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a buddy has a stereo system in his boat 4 6” and 2 10” subs hooked up to 8 channel 1600 watt amp. Has the subs bridged and the 6’s on their own channel. 1 sub and 2 6’s keep cutting out or will make a horrible noise but if you touch them they’ll play again for a little bit. Do you have any idea what would cause that?
 

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Does said Buddy have a volt meter?
 

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a buddy has a stereo system in his boat 4 6” and 2 10” subs hooked up to 8 channel 1600 watt amp. Has the subs bridged and the 6’s on their own channel. 1 sub and 2 6’s keep cutting out or will make a horrible noise but if you touch them they’ll play again for a little bit. Do you have any idea what would cause that?
Actually it could be one or more issues but the most likely is a issue with the amp ( which is probably caused by a ground issue in the amp audio preamp or speaker out, or even the speakers themselves but more likely the preamp circuit since the issue is present in 1 sub and 2 6's and are probably sharing the same channel ground ) and this can be caused by either a loss of ground or more often a short to ground or a floating ground and causes a power surge of raw signal to the speakers which causes a separation gap or polarity issue between the voice coil and the magnet which causes the voice coil to stick and is why you have to push the speaker to release it and put it back close to the magnet so it can vibrate again, depending on the location and how long since the equipment was installed it's possible it could be from moisture or corrosion in the amp, which would be a good educated guess since it is a intermittent issue or it could be one of the speakers ( but don't rule out the cables from the head unit to the amp )..... you could try disconnecting the speakers 1 at a time or the inputs 1 at a time to see if this corrects the issue but if it is cause by moisture or corrosion you will have to remove it before the issue will be resolved and I would recommend correcting it before the problem becomes worse and causes a direct short and blows the amp...... I hope this helps....
 
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