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In Reply to: Re: Quality PA speakers for singing posted by Jimmy on February 6, 2006 at 15:35:31:
Why not dual systems? Because you have to move them. Bi-amping is about power, not response. Why not build high build quality PA? Why not indeed. Designing high quality pro-sound speakers is what I do for a living. But as far as accurate drivers are concerned the requirement for a speaker that's flat from 20 to 20k just isn't there in pro-sound. Pro-sound speakers are about efficiency and directivity, not flat response. Response is controlled via DSPs; there isn't a single high end pro-sound speaker system that's even useable without them, and with prices for sophisticated digital loudspeaker management systems now less than $300 it's even the rare semi-pro who doesn't use one.
Follow Ups:
Bill, I am pleased to know of your skills. I suspect a new manufacture Pyle driver is not as good as some vintage JBLs. Thus, some drivers must be better than others.
In fact most vintage drivers are not in the same league as those made today. If that were so JBL would still be producing the D130. A new manufacture Pyle (which are all sourced, Pyle has no factory)wouldn't be a match for a D130, but then it wouldn't be a match for a 2226 either, let alone the drivers that JBL uses in its high end pro-sound cabinets (and doesn't sell separately).
Bill makes a very, very good point. The advantage to modern speaker assembly(and modern reconing jobs) is that the materials are not deteriorated, the adhesives and insulations are MUCH better, and there are a few new manufacturing features that all help improve today's raw driver(vented pole pieces for instance, heatsinking bullet style pieces in the dust cap area also).
As to "building high quality PA speakers", yes, certainly, build them as best you can. I've done so for twenty years, and worked for Tom Danley for a number of years as well. I know fidelity can be had in prosound, I use it every time I take my system out. It may or may not happen by building separate speaker systems as you desire-some of the most common unavoidable(with most designs)degradations in sound quality come from adding more cabinets to the setup.
I would really recommend starting out with a pair of tops, a pair of subs, make them an active system(typically a 3 to 4 way), and see how that goes-remembering to ask specific questions about good designs and components. I already recommended a good starting point for a decent speaker design earlier.Best regards,
John
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