SSL SMC75 600-watts Full Range Class A/B 2 Channel 4 Ohm Stable Amplifier SMC75 Remote Control View larger View larger Water Resistant…But not water proof. There is a difference between the two. All of the major components of the SMC75 package such as the spider/surround for the speakers and the connections for the amplifier have been specially coated and sealed so that they have the protection that they need from the damaging effects of the elements. Features 1) Detachable amplifier 2) Weatherproof loudspeakers with cable wire harness 3) Laminated LCD display 4) Built in FM radio with electronic auto-scan tuning 5) USB interface: support USB flash memory 6) SD slot: Supports 128MB, 256MB, 512MB,1GB, 2GB, 4GB SD card 7) Automatically playing function: play the music automatically 8) when you insert USB device/SD card with Mp3 format songs 9) Remote controller 10) Mute function 11) 3.5mm stereo input plug 12) Easy installation 13) Suitable for 12V motorcycles, scooters and boats SMC75 Amplifier View larger SMC75 Amplifier (side) View larger Specifications 1) Operation Voltage - 10~16V 2) Max Power - 600W 3) THD - 50dB 5) Channel Separation - >50dB 6) Channel Balance - Amplifier/Speaker Connections View larger SMC75 Brackets View larger Amplifier/Speaker Connections 1) Be sure to run the wiring securely and far away from any moving components. 2) Connecting the power cable to the power source: you will need to connect the 12 volt red wire to a (fused 10A) switched power source. 3) Use the 3.5mm stereo jack to connect your entertainment source (MP3 Player, smartphone, etc). 4) Use your player device and your volume controller to control the desired level of loudness. Speaker Cone – Poly Injection View larger Speaker Cone – Poly Injection A substance called “Polyurethane” that is categorized as a “Polymer" is a resilient, flexible and durable manufactured material that can take the place of paint, cotton, rubber, metal or wood in thousands of applications across virtually all fields. It can be hard like fiberglass, squishy like upholstery foam, protective like varnish, bouncy like rubber or sticky like glue. In the specific case of our cones, this material allows for maximum flexibility that produces great sounding speakers lasting you a long, long time.