This would allow you to use 2 of the amp channels to power the 4 front speakers and then the other 2 channels to power the rear. The alternative would be to go with the passive design. This method is more expensive and complicated and may not be for you. The other 2 channels will run the woofers in the door.
2 channels on the amp will be used to run the full-range dash speakers (crossed at 300-2000 hz depending on the speaker). The head unit goes into a DSP where it does the LOC, processing (cross over points, time alignement, etc). Purists will say it messes with your front sound stage too much. My plan is to skip the rear speakers altogether or just run off the head unit. I have a 5 channel amp and I am going to go with an active system instead of a passive. Again, this is what they are trying to do with the stock setup. The crossover would already be tuned and you wouldn't have to try to do the same yourself. And it's easier if you get a good component speaker for the front to put the woofer in the door and tweeter in the dash. The door+dash is acting as one speaker at that point. Assuming you use the 300Hz high-pass cutoff for the dash, you would want a 300Hz low-pass for the doors and run both off the front channels of the amp. If you want to use the door+dash, the doors should have a crossover themselves to cut the high frequencies and leave those for the dash speakers.
It's not helpful or at least is more difficult to tune with two sets of speakers coming at you from the front. They use a very simple crossover system where they cut off the low frequencies (bass blockers) to the tweeters and let the natural response of the woofers to cut the high frequencies there. BUT, it's still a 4-channel system, 2 front, 2 rear. If they used component speakers in the rear, they would have called it an 8 speaker system. But really what they are saying is that they actually used component speakers for the front instead of a cheap single speaker, maybe with a whizzer cone. What speakers did you get for the replacements?Ĭar manufacturers love to list out how many speakers the system comes with.
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