Answers.Body: <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>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2022-07-27T16:18:45.587Z
Answers.LastActivityDate: 2022-07-27T16:18:45.587Z
Answers.UserDisplayName: LouR
Body: <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>
  
Tags: <localisation><recommendations><speakers>
Title: Kit suggestion for programmable, weatherproof, speaker
ThreadText: # 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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