JBL SYNTHESIS SDP-45 User Manual

JBL SYNTHESIS SDP-45 User Manual Manual pdf 42 page image

JBL SYNTHESIS SDP-45 Setup- 42 -SUBWOOFERThe Subwoofer Menu allows turning the Subwoofer ON (default) or OFF.If any speaker is set to SMALL then the subwoofer must be ON for bestresults.Parameter Possible SettingsSUB WOOFER ON , OFFin2Bypass ON , OFFXTRA BASS ON , OFF (for large front speakers)SUBWOOFER IN 2-CHANNEL BYPASS MODE:Two channel bypass mode is selected by the front panel button labeled―2 CH. BYPASS‖ and applies to analog stereo (left and right only) inputsignals. The signals are bypassing the Digital Signal Processor (DSP)and are routed only through analog preamps and analog volume controlcircuit. In this mode DSP can be completely disabled when the―in2BYPASS‖ option is OFF, or it can be used to extract the basscontents of the analog L and R input channels and output it through theSubwoofer sockets. When ―in2BYPASS‖ option is ON then the cross-over frequency used for bass extraction is the one set up in: SOURCESETUPCROSSOVER FcFRONT, while the Subwoofer VolumeLevel correction is the one set up in: SOURCE SETUPSPEAKERLEVELSUB .XTRA BASS FEATURE:If Subwoofer is present and the Front speakers are declared as Largethen bass contents will be streamed through the Front speakers whileonly LFE will be reproduced through the Subwoofer. In this case, in orderto make the subwoofer reproduce bass from the Front speakers as well,in addition to being reproduced by the Front speakers, Xtra Bass optioncan be enabled. Xtra Bass option has no effect and is disabled when theFront speakers are declared Small or when no subwoofer is present.Xtra Bass option has no effect on LFE reproduction. To turn on theXTRA BASS you must do the following:Front speakers set to LARGE in SPEAKER SIZETurn ON the XTRA BASS in SOURCESETUPSUBWOOFERXTRA BASS In addition, the mixingvolume level of the bass contents can be adjusted by this parameter:SOURCE SETUPSUBWOOFERLEVEL The adjustment rangeis -20dB to 0dB. The LEVEL parameter applies only to Subwoofer inXtra Bass (on top of the normal Subwoofer Level correction fromSOURCE SETUPSPEAKER LEVEL). It is disabled and notapplied if Extra Bass is OFF.You cannot use XTRA BASS if the front speakers are set to SMALLTRIGGERSAllows control of the three (3) triggers on a per source basis. Eachsource can have a different and discrete trigger configurationParameter Possible SettingsTRIGGER #1 ON , OFFTRIGGER #2 ON , OFFTRIGGER #3 ON , OFF