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Technical
Interesting thing NOT to do with heater tubes.
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<blockquote data-quote="Guest" data-source="post: 218689"><p>Its all to do with the design of the corrugated section. With a fairly flat tube it will allow the noise to resonate forward bouncing off opposing sides of the tube as you found out. The effect is like how noise is created when you blow into an empty bottle. </p><p></p><p><img src="http://www.morehouse.edu/facstaff/cmoore/Phy254Waves3_files/image093.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>With the corrugations it breaks the path of the airwaves carrying the sound by reflecting them back on each other and acts as a damper instead of strenghening them through resonance. Works the same way as baffles in your exhaust.</p><p></p><p>I had no idea that the sound would carry so badly into the front :shock:</p></blockquote><p></p>
[QUOTE="Guest, post: 218689"] Its all to do with the design of the corrugated section. With a fairly flat tube it will allow the noise to resonate forward bouncing off opposing sides of the tube as you found out. The effect is like how noise is created when you blow into an empty bottle. [img]http://www.morehouse.edu/facstaff/cmoore/Phy254Waves3_files/image093.jpg[/img] With the corrugations it breaks the path of the airwaves carrying the sound by reflecting them back on each other and acts as a damper instead of strenghening them through resonance. Works the same way as baffles in your exhaust. I had no idea that the sound would carry so badly into the front :shock: [/QUOTE]
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EarlyBay Forums
Technical
Interesting thing NOT to do with heater tubes.
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