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Stage lighting and sound common knowledge

666 2018-06-12 Winpower
the device has a housing inspection order electrification equipment enclosure charged - the power supply line for damage - phase line is correct - the device is properly grounded - Use the correct voltage

1, the device has a housing inspection order electrification equipment enclosure charged - the power supply line for damage - phase line is correct - the device is properly grounded - Use the correct voltage

2, audio system volume inadequate
Equipment insufficient volume - amplifier and speaker line level settings are correct - the speaker cables are securely connected - amplifier and speaker phase are the same - whether it is appropriate amplitude attenuation equalizer - whether the pressure limiter from the control level just
3, resonance and acoustic feedback occurs Field
Resonance and acoustic feedback - to check whether there is room frequency response peaks - Rooms and decorative structure is reasonable - gain crossover frequency and bass are reasonable - the room reverberation time is too long
4, noise interference
Sound system noise - Dimming interference - sound and lighting power is separate - lighting power and control from the audio signal line is too close to the line - whether silicon from me too close to the audio device
Speaker system noise - signal transmission is reasonable - blocking all signal lines is appropriate - a ground signal is correct - all audio equipment supply phase consistent
5, the lights out of control
Lights out of control - the controller program is correct - lamps address coding is correct - control line connection is correct - shielded control cable is bad or disturbed - limit adjusted lighting is appropriate - powered light switch contact is good
6, light bulbs often damage the computer (750 hours)
Perishable bulb - installation firm if contaminated dust and moisture - heat lamp is good - the voltage is normal - the power switch is frequently
7, the video image is not normal
Video image is not normal - standard program is correct - if the equipment enclosure charged - whether they are high-level signals shielding interference - projection tubes are normal - LCD projector bulb performance is poor
8, wireless microphone sound unstable
Sound is unstable - whether high-frequency interference sources within the system - the antenna is properly connected - to fine-tune the receiver correctly - whether the number of excess microphone - microphone battery is low.

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