Hi, everyone, I tried cleaning off earwax off both cups of my headphones by wiping the metal speaker grill with a microfiber cloth and a cotton bud dabbed with rubbing alcohol with a little pressure. The bass is now weak and sound quality not as great as before. Are the headphones damaged?

Connected to my Honor 9 smartphone my Momentum 2.0 wireless headphones have no sub-bass and very little bass with the mids overpowering the other frequencies. But with the headphones connected by wire to the phone the sub-bass and bass can be clearly heard and the mids sound less loud and...