Technology Showcase: Ceiling Loudspeakers
Dec 1, 2008 12:00 PM, By Bennett Liles
New features offer better control over positioning and environmental challenges.
Phoenix Gold, a division of Rodin, offers the ATC8DM for in-ceiling summed stereo or single-channel operation. The unit features an 8in. polypropylene woofer with a butyl-rubber surround and dual 19mm parachute silk-domed tweeters and dual voice coils. These deliver an overall frequency response of 38Hz to 28kHz at an internal impedance of 8Ω with a power-handling capacity of 15W to 150W. The dog-leg mounting system allows easy mounting and the spray-paintable frame and grille enable precise color-matching.
The SP-M8TT from Russound represents a top-end model in the company's Advantage line and is a two-way system featuring a woofer with an 8in. woven glass-fiber cone and a rubber surround. Together with the 25mm silk-dome tweeter with neodymium magnet, these components provide a frequency response of 40Hz to 20kHz ±3dB, internal 8Ω impedance, an efficiency (sensitivity) of 90dB, and recommended power handling of up to 200W. The unit also offers a 15-degree twist-and-tilt mount and 3dB high-frequency boost switch.
SoundTube offers the CM890i 8in. high-power coaxial in-ceiling loudspeaker with rapid installation features including the SpeedWing mounting system, separate low-profile grille and magnetic bezel, and speed tap power settings, all for easy installation. The power taps include 25V, 70.7V, and 100V along with 8Ω direct. Protective functions include an automatic reset for high-frequency driver protection. An 8in. woofer and 1in. compression driver provide a frequency response of 77Hz to 20Khz (-3dB), a sensitivity of 95dB, and an RMS power capacity of 125W.
The SP30PT from Speco Technologies is a unique design for special mounting situations. The unit is a hanging pendant loudspeaker that swings free of the ceiling and delivers 30W RMS and 60W peak power with a frequency response of 95Hz to 20kHz. There is also an internal transformer with a 70V/100V system selector switch with 10 settings, including 8Ω. The sensitivity figure is 92dB ±2dB, and the whole unit — including 5in. woofer and 1/2in. tweeter — weighs only 5lbs.
The CMS801 DC ceiling loudspeaker from Tannoy is designed to work with 70V and 100V systems, and it provides a number of different power taps. It features an 8in. Tannoy Dual Concentric that includes a multifiber paper-pulp mid-bass cone and a 1in. ferrofluid-cooled titanium-dome HF unit with a neodymium magnet system. These produce a frequency response of 47Hz to 30kHz ±3dB, a sensitivity of 92dB, and a nominal conical coverage angle of 90 degrees. The loudspeaker is available with or without an integral backcan for a variety of installation options.
The PowerPoint 1.2 in-ceiling loudspeaker from Thiel Audio is housed in a distinctive aluminum cabinet with a sloped front to provide directivity. The unit's combination of coplanar/coaxial 6.5in. woofer and 90-degree radiation pattern provide wide room coverage. The woofer and 1in. dome tweeter use Thiel's short-coil/long-gap motor system for low distortion and optimum tonal response. The frequency response is 75Hz to 20kHz ±3dB, sensitivity is 89dB, and the nominal internal impedance is 4Ω.
Valcom's 8in. Model V-1220C is an amplified loudspeaker with a frequency response of 80Hz to 10kHz with a 5oz. ceramic magnet and a signal-to-noise ratio of -70dB. The amplifier module has a distortion figure of less than 1.5 percent at the rated output of 1W RMS; it operates on a -24VDC positive-ground power supply with an operating current of 50mA. The two inputs have separate volume controls. One is a screwdriver-adjustable knob at the center of the grille, and the other is located on the back of the loudspeaker. The unit uses standard Cat-3, Cat-5, or Cat-6 cable.
The NS-IW560C from Yamaha contains an 8in. Kevlar-cone woofer, a swiveling 1in. titanium-dome tweeter, and gold-plated push-type loudspeaker terminals. With a 150W maximum-input signal-level capability, the loudspeaker has a 45Hz-to-28kHz frequency response, a sensitivity of 88dB, and 8Ω nominal impedance. The large power-handling capability is packed into a unit that weighs only 4.5lbs. It also features a high-quality crossover network designed to minimize distortion. The NS-IW560C comes with a paintable grille and frame along with a cutout template and paint-protective cover.
Yorkville Sound offers the Coliseum C165W ceiling loudspeaker with a program power-handling capacity of 65W, 100Hz-to-20kHz frequency response, and a sensitivity of 92dB. Designed for club or restaurant environments, the C165W has four power taps at each of the 70V and 100V system configurations. The unit has aluminum and ABS plastic construction and features screw terminals for connection.
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