Pioneer VSX-92TXH Owner's Manual - Page 11

5 minute guide 02 Using Full Band Phase Control The Full Band Phase Control feature calibrates the frequency-phase characteristics of the speakers connected. Standard speakers designed exclusively for audio use generally reproduce sound with the divided frequency bands output from a speaker system consisting of multiple speakers (in case of typical 3-way speakers, for instance, the tweeter, the squawker (midrange), and the woofer output sound in the high-, middle-, and lowfrequency ranges, respectively). Though these speakers are designed to flatten the frequency-amplitude characteristics across wide ranges, there are cases where the group delay characteristics are not effectively flattened. This phase distortion of the speakers subsequently causes group delay (the delay of lowfrequency sound against high-frequency sound) during audio signal playback. This receiver analyzes the frequency-phase characteristics of the speakers by calibrating test signals output from the speakers with the supplied microphone, therefore flattening the analyzed frequency-phase characteristics during audio signal playback1 - the same correction is made for a pair of left and right speakers. This correction minimizes group delay between the ranges of a speaker and improves the frequency-phase characteristics across all ranges. Furthermore, the enhanced frequency-phase characteristics between channels ensure better surround sound integration for multichannel setting.2 Full Band Phase Control OFF Tweeter Midrange Woofer Group Delay Characteristics ms Sound in the middle- and low-frequency ranges is delayed against the high-frequency sound due to group delay. Full Band Phase Control ON Tweeter Midrange Woofer Group Delay Characteristics ms Hz With the phase distortion corrected, the frequency-phase characteristics are improved across all ranges. • Sound with live dynamics • Sound of musical instruments with superb reality • Sound so accurately reproduced that you can even hear the lip movement of the singer • Speech heard with no loss of clarity • Surround sound with excellent integration PHOTO T.DISP STEREO/ STATUS SIGNAL SEL SBch F.S.SURR MULTI OPE THX STANDARD ADV. SURR SHIFT PHASE MCACC S.DIRECT • Press PHASE (PHASE CONTROL) to select FULLBAND PHASE.3 Both the Phase Control and Full Band Phase Control functions are switched on. The FULL BAND PHASE CTRL indicator lights on the front panel display. Hz Note 1 To calibrate and analyze the frequency-phase characteristics of the speakers, follow the procedures in Auto MCACC (see Automatically setting up for surround sound (MCACC & Full Band Phase Control) on page 8) or FULL BAND PHASE CTRL in the System Setup (see Full Band Phase Control on page 44). Select ALL when you perform the Auto MCACC setup with CUSTOM. Upon calibration of the frequency-phase characteristics of the speakers, the FULL BAND PHASE CTRL feature is automatically switched on. Note that FULLBAND PHASE cannot be selected unless the frequency-phase characteristics of the speakers are calibrated. 2 The original characteristics of group delay of the speakers calibrated and the targeted characteristics after correction can be displayed graphically in the OSD (see Full Band Phase Control on page 44). Also, when your PC is connected to this receiver, the original characteristics of group delay of the speakers calibrated and the corrected characteristics of group delay can be displayed in 3-dimension on your PC (see Advanced MCACC output using your PC on page 64). 3 • The FULL BAND PHASE CTRL mode cannot be set to ON in the following cases: - When headphones are plugged in. - When the PURE DIRECT mode is switched on. - When MULTI CH IN is selected. - When the HDMI audio output parameter is set to THROUGH in Setting the Audio options. 11 En