Focal JM Lab Cache 406 in-wall speakers. two Speakers FOCAL & JMLab speakers are a true “high-end” quality in wall speaker. Using the same high performance technologies found in JMlab loudspeakers, the Caché 406 is atrue high-end two-way sealed box design. Its specially adapted 165mm Sandwich W cone woofer and Tioxid Td5 inverted dome tweeter bring a level of sound quality never before experienced with an in-wall loudspeaker. Designed for hi-fi and home cinema use, it is capable of creating a full three-dimensional image of amazing precision. Easy to install, the Caché 406 will effortlessly disappear into its surroundings. Tioxid 5 tweeter Wide dispersion inverted dome tweeter The inverted dome tweeter, which has long been a JMlab signature, remains without equal. Its unique design is based on the principle of a cone loudspeaker driver. This form makes it possible to guarantee perfect mechanical coupling of the voice coil to the center of the hyper-rigid Tioxid dome. This tweeter produces exceptional definition as well as uncompressed dynamics and very wide dispersion.The phase plug, positioned in front of the dome, further improves linearity and effictively widens the listening window for maximum enjoyment. W Cones Technical Characteristics: Finishing options: whiteCrossover frequency (Hz): 2.4 kHzThe diameter of the high-frequency emitter (mm): 25 mmDiameter midrange / woofer (mm): 165 mmResistance (Ohm): 8 ohmSensitivity (dB): 88 dBRecommended amplifier power (W): 80 WFrequency range (from - to Hz): 60 Hz - 20 kHzWeight, kg): 6.2 kgRF Emitter Technology: Tioxid 5 coatingMF / LF Emitter Technologies: Sandwich W materialBrief Description of RF Emitter: concave dome, the outer surface of which is covered with a damping coating Tioxid 5Brief Description of Mid / Low Emitter: Sandwich W diffuserLow Frequency Case: closed housingDepth x Width x Height, mm:298 x 415 x 3 mm