Hi all - looking to add a speaker(s) to a Panelview +6 1000, using the USB port and existing audio driver. I am looking for something loud (10-20 watt range) and the speaker(s) will be installed in an operator interface enclosure in a wet environment - a clean room. The speaker can be mounted externally if able to be washed-down. 120vac/24vdc is available to power the speakers if required. Thanks