dimitrig - smells fishy.
The CS1.2 is a moderately sensitive speaker. It should not be unusually loud. Bass shouldn’t be weak. Nor should it muffle voices - spoken voice is a good tell-tale for troubles because we hear it so well..
I suggest looking behind the woofers for obvious damage (melted parts) on the XO; or loose wires at the xo or drivers. A woofer might have a loose coil. Listen to each speaker independently to see if they sound different.
The 1.2 is the 4th generation of the model 1 (4,04a, CS1, CS1.2.) These speakers are worth troubleshooting - and fixing. Check out some reviews online. Rob Gillum at Coherent Source Service can supply help and solutions.