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Are Speaker Manufacturers just "optimistic" ?

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_djk_ View Drop Down
Old Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote _djk_ Quote  Post ReplyReply Direct Link To This Post Posted: 12 August 2017 at 10:34pm
djk
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Hemisphere View Drop Down
Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Hemisphere Quote  Post ReplyReply Direct Link To This Post Posted: 12 August 2017 at 11:00pm
I think that's just to help reinforce the branding with crack addict stereo thieves. 'Kraco! Guaranteed to pawn for at least the price of your next rock!'
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MattStolton View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MattStolton Quote  Post ReplyReply Direct Link To This Post Posted: 14 August 2017 at 5:59pm
Even if there was a series of "independent" test houses, deemed to be virtuous and proper, eventually, after working for a manufacturer for a few years, they would get a phone call from manufacturer's marketing dept.:

"Hi Bob. These test results. Look a bit weak. Any danger of just improving them a bit. If you do, I will carry on sending my stuff to you, and paying your invoices. If not, A.N. Other test house has said they will test my stuff for 10% less than you charge, and report back the specs I want...."

There already are test centres for BS5839pt8/EN54-24 compliance. So if your Penton or Toa, and you want to certify your speaker as VA compliant (which is mostly physical, i.e. thermal fuse, ceramic connector block, etc) you can, but they also give enough acoustic data to give meaningful EASE type data. So it does exist, but costs a fortune.

When doing VA, generally part of the contract talks about meeting 0.5 or 0.6 or higher RASTI or STI, if the client reckons it sounds crap, you get someone in to test system to get a test measurement, and if you fail, you pay for testing, and doing whatever it takes to meet STI, and subsequent remeasure! So accurate speaker data, in the 100V line VA market is already standard, for EN54 compliant systems.

But, and it is a big but (and I cannot lie...) VA is life critical. And the systems are big and expensive. So BS is not accepted. Sticking a couple of Eons on sticks is not life critical. So the BS that all other manufacturers spout is marketing "re-interpretation" of measurements to help shift boxes.

Thankfully, good manufacturers will balance marketing BS with risk to reputation. Most multi $XXXXX boxes/systems will come with some sort of modelling data, and easy enough to measure result. If the two don't match up, someone pays. At the arse end of the market, what DJ is going to measure his boxes output in any meaningful way, against claim by manufacturers - they will either be loud enough or not. So manufacturers get away with it, especially to those who see big numbers (PMPO, Peak SPL or whatever) and hand over money accordingly.

The problem is, most get away with it, as we don't measure, and we suffer a touch of Emporer's new clothes syndrome.
Matt Stolton - Technical Director (!!!) - Wilding Sound Ltd
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Racks&Stacks View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Racks&Stacks Quote  Post ReplyReply Direct Link To This Post Posted: 14 August 2017 at 6:25pm
Originally posted by MattStolton MattStolton wrote:

Even if there was a series of "independent" test houses, deemed to be virtuous and proper, eventually, after working for a manufacturer for a few years, they would get a phone call from manufacturer's marketing dept.:

The problem is, most get away with it, as we don't measure, and we suffer a touch of Emporer's new clothes syndrome.

Pat Brown in the US is at least one of the credible speaker testers.  If he or any other were to be willing to fudge the results so that some company with money to throw around would get better results, his client list would soon shrink when it would be realized that they are wasting their time with him.  Production Partner is at least one trade magazine which publishes their own test results of various products, sometimes deviating quite a bit from manufacturers claimed specs

Some brands get away with it, because their name alone is enough to win a bid, or because they almost give away systems to certain operators and those towards the bottom of the market want to compete and get the same caliber of acts to play on them
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Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Hemisphere Quote  Post ReplyReply Direct Link To This Post Posted: 14 August 2017 at 6:34pm
Quote Sticking a couple of Eons on sticks is not life critical
If you expect a couple of Eons to be on sticks and there aren't any then it's pretty damn close though.
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