The Butterfly system installed is made up of two flown vertical line arrays, each with eight Hi-Pack C.D.H. 483 and four Low-Pack C.D.L. 1815 enclosures, featuring cardioid dispersion. There are also 2+2 floor-mounted Victor Live enclosures for the ultra-low frequencies. 2+2 Omnia Plus are used to cover the tiered side seating, whereas the stage monitoring is handled by two Bomber systems and six H.A.R.D. 212.
Head of audio at the Icf-Celebration Hall is Christof Mäder, known among local trade members for his 'golden ears' commented: "Honestly, I took it almost for granted that the system would have a very powerful, clean sound but, after having used it for some time, the aspect of Butterfly I appreciate most is the effective 90° horizontal dispersion at frequencies considerably higher than 10kHz. I was surprised to hear - and measure - that even the front rows of seats, which are just four metres from the stage, are perfectly covered by the Hi-Pack unit's horn - so much so that there's no need to use front fill enclosures. In short, what I see is what I hear: when I can see the throat of the waveguide, even from a seat off to one side, this means I'll hear everything, down to the last Hertz."
He continued: "For me, this is what counts in a line-array. I almost forgot another pleasant confirmation - the decision to integrate the Low-Packs in the flown system. This resulted in a coherent sound front over the entire audio spectrum, without any unwanted on-stage spill, thanks to the cardioid response of this original, powerful bass section. Moreover, the low-frequency distribution has also been improved in the hall, with less difference in level between the front and back rows of the audience. I'm really happy."
(Sarah Rushton-Read)
