pos
05-20-2011, 03:33 PM
I came across this interesting picture while reading a report on last AES (http://www.positive-feedback.com/Issue52/aes.htm)
51381
That white horn furiously looks like the horn from the S4600 or 4429 (it is a two part assembly, with the throat section in black, on the right of the table)
Here is the description:
On the show floor, Globe Plastics was there, along with their partner, Bulk Molding Compounds, Inc. These guys specialize in injection molding parts using molding compounds that are a mix of polyester resin and fibreglass. You've seen this material all over in things like circuit breakers and auto parts, but because it's a nonuniform material it's pretty nonresonant, and that's great for horns, phasing plugs, and all kinds of speaker components. They had a wide variety of custom injected horn designs on display that they'd made for customers. Incidentally this stuff is also machineable so you can take a standard design and alter it for prototyping purposes.
"a mix of polyester resin and fibreglass", "nonresonant", would not that describe... sonoglass?
And look at their website:
http://www.globecomposites.com/
51382
:eek:
And it appears they actually work with JBL (http://www.globecomposites.com/ProSound.htm), so these must be the real thing!
:hmm:
51381
That white horn furiously looks like the horn from the S4600 or 4429 (it is a two part assembly, with the throat section in black, on the right of the table)
Here is the description:
On the show floor, Globe Plastics was there, along with their partner, Bulk Molding Compounds, Inc. These guys specialize in injection molding parts using molding compounds that are a mix of polyester resin and fibreglass. You've seen this material all over in things like circuit breakers and auto parts, but because it's a nonuniform material it's pretty nonresonant, and that's great for horns, phasing plugs, and all kinds of speaker components. They had a wide variety of custom injected horn designs on display that they'd made for customers. Incidentally this stuff is also machineable so you can take a standard design and alter it for prototyping purposes.
"a mix of polyester resin and fibreglass", "nonresonant", would not that describe... sonoglass?
And look at their website:
http://www.globecomposites.com/
51382
:eek:
And it appears they actually work with JBL (http://www.globecomposites.com/ProSound.htm), so these must be the real thing!
:hmm: