Mac Kerr wrote on Sun, 29 August 2004 08:50 |
I wouldn't worry about timing the subs to the tops IF you are using a center cluster of subs, and left and right mains. Because of the separate locations of the subs and mains you could only align them in time for a very small area of the audience anyway. Subs and mains can only be time aligned when they are physically close to each other, but then you have the alternate problem of nulls and power alley.
Mac Kerr
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IME, properly delaying the subs is a big help regardless.
Lets say the tops are not delayed to the subs, and the subs are centered. If the lister is in the center and up close, the tops may be sufficiently farther away that they are aligned for that listener. But as the listener goes back or off center the delay will reduce and the tops will eventually lead.
If the subs are delayed to be correct when with the tops, but are centered, the subs will lead if the listener is close and centered, but as the listener moves away or off center, the subs will lead less and will eventally be aligned prettly closely. This will give a better result for a larger portion of the audience than the above.
If the subs are delayed to be correct when with the tops, and they are with the tops, they will be correct for anyone in the center of the room no matter what distance from the stage. But for anyone off-center, the sub timing and response will be a mess. Definitely the worst of the three scenarios.