Humm is frequently caused by ground loops. This can happen in almost any system. There are a few ways to find out. My recommendation would be to unplug everything except your amps (this includes interconnects and power cords). If the humm continues with only the amp connected to the speakers, you can be pretty sure you have an amp problem and it needs repair. If not, then start by plugging in the pre-amp, connect the interconnects and listen. If there is still no humm move on the CD player. Once the humm appears this component is likely to have created ground loop between another component. You can use a cheater plug to lift the ground and see if this stops the problem. Since using cheater plugs is hardly advisable long term there are a few other things that sometimes help, which are as simple as changing where you plug the component in. In some cases I have found no other way to eliminate ground loop hums other than lifting the ground.
excessive hum-buzz in speakers
I have a sony 400cd ES changer connected to a classe cp35 preamp which is connected to a sunfire stereo amp which feeds a set of carver alIII's
The classe has an mit a/c cord and my whole system is connected to two panamax 1000's which connect to a hospital grade wall switch.
I also put those funky cardas rc plugs on every unused rca input connector on the classe and the sunfire.
But still I have some serious hum coming from the speakers.
Before, when I only had my yamaha rxv 2095 with the pre-out mains going to a carver tfm35x and a pair of psb golds, my system was relatively quiet. Although the overall sound has improved, the humming is driving me CRAZY!!!
Please help!!!
The classe has an mit a/c cord and my whole system is connected to two panamax 1000's which connect to a hospital grade wall switch.
I also put those funky cardas rc plugs on every unused rca input connector on the classe and the sunfire.
But still I have some serious hum coming from the speakers.
Before, when I only had my yamaha rxv 2095 with the pre-out mains going to a carver tfm35x and a pair of psb golds, my system was relatively quiet. Although the overall sound has improved, the humming is driving me CRAZY!!!
Please help!!!