Major regret: Selling the Philharmonitor speakers (first original version) by
@Dennis Murphy some years ago. Amazing, amazing speakers. They were the first proper hifi speakers I bought, so I didn't know how they compared with others. They had powerful bass, and in the small room I had at the time I had to place them near corners, so it became a bit boomy on bass-heavy tracks. I was all new to hifi and audio back then, and had absolutely no idea about anything. Had a demanding job, so I didn't want to give the technical side of things any thought, and just thought that the guys in the hifi store knew what they were doing. So I went to a hifi store and asked them what I could do about the boominess problem. "Try with new cables which tone down the bass", they said. "Ok", said I. Paid a lot of money and took the new cables home. But even though I had spent a lot of money on these supposedly fancy cables, it was not enough to convince my ears that it actually made a difference.
So, I sold the speakers, and attempted with other speakers in the same room. Had I only known what I was missing out on...! and that I could easily have solved the boominess with a simple touch of eq, or perhaps with moving the speakers! On a positive note, though, I became so very annoyed when I found out I had been duped about the cables that I started to read up on the technical side of audio, and then one thing led to another.