Half a croissant, on a plate, with a sign in front of it saying '50c'
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High Fidelity Gramophone

Completely mechanical, no electrical components.
  [vote for,

When you wind the unit up, you're not only winding the turntable, but you're "loading" the mechanical amplification system.

It works by virtue of a system of levers. A wound up spring provides the power for this amplification. When a very small vibration is sent into the system, it "releases" the tension provided by the spring and transfers the vibration to a much larger diaphragm movement system than would be possible with just the very slight energy coming from a wiggling needle.

As far as tone manipulation, this is all handled by a series of frequency tuned baffles and absorption modules. You'd actually be able to control bass, midrange and treble.

Steampunk hi-fi.

doctorremulac3, Sep 26 2019

Mechanical amplifiers http://www.douglas-...hamp/trumechamp.htm
The magnificent Museum of Retro-Tech [8th of 7, Sep 28 2019]


zen_tom, Sep 26 2019

       RE: Link. This is one of the reasons to get up in the morning, every day you learn something.   

       A pnumatically powered audio amplifier.   

doctorremulac3, Sep 26 2019

wjt, Sep 28 2019

       See also <link> for mechanical and pneumatic amplifiers.
8th of 7, Sep 28 2019

       Wow, clever stuff.
doctorremulac3, Sep 28 2019

       Not really, it's just a case of clicking the "link" button and then copying and pasting the URL.
8th of 7, Sep 28 2019

       Don't be so modest.
doctorremulac3, Sep 28 2019

       "Oh, the humility ... "
8th of 7, Sep 28 2019

       But [8th] has much to be modest about.
MaxwellBuchanan, Sep 28 2019


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