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Title: Dayton Audio SA240-B 240W - Audible Hum (how to remove)
Review: Dayton Audio SA240-B 240W Subwoofer Amplifier with BoostI replaced an amplifier in an Infinity HPS-1000 subwoofer that had failed after 10 years. The dis-assembly and modification to install it were very easy. When I powered it up everything was normal. Then I attached it to the LFE output on my receiver, which produced a very loud hum. I looked for a ground loop between the receiver and the subwoofer and noticed the Dayton Audio SA240-B 240W has a ground lug on the power cord. None of the other components have a grounded cord.To remove the hum:Find a cord adapter that changes a 3 prong cord to a 2 prong cord. Or alternately just cut off the ground pin on the power cord. Problem solved.It works extremely good. At least as good as the original high dollar amplifier it came with.
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