| | Re: Speaker grounding out?
It is possible to run 4 full range speakers and a sub from a 4ch amp, providing the 4 FR speakers are ran in parallel on 2 channels & the sub is running in mono on the other 2 channels bridged (provided the amp is capable of that feature)
I ran a 4ch amp with 4 mids/highs & a single sub for over 10 years without an issue, but the amp was capable of 2/3/4 channel operation down to a 2ohm load.
It also isn't a good idea to run a 4ch amp with only 2ch connected. That could cause the amp to go into protection mode.
Could be the wiring from the amp to speakers is incorrect, has a short or the amp is defective.
The speakers shouldn't cause a short by themselves but if the wire passing through the door grommets had some insulation damaged, it could easily cause the head unit/amp to short. Also if the connectors to the speakers aren't insulated properly they could come in contact with any metal inside the doors & cause a short.
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