Passive 1870's sound amplificator
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Published on October 30, 2012
Description
Horn amplificator for your IPhone 4/4s
based on the ducts found on good old gramophones!
Amplifies the sound pressure from 70dB to 85dB ;)
based on the ducts found on good old gramophones!
Amplifies the sound pressure from 70dB to 85dB ;)
Instructions
I have printed both parts on my ultimaker using netfabb
License
Passive 1870's sound amplificator by DigitalTargeter is licensed under the Attribution - Share Alike - Creative Commons license.
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