Amazon.com: PRV AUDIO 1" Screw On Horn Driver WG230Ti 60 Watts Program Power, 8 Ohms, 105dB, 30 Watts RMS Titanium Diaphragm Compression Driver and Horn Combo : Musical Instruments
Amazon.com: PRV AUDIO WG270Ph Horn Driver - 1" Exit Phenolic Compression Driver 150 Watts Max Power 8 Ohm 106.5 dB 75 Watts RMS with Compact 60° x 60° Exponential Horn for Car Audio : Electronics
Amazon.com : 5 CORE Megaphone Bull Horn 30W Loud Speaker 800 Yards Range Rechargeable Portable USB Bullhorn w Recording Volume Control Siren Noise Maker for Kids and Adults for Cheerleading Football Safety
Amazon.com: TIC BA10 30W Indoor/Outdoor Horn PA Speaker with 70v Switch : Electronics