The Monitor Audio IV140 invisible speaker is designed to deliver ‘best in class’ audio performance in concealed in-wall and in-ceiling applications. Key Features: Low-Frequency transducer Dual High-Frequency transducer Integrated ‘hybrid’ controlled performance back box system Rigid MDF back box construction Gold-plated Sprung push-type terminals WBIV140 Pre-Construction Bracket Self-tapping screw Innovative sound solutions Concealed in-wall or in-ceiling, the speaker fits into all conventional 4" stud bays, leaving enough room for cabling. Once installed and skimmed with plaster, the speaker is completely out of sight, with paint, light wallpaper, or fabric hiding it from view. A large low-frequency transducer and two high-frequency transducers provide punchy, high-power bass and sound vibration. This two-way transducer design also features an integrated crossover to generate a wider frequency range and deliver crystal clear sound quality with smoother overall balance and character. An integrated back box design isolates sound and ensures consistent, controlled performance. This rigid back box reduces sound emitted from the rear of the speaker, minimising leakage into other rooms. Monitor Audio’s IV140 is protected against overload by automatic resetting circuit breakers (PTC). These will attenuate output for a specific time period to allow the system to cool until normal operation can safely resume. Specifications Category Details Frequency Response (-6 dB) 75 Hz — 18 kHz (CP sealed)55 Hz — 18 kHz (Open back) Sensitivity (1W@1M) 82 dB (when installed as directed) Nominal Impedance 8 ohms Maximum SPL 102.8 dBA Power Handling (RMS) 50 Watts (full range – IEC268-5 rating)100 Watts Music program (Using Minimum 80Hz High Pass filter) Recommended Amplifier Requirements 20-50 Watts (full range)20-100 Watts (Using Minimum 80 Hz High Pass filter) Drive Unit Complement 1 x Low-Frequency transducer2 x High-Frequency transducer Overall Dimensions (Including Grille - H x W x D) 642 x 401.5 mm (251/4 x 1513/16") Overall Depth 106 mm (43/16") Cut-Out Dimensions 591 x 350.5 mm (231/4 x 1313/16") Mounting Depth 94 mm (311/16") Connection Sprung push type terminals – Gold plated Fixing Type Self-tapping screw Construction Material 9 mm MDF Colour / Finish Black painted, white membrane Pre-Construction Bracket WBIV140 Pre-Construction Bracket Weight 9 kg (20 lb) Sold As Single Unit Warranty 5 years