5. Input Connections This amplifier features both high and low-level input capability. Use either the low-level or high-level inputs, not both. If low-level outputs are provided from the car stereo, it is recommended that the low-level inputs be used for lowest distortion and best performance. Use good quality shielded audio cables with RCA plugs at both ends to connect the stereo to the amplifier and keep the cable lengths to a minimum to avoid noise. If the car stereo does not provide low-level outputs, the amplifier may be connected via the speaker (high-level) outputs from the stereo. Wire the speaker leads from the car stereo to the 4-pin adaptor harness as shown in the diagram (shielded cable is not required for this application) and plug the connector into the mating High-Level Input connector on the amplifier. Carefully splice and insulate all wire connections. CAUTION: Use either the low-level or the high-level inputs on the amplifier. DO NOT use both input levels at the same time. -5 4-PINCONNECTORIMPORTANTUSEEITHERHIGH-LEVELORLOW-LEVELINPUTS,NOTBOTH. HIGH-LEVEL(SPEAKER)OUTPUTSCARSTEREOUSETHISINPUTWIRINGWITHOUTPUTWIRINGONPAGE7-6- STEREOANDMIXED-MONOINPUTWIRINGDIAGRAMRCATYPESHIELDEDCABLE(NOTINCLUDED) RIGHT+ 54RIGHT- 32LEFT- LEFT+ LOW-LEVELRCAOUTPUTSWHITEw/BLACKSTRIPEWHITEGRAYGRAYw/BLACKSTRIPELEFTRIGHT1CARSTEREOUSETHISINPUTWIRINGWITHOUTPUTWIRINGONPAGE7-6- STEREOANDMIXED-MONOINPUTWIRINGDIAGRAMRCATYPESHIELDEDCABLE(NOTINCLUDED) RIGHT+ 54RIGHT- 32LEFT- LEFT+ LOW-LEVELRCAOUTPUTSWHITEw/BLACKSTRIPEWHITEGRAYGRAYw/BLACKSTRIPELEFTRIGHT1 EXISTINGSCREWORBOLTCLEANPAINT,RUST,DIRTORGREASEFROMAREAFORGOODCONNECTIONGROUNDEDMETALSECTIONOFVEHICLEAUTO-ANTENNALEADUSETHISOUTPUTWIRINGWITHINPUTWIRINGONPAGE6STEREOANDMIXED-MONOOUTPUTWIRINGDIAGRAMLEFTSPEAKER m -m12VOLTVEHICLEBATTERYCHASSISGROUNDUSE#10GAUGEWIRE(SEETEXT) + CARSTEREOSTEREOMODE:2-8OHMSMIXED-MONOMODE:4-8OHMSMIXED-MONOSPEAKERORSUB-WOOFERWITHCROSSOVERRIGHTSPEAKERSTEREOMODE:2-8OHMSMIXED-MONOMODE:4-8OHMSCONNECTTHISWIRELAST-mm+ m+m-6EXISTINGSCREWORBOLTCLEANPAINT,RUST,DIRTORGREASEFROMAREAFORGOODCONNECTIONGROUNDEDMETALSECTIONOFVEHICLEAUTO-ANTENNALEADUSETHISOUTPUTWIRINGWITHINPUTWIRINGONPAGE6STEREOANDMIXED-MONOOUTPUTWIRINGDIAGRAMLEFTSPEAKER m -m12VOLTVEHICLEBATTERYCHASSISGROUNDUSE#10GAUGEWIRE(SEETEXT) + CARSTEREOSTEREOMODE:2-8OHMSMIXED-MONOMODE:4-8OHMSMIXED-MONOSPEAKERORSUB-WOOFERWITHCROSSOVERRIGHTSPEAKERSTEREOMODE:2-8OHMSMIXED-MONOMODE:4-8OHMSCONNECTTHISWIRELAST-mm+ m+m-6 4-8 OHMS -7 MONO(BRIDGED)INPUTWIRINGDIAGRAMMONO(BRIDGED)INPUTWIRINGDIAGRAM LOW-LEVEL CAR STEREO RCAOUTPUTS TO 2nd AMPLIFIER IMPORTANT USEEITHERHIGHORLOW-LEVEL INPUTS,NOTBOTH. "Y"RCATYPE SHIELDED CABLE (NOT SUPPLIED) 4523WHITEw/BLACKSTRIPEWHITEGRAYGRAYw/BLACKSTRIPE HIGH-LEVEL (SPEAKER)OUTPUTS - + - + -8 USE THIS INPUT WIRING WITH OUTPUT WIRING ON PAGE 9 TO2ndAMPLIFIER 4-PIN CONNECTOR 1 USETHIS OUTPUTWIRING WITH MONO (BRIDGED) OUTPUT WIRING DIAGRAM INPUTWIRING ONPAGE 8 USE#10GAUGEWIRE(SEETEXT) CARSTEREO mm + - MONOSPEAKERORSUB-WOOFER4-8OHMS12VOLTVEHICLEBATTERYAUTO-ANTENNALEADCONNECTTHISWIRELASTEXISTINGSCREWORBOLTCLEANPAINT,RUST,DIRTORGREASEFROMAREAFORGOODCONNECTIONGROUNDEDMETALSECTIONOFVEHICLE -9 OPERATION After initial set-up, the amplifier should not require any further adjustment unless there is a change in the car stereo or speaker system with which it is used. 1 Power Indicator The Power LED functions as a power and warning indicator. The indicator is white when the power to the amplifier is off. When the indicator is green, the amplifier is operating normally. The LED illuminates red to indicate that the self-protection circuits have been activated and have shut off operation of the amplifier. The protection circuits may be triggered by the temperature of the unit rising above a safe level or by an overload condition. If activated by a rise in temperature, the unit will resume operation after cooling off to a normal operating range. If activated by an overload condition, the source of the overload must be found and corrected to resume operation of the amplifier. Most overload conditions are caused by mis-wiring or operation into incorrect speaker loads. Re-check all wiring and connections if this situation occurs and correct as necessary. 2 Level (Gain) Control The amplifier is capable of operating from sources supplying a wide range of input levels. The Level control should initially be set to the mid-rotation position. If it is found that there is not enough output even when the volume control on the car stereo is at its maximum setting, adjust the Level control to increase the output from the system. If, however, there is still output from the amplifier when the car stereo volume control is at its minimum setting, or the output level increases too fast with a small rotation of the volume control, adjust the Level control to decrease the output from the system. Once the correct setting is found, this control should not require any further adjustment. -10 3 Filter Selector This switch allows selectio...