This page lists each device or control location where audio levels can be changed. It also lists the appropriate setting for each volume control. Use this document to learn which volume controls can be used to adjust the sound if the level is too loud or too quiet for your preference. Keep in mind that not all media sources are recorded at that same level, and it may be wise to test the volume with multiple video or audio files.
Each classroom's teaching station has multiple points by which to control sound that comes through the speakers:
|Installed PC Computer Volume (speaker icon in system tray in Windows, or Title Bar on Mac).||graphic slider or fader||Set computer's volume level between 3/4 (75%) and Maximum (100%).|
|Computer laptop keyboard volume controls (speaker icon key, upper right of keyboard, above - and + keys on Mac; F6 and F7 on HP Elitebook, others vary by make and model).||One button for increase, one button for decrease (and some laptops have one additional button for mute)||Press button repeatedly until setting is at or near maximum. If it is too loud, this is the volume setting you'll need to remember when you connect in various rooms.|| |
|Volume knob on top of the teaching station. This should be your default variable control.||Four green LEDs, one amber LED, one red LED||Turn knob clockwise until all the green LEDs are lit.|
|Volume knob #1 (microphone 1) on Extron audio mixer, down at knee level in the front of the teaching station.||Four green LEDs||Turn clockwise until three (3) LEDs are lit.|
|Volume knob #3 (aux) on Extron audio mixer, down at knee level in the front of the teaching station. This affects all of the program audio levels, but not the microphone level.||Four green LEDs||Turn clockwise until two (2) LEDs are lit.|
|Volume knob #4 (Master) on Extron audio mixer, down at knee level in the front of the teaching station. This controls both the program audio and the microphone audio.||Four green LEDs||Turn clockwise until three (3) LEDs are lit.|
|Volume knobs on stereo amplifier in bottom of cart should be in a straight up (noon) position.||Black knob with white line for input level indicator. One knob is for left speaker(s), and one is for right speaker(s).||Turn clockwise until indicator is straight up (noon) position 50%.|
|Extron TouchLink Touch Panel controllers will have a button for volume up and a button for volume down.||A vertical bar on the right side of the touch panel will indicate current volume level.||Press the volume up button repeatedly until setting is at or near minimum. If it is too quiet, press the volume up button until volume is appropriate level.|
The goal is to be able to control all volume settings using only the readily available volume knob located on the keypad on top of the teaching station, on the wall, or with the buttons on the TouchLink controller.
The volume settings recommended above will provide enough dynamic range to allow for quiet audio sources to be
turned up loud enough to hear, and for loud devices to be turned down, using only the volume controls provided.
If the volume knob on top of the cart doesn't provide enough gain, and your source volume (like PC volume) is at it's maximum setting, try to increase the #3 Aux volume knob on the Extron audio mixer, located in the teaching station.
Each classroom's teaching station has multiple volume controls. Some are accessible to the user, while others have restricted access. Specifically, the AV switcher/scaler has volume settings that could be set for each input and output, but which have not been altered from the factory default, and do not need to be changed given the current set of input sources. Only qualified IMT technicians should attempt to change these internal volume settings.
Conference rooms, labs, and nursing wards that have a flat panel TV should control volume with the TV's accompanying remote control, or with their laptop keyboard buttons. Some of these rooms will have a wall-mounted Media Link Controller that includes the volume knob.
In some rooms--those in which the teaching station is on wheels--If the user is trying to connect an HDMI source (which includes audio and video on the same cable), teaching stations are not currently configured to pass HDMI sources through to the projectors or flat-panel TVs. The equipment in these rooms are 'digital-ready,' but are not fully digital systems. These will become fully digital with the next technology refresh.
If you find that you are not able to adjust the volume using the above controls, or if other sound related problems remain, please consult the Sound Troubleshooting page. Additionally, there may be some known issues pages that can provide workarounds.
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