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Intermod distortion 2-way vs 3-way
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<blockquote data-quote="Ivan Beaver" data-source="post: 57902" data-attributes="member: 30"><p>Re: Intermod distortion 2-way vs 3-way</p><p></p><p>Something else to consider. Along the lines of "getting hung up on one spec".</p><p></p><p>Yes there will be some interaction between differnet freq-WITH ANYTHING! But how big a deal is that-as compared to a good phase response? Or freq extension-or any number of other "specs".</p><p></p><p>Consider also that doing a 3 way PROPERLY is a lot harder than a 2 way. So theoretically if the 3 way has the "potential" for less IM distortion-is that more important than having a "not so good" alignment between the different passbands to achive a more multiway loudspeaker?</p><p></p><p>Of course if everything is done "to perfection", THEN and only THEN-can we start to say that one aspect is better than another-in a particular "way" loudspeaker.</p><p></p><p>But since we live in the real world-and our loudspeakers are far from perfect-there are a lot of other issue that come into play-or at least must also be considered-before a general comment can be made.</p><p></p><p>I would take a well designed/implemented 2 way over a poorly designed/implemented 3 way anyday.</p><p></p><p>However-as a general rule- the more bands you can "splitup" the signal into-the better. This is for several reasons. First each device is not trying to cover a wide range of freq-so it can be more optimized for the particular band it is trying to do-there will generally be less heating on each individual component-becuase there is less going to it.</p><p></p><p>HOWEVER-also consider this. Let's take 2 sources-lets say completely different sources-say 2 trumpets-yes the kind you blow into. Would you agree that they are seperate- and what happens in one should not affect the other?</p><p></p><p>Now there are all kinds of various freq/notes that can be played (such as like demonstrated with a tone and a voice through a single monitor). When you get "the right" combinations-you will hear all sorts of "beat freq" and "harmonics" and such. NEITHER of which is being played by either instrument.</p><p></p><p>In fact look at simply tuning a guitar. How do you do it? You get one string right-then you play the same note on another string and listen to the "beats". when you don't hear them-it is in tune. If it is way out of tune- you hear a much faster beat than when you are close.</p><p></p><p>The strings are seperate-but the SOUNDS are combining to produce the other tones-ie distortion. If you consider distortion something that is not in the origional signal.</p><p></p><p>As with many things-it is real easy to start going down one path-and it making proper sense-only to realize later that the particular path has "issues" that may not seem real clear at first.</p><p></p><p>I have chased a lot of "rabbits" in my day-only to come up empty handed.</p><p></p><p>HOWEVER-if you learn something from chasing those rabbits-THEN the effort has not been wasted. </p><p></p><p>It is also real easy to get "swayed" from reality-especially in this business.</p><p></p><p>There are "demos" done all the time that attempt to "pove something". And they can appear to be very effective-but often the thing that is actually "proved" is completely different than what the person conducting the demo is actually saying or what the viewer "wants" proved.</p><p></p><p>I remember awhile back I did a side by side with an existing system. It was clear that the system I brought in was much better. There was one guy who simply did not want to have my system go in. So he tried-and tried-and tried to adjust hte house eq to get the current system to sound better-or like mine.</p><p></p><p>At the end of the night he said "well it really wasn't fair-your system sounded a lot better". Somehow I THOUGHT that was the idea.</p><p></p><p>But he was wanting both systems to "sound the same" yet be able to choose (from some other method that he would probably come up with) which one sounded better? OK I'm confused now.</p><p></p><p>But he was just grasping for any "excuse" he could come up with.</p><p></p><p>Our system ended up being installed.</p><p></p><p>Sorry to rant.</p></blockquote><p></p>
[QUOTE="Ivan Beaver, post: 57902, member: 30"] Re: Intermod distortion 2-way vs 3-way Something else to consider. Along the lines of "getting hung up on one spec". Yes there will be some interaction between differnet freq-WITH ANYTHING! But how big a deal is that-as compared to a good phase response? Or freq extension-or any number of other "specs". Consider also that doing a 3 way PROPERLY is a lot harder than a 2 way. So theoretically if the 3 way has the "potential" for less IM distortion-is that more important than having a "not so good" alignment between the different passbands to achive a more multiway loudspeaker? Of course if everything is done "to perfection", THEN and only THEN-can we start to say that one aspect is better than another-in a particular "way" loudspeaker. But since we live in the real world-and our loudspeakers are far from perfect-there are a lot of other issue that come into play-or at least must also be considered-before a general comment can be made. I would take a well designed/implemented 2 way over a poorly designed/implemented 3 way anyday. However-as a general rule- the more bands you can "splitup" the signal into-the better. This is for several reasons. First each device is not trying to cover a wide range of freq-so it can be more optimized for the particular band it is trying to do-there will generally be less heating on each individual component-becuase there is less going to it. HOWEVER-also consider this. Let's take 2 sources-lets say completely different sources-say 2 trumpets-yes the kind you blow into. Would you agree that they are seperate- and what happens in one should not affect the other? Now there are all kinds of various freq/notes that can be played (such as like demonstrated with a tone and a voice through a single monitor). When you get "the right" combinations-you will hear all sorts of "beat freq" and "harmonics" and such. NEITHER of which is being played by either instrument. In fact look at simply tuning a guitar. How do you do it? You get one string right-then you play the same note on another string and listen to the "beats". when you don't hear them-it is in tune. If it is way out of tune- you hear a much faster beat than when you are close. The strings are seperate-but the SOUNDS are combining to produce the other tones-ie distortion. If you consider distortion something that is not in the origional signal. As with many things-it is real easy to start going down one path-and it making proper sense-only to realize later that the particular path has "issues" that may not seem real clear at first. I have chased a lot of "rabbits" in my day-only to come up empty handed. HOWEVER-if you learn something from chasing those rabbits-THEN the effort has not been wasted. It is also real easy to get "swayed" from reality-especially in this business. There are "demos" done all the time that attempt to "pove something". And they can appear to be very effective-but often the thing that is actually "proved" is completely different than what the person conducting the demo is actually saying or what the viewer "wants" proved. I remember awhile back I did a side by side with an existing system. It was clear that the system I brought in was much better. There was one guy who simply did not want to have my system go in. So he tried-and tried-and tried to adjust hte house eq to get the current system to sound better-or like mine. At the end of the night he said "well it really wasn't fair-your system sounded a lot better". Somehow I THOUGHT that was the idea. But he was wanting both systems to "sound the same" yet be able to choose (from some other method that he would probably come up with) which one sounded better? OK I'm confused now. But he was just grasping for any "excuse" he could come up with. Our system ended up being installed. Sorry to rant. [/QUOTE]
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