Why it's a best pick:
For a typical 5.1 Surround Sound version of the Pioneer EX System, three of the primary speakers, known as S-IW691L would deliver the left, center, right-channel information -- and each contains dual 6.5-inch woofers, with diaphragms made of a composite of carbon and aramid fibers (of all things) with a multiroll surround. The laminated cone material is described as providing resistance to the backpressure of the cabinet, which also moves any cone resonances out of the operating range of the drivers, and the multiroll surround helps linearize the cone’s movement in both directions, which offers extended high volume for long durations without distortion.
Each of the Pioneer EX Speakers contains a CST driver module consisting of a 5.5-inch concentric midrange/high-frequency driver designed around a magnesium cone for the midrange and ceramic graphite compound for the 1.2-inch tweeter diaphragm, said to have similar characteristics to beryllium at a fraction of the cost. And the concentric drivers are physically aligned with the center of each midrange element, and this design directly improves off-axis response through the use of an acoustic waveguide design. The double-position treble level control allows the tweeter response to be tailored for your precise room acoustics.
If the Pioneer CST’s objective is to achieve sonic coherence, then the result is intelligible, articulate, and congruous, sound, clarified by the rigid mounting of the driver arrays on laminated medium-density fiberboard (MDF). The woofers are tuned for the normal volume of space within an in-wall standard residential stud installation, while the midrange/tweeter array is isolated in a separate enclosure to limit any interaction with the woofers or the walls of your room. Most people will want to use a separate subwoofer with a crossover point of 80 hertz, or lower to establish a true full range system. And with the addition of two Pioneer S-4EX surround sound speakers, your 5.1 system will be complete. The S-4EX is actually just the cabinet or in-room version of the S-IW691L in-walls featured for the front channels., so it uses the same drivers and crossovers found in the S-IW691L speakers, except that the S-4EX has one woofer instead of two.
The transparency, detail, and midrange openness are clearly the result of the sonic coherence achieved through a Coherent Sound Transmission system, particularly with female vocals and also film dialogue. The subtle sonic details that usually are obscured with lesser dynamic speakers are here in perfect perspective to embrace and enjoy.
The Pioneer speakers come with white grilles that you can paint to match your room décor. But removing these and hiding the speakers behind acoustically transparent fabric will allow them to truly become invisible, both sonically and visually.
Manufacturer Description: Designed around our award winning EX floor-standing platform, the new Elite® EX Series not only redefines the entire architectural category, but also now offers an even more comprehensive solution for the most refined of audiophile tastes.
With an experience that blends seamlessly within any environment, the EX Series offers exceptional sound with all but complete invisibility.
Built with only the finest of hand picked materials, our patented Coherent Source Transducer (CST) driver technology offers every home cinema connoisseur the most enveloping and accurate “sweet spot” available today. To fully appreciate our Elite EX Series speakers, they simply must be experienced to be believed.
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The S-IW691 is designed for custom home cinema and the demands of 2 channel critical listening applications. It features a 6 1/2” woven aramid/carbon composite bass driver, a 5 1/2” magnesium midrange and a 1 3/16” ceramic graphite tweeter built into a laminated MDF baffle. Add customizable features like Treble Contour Control and exceptional sound is always at your fingertips.
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