File:Redwood Audio Amplifier for Bellaphone Speakers (2011-09-17 by Kevin B 3).jpg

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I collaborated with Jordan Waraksa on a project that is currently on display at the Haggerty Museum of Art. He sculpted a pair of wooden acoustic horns called Bellaphone 5 & 6 out of walnut. Each horn rests on a redwood base that houses a small speaker.

I developed and built the electronics for the horn’s amplifier, whose chassis Jordan also sculpted from redwood. Because the chassis is wood and has no vents (for aesthetics), electrical efficiency became a high priority in order to prevent overheating. I chose to use a Maxim 98400A class D amplifier driven by a high efficiency switching 15V DC power supply. I added a digital signal processing chip from Analog Devices to increase the bandwidth of the horn and smooth out its frequency response (i.e. to improve the audio fidelity).

Check out the full blog post: milwaukeemakerspace.org/2011/09/redwood-audio-amplifier/
Date
Source Redwood Audio Amplifier for Bellaphone Speakers
Author Kevin B 3
Other versions
  • Redwood Audio Amplifier and Bellaphone 5 and 6 Speakers (2011-09-17 by Kevin B 3).jpg
    Redwood Audio Amplifier and Bellaphone 5 and 6 Speakers (2011-09-17 by Kevin B 3).jpg
  • Redwood Audio Amplifier for Bellaphone Speakers (2011-09-17 by Kevin B 3).jpg
    Redwood Audio Amplifier for Bellaphone Speakers (2011-09-17 by Kevin B 3).jpg

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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by Kevin B 3 at https://www.flickr.com/photos/22850192@N03/6223876659. It was reviewed on 23 April 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0.

23 April 2015

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current02:19, 23 April 2015Thumbnail for version as of 02:19, 23 April 20153,264 × 2,448 (2.6 MB)Clusternote (talk | contribs)Transferred from Flickr via Flickr2Commons

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