On December 11, 2013, the 27th Southeast Asian Games (referred to as SEA Games) opening ceremony was held at 30,000-spectators Wunna Theikdi Sports Stadium in Naypyidaw, Myanmar. SEA Games is the region’s biggest sporting event, held every two years. 11 Southeast Asian countries participated at the 27th SEA games with nearly 5000 athletes participating in 37 sports. MIPRO is the main wireless systems supplier for the opening ceremony on December 11 and closing event on December 22. The audio equipment includes wireless microphones, wireless in-ear monitoring systems and wireless intercom system.
Wireless microphone systems
2 groups of wireless microphone systems were used in the opening ceremony, the first contained 4 ACT-828 dual-channel digital receivers and 1 spare receiver, 1 AD-707a antenna divider and 2 AT-90W log antenna, of which 2 ACT-80H handheld were provided for the masters of ceremonies, 2 BC-100 boundary mic with ACT-80T and MM-202 gooseneck microphone for Myanmar’s Vice President, 1 ACT-80T fitted with MU-53HN headworn mic for the flag captain. 1 channel for the above three regions each is reserved for back-up.
The second wireless microphone system contained 5 ACT-74 quad-channel analog receivers and 1 spare receiver, 1 AD-707a antenna divider and 2 AT-90W log antenna, while 16 ACT-70H handheld were used for the two program presenters, Chairman of Myanmar Olympic Committee, athlete oath and singers.
Wireless in-ear monitoring system
In such a large event, it was crucial that program presenters, singers, and the thousands of performers were able to monitor their music and receive the relevant program information in sync. This was why the wireless IEM system played a crucial role.
The event features 8 monitor channels, coupled with 8 MI-808T transmitters. To avoid Intermodulation, every 4 MI-808T transmitters’ output signals were integrated into one signal via AD-808 antenna combiner. Due to the wide range of the performances, the original 100mW output power of MI-808T is unable to cover the range, so AD-808 had to be connected to the AD-90A high power amplifier which upgraded the output power to 1W to meet the requirement.
In addition, to cover the wide dynamic for a large number of performers, sound engineers use the AT-100 circularly polarized directional antenna as a transmitting antenna. With its polarized feature, the AT-100 can effectively reduce the polarization loss of the antenna and obtain optimal signal quality no matter the vertical or horizontal pattern. The event used more than 400 sets of monitoring receivers and earphones for all performers.
MIPRO senior sound technical consultant, Daniel Ku stated, "MIPRO’s latest antenna system delivers superior signal transmission quality, especially in such a large sports field. Reception range and signal stability is the biggest challenge, as the shortest distance between the main stage and the mixing console is 150 meters while the longest is more than 350 meters. MIPRO wireless microphones systems plus antenna systems as the “Gold combination” to achieve “zero defects” performance with excellent sound quality and stable reception. All sound team members are very satisfied with the result!”
There are 7 AT-90W wideband log directional antenna and 2 AT-100 circularly polarized directional antenna used for both ceremonies. 2 AT-90W with ACT-828 digital systems provided for Myanmar’s Vice President, masters of ceremonies and the flag captain. Additionally, 2 AT-90W with ACT-74 wideband analog systems were given to program presenters, the Chairman of Myanmar Olympic, the athlete oath and singers. For staff communication, another 2 AT-90W with ACT-74 wideband receiver systems and 1 AT-90W as a transmitting antenna with the intercom system MTS-100T and MTG-100Ra were provided. All monitor systems by performers utilized 2 AT-100 with the IEM system MI-808T & MI-808R.