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Daisy-chaining wireless at Chiayi Nanmen Presbyterian Church

Daisy-chaining wireless at Chiayi Nanmen Presbyterian Church

Daisy-chaining wireless at Chiayi Nanmen Presbyterian Church


Chiayi Nanmen Presbyterian Church relocated to its current site in the Taiwanese city in 2008. As its flock continued to expand, the church decided to build separate chapels for its Taiwanese and Mandarin Chinese speaking congregants. These were completed at the end of 2018 and the site has been equipped with wireless microphone systems from Mipro.

What now exists is a three-storey building with the main chapel on the second floor, while the deputy hall and the fellowship hall are found on the first floor. ‘The building was not pre-wired for wired microphones,’ explained AV engineer, Daniel Ku, who was in charge of planning and operates the AV systems for the new hall. ‘Therefore, all the microphones needed to be wireless.’

Ku chose several of Mipro’s wireless microphone and wireless portable public address systems with advanced wireless interlinking speakers to be installed across the different halls.

In the main hall is a 16-channel wireless system comprising an ACT-848 quad-channel digital receiver, three ACT-74 quad-channel true diversity receivers, an AD-708 auto gain control antenna divider and two AT-70W omnidirectional antennas. The ACT-848 is paired with four TA-80 plug-on transmitters: one for the piano, one for the bass and two for the choir. The trio of ACT-74s are paired with six ACT-70HC rechargeable wireless microphones for capturing speech and singing. These are joined by six ACT-70TC bodypack transmitters, two of which are installed within a BC-100 desktop conference microphone base with an MM-205 gooseneck microphone, used as a pair of podium microphones. Another is used for the pastor with an MU-53L lavalier microphone, while the other three are used for electronic drums, an electric guitar and an acoustic guitar.

Meanwhile, in the deputy hall, a 14-channel wireless system has been employed. It includes an ACT-848 quad-channel digital receiver, an ACT-72 dual-channel true diversity receiver, a pair of ACT-2414 quad-channel 2.4GHz digital receivers, an AD-708 auto gain control antenna splitter and two AT-70W omnidirectional antennas. The ACT-848 pairs with three TA-80 plug-on transmitters – one for the piano and two for the shotguns – while the fourth channel is paired with the ACT-80TC for the musical instruments. The ACT-72 is paired with two sets of BC-100 desktop conference microphone bases and MM-205 gooseneck microphones on the podium. The ACT-2414s are used with five ACT-24HC rechargeable handheld wireless microphones and three ACT-24TC rechargeable bodypack transmitters for capturing speech, singing and the instruments.

Finally, the fellowship hall has been equipped with an MA-909 wireless mixer with two receiving modules and an MT-92 transmitting module, as well as two MA-303 wireless portable PA systems. Two MRM-70B receiving modules receive the signal from an ACT-32H handheld microphone and distribute the mixed audio signal through the MT-92 to two MA-303SB systems for receiving and public addressing.

Signals from the main hall are transmitted to the deputy hall and the fellowship hall via wireless interlinking. ‘Each space has its audio system operated independently,’ explained Ku. ‘However, the audio and video signals of the main hall must be connected to the deputy hall and the fellowship hall for the parishioners to watch the live feed simultaneously from the main hall. All the signals from the main hall are input to the mixer, and then transmitted through the MT-92A interlinking transmitter to the ACT-311Bs in the deputy hall and the fellowship hall respectively, and then connect to the mixer, thus the daisy chaining of the audio system is completed.’

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