Re: tall skinny speakers
As a listener/member of the public, I've come to the conclusion that installers have ears that do not listen on an artistic or aesthetic level. If the rig doesn't feed back with an open mic at the contract-specified SPL, it's good to go. Sometimes they fail at that criteria, too, and customers sign the acceptance form anyway. I'm in the process of designing a replacement system for such an install right now.
And I have heard all sorts of "excuses" from installers and consultants whose systems don't perform.
They start blaming the acoustics of the room and anything they can come up with so to baffle the customer.
We had a LARGE local church in which there was a "no expense spared" system (from the largest manufacturers names in the business) that was installed and the coverage was HORRIBLE.
The contractor (who shall remain nameless-but we have redone a number of their jobs-same issues) told the Church that THEY had to understand that the budget was cut at the last minute so they could not guarantee performance.
SO EXACTLY WHAT WAS CUT for the budget?
They reused the playback gear and wireless mics.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Since when does a wireless mic affect the coverage pattern of the speaker system????????????????????????????????
But to the Church it made sense-"Yeah we cut the budget so we need to live with that"
So they brought in the loudspeaker manufacturer to measure the room and give an evaluation.
They said the room was +/- 4dB. I said BULL CRAP!!!!!!!!!!!!! I have measure it and found 25dB huge variations. So I wanted to see the data.
Heck you could walk from 1 end of the 56 channel console to the other and hear 4 very different "sounds". :O
So I got a hold of the "report". Nice and fancy. The had a graph that something like 100 seats on the horizontal axis and SPL on the vertical axis.
Yes on THAT graph it only varied +/-4dB.
HOWEVER!!!!!!!!!!!!!! they were just showing total SPL. When you actually MEASURED the system you would easily see that 120Hz was something like 18dB higher than the "average" rest of the freq.
So all they were measuring was a loud freq-that is pretty easy to get even in a large space.
THAT IS WORTHLESS.
Any way we go the go ahead to seed what we could do to the system-as long as all it costs was labor-no gear.
So we dropped the entire system (mains-fills-delays) and rehung them the way I wanted. We gave the Church back $40,000 worth of speakers because they were just causing problems.
Previous to our "redo" the church was getting several hundred WRITTEN complaints about the sound every week. After the redo the complaints went to ZERO.
I was still not as happy as I would like with the coverage-but we were stuck using the existing speakers and general locations and DSP.
In this case (and many others) it goes to show that simply using "the best there is" and using it wrong will end up with poor results.
Sorry to rant-but this type of thing happens ALL THE TIME-at some VERY high levels in our industry.
People just "making it up as they go" and finding excuses for their own lack of skill/knowledge.
And in this case SHAME SHAME on the manufacturer as well-since they came up with a story to try to support their local "golden boy" who sell lots of their gear.
They did not want to make the contractor look bad-so they came up with "something" they thought they could fool the customer so they would not believe what they were actually hearing-----------------------------------