Logitech FAQ Resource Central

I believe every single problem has its causes. I am also a strong believer that not all problems can be solved.

Let's explore what could cause speakers to buzz. Every single soul who owns a set of multimedia speakers or any other audio systems will experience their device to be buzzing at least once in a lifetime. Don't believe me? Try putting your cell phone beside the satellite and before you receive a call or message, your satellite started to buzz and your monitor screen flickers.

Ok maybe that was not such a good example. Well, it was at least the fundamental idea of what could be causing the buzz - Interference. You may be asking this: "I don't have any cell phones or other cordless phones anywhere near my speakers. But I still hear buzzing." Remember, interference comes in many forms. If you experience the buzzing without any cordless devices near you, it could be coming from other places. Let's explore some of the other possibilities.

The most common interference or the cause of buzzing would be due to the electrical wiring or cabling in your house. This would consist 70% of the overall buzzing problems faced by Logitech speakers owners. I will try to explain this in the most Layman term as possible as I can.

If cabling is not grounded properly during construction, there are no terminating points for the electrical signals to "stop". Instead, it just kept bouncing back and forth colliding with one another. This creates current instability within your electrical wiring and increases the interference picked up by electrical appliances or devices. Ever experienced light dimming, flickering or speakers making a popping sound when you flipped a switch? Since the grounding is not done properly, this creates an electrical "spike"within the current and that's what causes the anomaly.

If you experienced any of those then it is possible that your house or apartment do not have proper electrical cabling installation. Chances of experiencing speakers buzzing is also higher. Since speakers have built in amplifiers, all interferences are amplified. This also explains why certain other electrical appliances may not exhibit such problems.

Here are some simple troubleshooting steps that you can perform to fix the problem:
- If experience speakers buzzing, try to disconnect the cables from your computer and connect just the power. Turn on the speakers.
- If buzzing persists, electrical problem is 80%
- Try to connect the speakers to a different power socket in a different room.
- If buzzing persists, most likely you have connected to the same power strip/ line. Try again in a different room upstairs.
- If buzzing persists, most likely the whole house is affected.
- Get an AVR (Automatic Voltage Regulator) or Surge Protector and connect the speakers. Usually this will rectify the buzzing problem.
- If problem persists then it could be a bad unit. Contact Logitech at this point for a resolution.