# Mics

## Updated Audio Equipment List

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

[![image.png](https://wiki.amaravati.org/uploads/images/gallery/2024-09/scaled-1680-/qLuimage.png)](https://wiki.amaravati.org/uploads/images/gallery/2024-09/qLuimage.png)

with:

<table border="1" id="bkmrk-application-descript" style="border-collapse: collapse; width: 100%; height: 156.578px;"><colgroup><col style="width: 16.6865%;"></col><col style="width: 17.9976%;"></col><col style="width: 15.3754%;"></col><col style="width: 16.6865%;"></col><col style="width: 10.7271%;"></col><col style="width: 22.646%;"></col></colgroup><thead><tr style="height: 63.3906px;"><td style="height: 63.3906px;">APPLICATION</td><td style="height: 63.3906px;">DESCRIPTION/TYPE</td><td style="height: 63.3906px;">LOCATION</td><td style="height: 63.3906px;">MANUFACTURER &amp; REF

(NOTE 1)

</td><td style="height: 63.3906px;">Quantity</td><td style="height: 63.3906px;">NOTES / ACCESSORIES</td></tr></thead><tbody><tr style="height: 63.3906px;"><td style="height: 63.3906px;">Zone 1</td><td style="height: 63.3906px;">Wireless SM58 Microphone  
System</td><td style="height: 63.3906px;">Sala (AV Cabinet\*)</td><td style="height: 63.3906px;">[Shure GLXD24+/SM58](https://www.thomann.co.uk/shure_glxd24_sm58.htm)  
</td><td style="height: 63.3906px;">2</td><td style="height: 63.3906px;">2x Dual band 2.4GHz and 5.8GHz Digital Wireless System with microphone</td></tr><tr style="height: 29.7969px;"><td style="height: 29.7969px;">Zone 1</td><td style="height: 29.7969px;">Rechargeable Li-Ion batteries </td><td style="height: 29.7969px;">Sala (AV Cabinet)</td><td style="height: 29.7969px;">[Shure SB904](https://www.thomann.co.uk/shure_sb904.htm)</td><td style="height: 29.7969px;">2</td><td style="height: 29.7969px;">For Shure GLXD24+/SM58 System</td></tr><tr><td>Zone 1</td><td>Wired SM58 microphones with switch</td><td>Sala (AV Cabinet)</td><td>[Shure SM58S](https://www.thomann.co.uk/shure_sm58s.htm)</td><td>2  
  
</td><td>We have old mics we can use as well in addition to this in zone 2.</td></tr></tbody></table>

**\*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.