Xenyx 1002FX hums with just my yorkville speaker connected and no components. I am using a 1/4 jack to XLR plug to connect my mixer 1/4 to my speaker XLR. My power supply is only a two prong power cord/transformer which is how it came for the Xenyx. I even removed my ground on the yorkville speaker, still - loud hum. (thinking it was a ground loop. When I plug my pioneer 3 prong mixer in.... no noise. Both the speaker and mixer is plugged into the same surge protected strip. Any Suggestions? Is it a dirty transformer and how would I ground the mixer since it only has two prongs. I even put a radio shack isolator between my mixer and speaker connection. Still, no difference (hummmmm)
SOURCE: My laptop is feeding through
Try hooking your mixer up to your Mackies without the laptop. Does the hum go away? Try hooking your laptop output up to the Mackies without the mixer. Does the hum go away? Make sure that all your power cables run from the same outlet and have the ground or third pin intact on the plug. Also make sure that you are using shielded cables for any connection that carries an audio signal. This includes the cables going to your Mackies as they are powered amplified monitors. Make sure that the cables to your Mackies are balanced and haven't been altered to unbalanced. You will need to use unbalanced cables from your laptop unfortunately but try to find ones with a shield and three conductors ( right and left signals and a common or ground) that have a separate shield from the common. The shield should only be connected to common at the output of the device where the signal starts. A better explanation is at these links:http://www.epanorama.net/documents/groundloop/ also http://www.epanorama.net/documents/groundloop/cable_shielding.html
SOURCE: hi i would like to
by in ear monitor I assume you are talking about a set of stereo headphones.
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These would plug into the PHONES jack, which is located just to the left of the MAIN OUT jacks.
If your headphones have a 1/8 inch jack, you will require a 1/8 inch female to 1/4 inch male stereo adapter.
These are fairly common, and can usually be purchased at any audio store or Radio Shack or The Source by Circuit City.
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Hi Michael Turner, This may be the transformer for the mixer , can you meter test the transformers output ? Or have another AC adapter with equal volt / Amp and plug output to test with ?
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