Quote:
| mike c wrote:
on the same note ... what about treatments for bass? what about terrible dips ... |
IN order of preference for dealing with room modes to flatten bass response:
1. Subwoofer position
2. Acoustical treatments (bass traps)
3. EQ (parametric)
Terrible dips are caused by the same thing as terrible peaks - certain frequencies, determined by room dimensions, that resonate (think "organ pipes") between room surfaces, back and forth, to and fro. Where they "meet themselves" in phase, they add and cause a peak. Where they meet out of phase, the cancel causing a dip. Sub positioning can be used to excite as few room modes as possible minimizing peaks and dips. Understandably, not many of us can put our subs in the best position, but we can locate what I refer to as the least worst position. Acoustical testing software can aid in finding that position. Next up is installing bass traps, which can make a HUGE difference by absorbing bass frequencies and preventing them from resonating in the first place. (Why not have bass traps as the first thing on the list? Moving a sub is free; bass traps are not.) Preventing room resonances prevents peaks and dips. Finally, a parametric EQ is used to put the finishing touches on the room response.
What was the question?
