There is not an easy solution here, being a higher wattage number doesn't essentially equivalent good sound quality, but it does decide how loud your speaker can go. Basically, you'll be wanting a speaker that's going to have the ability to fill your supposed House with a good amount https://www.bluetoothspeaker.top/factory-new-product-rechargeable-outdoor-karaoke-bluetooth-speaker-with-wireless-microphones/