DOES ANYONE KNOW WHERE THE CROSSOVER IS LOCATED IN A C230K 2000? I HAVE THE STANDARD RADIO BUT REPLACED THE HEAD WITH A ALPINE 10 CD AND AM GETTING MUCH BETTER SOUND AND PRESENCE. I JUST REALIZED I HAVE TWEETERS ON THE TOP CORNERS OF THE DASH. THERE'S GOTTA BE A CROSSOVER SOMEWHERE THAT INCLUDES THE DOOR SPEAKERS BECAUSE I'M NOT GETTING BASS IN THE FRONT OF THE CAR JUST THE REAR. IM PUT THREE WAY 6.5s IN THE FRONT DOOR PANELS AND THEY HAD ALOT OF PUNCH IN THE STORE WITHOUT AN AMPLIFIER. THAT LEADS ME TO THINK THERE IS A CROSSOVER..IT REALLY NEEDS THE BASS IN THE FRONT TO IMPROVE THE OVER ALL SOUND. I NOTICE THERE'S PLENTY OF BASS COMMING OUT OF THE SMALL 4.5 SPEAKERS IN THE REAR DOORS.