If the source cannot be identified or has been identified but cannot be eliminated, a grounded power supply (one that has ground connectors) should help. at another house or studio) to see if the issue still exists. If it is still not possible to identify the cause of the hum or buzz, we recommend testing the device at a different location (e.g. Alternatively, disconnect all of them and then reconnect them one by one in order to identify which one is causing the problem. Nearby Electrical DevicesĮliminate the possible sources by disconnecting nearby electrical devices one by one. You may also have to separate polarized plugs (two-prong) from grounded plugs (three prong), by connecting them to separate circuits. Note that even if the power supply of your laptop computer is not connected, your setup may still be vulnerable to ground noise from an external device with its own power supply.Īll devices that are physically connected to each other should share the same power outlet. Shared Power OutletĪlways connect your devices to the same power outlet (e.g. If you are going to use a replacement power supply unit, make sure that its specifications meet the ones required by your computer in order to avoid permanent damage. Disconnect your computer from your power supply so that it runs on battery power and verify if this resolves the issue. Power SupplyĪ low quality power supply unit can lead to ground loop noise, particularly on laptops. Some devices offer a switch for this whereas others may require a modified audio cable or a DI-Box (see Balanced Cables and DI Box chapters at the bottom of this article). Never lift the ground of the power connection!Ĭontact the manufacturer of your device before lifting the ground to find out if ground lifting is supported on your device. If you find the device that introduces the ground loop, a ground lift of the audio connection may solve the issue. To check if the amplifier or active monitors create the ground loop, monitor your audio signal from the headphones output of your device (while the amplifier/active monitors are disconnected). external harddrives, MIDI controllers, etc.). This applies to all peripheral devices you may have connected (e.g. from your computer, mixer or MASCHINE+) but not the amplifier and / or speakers. In order to find out where the ground loop arises, disconnect all peripheries from your main device (i.e. The troubleshooting steps below outline the most common solutions. Resolving a ground loop requires some investigation. Electrical devices nearby such as fridges, electrical heaters, elevators, fans, dimmer switches, etc.Peripheral devices connected to your computer.This can be caused by devices that introduce an electric potential to the ground connection. An unwanted hum or buzz can be heard in the audio signal.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |