What does bass roll off mean?

Dec 7, 2006 at 9:24 AM Post #2 of 6
The term "roll off" as we use it means an attenuation of a certain part of the frequency response of a headphone. Here are some examples:

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Here, the deep bass frequencies are rolled off.

graphCompare.php


Here, the roll off starts at around 1khz. Although to me, this could be more accurately be described as a "suckout"; a severe attenuation of a small part of the frequency range.
 
Dec 7, 2006 at 9:26 AM Post #3 of 6
Generally this refers to the frequency response dropping off quite noticeably towards the lower frequencies in the bass region. This typically lends bass a certain softness.
 
Dec 7, 2006 at 9:36 AM Post #4 of 6
Looks like I was a wee bit too slow again.
Quote:

Originally Posted by PiccoloNamek /img/forum/go_quote.gif
graphCompare.php


Here, the roll off starts at around 1khz. Although to me, this could be more accurately be described as a "suckout"; a severe attenuation of a small part of the frequency range.



One should, however, read IEM FR graphs with a bit of caution, as what one sees quite obviously strongly disagrees with what one hears when compared to "full-blown" cans. (From the ER-6 graph you'd be hard pressed to tell that these beasts are quite thin-sounding indeed, and people tend to term the E500 neutral though it doesn't really look like it on the graph.)
 
Dec 7, 2006 at 9:38 AM Post #5 of 6
True. There are no outer ear interactions with IEMs, and they are equalized accordingly. Well, ideally, anyway.

Although I've never, ever heard anyone call the E500 neutral.
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