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Please Support RF Cafe by purchasing my ridiculously low-priced products, all of which I created. RF & Electronics Symbols for Visio RF & Electronics Symbols for Office RF & Electronics Stencils for Visio T-Shirts, Mugs, Cups, Ball Caps, Mouse Pads These Are Available for Free |
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A Passive Audio Amplifier for Your iPhone or iPad
Christopher
Locke has taken a low tech approach to making amplifiers for your iPhone
and iPad. Rather than build an electronic contraption out of electrical
components and speakers that requires a power source, he 'repurposes'
discarded brass musical instruments for the task - ingenuous, I
must say. Valves and levers are removed and a fancy metal cradle is
attached to the reed port in a manner that positions the mobile device's
speaker directly over the instrument's air intake. Videos are provided
demonstrating the significant amplification afforded by the arrangement.
It's hard to tell whether the full audio range is amplified sufficiently
or if only those frequencies within the normal playing range are affected.
Regardless, these functional sculptures would make a great conversation
piece or even a gift for a musician friend.Posted February 2013
Copyright: 1996 - 2026 |
About RF Cafe RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a lady's voice announced "You've Got Mail" when a new message arrived... |
Copyright 1996 - 2026 All trademarks, copyrights, patents, and other rights of ownership to images
and text used on the RF Cafe website are hereby acknowledge My Hobby Website: My Daughter's Website: |
