5APPLICATIONS – Px300.4The JBL Px300.4 amplifier can be setup for stereo or tri-mode operation, asshown in Figures 6 and 7.NOTE: For simplicity, Figures 6 and 7 donot show power, remote and inputconnections.Px300.4(rear panel)POWER FUSESGND REM BATTPx300.4 SPEAKER OUTPUTS SPEAKER OUTPUTSSTEREOREARFRONTLRLRBRIDGEDNEON NEON-++-LFSystem+-RFSystemSubwooferSet REARX-OVER MODE to LP(on input panel)FLAT HP LPMODESet FRONTX-OVER MODE to HP(on input panel)FLAT HP LPMODESet FRONTINPUT MODE to ST(on input panel)Set REAR INPUT MODE to MO(on input panel)STINPUTMODEMOSTINPUTMODEMOSee “Setting the Crossover(s)”on page 6 to set FREQ and SLOPEPx300.4(rear panel)POWER FUSESGND REM BATTPx300.4 SPEAKER OUTPUTS SPEAKER OUTPUTSSTEREOREARFRONTLRLRBRIDGEDNEON NEON+-+-LR SpeakerRR SpeakerRF SpeakerLF Speaker+-+-Set REAR and FRONTINPUT MODE to ST(on input panel)Set REAR and FRONTX-OVER MODE to FLAT(on input panel)FLAT HP LPMODESTINPUTMODEMOFigure 6. The JBL Px300.4amplifier is set to stereo modeto drive front and rear pairs offull-range speakers.NOTE: To limit bass sent tofull-range speakers, setX-OVER MODE to HP. Seepage 6 to set FREQ and SLOPE.Figure 7. The JBL Px300.4amplifier is set to drive a stereocomponent system and asubwoofer with a nominalimpedance of 4 ohms or greater.NOTE: To drive a pair of rearmidbass speakers (instead ofsubwoofer), set INPUT MODEto ST, X-OVER MODE to LP,and use DBO to set HP filter.