Reply to thread

Message

<blockquote data-quote="Ivan Beaver" data-source="post: 83813" data-attributes="member: 30">Re: TH118vsSB1000zIt looks like you some reflective surfaces nearby-and the distance from each of the cabinets to the surface would be different if they are in different locations-even slightly different as the other cabinet would affect the &quot;path&quot;.Specifically around 90Hz (as indicated by the notch in the response and the phase shift).It gets kinda hard to make everything equal.Just like when listening to full range speakers side by side.&nbsp; In many cases (unless you are in a large room or outside) they will sound different-because of the different reflection paths due to the physical location of the cabinet.Something else to consider is the measurement distance.&nbsp; With drivers that are loaded very differently-measuring to close can affect what the &quot;real&quot; effect of the speaker is.&nbsp; That is the reason it is best to measure a lot further away and &quot;back calculate&quot; to get an idea of how the cabinets will response in a real room.&nbsp; Yeah the differences of the close measurement are &quot;real&quot; at least for that measurement position.&nbsp; But (at least in my opinion) the measurements (at least on a spec sheet) should give real information about how the loudspeaker performs so that its performance can be predicted in a larger space.I realize you were not in the best of conditions-and we all deal with that.&nbsp; I was just pointing out some &quot;little things&quot; that can affect what the measurement looks like.</blockquote>

[QUOTE="Ivan Beaver, post: 83813, member: 30"] Re: TH118vsSB1000z It looks like you some reflective surfaces nearby-and the distance from each of the cabinets to the surface would be different if they are in different locations-even slightly different as the other cabinet would affect the "path". Specifically around 90Hz (as indicated by the notch in the response and the phase shift). It gets kinda hard to make everything equal. Just like when listening to full range speakers side by side. In many cases (unless you are in a large room or outside) they will sound different-because of the different reflection paths due to the physical location of the cabinet. Something else to consider is the measurement distance. With drivers that are loaded very differently-measuring to close can affect what the "real" effect of the speaker is. That is the reason it is best to measure a lot further away and "back calculate" to get an idea of how the cabinets will response in a real room. Yeah the differences of the close measurement are "real" at least for that measurement position. But (at least in my opinion) the measurements (at least on a spec sheet) should give real information about how the loudspeaker performs so that its performance can be predicted in a larger space. I realize you were not in the best of conditions-and we all deal with that. I was just pointing out some "little things" that can affect what the measurement looks like. [/QUOTE]

Verification