FM stations limit frequency response.
If I remember correctly 50-15000 is it. They have an SCA marker tone at 19000, so FM radios will never pass even close to that frequency.
You may want to try a decent power conditioner and make sure of NO ground loops / hum / noise in your system. Turn it up with NOTHING being played and you should get Zippo out of your speakers. Get an outlet tester....a few bucks at the local Home Despot. use it.
All those tweaks are the last things to try. You'll drive yourself nuts with tennis balls VS squash balls VS Edmund Scientific 'no bounce' balls (hi hysterisis)
Get the fundamentals right, first.
If I remember correctly 50-15000 is it. They have an SCA marker tone at 19000, so FM radios will never pass even close to that frequency.
You may want to try a decent power conditioner and make sure of NO ground loops / hum / noise in your system. Turn it up with NOTHING being played and you should get Zippo out of your speakers. Get an outlet tester....a few bucks at the local Home Despot. use it.
All those tweaks are the last things to try. You'll drive yourself nuts with tennis balls VS squash balls VS Edmund Scientific 'no bounce' balls (hi hysterisis)
Get the fundamentals right, first.