Debra AU-400 4 Channel Wireless Microphone System User Manual

Debra AU-400 4-Channel Wireless Microphone System

WELCOME
Thank you for purchasing the AU400 wireless microphone system. Please read this manual thoroughly to get the most out of the product and ensure long- term, trouble-free use. After reading this manual, keep it readily available for future reference.

WIRELESS FREEDOM, MADE SIMPLE
Jumping to wireless should be a liberation, not a challenge. Combining professional-quality sound with a simple setup and an intuitive interface, the D Debra Audio Wireless System delivers out-of-the-box performance you can count on. Precision manufactured and available in a variety of handheld, lavalier, and headphone configurations, it’s the most convenient way to have a stage, church, conference, party, or karaoke.

SPECIFICATIONS

• Squelch Control: Noise Lock

• Frequency Deviation: ‡18kHz

• Frequency Response: 80Hz-15kHz

• Frequency Stability : ‡0.005%

• S/N Ratio: >70db

• Total Harmonic Distortion: <0.5% (at 1kHz)

• Number of Channels : 2 Channels (or 4 Channels)

• Receiving Sensitivity : <90dB

• Operating Range: 100 meters in the best case

• Resonance Interfere Rate: ≥50dB

• False Image Interfere Rate : 250dB

• Receiver Power Supply: DC 110-120V/220-240

• Transmitter Power Supply: 1.5V Batteries

• Transmit Power: ≤10mW

• Frequency Range:
  

  • A : 501 Mhz/511.5 Mhz /524 Mhz /538.5 Mhz
  • B : 506 Mhz /517.5 Mhz /531 Mhz /546.5 Mhz

• Output Type: Separated or Mixed Output

MAIN FEATURES

4-channel UHF wireless microphone system

• D Debra Audio AU400 4 channel wireless microphone system. It can be matched with a handheld microphone, a lavalier microphone, or a head-mounted microphone as required. Their series of products adopt UHF frequency and use the international standard common frequency which can be used all over the world. Due to the low frequency and many reasons, traditional wireless microphones are usually disturbed by many factors, especially by the variety of harmonic which sent off by the CD/DVD/VCD/LD and other digital equipment.
• Squelch circuit usually analyzes the intensity of the RF frequency channel instead of the noise and the needed signal. Using the low traditional wireless microphone in a complex environment or when the signal of the microphone is weak or the microphone is closured, the squelch circuit may suddenly open which result in the receiver sending out a strong burst of noise.
• lt ideal for church, small DJ KJ stage, birthday wedding or family party, conference, classrooms, small karaoke night, etc.

INCLUDED ACCESSORIES

[4 Handheld Microphones]

• Receiver *1
• Handheld microphones *4
• Audio Cable*1
• Power plug *1
• User Manual Manual *1

[ 2 Handheld 2 Bodypack)

• Receiver *1
• Handheld Microphones *2
• Bodypack Transmitter *2
• Lavalier Microphone *2
• Headset Microphone *2
• Audio Cable *1
• Power plug *1
• User Manual Manual *1

[4 Bodypack]

• Receiver *1
• Bodypack Transmitter *4
• Lavalier Microphone *4
• Headset Microphone *4
• Audio Cable *1
• Power plug *1
• User Manual Manual *1

Quick Start Guide

1. STEP 1 Connecting speakers, microphones, instruments, etc.

   • Turn off the power of all speakers, instruments, and other devices to be connected to the wireless microphone system.
   • Connect speakers, microphones, and instruments referring to the connection example below.
     Connection Example NOTE: To prevent whistling or noise, please turn down the volume of the microphone svstem, speakers, mixer and other equipment to the minimum.
     

2. STEP 2 Use the microphone system correctly.

   • Make sure all switches, including the power switch, are not pressed.
   • Insert the 12V DC power plug. And the microphone or the bodypack Insert AA batteries.
   • Turn the volume knob to the left (minimum).
   • Make sure the volume of any other device is set to a minimum.
   • Power on the connected devices in the following order: audio devices such as wireless microphones, then the power switch for the mixer, then the powered monitor speakers, and finally the switch for the handheld microphone or bodypack. Note
   • Follow this sequence to avoid loud, unexpected noise from the speakers. When the power is turned off, the sequence is reversed.
   • Set the volume knob to the appropriate position as required.
   • Speak into the microphone, then adjust the volume of the other device.
   • If you hear no sound, or if you want to adjust the volume, follow the instructions in the box below.

If you still hear no sound after following the steps below, see the checklist in the Troubleshooting section at the back of this manual.

Function introduction

The Receivers:

1. Power ON/OFF Button and Power light For turning the power of the unit to power-on state and off state. The power light turns light, indicating that it is working.
   NOTICE: Rapidly switching the switch between on and standby in succession can cause the mixer to malfunction. After switching the switch to standby, wait for at least six seconds before turning it on again.

