Originally Posted by
tenchimuyo93
best thing i have seen done for sedans is to port the rear deck. it will do 2 things at once, first it will funnel the moving air {bass} towards the rear window to be reflected to all points forward setting up a better sound stage. second it will create a sort of bandpass effect filtering out certain Hz like the real bandpass box.
that what i would do anyway, as for amps. well max power isnt always best. say your subs are 200rms/600max. but your 600 watt amp does 350rms. thats bad for the subs. so like said above find the highest rms rated amp for your sub without breaking the limit of the sub.