Quote:
Originally Posted by Edward Ng /img/forum/go_quote.gif
Doesn't matter, it's the foam; even if I use the T400 bare (not in combination with any flanged tip), it's much too dark.
-Ed
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When using a tip, the material of the tip will affect sound quality. For example, a Comply foam tip will absorb high frequency energy, reducing the amplitude at your ear drum (kinda like having speakers on carpet). A silicon tip, on the other hand, does not have sound absorbing properties, so it will not attenuate the high frequencies (kinda like speakers on a tile floor).
So, if you have foam under silicon the foam will increase isolation by contouring to your ear canal, but will not be in the sound path and will not affect sound (at least in my configuration). The material used for the tip that contacts your ear canal closest to your ear drum will determine the sound.
I have large/very large ear canals and this works great for me. People with smaller ear canals may have the foam compress the tip, which could reduce the treble. If there is reduced treble, try the foam further back on the nozzle, closer to the body of the IE8.
Also, angle of the tip and depth of insertion can affect the sound, so using foam under silicon might be resulting in a different angle or tip placement, changing the sound.