I LOVE Spring Break Nationals. It is by far one of my favorite shows. SVR is another favorite, but for completely different reasons. SBN is one of those shows that I go to for the crowds as much as the competitors. Having thousands of people milling around a car audio show is always fun.
The ocean center is where we retreat to when it gets too hot outside. The only issue is that it is loud inside. How loud? According to this handy chart, here are some average sounds as expressed in DB.
| Sounds | dB SPL | | Rocket Launching | 180 | | Jet Engine | 140 | | Thunderclap, Air Raid Siren 1 Meter | 130 | | Jet takeoff (200 ft) | 120 | | Rock Concert, Discotheque | 110 | | Firecrackers, Subway Train | 100 | | Heavy Truck (15 Meter), City Traffic | 90 | | Alarm Clock (1 Meter), Hair Dryer | 80 | | Noisy Restaurant, Business Office | 70 | | Air Conditioning Unit, Conversational Speech | 60 | | Light Traffic (50 Meter), Average Home | 50 | | Living Room, Quiet Office | 40 | | Library, Soft Whisper (5 Meter) | 30 | | Broadcasting Studio, Rustling Leaves | 20 | | Hearing Threshold | 0 | |
The AudioControl Booth did something pretty cool. The put up one of their 3055 units with a mic on it and measured the SPL in the Ocean Center. The quietest I saw it all weekend was around 106-107 DB, with some spikes in the 126-127 Range. (Now mind you that was in the few minutes we were inside each day...)
Here it is snapshot from the RTA while we walked by it one day. 
I actually felt sorry for the folks who were manning booths inside all day long. I think that they may want to start providing hearing protection to vendors at the ocean center.
Did you see the RTA Hit Higher? Did you grab a shot of it?