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<blockquote data-quote="Ivan Beaver" data-source="post: 137878" data-attributes="member: 30">Re: Notching Out ModesRoom modes are based on the dimensions of the room-with the smallest (usually the height) dimension being the dominating mode.Since different freq have different sizes, when the lengths of the waves (or multiples) equal the dimensions then there will be &quot;standing waves&quot;, or points at which the reflected waves either sum together (causing boosts) or cancel (causing nulls).As should be obvious-as the room gets bigger, the room modes move down in freq.There is no &quot;hard line&quot; when the room mode part of the room start to die away and the diffusion zone starts to take over.As with&nbsp; many other things audio-there is a sizable &quot;grey area&quot;.Yes the room modes will cause hot spots at some places at one freq and cancellations at other places with the same freq-as I described earlier in my experiment.&nbsp; These hot spots and nulls will move around the room at different freq.I HIGHLY suggest actually doing it-not just assuming I am correct.It is often quite eye/ear opening.</blockquote>

[QUOTE="Ivan Beaver, post: 137878, member: 30"] Re: Notching Out Modes Room modes are based on the dimensions of the room-with the smallest (usually the height) dimension being the dominating mode. Since different freq have different sizes, when the lengths of the waves (or multiples) equal the dimensions then there will be "standing waves", or points at which the reflected waves either sum together (causing boosts) or cancel (causing nulls). As should be obvious-as the room gets bigger, the room modes move down in freq. There is no "hard line" when the room mode part of the room start to die away and the diffusion zone starts to take over. As with many other things audio-there is a sizable "grey area". Yes the room modes will cause hot spots at some places at one freq and cancellations at other places with the same freq-as I described earlier in my experiment. These hot spots and nulls will move around the room at different freq. I HIGHLY suggest actually doing it-not just assuming I am correct. It is often quite eye/ear opening. [/QUOTE]

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