2. analog
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I lowered my noise floor on the cheap........

I run a dual use system so I run a APC battery back up incase of power interuption so i can shut down Projector and let fan cool bulb to avoid damage. So I got bored and wondered what if any improvement I would get if I ran Phono Stage into that unit and unpugged it to run on DC so after I fished wires, I unplugged the backup shut off alarm and listened for near 3 hours enjoying the dead silent back ground I never had before, all hum was gone. I dont have a super awesome analog rig, SOTA Star/Saphire tweaked Rega 300 arm, AT oc150 cart and Musical Surroundings Phono with Kimber Hero wire but man it was really easy to hear the imediate improvement..........not sure how much over 3 hrs I can listen on battery but it was a cool upgrade, Cheers
chadnliz

Showing 1 response by eldartford

eldartford
4,262 posts
 
IMHO, lowered background noise when you switch to battery power indicates that your equipment's power supplies, or the grounding scheme of your system ain't so hot. I have never had a system, cheap or expensive, that I could not get to be quiet. Sometimes it took quite a bit of trial and error experimentation.

One exception would be tube electronics (Heathkit preamp) that used AC filiament excitation, where I couldn't get the hum to completely go away. This was back in the 1950's.
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