(1) DS18 PRO-HY6.2MSL. DS18 PRO-HY6.2MSL 6.5" Hybrid Slim Loudspeaker with a 1" Compression Driver Horn. 6.5" Hybrid Slim Loudspeaker with a 1" Compression Driver Horn (Single Speaker). With 150 watts RMS Power Handling and 300 watts MAX Power Handling, and a frequency response of 120Hz-20KHz, this is the best Car Audio Loudspeaker you can find that is compact yet getting amazing and rich musical response.