Vivolink Audiopack is the perfect speaker bundle for office or meeting rooms.The four in-wall speakers (VLSPIW60W 2-way 40W RMS) are discrete white and can easily be mounted in the wall. It will give a clean and almost invisible installation.The active Subwoofer is fully automated and will add bass to the sound and will deliver speaker power to the wall speakers.Subwoofer is designed to be mounted over ceiling or under furnitureIdeal for meeting rooms. hotels and auditoriums.It have line input and loop out for active satellite speakers.Sub-woofer can also be used together with passive satellite speakers using the internal power amplifier for satellite speakers on 2 x 25W• For rooms up to 200m2• Power effect for sub-woofer: 50 Watts• Power effect for passive in-wall speakers:(VLSPIW60W) 4 x 40 Watt (RMS) speakers• Inputs: 100V. Balanced in and RCA line in• Bluetooth input for speaker out only (not supported for line-out)• Outputs: RCA line out and Speaker out 2x 25W• Line out for active speakers (VLSP60/65/61/70)• Frequency range: 80Hz-20kHz• Impedance: 8 Ohm