craiguss Posted October 30, 2013 Share Posted October 30, 2013 I have recently tried making a 16 channel multicoreIm using a metal stagebox and all the connections are metal. I have two speakon running through a seperate speaker cable And a DMX input running through another seperte cable,When I first wired it I got a very loud hum from it which then turned into a loud farting noise if I turned it up to a certain level. I re-wired the whole lot and now the forst 8 channels work, but the last 8 dont! Theyre stillgetting the noise! I have used the ground cable on the pin aswell as the connector chassis. Is this correct for a multicore? I was thinking maybe it becAuse theyre grouning off to eachother as theyre all metal?Im not sure! As all 16 connections are wired the same and I have nothing plugged into it yet! Any help would be great! Thanks, Link to comment Share on other sites More sharing options...
timsabre Posted October 30, 2013 Share Posted October 30, 2013 You should not be connecting the chassis connection. Just pin 1.What cable are you using and how have you wired it? Link to comment Share on other sites More sharing options...
Simon Lewis Posted October 30, 2013 Share Posted October 30, 2013 It's a little hard to troubleshoot without seeing exactly what you have done, but if you have shared the "earth" connection between mic level audio inputs, amplifier outputs and a DMX device, then it's quite possible to do damage to the equipment, let alone have unwanted noises (the loud "farting" being a sign of distress!). Make sure you have broken any shared earths or connections to chassis, and test again. Let us know what happens... Link to comment Share on other sites More sharing options...
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