Each year, the Mexican Telephone Workers Union (STRM) holds a festival for its members at the Plaza de Toros in Mexico City, the world’s largest bullring with a capacity of more than 40,000 seats.
This year’s event took place on August 1st and featured performances from popular Mexican singers Carlos Rivera and María José, and Colombian music groups Piso 21 and La Sonora Dinamita.
As usual, sound for the event was provided by leading local production services company Tecno Son who deployed their NEXO STM system to cover an audience that rose quickly from the floor of the venue to the highest tier and wrapped right around the edges of the stage from left to right.
Left and right FOH hangs of 15 x STM M46 Main and B112 Bass Extension line array elements with 3 x M28 down fill boxes were supplemented by side arrays of 9 x M46/B112 plus 3 x M28s.
“The key to the project design was to maintain an equidistant relationship between the arrangement of the NEXO STM S118 Subs hung side-to-side to achieve the cardioid effect and the horizontal dispersion open to the sides” reports Tecno Son owner Sergio Zenteno.
“We had the opportunity to order the rigging structures precisely as required, so were able to achieve the same distances between the centre of the subs and both the front and side M46/B112 arrays.
“We used the STM Kelping Beam to achieve the pronounced vertical angles and ensured that the M28 down fills on the main and side arrays were at the same height to keep everything in phase” continues Sergio. “Then we could set the same delay time for the front and side arrays, relative to the centre of the subs.
“The result was spectacular! A forceful sound pressure and a completely homogeneous sound response.”
