Revox INV 80 Architectural Speaker SDR35 This achieves the lowest possible

This achieves the lowest possible noise interference and

Tweeter 1" Pinnacle Ring Radiator Mid-range/Mid-bass - Woofers 6 ½” Turbine Cone Overall Frequency Response 39Hz - 50kHz Frequency Response (-3dB limits) 51Hz - 38kHz Recommended Amplifier Power 30 - 200W Amplifier Output Compatibility 8Ω / 6Ω / 4Ω Minimum Impedance (ohms) 3

and has a long-term lifespan for any professional applications

and surges

by incorporating some great technical improvements

Revox INV 80 Architectural Speaker SDR35 This achieves the lowest possibleSounding walls through invisible speakers! The innovative surface loudspeakers of the Invisible series are only a few millimetres thick and are installed completely invisibly under plaster, paint or wallpaper, turning the wall or ceiling into a hidden sound source. The amazing listening experience: Due to the special flat radiation characteristic of the Invisible Soundboards, their impressive, harmonious sound is equally audible everywhere in the room