Monitor Hum

I got my Mackie MR8's wired out of a Central Station with balanced cables. Is it possible this low end hum/hiss is from unbalanced lines are being introduced into the signal path? (I.E. an analog synth)

I also have a set of Alesis Monitor One's (Passive) hooked up out of an Alesis RA-100 power amp. All my equipment is ran powered through a Monster Pro 2500 condintioner, but my Alesis monitors seem to have a louder hum then the Mackie's. I read some other forums, and I was wondering was some of you think about when I should consider when figuring out the source to the hums. Are Shielded cables different from Balanced cables? Would that be a good idea to use only shielded cables for my monitors, or replace all my balanced cables with shielded cables? Some forums have said I shouldn't run power cords and cables parrellel to one another, yet instead, run them at 90 degree angles to help reduce RF.

Any help would be greatly appreciated. Thanks

I had some problem before with hum and interfiering noise in my system.
but managed to solve it by connecting the computer directly to an wall socket.(everything else is connected to my furmann power con.) and goes to a wall socket in a nother room with an extension cord.

so try switching off your equipment one by one to see wich one is causeing the hum.
separating signal cables and power cords might also be a good way to get rid of the problem.

yeah its definitely worth trying the above. a friend of mine had a similar problem with his moog little phatty, turned out simply plugging it into its own seperate wall socket eliminated the ground hum problem.

oraziodelcore wrote: try switching off your equipment one by one to see wich one is causeing the hum.

Thats a good start, also plug headphones into all the gear that have headphone jacks to see if its equipment or wiring.

definitely separate audio and power wiring

those are easy starts.

purchase a power surge protector .. they usually have batterys.. great for power outages so ur gear wont fry. and they run preatty well