<p>have you considered using a Minirig 3? These are super powerful yet compact (W = 101.6mm H = 73mm), high quality speakers with built in amplifier (40W), big on the festival scene. Battery life is around 100+ hours. You can connect to it via bluetooth or a 3.5mm lead.</p>
<p><a href="https://minirigs.co.uk/speakers/bluetooth-minirig-3" rel="nofollow noreferrer">https://minirigs.co.uk/speakers/bluetooth-minirig-3</a></p>
<p>I've used one in the field before and it was great, with some minor weatherproofing. For producing a time-sync signal I think this would work.</p>

CC BY-SA 4.0
2022-07-27T16:18:45.587Z
2022-07-27T16:18:45.587Z
LouR
<p>Has anyone got recommendations for a battery powered metronome/speaker that could be used to emit a regular sound over a period of ~1 week and a radius of 100-200m outside, so that it could be used to time-sync 4 or 5 recording units for localisation?</p>

<localisation><recommendations><speakers>
Kit suggestion for programmable, weatherproof, speaker
# Kit suggestion for programmable, weatherproof, speaker

(Asked by: username_0 on 2022-07-14)

Has anyone got recommendations for a battery powered metronome/speaker that could be used to emit a regular sound over a period of ~1 week and a radius of 100-200m outside, so that it could be used to time-sync 4 or 5 recording units for localisation?

**Tags:** localisation, recommendations, speakers


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## 1 answers

### Answer by username_1 on 2022-07-27. Score: 3

have you considered using a Minirig 3? These are super powerful yet compact (W = 101.6mm H = 73mm), high quality speakers with built in amplifier (40W), big on the festival scene. Battery life is around 100+ hours. You can connect to it via bluetooth or a 3.5mm lead.

<https://minirigs.co.uk/speakers/bluetooth-minirig-3>

I've used one in the field before and it was great, with some minor weatherproofing. For producing a time-sync signal I think this would work.


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