Pioneer X-HM10-K Operating Instructions - Page 66

07 Listening to your system Listening with Acoustic Calibration EQ • Default setting: ON You can listen to sources using the Acoustic Calibration Equalization set in Automatically setting up for surround sound (MCACC) on page 51. Refer to these pages for more on Acoustic Calibration Equalization. SYSTEM TV CONTROL INPUT CH HDD DVD VCR DISPLAY S.RETRIEVER EQ CH SELECT SLEEP CH SB CH PHASE MIDNGIHT CH SHIFT • While listening to a source, press , then press EQ to switch the Acoustic Calibration EQ on or off.1 Better sound using Phase Control This system's Phase Control feature uses phase correction measures to make sure your sound source arrives at the listening position in phase, preventing unwanted distortion and/or coloring of the sound (see illustration below). During multichannel playback, LFE (LowFrequency Effects) signals as well as lowfrequency signals in each channel are assigned to the subwoofer or other the subwoofer and the most appropriate speaker. At least in theory, however, this type of processing involves a group delay that varies with frequency, resulting in phase distortion where the low-frequency sound is delayed or muffled by the conflict with other channels. With the Phase Control mode switched on, this system can reproduce powerful bass sound without deteriorating the quality of the original sound (see illustration below). P H Front speaker A S E C O N T R O L Sound O source Subwoofer F F Listening position ? P Front speaker H A S E C O N T R O L O Sound source Subwoofer N Listening position Phase Control technology provides coherent sound reproduction through the use of phase matching2 for an optimal sound image at your listening position. The default setting is on and we recommend leaving Phase Control switched on for all sound sources. SYSTEM TV CONTROL INPUT CH S.RETRIEVER EQ CH SELECT SLEEP CH SB CH PHASE MIDNGIHT CH SHIFT ENTER • Press , then press PHASE to switch on phase correction. Note 1 You can't use Acoustic Calibration EQ with Stream Direct mode. 2 • Phase matching is a very important factor in achieving proper sound reproduction. If two waveforms are 'in phase', they crest and trough together, resulting in increased amplitude, clarity and presence of the sound signal. If a crest of a wave meets a trough (as shown in the upper section of the diagram above) then the sound will be 'out of phase' and an unreliable sound image will be produced. • If your subwoofer has a phase control switch, set it to the plus (+) sign (or 0°). However, the effect you can actually feel when PHASE CONTROL is set to ON on this system depends on the type of your subwoofer. Set your subwoofer to maximize the effect. It is also recommended you try changing the orientation or the place of your subwoofer. • Set the built-in lowpass filter switch of your subwoofer to OFF. If this cannot be done on your subwoofer, set the cutoff frequency to a higher value. • If the speaker distance is not properly set, you may not have a maximized PHASE CONTROL effect. • When the PURE DIRECT mode is selected, the PHASE CONTROL mode cannot be set to ON. 66 En