LightSpeed Technologies 780iR user manual Rear Panel Controls

Rear Panel Controls

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1.SPEAKERS (1-6) Volume Controls: These knobs control the output volume of each corresponding speaker. The volume level is preset in the middle position at the factory. LightSPEED recommends leaving the volumes at this level for uniform sound throughout the classroom.

2.SPEAKER OUTPUT (1-6): These 1/4” jacks are used to connect speaker cable from the loudspeakers to the LES 780iR.

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3.DC POWER: The LES 780iR uses

an AC to DC power converter to supply power to the amplifier.

4.FM OUT & AUX OUT: These output jacks send the processed signal to external equipment—for example, a tape recorder or an assistive listening device like LightSPEED’s LES 370 Personal FM System.

5.ADJ: These knobs control the output level of the audio source being sent out of the unit via the FM OUT & AUX OUT jacks.

6.MIC CHARGE: These jacks are

used to connect the charging cable to the LightMic or a handheld microphone for daily battery charging.

7.FILTERS: These speaker filters are cov- ered with a speaker indicator label and are factory preset for optimum perfor- mance. If you have any questions about these filters or their settings please call LightSPEED.

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8.AUDIO INPUTS (TV/VCR, CD/TAPE, COMPUTER, AUX): These RCA input jacks receive audio input from external audio sources (TV/VCR, CD/tape, computer, etc).

9.EQUALIZATION: The three frequency equalization adjustments are factory set for normal classroom environment.

•LOW: Controls low-frequency.

•MID: Controls mid-frequency.

•HIGH: Controls high-frequency.

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10.SENSOR INPUTS: The cable from the IR sensor connects to any of these six inputs. Up to six IR sensors can be connected to the LES 780iR for use in large or odd shape classrooms.

11.SENSOR SHORT: If there is a short in one of the sensor cables, this LED glows as a warning signal.

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