I'm having a hard time sorting through how to wire up the 8 speakers (not counting the center dash) to an aftermarket amp.
Do you folks just wire up the rear doors and leave the D-pillar speakers in place?
Do you leave the dash tweets in place and wire up the front doors?
Lastly, if you buy coaxes for the doors, that's too much high frequency, how do you deal with that?
(phew, sorry for that but I had to ask someone, it's driving me nuts)
The hard part is the door speakers. In other cars, I ran dedicated speaker wires from the aftermarket amp (in trunk) into the doors all the way to the door speakers (leaving the factory speaker wires unused and unmodified). In the 850 and x70 cars, this is difficult because of the way all the wires run to the doors through a special connector (like a Molex XRC ).
In my 850 I gave up on trying to run my own speaker wires to the doors. On my V70, I plan to connect my aftermarket amps back into the factory speaker wires in between the head unit and the wiring harness connector. This way I'll be using the factory speaker wires to get to the speakers, but the factory wires will be unmodified. PM me if you need clarification.
Also, if you put coaxes in the doors and want to not use the tweeters in the dash or the D-pillars, it's easy to disconnect the tweeters.