Speaker wire is often the culprit behind crackly speakers.
Speakers are devices that translate the signals sent from an audio source (like a CD player or TV) into audible sound waves. Occasionally, when there are some problems in the connection between the speakers and the audio device, or the speakers are incorrectly calibrated, there will be some static or crackly sounds coming from the speakers. Correcting the problem may be as simple as fine-tuning the control knobs or cleaning the speaker wires.
Instructions
1. Listen to the audio and try to isolate when the speakers are making the crackly noises. Is it constant throughout the audio? When you adjust the frequency settings? This will determine the correct course of action when dealing with the crackly sounds.
2. Adjust some of the frequency knobs on the audio tuner. Use subtle changes at first. Some older audio tuners occasionally sound crackly when the knobs are placed in between settings
3. Look at the wiring, both in the back of the speakers (black and red input jacks known as speaker terminals) and in the audio device. Remove the wire from the respective devices.
4. Soak a cotton swab in alcohol and rub the swab over the exposed metal wires in the speaker wires.
5. Reattach the wires to the speakers. If they are bare wire connectors, pull the end of the wire into two pieces and tighten them onto the speaker terminal. If they are plugs, press them firmly into the input jacks. Pay attention to which wire connects to the red terminal and which connects to the black terminal; their placement should correspond to the terminals on the audio device.
6. Purchase and install new speaker wire if the problem persists. To determine the correct wire gauge (size), measure the distance between the audio device and the furthest speakers. If the distance is greater than 80 feet, use 14 gauge wire, otherwise use 16 gauge wire (the small the gauge number, the thicker the wire).
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