Hum Elimination?

[ZeroGomer]

Does anyone know how a hum eliminator like this one here actually eliminates the hum? Is there a simple way to make something that would do the same thing without having to pay the $60 for one? Could anyone point me to or draw up a schematic for one? My rig/bass hums a bunch, and it really gets annoying at loud volumes. If I throw it in the effects loop would it cut the hum, or is it a problem that requires a different solution?

[ZeroGomer]

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[fretless]

this seems like a bandaid a little , tell us your entire signal chain , and have you tried other basses and amps that are quiet , I think usually process of elimination you can weed it out , but sometimes it's bad ground / power source in the home or club that can't be fixed unless you rewired and ground it. Having said that I use 2 things at a gig this before I plug in

http://shop.store.yahoo.com/tmt/sockettester.html

and this regulator

http://www.tripplite.com/products/product.cfm?productID=208

these are good if there is no problem with your rig

 

[ZeroGomer]

Well, it buzzes even when it's just: Bass -> Head -> Cab.

 

I'm afraid it might be my head. I forget about trying other heads and basses until I'm not around them. ... I do have a socket tester though, and the socket isn't the problem. I don't think it's bad power, since I seem to remember it buzzing everywhere.

 

If it is the head, is there a way to fix the problem, maybe by throwing something into the FX loop? Something cheaper/more useful than getting it serviced?

[scarecrowbob]

There are a lot of different types of hum and causes, but you might find this information about shielding interesting :

 

http://www.guitarnuts.com/wiring/shielding/shield3.php

 

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Most guitars with single-coil pickups suffer to some degree from hum. Almost all are much noisier than they need to be, because the manufacturers don't bother to shield them well and don't follow simple electronic wiring principles that have been known for decades. This holds true even for many premium guitars costing thousands of dollars. Even some guitars equipped with humbuckers can benefit from good shielding and grounding