The front right 4" stock speaker in my door is blown. I just want to replace it, I don't want to mess with the annoying tweeters in the dash. Nobody seems to sell just the 4" speaker without a tweeter on it. If I mount a 4" speaker with tweeter (coax) in the door, the crossover should take care of no signal reaching the tweeter? From an impedance perspective, will this be a problem since the 4" coax is probably 4 ohms and the head unit expects the dash tweeter and door speaker together to appear as 4 ohms?