JBL MS-A1004 User Manual

Also see for MS-A1004: User guide User guide

Contents

10To Set the Input Level:1. Move the switch for the Input Signal Selector to the Hi position (or Hi2, if you are connecting to a factorysystem with open-circuit protection).2. Set the bass, treble, balance and fader controls on your head unit to the center (or flat) positions. Setloudness to off. Defeat any sound-enhancement (such as DSP, surround sound or EQ) settings.3. Insert the setup CD into your head unit and verify that the CD is playing.4. Enter Setup mode by pressing CW and CCW buttons simultaneously for more than three seconds untilthe Input Level adjustment icon lights. The amplifier’s output will be muted (the output-level indi-cator will show “ ” in the display).5. Turn the head unit’s volume control all the way up (to maximum output).6. Using a small screwdriver on the level-adjustment dial next to the Input Signal Selector switch,adjust the Input-Level Control up or down, while watching the icons on the amplifier’s display panel.If the green “up” arrow icon is lit, turn the control clockwise until the icon is lit.If the red “down” arrow icon is lit, turn the control counterclockwise until the iconis lit.NOTE: If turning the control fully clockwise doesn’t cause the icon to light, move the switch forthe Input Signal Selector to the Lo position and try again.Once the icon is lit, stop adjusting and repeat the procedure to set the input level on the other channels.When both check marks are lit, the input levels for each channel pair are set properly.To Enable or Disable Signal-Sensing Turn-On:7. While in Setup mode, enable/disable signal-sensing turn-onby turning the rotary controller clockwise or counterclockwiseto select SEn On or SEn OFF in the display. If you haveconnected a remote turn-on lead, set to SEn OFF.8. Turn the volume control on your head unit down and remove thesetup CD. If you miss or circumvent this step, the audio systemwill reproduce a loud test signal that could damage speakers when exiting the Setup mode.9. Press and release the CW and CCW buttons simultaneously to exit Setup mode.10. Do not adjust the Input-Level Controls further. Use the Output Gain Control to balance the channel levelsand to “tune” the system.seTTiNG THe FiLTers (CrOssOVers)There are 98 selectable frequencies for the low-pass and high-passfilter settings. The selectable frequencies are detailed in the table to theright.Getting to the Crossover settingsPress both CCW and CW buttons at the same time for less than threeseconds and release, to activate the controls. Use the CCW and CWbuttons to navigate to the preferred crossover-adjustment parameter.How to set a High-Pass FilterNavigate to the high-pass filter frequency parameter and, using therotary encoder, select the desired cutoff frequency. Then navigate tothe high-pass filter slope parameter and, using the rotary encoder,select the desired filter slope.High-Pass exampleUse the CW and CCW buttons to navigate to the Low-Pass frequencyparameter and set to OFF.How to set a Low-Pass FilterNavigate to the Low-Pass Filter frequency parameter and, using the rotary encoder, select the desiredcutoff frequency. Then navigate to the Low-Pass Filter slope parameter and, using the rotary encoder,select the desired filter slope.Low-Pass exampleUse the CW and CCW buttons to navigate to the High-Pass frequency parameter and set to OFF.Mode FunctionSEn On Signal Sensing is ONSEn OFF Signal Sensing is OFFAvailable Crossover Frequency settings20.0Hz 95.0Hz 260Hz 1.40kHz 4.80kHz22.5Hz 100Hz 270Hz 1.50kHz 5.00kHz25.0Hz 105Hz 280Hz 1.60kHz 5.50kHz27.5Hz 110Hz 290Hz 1.70kHz 6.00kHz30.0Hz 115Hz 300Hz 1.80kHz 6.50kHz32.5Hz 120Hz 350Hz 1.90kHz 7.00kHz35.0Hz 125Hz 400Hz 2.00kHz 7.50kHz37.5Hz 130Hz 450Hz 2.20kHz 8.00kHz40.0Hz 140Hz 500Hz 2.40kHz 8.50kHz42.5Hz 150Hz 550Hz 2.60kHz 9.00kHz45.0Hz 160Hz 600Hz 2.80kHz 9.50kHz50.0Hz 170Hz 650Hz 3.00kHz 10.0kHz55.0Hz 180Hz 700Hz 3.20kHz 12.0kHz60.0Hz 190Hz 750Hz 3.40kHz 14.0kHz65.0Hz 200Hz 800Hz 3.60kHz 16.0kHz70.0Hz 210Hz 900 Hz 3.80kHz 18.0kHz75.0Hz 220Hz 1.0kHz 4.00kHz 20.0kHz80.0Hz 230Hz 1.10kHz 4.20kHz OFF85.0Hz 240Hz 1.20kHz 4.40kHz90.0Hz 250Hz 1.30kHz 4.60kHz