Sound Projector Click Here to know the glossary : MSP-5200VA Metallic Sound Projector 5” Full range Rated 20W91 dBSPL (1W/1M)Aluminium MSP205020 Metallic Sound Projector 5” Full rangeRated 20W92 dBSPL (1W/1M)Aluminium MBP-5120VA Metallic Bi-Directional Projector 5” Full range x2Rated 12W91 dBSPL (1W/1M)Aluminium MBP205012 Metallic Bi-Directional Projector 5” Full range x2Rated 12W91 dBSPL (1W/1M)Aluminium SOP-5200VA Sound Projector 5” Full rangeRated 20W93 dBSPL (1W/1M)UL94V0 ABS SOP205020 Sound Projector 5” Full rangeRated 20W92 dBSPL (1W/1M)UL94V0 ABS