2. The receiver’s signal antenna. Try to keep the antenna vertical for better signal reception.

3. Level knobs Set the volume balance between each channel.

4. Signal indicator The Signal indicator, turns on the handheld microphone or bodypack, and the indicator of the corresponding channel is on, indicating that the handheld microphone or bodypack is connected to the receiver.

5. XLR balanced independent output Independent output XLR interface for each channel.

6. Mixed audio output(AUX outputs) 4 channel sound mix output.

7. 12VDC power input (100-240V)

The Handheld Microphone:

1. Power ON/MUTE/OFF Button and Power Light For turning the power of the unit to a power-on state, mute state mid-range), or power-off state. The power light turns green light, indicating that it is working. If the power light turns red when it working, it means the power is lower. You need to change the batteries.
2. Battery Compartment and Battery Cover 2*AA batteries provide up to 4-8 hours of continuous use (also supports AA rechargeable batteries)

The Bodypack and Lavalier Microphone or Headset Microphone:
Bodypack systems are designed for use with other devices such as lavalier microphones, instrument cables, headphone microphones, or other instrument microphones. When using other equipment, please pay attention to the specifications of the plug.

1. Battery Compartment and Battery Cover
   2*AA batteries provide up to 4-8 hours of continuous use (also supports AA rechargeable batteries)

2. Low Battery Indicator
   When the battery is low, the indicator light turns red. You need to replace the battery with a new one.

3. Switch and Volume Knob
   The Vonne evel. The tar rightist maximum vock me lever it left and right to adjust

4. Microphone Input
   3.5mm aux audio input. You can plug in a Lavalier microphone or a headset microphone. (Note that only a mono microphone plug will work.)

5. Transmitter Antenna

6. Lavaler microphones are Hards Minderbor microphones.

   • Reliable Wearable Microphones for Speaking Applications.
   • Headset microphones are cardioid condenser microphones. Comfortable, durable headset microphone for active performance applications.

Use suggestion tips

• Maintain a line-of-sight between the transmitter and receiver antennas.
• keep the receiver and antennas away from large metal objects.
• Avoid placing the receiver near computers or other RF-generating equipment.
• Point the receiver antennas straight up.
• Avoid placing the receiver in the bottom of an equipment rack unless the antennas are remotely located.

CAUTIONS AND WARNINGS

CAUTION : To reduce the risk of electric shock, do not remove the cover (or back).No user-serviceable parts inside. Only refer servicing to qualified service personnel.

WARNING

• The lightning flash & arrowhead symbol within an equilateral triangle is intended to alert you to the presence of danger.
• The exclamation point within an equilateral triangle is intended to alert you to the presence of important operating and servicing instructions.

WARNING
To reduce the risk of fire or electric shock, do not expose this unit to rain or moisture.

1. Read Instructions – All the safety and operating instructions should be read before the appliance is operated.
2. Retain instructions — The safety and operating instructions should be retained for future reference.
3. Heed Warnings — All warnings on the appliance and in the operating instructions should be adhered to.
4. Follow Instructions — All operating and use instructions should be followed.
5. Attachments — Do not use attachments not recommended by the product manufacturer as they may cause hazards.
6. Water and Moisture – Do not use this unit near water. For example, near a bathtub or in a wet basement and the like.
7. Carts and Stands — The appliance should be used only with a cart or stand that is recommended by the manufacturer.
   • An appliance and cart combination should be moved with care. Quick stops, excessive force, and uneven surfaces may cause an overturn.
8. Ventilation — The appliance should be situated so its location does not interfere with its proper ventilation. For example, the appliance should not be situated on a bed, sofa, rug, or similar surface that may block the ventilation slots.
9. Heat — The appliance should be situated away from heat sources such as radiators, heat registers, stoves, or other appliances (including amplifiers) that produce heat.
10. Power Sources — Precautions should be taken so that the grounding or polarization mis arked on the appliance.
11. Grounding or Polarization – Precautions should be taken so that the grounding or polarization means of the appliance is not defeated.
12. Power Cord Protection –The power cord should be routed so that it cannot be stepped on or pinched by objects placed or resting on it. Pay special attention to the wires on plugs, convenience sockets, and where they exit the device.
13. Cleaning — Unplug the unit from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners. Use a damp or dry cloth for cleaning.
14. Power Lines — An outdoor antenna should be located away from power lines.
15. Nonuse Periods — The power cord of the appliance should be unplugged from the outlet when left unused for a long period.
16. Object and Liquid Entry — Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings.
17. Damage Requiring Service — The appliance should be serviced by qualified service personnel when:
    • The power supply cord or plug has been damaged; or
    • Objects have fallen into the appliance; or
    • The appliance has been exposed to rain; or
    • The appliance does not appear to operate normally or exhibit a marked change in performance; or
    • The appliance has been dropped, or the enclosure damaged.
18. Servicing – The user should not attempt to service the appliance beyond that described in the operating instructions. All other servicing should be referred to qualified service personnel.

If you still have questions about the use, please contact our professional after-sales personnel.

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