The Dirty Dash and Poll Sound

Posted by: Tyler Robinson - Systems Tech on June 9, 2013


It can be said that the only thing that wasn't muddy at the Dirty Dash this year was the audio reinforcement. Superb audio clarity and coverage of the event was provided by an L-Acoustics system deployed by Poll Sound's qualified rental department. The dirty dash is a 10K race through mud and obstacles that drew over 10'000 spectators and participants.

There is anywhere from 5000 to 10'000 people flowing through the races main staging area which features concessions, vendor booths, bleachers for spectators and the start and finish lines for the race. To cover the large area we deployed two arrays of 9 L-Acoustics Kara Loudspeakers which were hoisted 20 feet into the air via crank up tower lifts. One array faced North East toward the finish line and bleachers while the other array faced North West toward the Start Line. We placed the towers a little over 20 feet apart to help eliminate comb filtering between the arrays. Underneath the north west array was a stack of 3 L-Acoustics SB28 subwoofers while the north east array had 4 SB18's with 1 SB28. The low end coverage was exceptional and kept the crowd and participants energized for the event.

To get the audio to the speakers from the FOH mix position we used a Lectrosonics IFB 400 wireless hop. A hardwire signal run would not have worked due to the need to cross a muddy course crowed with runners. The wireless hop was over 300' feet but worked great and had zero dropouts. The Emcee had the freedom to wander anywhere he wanted thanks to the Lectrosonics hand-held microphone that we provided. He often wandered to distances over 600' from the receiver without dropping out.

To learn more about the Dirty Dash click here.

The Dirty Dash and Poll Sound The Dirty Dash and Poll Sound The Dirty Dash and Poll Sound

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