JBL_PRX_Series_Powered_Speaker_Input_Board_Schematics电路图.pdf

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1、7 5 + 6 - 7 5 + 6 - 7 5 + 6 - 8 1 4 3 + 2 - 8 1 4 3 + 2 - 8 1 4 3 + 2 - 8 1 4 3 + 2 - 7 5 + 6 - 2 3 4 5 6 1 7 8 9 10 11 12 13 14 15 16 17 18 19 20 J10 AMP CON Thru Outputs Configuration Amplifier DSP Channels DSP Channels to J10 Pins FR1 LF, HF 1, 2 Ch1 to 2&3, Ch2 to 8&9, Ch3 to 5&6 FR2 LF, MF, HF

2、3, 2, 1 Ch3 to 2&3, Ch2 to 5&6, Ch1 to 8&9 SW1 LF 1 Ch1 to 2&3, Ch2 to 8&9, Ch3 to 5&6 - Amplifier to J10 Pins LF to 2&3, MF to 5&6, HF to 8&9 RadioFans.CN 收音机爱 好者资料库 8 1 4 3 + 2 - D2 D1 7 5 + 6 - 8 1 4 3 + 2 - 7 5 + 6 - 8 1 4 3 + 2 - 8 1 4 3 + 2 - Clip LED (Yellow) 7 5 + 6 - 7 5 + 6 - From DSP Sign

3、al present LED (Green) To Connector High gain (244), BW=1Khz with output offset approx +1V This is a comparator configuration. Monitors the ADC input (CLPADC) and when near saturation (+/- 1.20V pk) outputs a square wave The threshold is set by the resistor network at the (+) input RadioFans.CN 收音机爱 好者资料库 From Audio Input To DSP From CPU Short Pins 1&2 , 3&4 RadioFans.CN 收音机爱 好者资料库 To Relays To AMPLIFIER To ADC To DSP From CPU To Analog Outputs From ADC