tweeters and parallel wiring

Once again probably a silly question but, once I was advised that running a set of tweeters in parallel to the midrange speakers would not overload the deck....In fact the exact wording I believe was "As long as there is a capacitor on the tweeters the source will not se the additional load." I installed the tweets in the above manner and verified with my DVOM that at the deck there was still 4 ohms in the circuit however after one deck stopped working the second deck i feel runs a little warm... I am wondering if this is coincidence or if this connection is incorrect....thank you for any help on this matter.Trucks, Sex, And NO REGRETS!

Your connection is incorrect.  If your tweeter and your midrange are both 4-ohm speakers, then when the tweeter is receiving a signal (when you capacitor, which is a crossover, is allowing the tweeter to receive the high frequency sounds) unless you have also used the correct low-pass crossover for the mid, both speakers will be connected to the amp placing a 2-ohm load on it.  If it is a head unit, a 2-ohm load is too low and could damage the amp.  Use a proper 2-way crossover for this kind of application.Support the12volt.com

Because the crossover places the tweeter into the circuit only above a certain input frequency.  Your ohm meter produces DC and was only "reading" the resistance of the mid.Support the12volt.com