marmora
Rookie Solder Flinger
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Post by marmora on May 7, 2005 13:40:58 GMT -5
Has anyone ever shielded an effects pedal? I assume the parts could be susceptible to noise since some of the parts are the same as in guitars.
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dinis64
Apprentice Shielder
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Post by dinis64 on May 7, 2005 20:59:00 GMT -5
I have a boost pedal that could maybe use that. The clean boost channel always works perfect, but the mid/treble boost side tunes in to radio stations or something. The maker said it's because of my location. He also said he could replace the wire from the input jack to the circuit with shielded cable, but now I'm thinking why not shield the whole pedal. Then again, it is a metal box?
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Post by bam on May 8, 2005 7:36:43 GMT -5
I think most pedals are shielded by its nature (i.e. the metal box shares connection with (-) output).. :?
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marmora
Rookie Solder Flinger
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Post by marmora on May 8, 2005 15:52:15 GMT -5
I was thinking that being metal (most of them anyway) would be good enough shielding, but thought I'd throw this out there.
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Post by bam on May 8, 2005 20:48:28 GMT -5
The box being metal itself is not a good shield if it's not connected to the (-) output wire.
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marmora
Rookie Solder Flinger
Posts: 15
Likes: 0
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Post by marmora on May 8, 2005 22:04:07 GMT -5
True. Thanks for keeping this site up so we can have these conversations.
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Post by erikh on May 9, 2005 15:55:07 GMT -5
Actually, this is all partially true. The box does act as a shield but if the jacks are plastic, then the ground of the circuit isn't really connected to the box. If the jacks are open circuit, then that would connect the ground plane to the box and effectively shield the entire circuit from any outside interference. Short wire runs and a good component layout also help with any outside interference.
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Post by bam on May 9, 2005 22:38:10 GMT -5
As i've said, the box being metal itself is not a good shield if it's not connected (maybe should add, electronically) to the (-) output wire.
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Post by GuyaGuy on May 11, 2005 3:39:04 GMT -5
if the jacks are plastic, then the ground of the circuit isn't really connected to the box. If the jacks are open circuit, then that would connect the ground plane to the box and effectively shield the entire circuit from any outside interference. so that's why my zoom pedal hums! cheap plastic jacks + case! guess i'll try changing the jacks! perhaps a bit of shielding? thanks! |
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Post by RollnROCK89i on May 11, 2005 23:05:56 GMT -5
Does any one know if most pedals have the - output connected to the metal case?
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Post by bam on May 12, 2005 2:57:57 GMT -5
Nope, humming is the nature of most zoom pedals (even the metal-cased GFX4,5,8). Korg AX100G is encased in a plastic casing but it hums less than Zooms.
A few people noted that the Zoom hum can be reduced by reducing both master level and program level, and add your amp's level. I don't have a Zoom pedal, btw. :lol:
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