Re: If you have installed a new head unit in your 337..... (feenievw)
I dont think bypassing the Monsoon amp and keeping the Monsoon speakers is what you want to do... It will be a P.I.T.A. There are lots of posts in the audio forum on this topic. The problem is the Monsoon amp is also a crossover network. So there are high frequency and low frequency outputs to each corner of the car. This is why people with Monsoons are confused when they go to put aftermarket speakers and there is a separate wires to the woofer and one to the tweeter. There are actually 8 outputs from the Monsoon amp. (According to the manual 4x20 high freq, 2x20 mid, and 2x30 sub)
Basically most people seem to be doing one of two things:
1) replace the HU with a HU that will interface well with the Monsoon amp. (There is all sorts of debate about high wattage ones overdriving the Monsoon amp and MOSFET output HUs not working well, Ill leave that to the experts in the car audio forum. Look over there, many threads)
2) Replace the HU and chuck the Monsoon amp and replace the speakers with the common component 2 way speakers with a passive crossover. That way the speakers will be properly crossed over because the stock Monsoon speaker crosover is done in the amp like I said above.
Personally I will probably try #1 first and hook up a sub woofer and separate amp for it in addition to the Monsoon speakers and amp. If it sounds like POO ill save some money and replace all the speakers with Bostons and chuck the Monsoon amp.