Dayton Audio HDN-8 Weatherproof Sound Exciter Transducer 40Hz – 12KHz 50 Watts
Buy it Now = One, I currently have 4 in stock. Please enter quantity before purchasing. Create high quality hidden sound in walls, ceilings, floors or furniture. Great invisible sound. 50 Watts RMS / 100 watts peak at 8 ohms. Free Shipping