Controls, Input and Output Cables:
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dB GAIN
MIN+MAX
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The switches and gain settings are located behind a watertight pulg, which also lights up when the amplifier is on. Be sure to replace the plug when finished with adjustments
1The INPUT LEVEL switch selects the input sensitivity of the amplifier. If you are connecting to a LINE level source (typically any RCA type connection) then the switch should be in the LINE (out) position. When connecting to loudspeaker outputs or headphone or high level sources then set the switch to the SPEAKER (in) position.
2The POLARITY switch allows the user to optimize bass performance in the case that there are more than 1 set of loudspeakers producing bass in the system. Play some music with strong bass content and listen with the switch alternately in the NORMAL and REVERSE position until it can be determined which setting results in more pleasing bass response. If in doubt, or if any interaction with other speakers is unlikely, then leave the switch in the NORMAL position.
3The GAIN control adjusts the overall level of the amplifier. When using the amplifier without volume control the level should beset to achieve a balance with other loudspeakers in the system. As arule, keep the gain setting as low as possible while still insuring that thesystem will reach full output power. When using the system with external volume control, set the external Volume Control to FULL (clockwise) and adjust the gain on the amplifier until full output power is reached. Full output power level can be determined by turning the gain control clockwise until the apparent loudness does not appear to increase any more. Leave the control at the setting where this begins to become apparent.
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