FWIW, I bought a McIntosh preamp here on Audiogon that had a slight, but audible, hum that did not affect the speakers. Someone on this forum suggested that I replace the hard feet with sorbothane ones, which helped a little. I noticed that when I lifted the preamp the sound stopped completely, so I loosened the screws that hold the cover down. Surprisingly, it is now silent. Can't hurt to try it!
Amplifier humming
Hi,
I am Gnana Sekhar Thompson from Inida. I have an Electrocompaniet AW250 DMB Power Amplifier. A slight HUM comes from the Transformers (650 VA Toroidal). The speakers are dead silent. I need your guidance in this matter. I am much worried. Please let me know the options to correct this problem. Please spend your valuable few minutes to help me. Is it advisible to change the transformers? Will it affect the sound quality? Thanks.
I am Gnana Sekhar Thompson from Inida. I have an Electrocompaniet AW250 DMB Power Amplifier. A slight HUM comes from the Transformers (650 VA Toroidal). The speakers are dead silent. I need your guidance in this matter. I am much worried. Please let me know the options to correct this problem. Please spend your valuable few minutes to help me. Is it advisible to change the transformers? Will it affect the sound quality? Thanks.