I just started a small production company that so far has been doing small venues where my FOH speakers are fairly close together and the stages are just big enough to fit the band. I understand from reading the forum that there are times I should delay signal to some of my speakers so it all arrives at the listener at the same time. I'm currently using 2 (amp powered) tops over 2 active direct fired subs.Are there basic rules of thumb as to when I need to start delaying my signals, like size of venue, distance of stage drums to subs, minimum mis-alignment between top drivers and subs; things like that? Also I'm not sure what type of delay to buy since I need to delay the entire signal going to a speaker. Are there delays/processors made especially for this? Since I'm new at this is there a simple tool I can buy to help measure the delay needed or is it best just to use my ears to "tune" in the correct amount of delay?
It sounds like you are talking about 2 different uses of delay.The first is delaying earlier arriving signals from one part of a speaker system to another part of the system, like when you have tops and subs.This is part of system optimization and has had entire books written on the topic.The second is delaying the entire FOH to the back line. This can be useful when the FOH system is drastically in front of the back line including the drums. I tend to look at about 30 feet before I start to get concerned about the difference in arrival times. In other words if the mains are 30 feet in front of the back line AND the back line is loud enough to significantly contribute to the FOH sound (less than 6db difference), then it may be worth delaying the mains.It should be noted that adding the delay may make sound out front better but it may cause additional problems at frequencies with little pattern control by making the bleed back from the mains even further out of time with the sound from the back line on stage.Sent from my DROID RAZR HD using Tapatalk
OK Thanks, you've answered one of my questions. Since I normally have my tops over my subs, I haven't been worrying about the system optimizing but I guess there's no guarantee they are in sync as is. So how do I measure that and what type of delay do I buy to delay which ever send (tops or mids) I need to delay.
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