Noise when I tilt the bass?

#42
Chicory Blue said:
You’ve clearly never played an *authentic* cover of What’s Going On. :p
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you're absolutely right, IMO. also: the low spark of high heeled boys. :thumbsup:

but i'm with the group who is suggesting more/better shielding --- as a way to reduce the noise. it may be impossible to eliminate it in that room/apartment. if you're not having that issue (or as much of it) in other environs: it's a SNAFU.

thanks for the recording! sounds like my passive instruments when i'm too close to the amp under certain conditions. my solution = i move away!

best of luck to you! i was kidding about not tilting your bass! :thumbsup:
 
#44
Fellow USA SUB owner here. Mine was a bit noisy in certain environments as well. I copper shielded the control cavity and haven’t noticed anything significant since. I believe that one of the corners EBMM cut with these basses was shielding.
 
#46
Chicory Blue said:
Curiously, my instrument in question *is* a humbucker. So... what’s the deal with that? My hum remains tragically unbucked..

--^@
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Some thoughts :
1. Do you play near a computer or a fan or anything with a (rotating) magnet? mine has watercooling and 8 slow-silent fans that produce a EM field when really near.
2. You may need to chack on the grounding of your equipment. bass-amp-wall socket.
 
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#47
Conkal said:
Some thoughts :

2. You may need to chack on the grounding of your equipment. bass-amp-wall socket.
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That crossed my mind, too. Some older buildings only have two-conductor wiring (hot and neutral, without the separate ground), even if the outlet's been changed to the modern version with the ground pin.

There are outlet testers available for about five bucks. Plug it in, and it'll tell you if there's a ground connection.
 
#49
sounds like house wiring to me got maybe a ground loop thing happening? one of these to see if it helps
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#51
+1 on the grounding as a potential issue in your house/apt. I had a Sandberg with a real hot humbucker at the bridge. It picked up noise I had never heard in my house. I went crazy unplugging things and trying to track the source with no luck.

I took the bass to work one night and found that I had no noise in a new, properly wired building. So I assume that the 50+ year-old house I live in has some grounding issues - especially considering half the outlets are still 2-prong.

I also have a power line in my back yard and multiple houses within a few hundred yards that grow hippie-lettuce and presumably have some heavy duty grow-lights. You can eliminate all you want in your house, but you may also get EMF interference from other homes in the vicinity...
 
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#53
mikewalker said:
That sounds totally normal, for a passive humbucker... you need to spin around to find that QUIETEST angle...
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That only sounds totally normal if you have crapload of electrical interference. It's not hum, it's some digital noise...a switching power supply, a computer screen, etc. What electronic devices are in the room?

Try a different room of the house to see how much it changes.

With your headphone amp, since it's not using AC it might be totally quiet. But if you do hear the same noise, just walk around and use the bass like a geiger counter to see where the source is.
 
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#54
Thus far, I’ve tried using both a battery amp and a headphone amp with everything in the house unplugged and turned off, to the same result, so it’s definitely not coming from my outlet or my pedals or any of my own appliances. Hum seems to persist in my living room in the same fashion, though I’ve not yet had a chance to try venturing outside with my musical dowsing rod.

I’ve got a sneaking suspicion the aerospace manufacturer across the street may have a hand in this. My busking rig came with me to work today as I’ve got business away from home this evening, so I’ll see how my setup acts in another town tonight.

--^@
 
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#55
I once worked in a building in China where the office across from us was set up for testing telecommunications equipment.
We could NOT use wireless mice or keyboards, because of the RFI coming from their office.

Did you shut down your laptop while testing with all devices turned off?
unplugging it won't be enough, and shutting it down w/o unplugging it won't be enough either, because the battery would be charging


rtslinger said:
sounds like house wiring to me
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Nope, the OP has a battery-powered amp that she's already used to test that theory.
 
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#57
Roamed around another town some with the headphone amp looking like a perfect fool. The pickup was very chatty and had some different things to say everywhere I pointed it.

I feel like I don’t *always* have a noise problem, but I guess I rarely dime the treble but for melodic solos anyway, so maybe I’ve just got a very excitable instrument. I lowered the pup recently, so it’s possible it was just always this noisy and I never noticed because my volume was turned too low.

So... what’s my next move? See about shielding?

--^@
 
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#58
A humbucker doen't really need shielding. should be dead silent . WRONG

I would check the wiring . If you are savvy with a soldering iron you could do some tests.
1.Chack every connection to see if they are properly connected
2. you could bypass the onboard electronics to focus down the problem , but you will need a diagram for that.
3. see if a grounding cable from the pickup or the output cable is loose. they are usually black.
 
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