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Thank you for purchasing the SA70 Subwoofer Plate Amplifier. It has been designed and built to provide years of high quality sound reproduction, and is ideal for use in compact subwoofers for home stereo, home theatre, and mul- timedia audio systems. Engineering features of this amplifier include a choice of high or low level audio connections, selectable crossover frequency, auto on/off circuit activated by input signal, and comprehensive internal production against shorted speaker loads, thermal faults, and overload conditions.
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INPUT/OUTPUT CONNECTIONS 1.) Low-Level Inputs (Left/Right) RCA style jacks that will accept standard line level inputs from a pre-amp level source. They will accept a stereo signal and internally combine it into mono. (Note: Both left and right input jacks must be connected to the source in order to drive the amplifier to full output).
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NOTES ABOUT HUM: While the SA70 has been designed to minimize the possibility of hum in the subwoofer system, it is still possible that a hum will occur in rare circumstances. Its safety grounding can create a path for small amounts of 60 Hz energy to travel through the line-level audio system.
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