Check the listing for details. Bose Professional Edgemax EM90 In-Ceiling Premium Loudspeaker. Color: White, Condition: New. Listed at 617.49 USD. Bose Professional EdgeMax in-ceiling premium loudspeakers - USA Authorized Dealer!Bose Professional EdgeMax in-ceiling premium loudspeakers feature proprietary Bose PhaseGuide technology with high-frequency compression drivers to create a new category that combines the room-filling coverage patterns typical of larger surface-mount speakers with the architect-preferred aesthetics of in-ceiling models. Designed to mount near wall-ceiling boundaries, EdgeMax loudspeakers provide improved audio quality and coverage, while reducing the number of required units, compared to conventional dome-tweeter ceiling speakers. Key FeaturesPhaseGuide technology – provides unique asymmetrical vertical pattern for room-filling coverage when mounting near wall-ceiling boundaryProvides improved room visual appearance – for demanding interior designs by eliminating center-of-ceiling or wall-mounted loudspeakersNominal 90° horizontal coverage – designed for in-ceiling mounting near room cornersHigh-frequency compression driver – for best-in-class audio quality with superior frequency response and coverage consistency versus typical dome tweeters8-inch woofer – with wall-boundary loading provides extended bass impact2-way passive crossover with 70/100V transformerNew auto-hold, spring-loaded mounting arms – for fast, easy installsMagnetically attached grill – for quick access to wiring and tap settingsUL1480A listing – for air-handling (plenum) space installationTechnical SpecificationsFrequency Response (+/-3 dB):50 Hz - 18 kHzFrequency Range (-10 dB):45 Hz - 20 kHzNominal Dispersion:75° Vertical / 90° HorizontalLong-Term Power Handling:125 W (500 W peak)Sensitivity (SPL / 1 W @ 1 m):96 dB SPLMaximum SPL @ 1 m:117 dB SPL (123 dB SPL peak)Transducers:1 x 8-inch woofer / 1 x compression driverNominal Impedance:8 Ω (transformer bypassed)