entertainment • presentation • installation

Tri-Wi loud and clear in Luanda

The event took place in the Camama Stadium 11 de Novembro in front of an audience of 100.000

21 December 2012

Angola - Maybe it is because Luanda - the capital city of Angola - lies south of the Equator that news of a major event has only just reached these shores; for back in late summer a major tri-Wi wireless audio system was used at the closing ceremony of the MPLA 2012 Angolan legislative election.

The event took place in the Camama Stadium 11 de Novembro in front of an audience of 100.000 and featured several major Angolan artists and the President of Angola himself, José Eduardo dos Santos who delivered the main speech.

Clearly, presidents like to be heard and, being no exception, José Eduardo dos Santos' words were distributed to an audience covering some 110.000sq.m by a large Adamson Y-Axis system powered by LAB gruppen amplifiers. Three delay towers, each situated some 500m from the main PA and equipped with tri-Wi Rx units, were fed their respective audio signals wirelessly from a central tri-Wi Tx unit from the main stage.

The entire event was planed and supervised by Wladimiro Garrido, technical director of the Portuguese pro audio distributor Merging Select, based in Lisbon.

Said Wladimiro, "Running cable in trenches across a stadium that would be occupied by 100,000 people was quickly ruled out as being both impractical and costly, so we explored the idea of sending the signal wirelessly. We initially considered an IEM system as the way to go but were concerned that the distance would represent a challenge. Additionally, while IEMs are great at doing the job they were designed for, they lack the frequency range that a full spectrum PA can deliver.

"Having stumbled across tri-Wi we discovered that it offered just what we needed: full spectrum audio, low latency and an amazing wireless range."

A tri-Wi system comprises of two main components, the tri-Wi transmitter [Tx] and the tri-Wi receiver [Rx] used in combination with a variety of antennae to transmit audio signal up to 2.3km. An optional Repeater unit [Rp] is available where greater distances are required.

(Jim Evans)


Tag Cloud

Luanda Angola major event tri-Wi wireless audio system used audience Angolan José Eduardo dos Santos main PA Rx wirelessly Tx unit across signal IEM range full spectrum

Related Stories from LSi Online

13 December 2012

Fisherman's Friends go digital at Wells Cathedral

Fisherman's Friends go digital at Wells CathedralUK - A challenging gig at Wells Cathedral turned out to be the most successful yet for Port Isaac's Fisherman's Friends - with a little help from the Roland M-480 Live Digital Mixing Console! The Fisherman's Friends ... More >>

15 June 2011

10K launches wireless solution at ABTT

10K launches wireless solution at ABTTUK - 10K is to launch what it believes is "the world's first real-time professional wireless Audio and DMX wireless solution "at the ABTT Show in London this week. Featuring concurrent transmission and reception of ... More >>

21 April 2010

Robe lights Africa Cup of Nations

Robe lights Africa Cup of NationsAngola - Robe moving lights took centre stage in the 11th November Stadium, Luanda, Angola, for both the Opening and Closing Ceremonies of the 2010 Africa Cup of Nations football tournament. Lighting for the events ... More >>



Artistic Licence



New Day

Le Maitre

Le Maitre



Flex Rental Solutions