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View Full Version : ground hum. i made it worse.



chadmj
09-19-2008, 11:14 PM
Cobra guitar (neck and bridge humbuckers):
I have changed my pickup to reflect the style of music we seem to play at church and went with the original HO2 in the bridge. The H2+ had some slight hum but now that I put in the HO2 is seems a little worse.

I the type of solder used a culprit? I used some from radio shack and since I thought I could do this I may have made a mistake.

The ground hum goes away whenever the strings have human contact, saddle contact, volume and tone knob contact.

Would it be in my best interest to send to back to the factory for repairs of this type or someone in my area?

tom
09-20-2008, 02:37 PM
our alnico pickups have a slight amount more hum than our ceramic ones, but that's not what you're hearing. i also doubt that brand of solder is the culprit. a bad ground connection could contribute.
the hum when not grounding yourself to the guitar is normal, but can be drasticly worse depending on what's going on around you. since you're a good conductor of electricity, if you're grounded you become a shield. when you're not grounded you're an antenna for all the noise in the world. something i learned at a really young age was when i'm not playing, i roll the volume down. kind of like riding a bike, when i stop i put my foot down so gravity doesn't get me:)

pipedwho
09-20-2008, 04:41 PM
our alnico pickups have a slight amount more hum than our ceramic ones
Just wondering, is the HW2 alnico like the HO2 or ceramic like the H2?

ConnemaraGuitar
09-20-2008, 05:14 PM
I'm not sure if this would contribute to hum...

For the Cobra configuration (two humbuckers), the neck pickup should be rotated 180 degrees. Don't know if you did that, or even if it matters. As Tom said, grounding is a good thing. Make sure the grounding wire to the bridge is snug and connected. My wife really likes Tom's idea of turning my volume down.

tom
09-22-2008, 12:21 PM
the HW is ceramic like the H series.