There are many articles on the Internet how to modify them, soldering + sizing. I believe that the sound becomes more saturated. In general, they are not upset with the purchase and are completely satisfied, their 8 k, for which I bought them, win back 100%. Now I would think it's easier to add 5k and just buy a higher class. With its pros. They sound good for their cost, the sound became pleasant and 3-dimensional only after a year. What can not but rejoice. With its cons. Explosions sounded disgusting, the problem was solved by buying a subwoofer
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