Noise when connecting MPC through midi - Gearspace.com
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Noise when connecting MPC through midi
Old 21st January 2013
Gear Head
๐ŸŽง 10 years
Noise when connecting MPC through midi

I have the following equipment turned on:

Macbook Pro with logic 9
apogee duet
soundcraft m8

I'm using the mpc to trigger sounds in logic via a midi to usb cable (not the most expensive one) An anoying his and crackle pops up when the cable is connected. Sometime the noise/hiss/crackle is triggered by me moving my fingers over the trackpad of the macbook.

What could be the problem? The cheapo midi interface?
Old 21st January 2013
Lives for gear
๐ŸŽง 10 years
so just to confirm, you get no noise/hiss/crackle when midi is not plugged in ?
Old 21st January 2013
Gear Head
๐ŸŽง 10 years
Yes that's right

Oh yeah, when I use and connect the same midi to usb to my studiologic 990, there are no problems
Old 21st January 2013
Lives for gear
๐ŸŽง 10 years
Try running your MacBook on battery power to see if you get the same noise. If so, you probably have a ground loop between your mpc power supply and your MacBook power supply. If that's the case, you will need to put them on different power circuits if possible, or if you can't you might want to invest in a power conditioner or at the very least an ebtech hum-x.
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