· At the installation sites, locate and make a note of all fuel lines, hydraulic brake lines, vacuum lines and electrical wiring. Use extreme caution when cutting or drilling in and around these areas. · Choose a safe mounting location away from moisture. · Make sure there is sufficient air circulation at the mounting location for the amplifier to cool itself. · Mount the amplifier, using the supplied hardware. Specifications · 225W RMS x 1 channel @ 4 ohms and <1% THD + N* · 360W RMS x 1 channel @ 2 ohms, 14. 4V supply and <1% THD + N* · Frequency response: 20Hz ­ 330Hz (­3dB) · Maximum input signal: 6V* · Maximum sensitivity: 100mV* · THD + N: 0. 04% · Signal-to-noise ratio: 85dBA (reference 1W into 4 ohms)* · Signal-to-noise ratio: 104dBA (reference rated power into 4 ohms) * CEA-2006A-compliant Speaker Output Connectors · Connect the subwoofer to these terminals, observing proper polarity. Either + or ­ terminal may be used. Minimum total impedance is 2 ohms. Fuses · Replace only with the same type and rating. Power Input Connectors · +12V: Connect to the positive terminal of the vehicle's battery. 8 AWG wire is recommended. Install an appropriate fuse holder and fuse (60A minimum) within 18 inches of the battery. Make sure the wire is not damaged or pinched during installation. Install protective grommets when routing wires through the firewall or other sheet metal. · GND: Connect to the vehicle's chassis. Refer to the picture below...