Over time, it's not uncommon for speaker cables to loosen. Go ahead and inspect the cables running from the amplifier to the speaker, looking for damage in the shielding, corrosion, or general wear. If the current is interrupted, however, it can cause popping and/or crackling sounds, which in turn stresses the speakers while also making them susceptible to damage. Power is needed to move the air around in the speakers and produce sound. Speakers, as you probably know already, require power. One of the most common causes of popping and crackling sounds from motorcycle speakers is an interrupted current. If you hear a popping or crackling sound, avoid using your speakers until you've identified and fixed the problem.
Furthermore, popping and crackling can physically damage or even ruin your speakers. No one wants to hear these sounds when they are trying to listen to an MP3 or radio station. For starters, popping and crackling affects the quality of sound produced by your speakers. Let's first discuss why these sounds are bad. So, what causes this phenomenon and how to you prevent it from happening again? Regardless of your setup, speakers should not produce a popping or crackling sound. If nothing helps, you may need preamp service.Have you noticed one or more of your motorcycle or car stereo speakers emitting a “popping” or “crackling” sound? You don't have to an audio wiz to know that sounds such as this aren't normal. Also tray exercising all switches and controls on the preamp. If the problem didn't move when you swapped the source, try a different source and see if the problem still exists. Yes: you have a problem with your source, perhaps cartridge head shell connections, or other connections at the turntable. No: you may have a preamp problem (see next step) Turn the volume down first! Does the problem move? Swap the input connections at the preamp from your source (turntable). Put the preamp output connections back to normal. No: You have problem with the interconnect cable between the preamp and power amp Swap the connections at the preamp output. Put the input connections at the power amp back to normal (power off first!) Swap the input connections at the power amp (turn it off first!) No: you have a speaker wire or speaker connection issue Swap the speaker wires at the output of the power amp. Put the speakers back to ordinal connections. Here's a bit of trouble shooting to try (you've done some of it):
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