InFocus IN3900 Playing sound through the projector, About the microphone input, Signal, Parameter

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Playing sound through the projector

This projector is equipped with a 20-watt stereo speaker system, a dedicated microphone input, and advanced audio processing for superb audio performance.

External amplified speakers may also be connected using the audio-out connector on the projector.

This system has assignable audio. Audio 1, Audio 2 and/or the microphone can be assigned in any combination through the Audio Inputs feature described on page 33. NOTE: The microphone audio can be used alone (with other audio muted), or in conjunction with other audio simultaneously. The mixing of the microphone audio and other audio inputs is handled through the Mic Volume menu.

By default, Audio 1 plus microphone is associated with VGA 1 and VGA 2. Audio 2 plus microphone is associated with the Composite Video.

About the microphone input

If you wish to use a microphone, connect a 3.5 mini jack cable Dynamic

 

Microphone to the projector.

 

 

 

You can use a wireless microphone as long as a wireless module is attached to

 

the projector’s microphone input jack and it works well with the associated

 

devices. To ensure a quality use of the wireless microphone, it is recommended

 

that your microphone conforms to the specifications listed in the table below.

 

 

 

 

 

 

 

 

 

Signal

Parameter

Min

Max

 

 

 

 

 

 

 

 

 

 

Microphone

Transducer Principle

 

 

Dynamic

 

 

 

Impedance

300

1K

ohm

 

 

 

Frequency response

600

16k

Hz

• There are two ways to adjust the microphone volume.

• Adjust the microphone volume level in the Setup > Mic Volume menu.

• Press the Volume key on the keypad or remote to adjust the volume of the projector speaker and audio-out signal.

• The microphone will work regardless of whether the projector is turned on or soft-powered off, if the Always-On function “Microphone” is set to On.

• If the microphone is not working, check the volume setting and cable connection.

You might get feedback noise from the microphone when you are too close to the speaker of the projector. Move the microphone away from the speaker of the projector. The greater volume you require, the greater distance you need to be away from the speaker to prevent feedback noise.

NOTE: Only Dynamic Microphones should be used. Do not use active (phantom- powered) microphones as projector damage may occur.

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Contents 010-0752-02 Canada Declaration of ConformityTrademarks FCC WarningTable of Contents Important Operating Considerations for Safety Online registration Product specificationsAccessories IntroductionConnector panel Width Positioning the projectorDiagonal Screen SizeVGA connection Connecting a computer sourceConnecting power USB Mini B connectionDisplaying an image Adjusting the image What is Aspect Ratio? 43 screen1610 screen 43 mode 1610 mode Native mode Component video connection Connecting a video deviceVideo device connections Composite video connectionWand Position and Avoiding Shadows Charging the Wand’s BatteryHow to Use the Wand LiteBoard WandBattery Light Using More than One WandWand Features How to Hold the WandLiteBoard Wand Menu USB ConnectorReset Button Lithium Battery InformationTroubleshooting LiteBoard Screen Save Time Troubleshooting your setupTable 2 Status indicator light behavior and meaning Shutting down the projectorUSB A USB mini B Startup Screen AStartup Screen Restart laptopPage Green Gain For a laptop, disable laptop monitor or turn- on dual-display modeAdjust horizontal or vertical position in Advanced Picture menu Red GainAspect Ratio Correct imageMaximum SharpnessCOLOR COLORStartup Screen Lamp light Startup ScreenTroubleshooting the remote Using the remote controlUsing the audio Using the projector’s speakersTroubleshooting Audio Parameter Playing sound through the projectorAbout the microphone input SignalUsing the keypad buttons Optimizing computer images Presentation featuresOptimizing video images Customizing the projectorDynamic Messaging Using the menus Basic Picture menu Advanced Picture menu Network Factory Reset... Performs factory reset Setup menuDisable Snapshot allows the user to disable the snapshot capability To change the PIN To enter the PIN at projector startupStatus and Service menu Displaying JPEG images Using LitePortTo display the PtG presentation Troubleshooting LitePortDisplaying PtG presentations To convert a PowerPoint presentation to a PtG presentationDefault Password LiteShowSetting up a LAN connection LoginSystem Status Admin MenuLiteShow Menu Options DownloadAMX Control System Enable control by AMX systems Menu Sample Basic Projector Control menu Menu Sample Admin Network menuLiteShow Download menu LiteShow Shortcut Downloading the LiteShow UtilityTo display your computer/PDA image over the LAN LiteShow Moderator Control To moderate multiple usersTo control the projected image LiteShow ToolbarMaintenance Cleaning the lensUsing the security lock Replacing the projection lamp 1 Turn off the projector and unplug the power cord INDEX Numerics