Passive Audio Amps For Smart Phones

These are acoustic amplifiers for smartphones. They don't need electric power to operate and there are no moving parts. They work like a megaphone (speaking-trumpet, bullhorn, or loudhailer). Everyone that I have shown one to has said something like Wow, I want one of those! So I have built a few of them.

Of course there are more Hi-Fi ways to listen to audio on your smartphone but who would want to plug an elegant smartphone into some cheap, plastic gadget? Or even use Wi-Fi or Bluetooth, which are a pain in the neck to set up, even on a smartphone.

These have been made with hardwood bases and some of them are exotic hardwoods with interesting grain patterns. The horns are polished brass made from mostly old horns that had rubber bulbs on the ends and were used in times gone by by taxis and even clowns in circuses. These horns have been re-purposed, reshaped, soldered, and polished.

The horns are now on display and for sale at:

Owls Nest
2006 Kelty Road
Franktown, Colorado 80116

The two large horns the trombone and the gramophone are difficult to pack and ship to they are for local pickup only. The remainder can be sent to you. I have the cowboy horn and the rest are in stock at the Colorado coffee shop.

Please call for pricing and availability or stop in for a demo and a great cup of espresso.

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Brad Dye, Ron Mercer, Allan Angus, Vic Jackson, and Ira Wiesenfeld are friends and colleagues who work both together and independently, on wireline and wireless communications projects. Click here for a summary of their qualifications and experience. Each one has unique abilities. We would be happy to help you with a project, and maybe save you some time and money.

Note: We do not like Patent Trolls, i.e . a person or company who enforces patent rights against accused infringers in an attempt to collect licensing fees, but does not manufacture products or supply services based upon the patents in question. We have helped some prominent law firms defend their clients against this annoyance, and would be happy to do some more of this same kind of work.

If you would know the road ahead, ask someone who has traveled it.
Chinese Proverb

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I am involved in promoting the worldwide use of pagers, both one-way and two-way, and paging on the Internet, so if you would like to share any ideas you have about new and innovative applications, please send them to me. I am very sorry, but due to the large volume of e-mail that I receive, I cannot respond to all the requests for more information on paging. I get a lot of very interesting messages, especially from students from all over the world. Several have asked for help in writing papers at school. As much as I would like to, time just doesn't permit. Thank you for visiting my web site.

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You can get a good indication of my ideas and experience in Pager Marketing, Paging Infrastructure Sales, and Paging Systems Engineering by reading my various papers on these subjects. There are copies following in English, Spanish, and Portuguese. For additional information about me please read: Who is Brad Dye?

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Although this web site is not going to be of great interest to the general public, many people searching for information on paging have found THE PAGING INFORMATION RESOURCE to be very helpful. Please read the comments from visitors page. [en espaol tambin]