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Originally Posted by SporTi  In my car the previous BOZO stereo installers simply bypassed the amp/crossover by splicing two wires on one side into one on the other (i.e. they took the left rear single wire where it went into the amp and crimped it to both the woofer and tweeter feeds for the left rear.) I would assume that I am getting less than optimum sound this way. Should I build a board of crossovers back there? One for each corner? Also, why can't you run a new head unit through the original amp/crossover? I would think that you would just increase your power. |
If you are keeping all of the stock speakers you can keep the stock amp without to many problems. The main issue with aftermarket headunits is their output to amp voltage. As the stock amp is hardwired to accept the signal from the stock amp it does not have a gain control. The main purpose of gain control on an amplifier is to set the amplifier at the proper sensitivity so that you are not generating noise and distortion.
So let's say that the stock headunit as a 3volt signal, and your new headunit has a 4.5volt signal. That 4.5volt signal will cause noise and distortion when you start to crank the radio up. Where as if you have an aftermarket stereo you can simply turn down the gain on the amplifier to accomodate the higher output voltage of the head unit.
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