Improve this question. If possible, please share more information to allow for more specific help. Like, what kind of amp do you have? What kind of instrument are you using with the amp? Are you using any pedals? Does it still hum if you use the laptop on battery i. It's also worth checking the shielding in your guitar. If the amp buzzes more when your guitar is plugged in vs.
You can also try a shielded cable. Cables are a common culprit. Switch them out one by one to make sure any one of them is not the source of the noise. You could also consider a noise gate pedal. It could also help out with any debilitating noise you may have. Show 1 more comment. Active Oldest Votes.
Improve this answer. If your guitar is equipped with three single-coils and a 5-way selector switch, set the switch to position 2 or 4. This should hopefully cancel out the hum. Active Pickups : When the battery supplying these pickups starts to die, it can induce distortion.
These can be problematic when they are not functioning correctly. Lights : Neon lights, fluorescent lights and dimmer switches cause a buzz through the power supply. Preamp Valves : You may need to replace the preamp valves to resolve unwanted sounds. An amplifier buzzing sound is normally created by an ungrounded AC power supply, ground loops, AC line noise, RF interference, cable noise, or from devices such as the audio source, pedalboards, FX units, microphones, or guitars.
The good news is, all these issues can be fixed. A ground loop is the number one cause of amp buzz, and it occurs when audio devices are connected through different paths to a common ground. The issue with this is that it creates a single-loop antenna that is susceptible to noise via electromagnetic induction.
For example, if you plug your amp and your sound source into different electrical outlets, a ground loop is likely to occur. An easy way to know if you are struggling with a ground loop is if you notice a loud buzz or hum coming through the speakers as well, or scrolling bands on a TV screen if a TV is connected. Use a Single Power Source: To fix ground loop issues, you need to remove the loop, and the easiest way to do so is to power everything through a single AC socket like shown below:.
However, some of these devices actually remove the ground connection so you should be careful. Remove Third Power Prong Ground : Many people will tell you that you can also remove the third prong ground prong from your amplifier. While this might fix the problem. If the amplifier is highly sensitive and the wiring feeding is not adequately shielded, this can be a more serious concern. However, there are instances, depending on the amount of AC the amp is picking up from the environment, the buzzing sound can adversely compromise the quality of your music listening experience.
For this reason, there is no one-fit-all approach for fixing this problem. The homemade guitar I built had a massive reduction in noise when I shielded the electronics this way.
One potential option for removing any noise is to use a pedal. Note gates and suppressors are commonly used when playing live to give you more control over your tone and avoid feedback, hum and buzzing. A noise gate or suppressor is the next best thing and can make a big difference in your tone. Noise suppressors work by filtering out noise in your tone. The NS-2 allows you to dial in the noise threshold and decay which gives you plenty of control over how much noise you filter out.
Noise gates like The Silencer by Electro-Harmonix work by cutting the signal when the volume lowers past a certain threshold. This means when you stop playing, instead of hearing hum or buzz, you will hear silence. Then when you start playing again, the noise gate deactivates and you have your untouched tone.
A pedal like this can also be used to control effects loops which is a nice option if you have some noisy pedals. The idea is that you can create an effects loop that you can activate and deactivate by toggling the noise gate on and off. So instead of having to hit multiple pedals, you simply hit one and you can activate or deactivate the entire effects loop.
If you want to learn more about noise suppressors, noise gates and other useful tools you can add to your rig, check out the Guitar Effects Course here.
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