![vintage rado loud hum vintage rado loud hum](https://bbwatches.info/images-watches/radoplanblacksteel_04.jpg)
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I knew I had "dirty power", but I just had a feeling that this problem was not going to be solved by a power conditioner. I talked to a number of other people about the problem. (We live in a rural area with no industry and always had, what I thought, was pretty clean power.) He said voltage fluctuations can cause torroidal transformers to hum and asked me to take some readings on my voltage at different times of the day. Later that morning I called my electrician, explained my problem, and asked him if there was any way that noise could get into those circuits or if the grid could cause that much noise. Early the next morning, I turned them on - no hum. It was getting late, so I turned them off and went to bed. The hum on the mono-blocks was much louder than on the 150A-they have a much larger transformer.
![vintage rado loud hum vintage rado loud hum](https://static.fratello.com/2020/08/DOXA_Press_SUB_300_821_10_351_10.jpg)
WTF! I started plugging into different circuits, tried unplugging everything but the amps. By 10 o'clock the hum was back and 5 times louder than my other amp. I cleaned up my rack, created some room, and by 8 o'clock had those babies plugged in. Or which combination of equipment was plugged in where still that same hum and most noticeable at those certain times of the day.Ībout a week ago, I received my new pair of Belles MB-200 mono-blocks. Funny thing is, the hum was always loudest either early in the morning or late at night times when you would think the grid was cleanest. It always had a little hum from the transformer, but nothing real loud or what I thought was out of the ordinary. I thought I would post this hoping it may be helpful to someone troubleshooting amp hum or buzz.