This thread reminds me of one idiot I knew at school; a self-proclaimed "audiophile" who to my mind would more accurately be called a "cacophonophile", since his idea was the same as that of those other idiots who buy Beats-me-why-anyone-falls-for-this-rubbish headphones; namely, louder+more bass=higher fidelity. For my part, even back then I failed to see how marginalising three-quarters of the musical spectrum (and the three-quarters which, in most real music (e.g. not (c)rap), contains the most important parts) constitutes any kind of "fidelity".
At one point, the idiot sought to "improve" a pair of good little all-round speakers by removing the vented backs and replacing them with solid ones. The result, as per his intention, was to greatly increase the bass response; unfortunately this destroyed the balance of the speakers, as the other three registers were barely audible. Also, the increase in the quantity of the bass was at the expense of a vast reduction in quality; instead of being crisp and clean as before, the newly augumented bass was muffled and boomy. Did I mention that another of his beliefs was that you can get something for nothing?
I've (fortunately) lost contact with him in the intervening 40 years. No doubt he went on to own a system using solid-gold, directional, oxygen-free speaker cables which must be installed running due north/south and by the light of the full moon — and then spoiled any "improvement" thus gained by having too many woofers and not enough tweeters. He probably also fell for the bollards about coating the edges of his CDs with a special expensive green marker pen (which is probably a cheap marker pen with a fancy label stuck on it), and never mind the fact that even if the "problem" this is supposed to "solve" actually existed, the infrared lasers used to read CDs are no more likely to be absorbed efficiently by green dye than by any other colour.