• Document: DX1400, DX700, DX350
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DX1400, DX700, DX350 Class D Subwoofer Amplifiers One of the hardest problems to overcome in a high power car stereo system is providing the tremendous amount of current necessary to feed high power amplifiers. This is especially critical in subwoofer amplification. Stillwater Designs engineers have met this challenge with the new DX-Series amplifiers. Thanks to Class D circuitry, the average current draw is much lower than with the conventional amplifier designs. Your new KICKER mono block subwoofer amplifier creates the massive power you need for optimal subwoofer performance with much less demand on your vehicle's charging system than with a conventional amplifier. It also provides a full complement of features you need for ultimate control of your subwoofer system. FEATURES & CONTROLS • Class D switching amplifier for maximum efficiency • 18dB per octave low pass output filter for better noise rejection • Maximum power at 2 Ohms on the DX700 and DX350, 1 Ohm on the DX1400 • Fully regulated power supply for rated output in real-world conditions • Four-layer printed circuit boards for high current capabilities (DX700 and DX1400) • Superior output circuit magnetics for better noise rejection • 24dB per octave switchable subsonic filter @ 25Hz, • Built-in remote gain control circuitry - under-dash remote gain controller included • SWX two-way active electronic crossover module in Module Docking Port • Protection circuitry - short circuit protection, reverse polarity protection, over voltage protection, thermal protection • Silent turn on/off circuitry eliminates speaker damaging “thump”  WIRING INSTRUCTIONS WARNING- Shock Hazard: This series of Class D amplifiers has high voltage DC present on the speaker terminals any time the amplifier is turned on. Avoid contact with the speaker connectors and wiring while the system is operational. IMPORTANT SAFETY NOTES: Never make any wiring connections with power applied to the system. The risk of damage to components is very high. All power and speaker connectors will accept up to 8 gauge wire with these exceptions: DX700 and the DX1400 power and ground connections are designed for 4 gauge. Although the average current draw on the Class D amplifier is lower, the peak demand is about the same as for a conventional amplifier. It is very important that the screws in the amplifier's terminal strips are very tight. An allen wrench is included for this purpose. Always make the ground connection first when installing this amplifier and disconnect ground last when removing it from the system. Connect the ground wire, which is 24 inches or less, to a structural chassis member. Be sure the connection is to bare metal and securely screwed or bolted. (It is not recommended to run the ground wire to the battery). Check the factory ground wire at the battery. Besides the large wire going to the engine block, there should be a smaller wire going from the battery negative to the body of the vehicle. If this wire is smaller than the recommended power wires shown below, then this ground wire needs to be enlarged. Run a positive wire of the size shown below directly to the positive terminal of the battery and use a fuse of appropriate size within 18 inches of the battery. This fuse protects the wire run from the battery. Please refer to wire gauge selection chart below for minimal loss at full rated power under test conditions: Model Up to 10 feet 10-20 feet DX1400 2ga. 0ga. DX700 4ga. 2ga. DX350 8ga. 4ga. Inline fuse values (used at the battery): DX1400 = 150A (supplied with amp). DX700 = 90A DX350 = 50A When running the signal (RCA) cables, keep them away from all power wires in the vehicle to avoid noise. If a signal cable must cross power wires, try to make the junction at 90 degrees. This will have the least chance of picking up noise. Note: In the case where the recommended wire size is larger than the amplifier's connector, it may be necessary to use a power distribution block or inline connector to adapt down to the size your amp will accept. 2 MOUNTING INSTRUCTIONS The orientation of the amplifier is critical to proper cooling. The cooling fins are designed to operate best when the amp is in a vertical position or mounted flat with the fins up. It is important to keep the chassis of the amplifier isolated from the metal of the vehicle because the heatsink is connected to signal ground for noise isolation. Grounding the heatsink will cause a ground loop. The plastic inserts in the mounting feet of the amp should remain in place as isolators. These inserts are designed to accept #8 screws for mounting. #8 Mounting VERTICAL #8 Mo

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