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Qtx KAD-2 - User Manual

Qtx KAD-2
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KAD-2
DIGITAL STEREO AMPLIFIER with BLUETOOTH™
Item ref: 103.122UK
User Manual
Specifications:
Power Supply 230Vac, 50Hz (IEC)
Output Impedance 4 - 8Ω
Output Power (8Ω) 2 x 25W rms / 2 x 40W max. (EIAJ Standard @ 1kHz 10% THD)
Output Power (4Ω) 2 x 35W rms / 2 x 55W max. (EIAJ Standard @ 1kHz 10% THD)
Input sensitivity : line 380mV
Input sensitivity : mic 15mV
Dimensions 200 x 200 x 65mm
Weight 1.6kg

Questions and Answers

  • M
    Mr. James Perez MDAug 13, 2025
    What to do if my Qtx Amplifier has no power?
    • C
      Craig ReedAug 13, 2025
      If your Qtx Amplifier isn't powering on, try these steps: * Make sure the mains switch is on and the power lead is in good condition, fully inserted into the wall socket. * Check that the IEC plug is fully inserted into the amplifier on the back. * Confirm the power switch on the amplifier is turned on. * Inspect the fuse. If the fuse blows frequently, discontinue use immediately and consult qualified personnel for repair.
  • M
    Matthew ShepardAug 17, 2025
    Why is there no music output from my Qtx KAD-2 Amplifier?
    • G
      Gary TorresAug 17, 2025
      If you're not getting any music output from your Qtx Amplifier, consider the following: * Ensure the input connection lead is fully inserted into both the amplifier and the audio source. * Verify that the correct input is selected on the amplifier. * Confirm that the audio source is actually playing. * Check that the volume is turned up on both the amplifier and the audio source. * Inspect the speaker cable for damage, ensure the ends are stripped, and that it's properly connected to both the amplifier and the speakers. * Look for any loose strands on the speaker cable that might be touching the positive and negative terminals, as this can trigger short circuit protection.
  • C
    Cody SantanaAug 20, 2025
    What to do if there is disrupted output on Qtx KAD-2 Amplifier?
    • A
      abonillaAug 21, 2025
      If the output from your Qtx Amplifier is disrupted, try the following: * Check that the output volume isn't too high on either the audio source or the amplifier. * Inspect the speaker cable and connection leads for any signs of damage. * Ensure that the amplifier, audio device, speakers, and connection cables are not near any mains power cables or large inductive appliances like refrigerators. * If using Bluetooth, verify that the Bluetooth device is within the reception range of the amplifier. Note that the range may be reduced in areas with many electronic or wireless devices.
  • K
    kingkevinAug 25, 2025
    How to fix no mic output on Qtx Amplifier?
    • S
      Susan AdamsAug 25, 2025
      If you're experiencing no mic output on your Qtx Amplifier: * Make sure the microphone is switched on. * Check that the microphone volume is turned up on the amplifier. * Determine if the microphone requires phantom power. * Test the microphone on another device to ensure it's working properly.
  • I
    Isaiah SnyderAug 28, 2025
    What causes diminishing output on Qtx KAD-2?
    • L
      Laura NixonAug 28, 2025
      If you notice diminishing output from your Qtx Amplifier, check these: * Verify that the speaker polarity is connected correctly. * Ensure the audio source or media player volume is turned up. * Confirm that the impedance of the speaker(s) is within the specified range.
  • D
    dixonkaylaSep 1, 2025
    Why I am unable to connect to Bluetooth on Qtx KAD-2 Amplifier?
    • C
      Christopher FrancoSep 1, 2025
      If you're having trouble connecting to Bluetooth on your Qtx Amplifier: * Ensure that the Bluetooth function is switched on for the device you are trying to connect. * Try restarting both the amplifier and the Bluetooth device.
  • P
    Penny BoothSep 5, 2025
    What to do if Qtx KAD-2 Amplifier unable to play USB or SD?
    • B
      Brian FarmerSep 5, 2025
      If your Qtx Amplifier is unable to play USB or SD: * Make sure all files are saved on the root level of the USB/SD and are not hidden within folders. * Ensure that the audio files are saved in MP3 format.
  • P
    pettykristiSep 8, 2025
    Why is FM radio not working on my Qtx KAD-2?
    • C
      Chelsea UnderwoodSep 8, 2025
      If the FM radio is not working on your Qtx Amplifier: * Ensure the amplifier isn't located near electronic devices like large transformers, fridges, or microwaves. * Make sure the volume on both the amplifier and the media player are turned up. * Check the condition of the FM antenna.

Summary

Specifications

Power Supply and Output Details

Power requirements, impedance, and output power.

Input and Physical Specifications

Input sensitivity for line/mic and physical dimensions/weight.

Impedance Matching

Speaker Wiring Configurations

Explains parallel and series speaker connections for impedance matching.

Installation and Media Player Usage

Connecting the Amplifier

Guide on wiring speakers, audio input, and power connection.

Media Player Features

Details on using MP3, Bluetooth, and FM radio modes.

Troubleshooting Common Issues

Power and Audio Output Problems

Solutions for no power, no music, diminishing, or disrupted audio output.

Microphone and Connectivity Issues

Troubleshooting mic output, Bluetooth connection, and USB/SD playback.

FM Radio Troubleshooting

Tips for resolving issues when the FM radio is not functioning correctly.

Qtx KAD-2 Specifications

General IconGeneral
BrandQtx
ModelKAD-2
CategoryAmplifier
LanguageEnglish

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