Pioneer GM-6500F Owner's Manual - Page 4

Section 02 Setting the unit What's what Front side Rear side To adjust the switch, use a flathead screwdriver if needed. 1 LPF (low-pass filter)/HPF (high-pass filter) select switch Switch the settings based on the connected speaker. ! When the Subwoofer is connected: Select LPF. This eliminates high range frequency and outputs low range frequency. ! When the full range speaker is connected: Select HPF or OFF. HPF eliminates low range frequency and output high range frequency. OFF outputs the entire frequency range. 2 GAIN (gain) control Adjusting gain controls CHANNEL A (channel A) and CHANNEL B (channel B) helps align the car stereo output to the Pioneer amplifier. Default setting is the NORMAL position. If output remains low, even when the car stereo volume is turned up, turn controls to lower level. If distortion occurs when the car stereo volume is turned up, turn these controls to higher level. ! If using only one input plug, set the gain controls for speaker outputs A and B to the same position. ! For use with an RCA equipped car stereo (standard output of 500 mV), set to the NORMAL position. For use with an RCA equipped Pioneer car stereo, with max. output of 4 V or more, adjust level to match that of the car stereo output. 3 INPUT SELECT (input select) switch Select 2CH for two-channel input and 4CH for four-channel input. ! You can select input select only for connections when using the RCA input jack. For connections when using the speaker input wire, 4CH will be used automatically no matter which switch setting is selected. 4 FREQ (cut off frequency) control Cut off frequency selectable from 40 Hz to 500 Hz if the LPF/HPF select switch is set to LPF or HPF. ! You can select cut off frequency only for CHANNEL B. 5 Power indicator The power indicator lights up to indicate power ON. Setting gain properly ! Protective function included to prevent malfunction of the unit and/or speakers due to excessive output, improper use or improper connection. ! When outputting high volume sound etc., this function cuts off the output for a few seconds as a normal function, but output is restored when the volume of the head unit is turned down. ! A cut in sound output may indicate improper setting of the gain control. To ensure continuous sound output with the head unit at a high volume, set amplifier gain control to a level appropriate for the preout maximum output level of the head unit, so that volume can remain unchanged and to control excess output. 4 En