It seems like lots of speakers these days, and even amplifiers for that matter, no longer have tone controls on them, whereas in the "golden age" of hifi, they were more or less ubiquitous.    What happened? My understanding is that speaker manufacturers knew that they were dealing with consumers that were going to be using their speakers in suboptimal rooms, where one side of the room may be attenuating certain frequencies more than the other. Therefore these controls were included so