHMS SLAVE AMPLIFIER Front Panel PLEASE NOTE: In this MASTER AMP/SLAVE AMP configuration, the Slave amp receives its audio signal from the Master Amp. Therefore, DO NOT USE THE INPUTS ON THE SLAVE AMP! OL5KD · OL4KD · OL3KD Amplifier User's Manual - page 8 POWER AND REMOTE LEVEL CONTROLLER CONNECTIONS (SEE PREVIOUS PAGE FOR INPUT, DATALINK AND SPEAKER CONNECTIONS) MASTER AMPLIFIER Rear panel Remote Subwoofer Level Control Chassis ground point SLAVE AMPLIFIER Rear Panel PLEASE NOTE: In this MASTER AMP/SLAVE AMP configuration, the Slave amp receives its audio signal from the Master Amp. Therefore, DO NOT USE THE SUBWOOFER LEVEL CONTROL ON THE SLAVE AMP! Distribution Block Chassis ground point Battery FUSE Stiffening Capacitor Chassis ground point to REMOTE TURN-ON terminal of head unit OL5KD · OL4KD · OL3KD Amplifier User's Manual - page 9 Troubleshooting If you experience operation or performance problems with this product, compare your installation with the electrical wiring diagram on the previous pages. If problems persist, read the following troubleshooting tips which may help eliminate the problems. POSSIBLE REMEDY Check to make sure you have a good ground connection. Check that the Remote Input (Turn-On) has at least 3VDC. Check that there is battery power on the (+) terminal. Make sure that the Protection LED is not illuminated. [. . . ] Check for improperly grounded RCA interconnects. Check that the Input Level Control is set to match the signal level of the head unit. Always try to set the Input Level as low as possible. Check that all crossover frequencies are properly set. [. . . ]