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Post by Shadowk on Apr 15, 2024 15:06:51 GMT -6
Yes the boundary issue is going to effect LF, but the location of the port isn’t going to matter, your addressing it like it’s a boundary with the port, it’s not it’s the cabinet. Of course I could be wrong, but then we would have to throw out the rules every speaker designer has accepted, how LF is managed by every major touring company etc. I don't think you're incorrect. From my very limited knowledge because it's not electronics or extensively techy geeky stuff a port is nothing more than a way to release air caused by the LMF driver moving. So, teach me Jedi.. Is there some way it could be a crap design? Like a resonance caused by the baffle / pipe or something that would explain it? I was never confused until I did these tests. I mean it could have been purely circumstancial but you'd have thought the tiny speaker (8341) would cause less boundary issues than a 1.7ft long speaker right?
Oh and sorry Johnkenn for derailing, I have ordered a Trinnov Nova demo unit. I guess it's a more sensible idea than very expensive speakers, not as fun though.. |
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Post by Johnkenn on Apr 15, 2024 15:14:17 GMT -6
Yeah - tell us your truthful review after...hey - it might not be your bag...
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ericn
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Balance Engineer
Posts: 16,088 
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Post by ericn on Apr 15, 2024 15:53:18 GMT -6
Yes the boundary issue is going to effect LF, but the location of the port isn’t going to matter, your addressing it like it’s a boundary with the port, it’s not it’s the cabinet. Of course I could be wrong, but then we would have to throw out the rules every speaker designer has accepted, how LF is managed by every major touring company etc. I don't think you're incorrect. From my very limited knowledge because it's not electronics or extensively techy geeky stuff a port is nothing more than a way to release air caused by the LMF driver moving. So, teach me Jedi.. Is there some way it could be a crap design? Like a resonance caused by the baffle / pipe or something that would explain it? I was never confused until I did these tests. I mean it could have been purely circumstancial but you'd have thought the tiny speaker (8341) would cause less boundary issues than a 1.7ft long speaker right?
Oh and sorry Johnkenn for derailing, I have ordered a Trinnov Nova demo unit. I guess it's a more sensible idea than very expensive speakers, not as fun though.. Let’s take a look at the boundary issues of the smaller cabinet, if frequency response is more or less equal, yeah a smaller cabinet is going to have more positioning issues because in each plane it’s going to go Omni sooner (higher freq). Then you add in all those pesky little peaks and valleys that are natural with transducers it’s going to have even more issues. With what passes for soffit or flush mounted these days we have a pretty simple way of addressing some of these issues by turning the walls into baffles, except for the fact other than some expensive large scale speakers nobody designs speakers to be mounted with a gigantic baffle. Not even the majority of home in ceiling or wall speakers, most are either mobile products or simply an in wall variation of a free standing speaker. |
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