Technical Pro IAW852 Integrated Amplifier with Dual Wireless Microphones User Manual

1. Introduction

Thank you for purchasing the Technical Pro IAW852 Integrated Amplifier. This manual provides essential information for the proper setup, operation, and maintenance of your amplifier. Please read this manual thoroughly before using the product to ensure optimal performance and safety. Keep this manual for future reference.

2. Safety Instructions

• Power Source: Connect the unit only to an AC power outlet of the specified voltage (110-220V switchable). Ensure the voltage switch is set correctly for your region before plugging in.
• Ventilation: Ensure adequate ventilation around the unit. Do not block ventilation openings. Avoid placing the unit on carpets or in enclosed spaces that may restrict airflow.
• Water and Moisture: To reduce the risk of fire or electric shock, do not expose this appliance to rain or moisture. Do not place objects filled with liquids, such as vases, on the apparatus.
• Heat: Do not place the unit near heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
• Cleaning: Unplug the unit from the wall outlet before cleaning. Use a dry cloth for cleaning. Do not use liquid cleaners or aerosol cleaners.
• Servicing: Do not attempt to service this product yourself. Refer all servicing to qualified service personnel.

3. Package Contents

Verify that all items are present in the package:

• Technical Pro IAW852 Integrated Amplifier
• Two (2) VHF High Band Wireless Microphones
• Power Cable
• Audio Input Cable (for 'i' Device / MP3 input)
• User Manual (this document)

4. Product Overview

4.1 Front Panel Controls

The image above displays the front panel of the Technical Pro IAW852 amplifier, featuring the main controls and inputs. Two wireless microphones are shown resting on top of the unit. Key features include the central fluorescent output display meter, master volume knob, and various input selectors and tone controls.

This close-up view highlights the detailed controls on the front panel. From left to right, you can see the power switch, treble and bass controls for the main audio, speaker selector (A, B, A+B), and microphone controls for volume, echo, bass, and treble. The central digital fluorescent output display meter provides visual feedback on audio levels. Input selection buttons for VCD, CD, MP3, and AUX are also visible, along with mute controls.

• Power Switch: Turns the amplifier on or off.
• Input Selectors (VCD, CD, MP3, AUX): Choose the desired audio source.
• Mute Controls: Mute/unmute audio output.
• Treble/Bass Controls: Adjust the high and low frequencies of the main audio output.
• Speaker Selector (A, B, A+B): Select which speaker outputs are active.
• Master Volume: Controls the overall output volume of the amplifier.
• Fluorescent Output Display Meter: Provides a visual representation of the audio output level.
• Mic Input (MIC1, MIC2): Connect wired microphones.
• Mic Controls (Volume, Echo, Bass, Treble): Adjust the sound characteristics of the connected microphones.
• MP3 Input: Front panel input for portable audio devices.

4.2 Rear Panel Connections

The rear panel of the IAW852 amplifier features all the necessary connections for speakers, audio sources, and recording devices. The wireless mic antenna is also located here. The model number IAW852 is clearly indicated.

• Wireless Mic Antenna: For receiving signals from the wireless microphones. Ensure it is extended for optimal reception.
• Audio Inputs (MP3, VCD, CD, AUX): RCA stereo inputs for connecting various audio sources.
• Record Out (RCA): Stereo RCA output for connecting to a recording device.
• Speaker Outputs (A, B): Banana binding posts for connecting up to four speakers (4-8 Ω impedance).
• Power Input: Connects to the AC power cable.
• Voltage Selector (110V/220V): Switch to select the appropriate voltage for your region.

5. Setup

5.1 Connecting Speakers

1. Ensure the amplifier is powered off and unplugged.
2. Connect your speakers to the Speaker Output A and/or Speaker Output B banana binding posts on the rear panel.
3. Match the positive (+) terminal of the speaker to the red (+) terminal on the amplifier, and the negative (-) terminal of the speaker to the black (-) terminal on the amplifier.
4. Ensure your speakers have an impedance between 4-8 Ω.

5.2 Connecting Audio Sources

1. For devices like CD players, VCD players, or other audio equipment, connect their RCA stereo output to the corresponding VCD, CD, or AUX Input on the rear panel. Match red to red (right channel) and white/black to white/black (left channel).
2. For portable MP3 players or 'i' devices, use the provided cable to connect the device's headphone output to the MP3 Input on the front panel.

