JBL 305P MkII Owner's Manual

Also see for 305P MkII: Quick setup guide

14AUDIO CONNECTIONSConnect signal sources to either the XLR or 6mm (¼") INPUT connectors. Connect a single signal source tothe speaker using either the XLR INPUT connectors, OR the 6mm (¼") TRS INPUT connectors. Do not connectmultiple signal sources to the XLR and 6mm (¼") input connectors simultaneously.If the LSR310S subwoofer is being used to reproduce the .1 LFE channel in a surround sound system, connectthe .1 LFE signal to either the LEFT or RIGHT input of the subwoofer.SETTING THE SUBWOOFER LEVELWhen the LSR310S subwoofer is used in a system with 3 Series MkII Studio Monitors, the ideal balance isachieved when the position of the subwoofer VOLUME control is set to the same position as the main speakerVOLUME controls. However, note that the placement of the speakers in the room can affect the amount of bassheard at the listening position. If more or less subwoofer volume is desired, use the subwoofer VOLUME controlto achieve the optimum balance for the application and your preference.PLACEMENT AND POLARITY SETTINGBecause the human ear cannot easily recognize the origin of low frequency sounds (the sounds are said tobe “non-directional”), subwoofer placement is not nearly as critical as main channel speaker positioning.The LSR310S is designed to be placed directly on the floor and not elevated or mounted in any way. Set thePOLARITY switch to the setting that yields a stronger perceived bass response at the listening position.In a stereo system, the subwoofer should optimally be placed between the two main speakers. In a surroundsound system, the subwoofer should be placed between the center and left channel speakers or the centerand right channel speakers. Precise central placement is not necessary. Centered positioning in the room cansometimes cause unwanted cancellation of low frequency content, so it is recommended that the subwoofer beplaced slightly off-center and not at the midpoint between the left and right walls.