spectral balance

Let's assume a well calibrated, good sounding setup with well controlled acoustics, a flat frequency response, maybe even gently sloped to a finely crafted house curve. Despite a good system - according to measurements - maybe some are familiar with one of these sound anomalies: While the...

No matter what source I find that looks so promising, knowledgeable, and even straight forward, I just cannot understand how to figure it out for myself. This is what confuses me. The "mirror trick" I keep hearing about is with speakers in mind, but I'm not using speakers-- this room is for...