User manual ELECTRO-VOICE CH230WX DATASHEET
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Manual abstract: user guide ELECTRO-VOICE CH230WXDATASHEET
Detailed instructions for use are in the User's Guide.
[. . . ] Our Classic Silver Studio has the big Neve VR with recall and Flying Faders snapshots, and that works well when you have time to reset. But if you want instant global reset, our new White Truck with a pair of Yamaha DM-2000s is the ticket. The Neve works best for projects like Neil Young's recent film, Heart of Gold, and the Yamahas for TV shoots like Jazz at Lincoln Center's Gala, where you have maybe a dozen different sets. One of my concerns over the years has been proper documentation of the media. [. . . ] Shortly after the launch of X-Line Very Compact and its 12-inch DVX-3120 wooferequipped, XS212-LF cabinet (the sub element in the XLVC line), the phone calls began: "The XS212-LF sounds incredible for its size, with tons of power. Are these speakers going to be available in the XLC medium-sized line-array format?" EV has always listened closely to its customers, and these questions became the impetus for EV's engineers to put DVX at front and center in their transducer program, the result of which was the development of a brand-new, 12-inch LF driver, the DVX-3121, and a new mid-bass driver, the DVN 6. 5-inch. Both speakers made their debut at InfoComm 2006 inside the XLC127DVX 3-way, full-bandwidth line-array element, based on the world-renowned XLC127+. The DVX-loaded XLC has all the sonic signatures that made its predecessor a favorite, but with extraordinary power handling and performance specs that surpass those on many full-sized line-array offerings. Allow me to explain some of the "sound innovations" behind the DVX concept, at the drawing board stage and beyond. Woofers, like all loudspeakers, are governed by a complex melding of disciplines: mechanical engineering, electrical engineering, physics and acoustics. The DVX line has been optimized in all of these areas using the latest technologies. First of all, the DVX magnet structure, the motor that works with the voice coil to provide the drive force to the woofer, was optimized for strength, stability, travel and linearity. Nonlinearity in a speaker's magnetic field or suspension not only leads to added distortion but also greatly impacts the life expectancy of a speaker. For example, if you have a speaker motor that is stronger when the cone is moving out of the basket than when moving in, the speaker will tend to offset itself to the outside. Since the suspension of the speaker (the surround and the spider) can only move a finite distance in either direction before being damaged, you are going to stress these components more in one direction than the other. In speaker terminology, we call that hunk of iron a "pole piece"; every speaker has one. Most people understand the problems caused by inductance at high frequencies. Engi-
Graph plotting the variation in the strength of the magnetic field in the motor gap vs. time, using a DVX motor structure and a conventional ceramic motor structure. Drive signal: 75V pk at 100 Hz.
neers take advantage of inductance all the time in crossover design. The problem with inductance in a speaker is as follows: As the cone moves outward, it moves out of the magnetic circuit and the pole piece is no longer inside as much of the coil as when the cone is moving inward. This asymmetry in the inductance also causes an offset of the speaker's center position, just like a nonlinear magnetic field or suspension. Besides negatively impacting the life expectancy of a speaker, this asymmetry causes
distortions that are particularly audible and offensive. First, we computermodeled the magnetic structure and optimized the geometry to eliminate asymmetries. The use of multidimensional
The Klippel measurement system is used to measure the symmetry of the magnetic field, the compliance of the suspension and the inductance.
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many different formats. These days that's a lot, and it's getting increasingly difficult to find a place to store a paper trail of data. [. . . ] These days that's a lot, and it's getting increasingly difficult to find a place to store a paper trail of data. Our technician, Phil Gitomer, insists on having track sheets and take sheets for every drive or disc. How many times have you had a hard drive or tape show up with no documentation?Without wasting time mounting it and playing the material, you have no idea what's there. [. . . ]
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