Can be used as horns, radio replacements, and also suitable for soldering 1.5inch type combined paper cones PU side configuration, powerful bass, clear and stable high frequency Strong double, neodymium iron, full power, naturally sound, high volumed suitable for horns, light horns Two mounted small auditory horns, auditory horns subwoofer horns, great for radio, multimedia horns 2pcs 4Ohm 3W 40mm diameter full-ranged auditory horns subwoofer horns