2 channel home theater passive subwoofer amplifier (8 pages)
Summary of Contents for Sanway Audio DA18K4
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3. Volume Control Adjust the output amplitude of the amplifier...
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Common knowledge: Try to use the shielded wire, the higher density shielding layer is the better. Try to select balance connection for input, to reduce noise interference. Selection of non balance connection, the shorter the better, preferably not more than 3m. The weak signal line should avoid to parallel with the power line and the power output line, otherwise it might produce noise.