Brendan Posted November 12, 2022 Share Posted November 12, 2022 Hello everyone, I turned on my stereo this morning and noticed a loud hum coming from one of my 5A's. I turned off the amp feeding that speaker, so i know its not related to the amp. I unplugged the speaker, turned off and on the power strip, etc. Could something have happened to the subwoofer amp inside the 5A? Thanks for any help, Best, Brendan 1 Quote Link to comment Share on other sites More sharing options...
Richard Vandersteen Posted November 13, 2022 Share Posted November 13, 2022 Remove the speaker wires from this speaker totally at the speaker. If the hum goes away it is not the sub-woofer amp in the speaker. If the hum remains the sub-woofer amp module needs to be rebuilt. Go to service on this site and download an RMA form and follow the instructions. RV 1 Quote Link to comment Share on other sites More sharing options...
Stringreen Posted November 13, 2022 Share Posted November 13, 2022 I too had a hum from my 5A's....I attached a ground wire (any wire you have around will do) from one of the silver eq boxes before the amp to a wall screw of power plug. ....gone. 1 Quote Link to comment Share on other sites More sharing options...
Brendan Posted November 27, 2022 Author Share Posted November 27, 2022 Thanks guys for the input. I can't seem to get rid of the hum. I have tried connecting a stranded wire from the 5A ground lug to the center screw on an outlet, and to the HP Xover, as well as to my Ayre Acoustics MXRs. None of that worked. I have confirmed that the outlet has ground with a receptacle tester. I have called electricians to come look for a ground loop, but they are completely not interested in the project. 1 Quote Link to comment Share on other sites More sharing options...
GdnrBob Posted November 27, 2022 Share Posted November 27, 2022 Did you try Mr. V.'s recommendations? Bob 1 Quote Link to comment Share on other sites More sharing options...
Richard Vandersteen Posted November 28, 2022 Share Posted November 28, 2022 3 hours ago, Brendan said: Thanks guys for the input. I can't seem to get rid of the hum. I have tried connecting a stranded wire from the 5A ground lug to the center screw on an outlet, and to the HP Xover, as well as to my Ayre Acoustics MXRs. None of that worked. I have confirmed that the outlet has ground with a receptacle tester. I have called electricians to come look for a ground loop, but they are completely not interested in the project. Electricians typically have no idea what a ground loop is per our stereo's. What did you change (including small things) when it started? Have you tried a different amplifier? AYRE uses a different grounding scheme (floating) in their amplifiers. Has the speaker's sub-woofer amplifier been removed for any reason as it could be the input wires? RV 1 Quote Link to comment Share on other sites More sharing options...
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