LightSpeed Technologies 820iR, User Manual

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8 2 0 i R U s e r M a n u a l
13 | 820iR User Manual
3. IR SENSOR INSTALLATION
Sensor location is very important for optimum performance of the 820iR Classroom
Audio System.
• BEST: On the ceiling at or near the middle of the classroom.
• GOOD: High and centered on the long wall.
• AVOID: Locations in corners, on walls at heights lower than 7 feet, or in places
where the line of sight is or could be obstructed.
Before adjusting the graphic equalizer refer to the intial set-up on page 22.
Sometimes fine-tuning is required to eliminate feedback.
Fine-tuning the Graphic Equalizer:
1. Slide
up and flip down the EQ cover door.
2. Walk
the room listening for feedback (squealing).
3. Lower
the 2K5 and/or 4K sliders if a high-pitched ring is present.
4. Lower
the 400 and/or 700 sliders if a low-pitched ring is present.
5. Reduce volume if feedback is still present.
Helpful Hint
Good placement
Best placement
Avoid!