Delay

[Haysus]

I thought this might fit here.
I getting used to delaying tops via XTI dsp, almost every show. I am finding it really clears up a mix especially when subs are placed near the backline. I have been seeing the tops set anywhere from 5-17 feet. 4 tops and 2-4 subs every show.

Is this normal to change every show?

Does anyone have more insight on delay or experience?

[Bill Fitzmaurice]

Delay with respect to the subs is a minor concern, it's delay to match the tops with the backline that's critical for best results. It will be different in every room depending on the distance from the backline to the tops.

[Haysus]

So if the back line is ten feet behind the tops that is my number, do I need to add for the sub horn length difference?

[guitarkeys.com]

You would be looking for a common denominator.

Jamie

[Bill Fitzmaurice]

So if the back line is ten feet behind the tops that is my number, do I need to add for the sub horn length difference?

No. If you do that then the backline will lead the PA. Delays below 100Hz are very difficult to hear, if not impossible. Delays of even 1ms can be heard in the mids, so what's important is time align of the mid sources to each other.