Emile Berliner is the inventor of the phonograph and the gramophone. There is an instruction booklet that is vintage in regards to sound recording instruments located in the Library of Congress. The instruction booklet cover is not just as glossy as the one found in modern day music shops. However, the vintage operating manual for Berliner’s gramophone is just as lengthy as ones found in today’s music stores.
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Vintage Operating Manual for Berliner’s Gramophone. Very cool.
The discussion on ductwork noise transmission from Acoustic Fields highlights crucial aspects of HVAC system acoustics. The movement of air…
Great build plans. thank you Denis
You must use absorption. Never place a chair against a wall.
A friend and I built several diffusors using these plans and they turned out absolutely beautiful. Very good instructions and…