501 Turn the SELECT knob to select the surround mode.(Main unit)• When turned clockwise2 Press the SURROUND PARAMETER button.Press and hold in the surround parameter button to select the parameter you want to set.• The parameters which can be set differ for the different surround modes. (Refer to “Surround Modes and Parameters” on page 51.)DIRECT STEREO DOLBY PRO LOGIC IIx 5CH/6CH STEREO MONO MOVIEJAZZ CLUB ROCK ARENAVIDEO GAMEMATRIXVIRTUAL SURROUNDDTS NEO:6DIRECT STEREO DOLBY PRO LOGIC IIx 5CH/6CH STEREO MONO MOVIEJAZZ CLUB ROCK ARENAVIDEO GAMEMATRIXVIRTUAL SURROUNDDTS NEO:6• Operating the surround mode and surround parameters from the main unit‘s panel.1, 321• When turned counterclockwiseTo select the surround mode while adjusting the surround parameters, tone defeat or tone control, press the SURROUND MODEbutton then operate the selector.(Main unit)(Main unit)3 Display the parameter you want to adjust, then turn the SELECT knob to set it.Surround parameters eROOM 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 soundfield, “large” a large sound field.EFFECT LEVEL:This sets the strength of the surround effect.The level can be set in 15 steps from 1 to 15. Lower the level if the sound seems distorted.DELAY TIME:In the matrix mode only, the delay time can be set within the range of 0 to 110 ms.NOTES:• When making parameter settings, the display will return to the regular condition several seconds after the last button was pressed andthe setting will be completed.• When the “5CH/6CH STEREO” mode is selected, the display differs according to the Surround Back CH ON/OFF.Surround Back CH ON: 6CH STEREOSurround Back CH OFF: 5CH STEREOENGLISH