I got a pair of Polk RT3s off of Craigslist for dirt cheap. They were in great physical condition, the woofers look new as well. However when I plugged them in, one speaker was significantly lacking in treble response. I unscrewed the tweeter plate, only to find that the tweeter magnet was missing!!! It turned out that it fell off and was attached to the woofer magnet. I placed the magnet back on the front plate and centred it as best as I can. It is now staying on just by the magnetic force which is really strong (I don't know how it fell off in the first place).
With the tweeter put back, that speaker now has some treble output, however the highs are still significantly muffled compared to the other speaker, resulting in very unblanaced sound. I switched the two tweeters around and the sound defect transferred to the other speaker, which means it is for sure the tweeter.
Does anyone know if I did something wrong in reattaching the balanced dome tweeter? I didn't use any adhesive to glue it back on, would that make a difference? I really wanna bring the old girl back to life. Thanks for advance for any insight.

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