So my mate's Shure GLXD16 wireless receiver's power supply conked out at a show recently after the heat shrink part after the block frayed and gave out. He's looking for a replacement one but most seem to be 9-12v, and I think this one runs off a 15v adaptor? He tried a 9v one in rehearsal over the weekend and he had buzzing sounds throughout his signal. Switched heads to start as we thought it was the amp, and then to a cable before it stopped.
I'm guessing these wireless receiver's use a lot of power and it'd need more than a standard 9v adaptor?
Comments
Some cheap switch mode power supplies will give switching noise and other noise because they are built and sold for peanuts with a lot of important things left out like EMC shielding, AC and DC side isolation ....some have huge ripple voltages sat on top the wanted 9V .... Never use a cheap one from Amazon or Ebay and connect it to something important.
We checked all the other connections and the buzzing noise only went away when we took the wireless out the equation.
I ran mine of a pedal board PS for a long time without issues, for a total peace of mind tho just order a shure replacement.