My brother & I both have a pair of the 4333a's and the tweeters are behaving identically. Very low volumn from the tweeters. Have a schematic for the 3133a crossover to guide me. The tweeter is 16 ohm but checks @ 6.1 on meter. If I shunt the c6 capacitor, the tweeter and reastat control on front of cabinet will work just fine, but this bypasses the crossover. I'm not sure what I will do next short of taking the whole cabinet to the repair shop, ouch. Any ideas? Didn't know if this was a pattern failure do to age.