KJC12
Member
I can see that this topic has been covered a few times but I'm finding conflicting information. @brian42 did you leave your ANC in place and simply upgrade the speakers without losing the ANC functionality? That is exactly what I am hoping to do. Thanks for helping to simplify this!I think that's mostly been on the door speakers and it has something to do with the ANC.
When I took my dash speakers out the (+) wire lined up to the speaker tab that had the capacitor (both speakers were in phase). I don't know about my door speakers as I currently don't have any intention of swapping them out.
I'm not sure what the reasoning behind it is but I've always been told to put the filter/bass blocker on the (+) side. The Crutchfield bass blockers come with connectors already crimped on and the filter is on the (+) line.
Which tab is it on your JBL replacement? The larger tab is traditionally the (+) and the narrow tab is the (-). There might also be a red dot on one of the connections and that also signifies that it is the (+) connection.
The Metra connectors were wired backwards so both of my dash speakers would have been out of phase if I didn't swap pins when I put the new speakers in.