The Imam Mousa Kazim Holy Shrine in Kazmein, Iraq, is now using a new sound system for its adhān – the Muslim call to prayer.

The installation was handled by local contractor Farasout Negar, and required 360° coverage and a very high SPL. To meet these and other criteria, Farasout Negar designed a system based on 16 Community RSH-462 exponential FocusedArray horn systems. Each voice-range RSH-462 uses four Community M200 ferrofluid-cooled compression drivers mounted to a hand-laminated, reinforced composite fibreglass horn-array with a 60° horizontal and 20° vertical coverage pattern. With a sensitivity of 117dB (1W/1m) and a 750W programme power handling the RSH-462 provided the SPL required.

Coverage was achieved by mounting four RSH-462 in each of four minarets, at a height of 33m from the ground. Four Lab.gruppen C28:4 four-channel power amplifiers are used to drive the Community loudspeakers and system management is handled by an XTA DP446.

Although mounted in the minarets, the loudspeakers are open to the full environmental conditions of Kazmein, so their all-weather capability was another important consideration. The one-piece, non-metallic diaphragm of the RSH-462 faces forward, isolating the voice coil and magnetic structure of each driver from the environment, providing the exceptional resistance to the effects of humidity and dust needed.

‘We are very pleased with the sound levels, high intelligibility and coverage we have achieved with the RSH-462 loudspeakers,’ says Milad GhorbanNejad, Commercial manager of Farasout Negar. ‘The combination of Community, Lab.gruppen and XTA has provided a system that ensures quality and long-term reliability’.

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