5.3 Connecting Microphones

1. Wireless Microphones: Extend the wireless mic antenna on the rear panel for optimal reception. Insert batteries into the wireless microphones. The microphones will automatically connect to the amplifier.
2. Wired Microphones: If using wired microphones, plug them into the MIC1 or MIC2 inputs on the front panel.

5.4 Power Connection

1. Before plugging in, ensure the Voltage Selector switch on the rear panel is set to the correct voltage for your region (110V or 220V).
2. Connect the power cable to the amplifier's power input and then to a suitable AC wall outlet.

6. Operating Instructions

6.1 Basic Operation

1. Press the Power Switch on the front panel to turn on the amplifier. The fluorescent display meter will illuminate.
2. Rotate the Master Volume knob counter-clockwise to its minimum position before playing any audio to avoid sudden loud sounds.
3. Select your desired audio source using the Input Selector buttons (VCD, CD, MP3, AUX).
4. Start playing audio from your selected source.
5. Slowly increase the Master Volume to your desired listening level.

6.2 Audio Source Control

• Use the Treble and Bass knobs to adjust the tone of the main audio output to your preference.
• The Mute buttons can temporarily silence the audio output.

6.3 Microphone Usage

• Turn on the wireless microphones.
• Adjust the Mic Volume knob to control the microphone's output level.
• Use the Mic Echo knob to add an echo effect to the microphone sound.
• Adjust the Mic Bass and Mic Treble knobs to fine-tune the microphone's tone.

6.4 Output Control

• Use the Speaker Selector buttons (A, B, A+B) to choose which set of speakers (or both) will output sound.
• The Record Out RCA ports provide a line-level output for connecting to a recording device, allowing you to record your audio mix.

7. Maintenance

• Cleaning: Regularly wipe the unit with a soft, dry cloth. Do not use abrasive cleaners, waxes, or solvents.
• Ventilation: Ensure the cooling fan and ventilation openings are free from dust and obstructions. Periodically clean dust from these areas using a soft brush or compressed air.
• Storage: If storing the unit for an extended period, unplug it from the power outlet and store it in a cool, dry place.

8. Troubleshooting

If you encounter any issues with your Technical Pro IAW852 amplifier, please refer to the following common problems and solutions:

• No Power:
  • Check if the power cable is securely connected to both the amplifier and the wall outlet.
  • Ensure the power switch on the front panel is in the 'ON' position.
  • Verify the voltage selector switch on the rear panel is set correctly (110V or 220V) for your region.
  • Test the wall outlet with another device to confirm it has power.
• No Sound Output:
  • Check that the correct audio input source is selected (VCD, CD, MP3, AUX).
  • Ensure the Master Volume knob is turned up.
  • Verify that the speaker cables are correctly connected to both the amplifier and the speakers, with correct polarity (+ to + and - to -).
  • Confirm that the Speaker Selector (A, B, or A+B) is engaged for the connected speakers.
  • Check if the Mute function is active.
  • Ensure the audio source device is playing and its volume is turned up.
• Wireless Microphones Not Working:
  • Ensure the wireless mic antenna on the rear panel is fully extended.
  • Check the batteries in the wireless microphones and replace them if necessary.
  • Verify the Mic Volume knob on the amplifier is turned up.
  • Ensure there are no strong sources of interference nearby.
• Distorted Sound:
  • Reduce the Master Volume or the volume of the audio source.
  • Check speaker connections for loose wires or incorrect polarity.
  • Ensure the input signal is not too strong, which can cause clipping.
• Humming or Buzzing Noise:
  • Ensure all audio cables are securely connected.
  • Try moving the amplifier or audio cables away from other electronic devices that might cause interference.
  • Check for proper grounding of all connected equipment.

9. Specifications

10. Warranty Information

The Technical Pro IAW852 Integrated Amplifier comes with a 1-Year Limited Warranty from the date of purchase. This warranty covers manufacturing defects in materials and workmanship under normal use. It does not cover damage caused by misuse, accident, unauthorized modification, or improper installation. Please retain your proof of purchase for warranty claims.

11. Customer Support

For technical assistance, warranty service, or general inquiries regarding your Technical Pro IAW852 amplifier, please contact Technical Pro customer support. Refer to the official Technical Pro website or your purchase documentation for the most current contact information.