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please explain unusual glass speakers
Bartholomew MacG...
post Sep 27 2012, 12:00
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Here's what this page says about these weird glass speakers:

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Unlike traditional speakers that project sound in one direction, a sound generator in the base of the Greensound speakers vibrates the glass to project the sound from both sides. Different areas of the glass are responsible for producing different frequency sounds - the curved area at the top produces high frequency sounds, the middle produces mid-range sounds, while low frequencies are produced by the area at the bottom near the base. The use of glass also provides the opportunity for some nice color changing lighting to be built into the base.


http://www.gizmag.com/greensound-technolog/16372/


I was wondering if someone could explain that.
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punkrockdude
post Sep 27 2012, 12:21
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Interesting. Thank you for the link and I would also like to hear some more technical things about them from someone who might have tried them. Regards.
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mzil
post Sep 27 2012, 17:27
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If you have enough money and can apply enough force, almost any flat panel material can be made to vibrate and therefor will excite the air around it and act as a speaker. A large sheet of glass, which is extremely heavy compared to the sheet of mylar film used in most planar speakers, makes little sense, but it sure looks pretty.


I suspect these speakers have a very narrow dispersion in the high frequencies, making them a poor choice for a listening audience larger than one, a roller coaster frequency response, and with a crossover to the subwoofer at 300 Hz, an easily localizable low bass content [instead of it being "omni-directional" as a subwoofer should be]. I'll pass.

This post has been edited by mzil: Sep 27 2012, 17:29
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Martel
post Sep 27 2012, 18:41
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I would not trust this until there are some real pictures or videos showing these in action. All they seem to have at the moment are a few computer-generated images.

Their domain is registered by a completely different company (Ampronix):
http://www.networksolutions.com/whois-search/gstspeakers.com

Maybe just an investor bait?


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andy o
post Sep 29 2012, 06:39
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The first comment says something about the "Ed." at that site.

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Interesting that the subwoofers go to over 100 kHz, more than an order of magnitude over the acual speaker units. Is this a typo, or are they making up for the somewhat lacking high range of the stereo units?

- No, not a typo. You're right though. It does raise questions about the performance of the actual speaker units when the subwoofer has a higher frequency response than they do. Ed.


"180kHz" for a subwoofer not a typo?

QUOTE
Bravura stablemate and doesn't pack the same punch. It has an output of 25 Watts, frequency response of 60 Hz to 180 kHz and decibel level of 91.8.p


Apparently the 400Hz sub one also said 400kHz before but the "Ed." didn't think it was a typo either.

This post has been edited by andy o: Sep 29 2012, 06:47
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andy o
post Sep 29 2012, 06:44
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btw, 30 bucks turns your existing windows into speakers.

http://www.thinkgeek.com/product/eaf8/?srp=36
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punkrockdude
post Sep 29 2012, 10:40
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QUOTE (andy o @ Sep 29 2012, 07:44) *
btw, 30 bucks turns your existing windows into speakers.

http://www.thinkgeek.com/product/eaf8/?srp=36
That's a cool geeky thing! biggrin.gif
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