A delay stack is used in a PA system for a larger event in a very long room. In a long room the quality of the sound deteriates as you further down the room as sound is absorbed by people, carpet and furniture. Of course you can add speaker halfway down the room, however sound travels at approx 340 m/s or approx and the sound will be out of time. The sound from your front speakers will have an echo compared to your mid speakers and your event will sound like its a train station!
The solution is to add a small delay to the mid speakers to bring them back in time. I also find it useful sometimes to put a short delay on the main PA if I have a deep stage withe a drummer at the back. Pecussive instruments like snare drum really accentuate timeline errors and a short delay, say 10m/s on the FOH can really tighten up the sound. I tried delaying just the snare channel bbut this affacts the f/back adversely. It is an inexact science as delays change depending whether you are left or right of t...
Generally these bands will be offered to you with a very small PA supplied by the lead singer. If you want the best sound for your audience of 200 + PX be sure to ask for a Glenn Smith Sound system to suit your event!
Should you use the Inhouse team or Glenn Smith? There is often a lot of pressure from venues to use the in house supplier. And often they can supply a wide range of AV services for your event that outside suppliers do not have access too. And usually it is expensive! In many cases, and particularly with sound for your entertainment, Glenn Smith can offer a great alternative. Not only are we much more economical, but usually will supply a superior service. We specialize in live music production where AV companies often do not. We supply gear that will suit your event rather that overly expensive gear that you really do not need. And we will be working closely with you and your act with crew that really know thier stuff as we want you to come back next time!
My view on this is that if you can hand craft products there are some great advantages. I have 15 x Behringer 18 in sub woofer speakers and my main complaint is that while the speaker drivers are great the boxes are are not as well made as they could be. I have built some heavy duty boxes (but light wieght due to advanced desigh) based on thier design and the results have really been really pleasing. These boxes use loads of 45mm screws, proper slotted joints, 3mm aluminium silent grill and highest qualtiy glue and produce outstanding sound and endurance. No crappy staples used here!