You said :
Most nightclubs i've ever been to don't have one speaker per side, they normally either have at least two or three per side, so I figured you meant splay 90 degree cabs. I personally hate 90 degree cabs, if I had the money to choose whatever cabs I wanted i'd never use another 90 degree cab ever again but unfortunately I don't have that much money anymore so I have to go with the loudest cab I can afford, and at the moment, with the mid/highs i've got, that was 90 degree cabs. I wouldn't splay cabs with any wider horizontal dispersion than 60 degrees, and even then it'd be a maximum of two cabs per side.Originally Posted by Bill Fitzmaurice
If anything for average clubs even 90 degree dispersion isn't wide enough.
Thanks for linking to that Bill, that's interesting to see the differences. Cross firing speaker cabinets though would look very odd and actually make it look like the person doing the event doesn't know what they're doing.
Specifically, take a look at Jack Arnott and Brad Weber's posts.
Also, http://forums.prosoundweb.com/index....c,5554.20.html includes a grilling of the above article's author.
I'm not sure if I have a horse in this game (yet) - I've seen good results with an array of crossfired horns and separate low frequency elements in an install situation where there was no room to do anything else, but I'd like to buy a pair of SRX712's and actually measure in an anechoic chamber what the article is simulating, as well as do some more modeling in EASE instead of GPA.
Last edited by jayhwk; 06-12-2012 at 06:33 PM.
As for cross-firing, it's now used widely in the midrange elements of three way line arrays, with forward facing woofers outboard of cross-fired mids outboard of a central tweeter array.
Bennett Prescott says : "I don't even know where to start.
This "cross firing" technique will result in HF reflections, uneven coverage, unbalanced frequency response, and increased lobing".
Bennett Prescott is a top industry professional sound engineer, if that's what he says then I trust his word. All the top guys say bad things about cross-firing point source speaker cabs.
As far as PSW, never have I seen such a group of prima donnas. Like any internet forum, it's difficult to separate the wheat from the chaff. Guaranteed, if Tom Danley doesn't advise cross-firing cabinets, you can bet your bottom dollar nobody at PSW will think it's a good idea.
I have no idea whether it's a good idea to cross-fire cabinets or not. My belief is to get a loud enough speaker to do the job properly with one per side. If a crowd is so big I can't do it with one a side, I'm paying a professional to load, unload, set up, tune... I'm bringing a mixer, decks and mic.
Any time I've tried to array loudspeakers, horizontally or vertically, it's sounded like crud somewhere in the room. Usually where I'm standing. I'm sure there are cabinets out there that will work, but I don't want to own them, store them, carry them, load them in my vehicle, own or drive a vehicle of the size required to transport them, rent them, set them up, tune them... That's for bigger fish than me.
Bennett Prescott may be a salesman, but he's also a sound engineer matey, he's got extensive knowledge of live sound and not just in the sales area, he works for the legendary B&C company, have a look here :
Sorry Bill, but who are you to slag him off? And i'm not being horrible Bill, but maybe you don't get on with those guys because they disagree with your ideas. The guys on ProSoundWeb are industry professionals, some work for loudspeaker manufacturing companies and most are live sound engineers.