User's Manual 2 CHANNEL BRIDGEABLE MOSFET MARINE POWER AMPLIFIER 4 CHANNEL BRIDGEABLE MOSFET MARINE POWER AMPLIFIER
o~s --USER'S MANUAL ~ MR400.2 MR250.4 Two Channel High Power MOSFET Marine Audio Amplifier Four Channel High Power MOSFET Marine Audio Amplifier Congratulations on your purchase of a :lO~:S Marine Amplifier. oWIlX'n~ It has been designed, engineered and manufactured to bring you the highest level of performance and quality, and will afford you years of listening pleasure.
Introduction What is included? With the ~~ Marine MOSFET amplifier series, we are introducing two new amplifiers, designed specifically for marine audio installations. This new series includes a 2-channel amplifier and a 4-channel amplifier. When first unpacking your new amplifier, please check first that the package contains all of the items below. If something is missing, contact the store where you purchased the player.
General precautions Protection Circuitry Before installing and l/sing YO(1r new 3\)~ Marine amplifier, please be ~~ familiar with a'll the informa tion contained in this mal1ua/~ This amplifier incorporates special protection circuitry Which will disable the amplifier if any of the following should occur: Please keep this manual in a safe place for future reference. • Input overload • Short circuit • Do not open or attempt to repair this unit yourself.
Mounting the amplifier Connecting the amplifier 1. Find a suitable location in the marine vessel in which to mount the amplifier. Before dOing
Low Level Input Wiring High Level Input Wiring Low-level (RCA) input wiring is preferred for best audio performance, Always use a high-quality RCA cable for best audio pertormance. The high level input(s) should only be used when your head unit lacks RCA outputs, If the RCA outputs are not present, connect the speaker outputs from the receiiver to the high level input connector of the amplifier.
Power and Speaker Wiring 2-Channel Amplifier I MR400.2 Power and Speaker Wiring 2·,Chanhel Amplifie!i "'11400.2 Two Tri-mode operation allows you to connect this amplifier to a pair- of main speakers plus a sUlbwoofer on one pair of output channels. The main speakers will operate in STEREO while the subwoofer simultaneously operates In MONO. Channel Mode ttl ~ Q POW,liR Q $ To set up the amplifier to run In this mode, put the crossover switch in the FULL position.
Power and Speaker Wiring 4-Channel Amplifier h MR250.4 Power and Speaker Wiring 4-Channel Amplifier MR250.4 Tri-mode operation allows you to connect this amplifier to a pair of main speakers plus a subwoofer on one pair of output channels. The main speakers will operate in STEREO while the subwoofer simultaneously operates in MONO. To set up the amplifier to run In this mode, put the crossover switches in the FULL position.
Troubleshooting If you experience operation or perionnance problems with this product, compare your installation with the electrical wiring diagram on the previous pages. If problems persist, read the following troubleshooting tips which may help eliminate the problems. SYMPTOM Amplifier will not power up. POSSIBLE REMEDY Check to make sure you have a good ground connection. Check that the Remote Input (Tum-On) has at least 3VDC. Check that there Is battery power on the (+) terminal.
