Hi All, My local community likes to host an haunted house event every year but I was wondering if you professionals had any advice regarding infrasonic products? I wish to have something portable, capability of low frequency/infrasound and can be felt throughout a whole house. My aim is to naturally induce fear and anxiety. Something with a microphone to project audio as well, would be fantastic for our haunted house. I am thinking about trying a Acoustic Hailing Device 100W High Intensity Portable Active Acoustic speaker - https://m.alibaba.com/product/62405...24dbf15d4f799c2e8d5da0b7b860F.jpg_220x220.jpg Any recommendations? Any advice would be greatly appreciated.