Wayne Parham Messages: 18787 Registered: January 2001
Illuminati (33rd Degree)
Echo is caused by the environment, not the source. That said, the amount of reflection can certainly be different at higher frequencies than at lower frequencies, and usually is. It's easy to absorb higher frequencies than low, so it's not uncommon to have problems at bass frequencies even when the room is pretty tame at midrange frequencies upwards.
Large rooms are easier to deal with than small rooms, by the way.