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Mics

Updated Audio Equipment List

The audio team would like to replace the three items below:

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with:

APPLICATION DESCRIPTION/TYPE LOCATION

MANUFACTURER & REF

(NOTE 1)

Quantity NOTES / ACCESSORIES
Zone 1 Wireless SM58 Microphone
System
Sala (AV Cabinet*) Shure GLXD24+/SM58
2 2x Dual band 2.4GHz and 5.8GHz Digital Wireless System with microphone
Zone 1 Rechargeable Li-Ion batteries  Sala (AV Cabinet) Shure SB904 2 For Shure GLXD24+/SM58 System
Zone 1 Wired SM58 microphones with switch Sala (AV Cabinet) Shure SM58S 2

We have old mics we can use as well in addition to this in zone 2.

*Note: The AV Cabinet seems more suitable for a locating the mic wireless system (due to a Wi-Fi access point in the AV Room creating interferences)

Comment from Neil, Acoustic Engineer

Both analogue and digital mics can suffer interference. But slightly different characteristics. I think the digital systems have perhaps more risk on cutting out altogether within a full venue (lots of mobile phones etc). But I get the impression that the quality of the product is likely more important. For example I believe the Shure QLX-D wireless systems are a bit of current industry standard for quality hardware.

Inevitably, analogue mics are going to be simpler to operate and probably less likely to cut out altogether - although can also be prone to stray analogue interference.

It could be that a decent old school Shure analogue system is suitable, and provides more comfort and less risk, such as

BLX288/B58 - Wireless Dual Vocal System with two Beta 58A - Shure United Kingdom

Reply from Tan Karunno

While it is true that both analogue and digital microphones suffer from interferences, they have different intermittence characteristics. The noise-floor threshold in a digital system cuts out if there is no data coming through, getting indistinguishable from the background noise-floor, while it creeps in on an analogue transmitter/receiver system. In the Shure GLXD24+ Wireless System, Shure has tried to specifically address this issue of using the 2.4GHz and 5.8GHz frequency bands, by incorporating a dual band system in the GLXD24+, that runs on both - switching to the other band if needed.

Also, the Shure QLX-D Wireless System requires a licence in order to use it, the Shure GLXD24+/SM58 System does not require one.