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Pro Audio
Junior Varsity
Heavy speakers, to fly or use a tripod?
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<blockquote data-quote="Paul Johnson" data-source="post: 217493" data-attributes="member: 2643"><p>The thing to remember about flying anything is that it’s a simple job for a manufacturer to put in a top hat mount. Pennies on the price. If they don’t, there’s a reason. Here, the solution works. The question is how strong is it? We’ve all done home brew adaptions. It comes down to liability in an accident, which is your own, for doing the design yourself. The weight of the speaker vs the ability of the filets on the welds in the smaller bracket. The bolt ‘pull-through’ force on the wood needs thought too. Without washers, you have what? Maybe 3mm of edge timber on the hole? Might be sufficient, but what is your conclusion as to the most likely failure reason? Vertical force probably is taken care of with what has been done. How about in a fire, when people will push past to get to an exit? What if they catch the cable? Will substantial side force applied from wherever the speakons are provide a moment that will exceed the timber’s ability to resist the pull through force? Would a metal top plate provide more strength than wood? I like to reduce this down to Judge Judy bite size questions. “How did you know it was safe?” Your answer sets the blame.</p><p></p><p>I suppose it boils down to our own ability to accept the risk. I’ve got some substantial 6m wind ups. Every time I put a couple of 40lb boxes on them and turn that handle I have to stop turning at some point, and it’s always below the maximum. It’s the point my knowledge, experience and courage say enough. That would fail the judge Judy test. Experience is not proof of safety. Nowadays being a manager means accepting responsibility. I’d be able to use these brackets and make my decision on height. I’d probably add big washers, that’s all. Looking inside speaker cabs with proper mounting Points often reveals very simple mechanics, that they determined were acceptable. The key feature is THEY decided. Can you imagine the designer of d&b being asked by Judge Judy why they didn’t fit a top hat? Their answer would kill your case. Nowadays, you do a risk assessment, and stand by your opinion.</p><p></p><p>I’ve done this kind of thing, and that feeling you get when your perhaps a little too tall speaker on a stand suddenly gets surrounded by lots of drunken women dancing at an Abba tribute is a really horrible lump in the throat moment. That’s when the Judge Judy stare pops into your head.</p></blockquote><p></p>
[QUOTE="Paul Johnson, post: 217493, member: 2643"] The thing to remember about flying anything is that it’s a simple job for a manufacturer to put in a top hat mount. Pennies on the price. If they don’t, there’s a reason. Here, the solution works. The question is how strong is it? We’ve all done home brew adaptions. It comes down to liability in an accident, which is your own, for doing the design yourself. The weight of the speaker vs the ability of the filets on the welds in the smaller bracket. The bolt ‘pull-through’ force on the wood needs thought too. Without washers, you have what? Maybe 3mm of edge timber on the hole? Might be sufficient, but what is your conclusion as to the most likely failure reason? Vertical force probably is taken care of with what has been done. How about in a fire, when people will push past to get to an exit? What if they catch the cable? Will substantial side force applied from wherever the speakons are provide a moment that will exceed the timber’s ability to resist the pull through force? Would a metal top plate provide more strength than wood? I like to reduce this down to Judge Judy bite size questions. “How did you know it was safe?” Your answer sets the blame. I suppose it boils down to our own ability to accept the risk. I’ve got some substantial 6m wind ups. Every time I put a couple of 40lb boxes on them and turn that handle I have to stop turning at some point, and it’s always below the maximum. It’s the point my knowledge, experience and courage say enough. That would fail the judge Judy test. Experience is not proof of safety. Nowadays being a manager means accepting responsibility. I’d be able to use these brackets and make my decision on height. I’d probably add big washers, that’s all. Looking inside speaker cabs with proper mounting Points often reveals very simple mechanics, that they determined were acceptable. The key feature is THEY decided. Can you imagine the designer of d&b being asked by Judge Judy why they didn’t fit a top hat? Their answer would kill your case. Nowadays, you do a risk assessment, and stand by your opinion. I’ve done this kind of thing, and that feeling you get when your perhaps a little too tall speaker on a stand suddenly gets surrounded by lots of drunken women dancing at an Abba tribute is a really horrible lump in the throat moment. That’s when the Judge Judy stare pops into your head. [/QUOTE]
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Heavy speakers, to fly or use a tripod?
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