In Ireland the bands play late and they play booming loud! Direct Acoustics have been working over there since our first Zone Array install at Clonabreany House back in 2010.
What we have learnt is that you can’t soundproof the marquee enough to satisfy an Irish band. They want a true 100dB LAeq(t15min) music noise level on the dance-floor from 22.00 until at least 02.00.
The low frequency content at 63Hz will have you shaking as it peaks at 115dB LZeq!
One venue struggling to contain an Irish band’s presence asked us to take a look. After a number of tests and discussions, we came up with a solution.
CONCRETE…
And a lot of it. 12.5 tonnes to be exact.
You, as we did, are probably asking yourself: can a temporary marquee structure really take that much weight?
It turns out it can.
The project was signed off by two world leading structural engineers. Yes, it needs some (to say the least) reinforcement but a Roder HTS 15m P Series Marquee can take two tonnes per bay with some clever engineering.
The concrete has been installed under a bespoke tuned rubber isolation to stop any vibrations generated through structural borne transmission and therefore potentially causing more issues. See our Soundproofing Fundamentals blog to understand how rubber can help.
Our acoustic model predicted a 33dB Rw but more impressively it was removing 19dB of 50Hz of bass amp nastiness. Couple this with our Highly Directional Zone Array and U2 could play in this place and you wouldn’t hear it outside!
This is the third concrete roof we have installed, but the first one in an aluminium framed marquee. Take a look at the last one we did back in 2018 over in Malta.
There are no limits for these bands. Rock on!