43Microphone Amplifier Gain Setting using Sound Level Meter and RMS Volt MeterFirst you will need to adjust the “ microphone amplifier gain”.(1) Connect the all speakers and the video monitor (for the on-screen display) with the AVR-5805(2) Connect the microphone with the microphone amplifier(3) Turn on the AVR-5805 and the “microphone amplifier”(4) Turn on the “Phantom Supply” on the microphone amplifier(5) Set the Parameter “Test Tone” to “Manual” and “Test Tone Start” to “Yes” at “2-4. Channel Level”. (See pages 51, 52)(6) Once the test tone for Front Left (FL) speaker starts, check the Sound Pressure Level at the Listening Position with an SPL Meter. Youdo not have to check any of the other channels.(7) Adjust the “Main Volume” so that the Sound Pressure Level measures 80 dB (C-weighted)(8) Once the “Main Volume” as been set, connect the output of microphone amplifier to the RMS Volt Meter(9) Adjust the “microphone amplifier’s gain” as the RMS Volt Meter becomes about 120 [mV RMS](10) Once set, exit out of “System Setup” and turn off the AVR-5805(11) Connect the output of the microphone amplifier to the AVR-5805’s front panel “V.AUX” Left channel audio input–located behind Trap Door(12) Change the setting to “V.AUX L” at “1-4. Mic Input Select”. (See pages 42, 43)(13) Start “Auto Setup”. (See pages 33~39)AVR-5805 Speaker MicrophoneUse the internal test tones formic amp calibration.Pressure level with SPL meter at themicrophone point.Adjust AVR volume SPL meter = 80 dB (C)MIC AMP with micpower supply ex.mixer amp.Measure the output level andadjust the mic amp gain to 120mVrms using a RMS volt meter.120 mVrms1-5. Check the Parameter1 Select “Parameter Check” at the Auto Setup / RoomEQ Menu.CH SELENTER(Main unit) (Remote control unit)• The results of the measured items can be checked.• The EQ parameters that were set in Auto Setup can be checked.• This item is automatically displayed, after the measurement result of the “Auto Setup / Room EQ” is decided.2 Display the Parameter Check screen.CH SELENTER(Main unit) (Remote control unit) , ) ,6 /+ 0) 6 /+ & + , !6 /+6 . 6 /+, . ,:, ;6 /+ * , ) ,6 /+( , 4" "& ( ) * "&, / 5 - "&5/ &" / , ) ,6 /+ 4" "&'( ) *P a r a m e t e r C h e c k* A u t o S e t / R o o m E QS p C o n f i g . C h e c k* P a r a m e t e r C h e c k
