63Basic OperationROOM SIZE:This sets the size of the sound field.There are five settings: “small”, “med.s” (medium-small),“medium”, “med.l” (medium-large) and “large”. “small”recreates a small sound field, “large” a large sound field.¢ Surround parameters yEFFECT:This parameter turns the effect signals with multi surroundmode speaker effects on and off in the WIDE SCREENmode. When this parameter is turned off, the SBL and SBRchannel signals are equivalent to the SL and SR channels,respectively.LEVEL:This parameter sets the strength of the effect signals in theWIDE SCREEN mode. It can be set in 15 steps, from “1”to “15”. Set this to a low level if the positioning or phaseof the surround signals sounds unnatural.SB CH OUT:• ON:Playback is conducted using the surround back speaker.• OFF:Playback is conducted without using the surround backspeaker.NOTE:This operation can be performed directly pressing theSURROUND BACK button on the main unit’s panel.DELAY TIME:In the matrix mode only, the delay time can be set withinthe range of 0 to 300 ms.EFFECT LEVEL:This sets the strength of the surround effect.The level can be set in 15 steps from 1 to 15. Lower thelevel if the sound seems distorted.Tone control setting• Use the tone control setting to adjust the bass and treble asdesired.• The tone control function will not work in the PURE DIRECT,DIRECT or Home THX Cinema mode.¢ Adjusting the tone1 Press the SURROUND PARAMETER button.• Display the surround parameter menu.2 Press the CURSOR DD or HH button to select“TONE”.The screen selected surround mode appears.3 Press the CURSOR FF button.• Switch to the “Tone Control” screen.4 Press the CURSOR GG button to select “ToneDefeat OFF”.
