Alpine S2-A55V Owners Manual - Page 12
Mid Bass EQ Adjustment Knob S2-A36F only
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Crossover Frequency Adjustment Knob (LP FILTER) (S2-A55V only) Use this control to adjust the crossover frequency between 50 Hz to 400 Hz. Bass EQ Adjustment Knob (S2-A55V only) Add a 50 Hz bass boost up to +12 dB to tune your bass response. Crossover Mode Selector Switch (S2-A36F only) a) Set to the "OFF" position when the amplifier will be used for driving full range speakers or when using an external electronic crossover. The full frequency bandwidth will be output to the speakers with no high or low frequency attenuation. b) Set to the "HP" position when the amplifier is used to drive a tweeter/ midrange system. The frequencies below the crossover point will be attenuated at 12 dB/octave. NOTE: • In this case the maximum Bass EQ boost level is reduced. c) Set to the "LP" position when the amplifier is used to drive a subwoofer. The frequencies above the crossover point will be attenuated at 12 dB/octave. Crossover Frequency Adjustment Knob (S2-A36F only) Use this control to adjust the crossover frequency between 50 Hz to 400 Hz. Mid Bass EQ Adjustment Knob (S2-A36F only) Add a 100 Hz bass boost up to +12 dB to tune your bass response. Input Channel Selector Switch (CH-3/4) (S2-A55V only) a) This switch setting is for selecting either 2-channel or 4-channel input mode. When set to "1/2", signal will be copied from CH-1/2 and sent to CH-3/4, eliminating the need for Y-adapters. b) Setting this switch to "3/4" will keep both inputs, CH-1/2 and CH-3/4 independent. A 4-channel source is required for this mode. 10-EN Crossover Frequency Adjustment Knob (HP FILTER) (S2-A55V only) Use this control to adjust the crossover frequency between 50 Hz to 400 Hz. Input Channel Selector Switch (SUB) (S2-A55V only) a) When this switch is placed in the "1+2+3+4" position, all the signals are mixed and come out from the subwoofer. This setting provides signal to the subwoofer channel when only 4 channel input is available. b) Setting this switch to "SUB" will send the signal at the inputs of SUB to subwoofer of the S2-A55V.