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Mirror image line array
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<blockquote data-quote="Greg Huber" data-source="post: 97362" data-attributes="member: 4800"><p>Re: Mirror image line array</p><p></p><p></p><p></p><p>Hi again all - </p><p></p><p>The way we have been describing what we are hearing is "it seems like there are more highs house left". It can be heard when listening to both sides at the same time, or A/B-ing quickly.</p><p></p><p>I'll look at the distance to the walls later today. It's close on the second floor, and definitely not the same on the first floor. There are differences in the room per side, such as two dissimilar staircases to access the second floor. The staircase house left is my biggest suspect for reflections - the 6" MF are about 3 or 4 feet from it and that's one of the main reasons I want to flip the cabinets - to get them away from those stairs (painted steel). There is a lot of painted steel in the club, and these are W I D E cabinets...</p><p></p><p>I'm liking the suggestion of possibly using some acoustic treatment on the house left stairs to change/help the problem...</p><p></p><p>Hardware is fine; cabinets/install is a little over a year old. DSP is not the issue; we still hear the difference with touring consoles - right into the IrisNet. The analog lines to the DSP at the amp rack are fine, but I will quadruple check them for phase, impedence, and connection. In fact, I can substitute lines...I think I have done that...</p><p></p><p>I agree measurement can probably show us what we are hearing, but I'm liking the advice of a trusted colleague best so far..."Flip the ******* and see what it sounds like" - that's my style, too.</p><p></p><p>I've restacked a few PAs in my day - I remember fondly the first time I worked for Peter Yarrow. It was around 1979, I was a very young MON guy, and my boss didn't get the LF "crunchers", metal MF JBL horns with 2441/2482, and 2402 HF up high enough to begin with. I worked with Peter many more times over the years, and when the artist comes in and tells you your PA is stacked wrong, you get to restack it. Peter pays attention to those things, and he is always right. </p><p></p><p>(Art, if you're reading this - that wasn't you - it was Willie! Heeheehee!!)</p><p></p><p>Thanks - more to follow!</p></blockquote><p></p>
[QUOTE="Greg Huber, post: 97362, member: 4800"] Re: Mirror image line array Hi again all - The way we have been describing what we are hearing is "it seems like there are more highs house left". It can be heard when listening to both sides at the same time, or A/B-ing quickly. I'll look at the distance to the walls later today. It's close on the second floor, and definitely not the same on the first floor. There are differences in the room per side, such as two dissimilar staircases to access the second floor. The staircase house left is my biggest suspect for reflections - the 6" MF are about 3 or 4 feet from it and that's one of the main reasons I want to flip the cabinets - to get them away from those stairs (painted steel). There is a lot of painted steel in the club, and these are W I D E cabinets... I'm liking the suggestion of possibly using some acoustic treatment on the house left stairs to change/help the problem... Hardware is fine; cabinets/install is a little over a year old. DSP is not the issue; we still hear the difference with touring consoles - right into the IrisNet. The analog lines to the DSP at the amp rack are fine, but I will quadruple check them for phase, impedence, and connection. In fact, I can substitute lines...I think I have done that... I agree measurement can probably show us what we are hearing, but I'm liking the advice of a trusted colleague best so far..."Flip the ******* and see what it sounds like" - that's my style, too. I've restacked a few PAs in my day - I remember fondly the first time I worked for Peter Yarrow. It was around 1979, I was a very young MON guy, and my boss didn't get the LF "crunchers", metal MF JBL horns with 2441/2482, and 2402 HF up high enough to begin with. I worked with Peter many more times over the years, and when the artist comes in and tells you your PA is stacked wrong, you get to restack it. Peter pays attention to those things, and he is always right. (Art, if you're reading this - that wasn't you - it was Willie! Heeheehee!!) Thanks - more to follow! [/QUOTE]
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