Channels 3-8 can be accessed through the din 3-8 connector by using the optional AC202 RCAto DIN adapter for P850.2 only.DIN ch 3-8 connections:pin 1 ch 6pin 2 audio signal groundpin 3 ch 4pin 4 ch 5pin 5 ch 3pin 6 ch 8pin 7 ch 7pin 8 remote power controlAC202 RCA audio inputs are color-coded as follows:white ch 3 & 4 inputblue ch 5 & 6 inputyellow ch 7 & 8 inputNote: ch 1/2 input not available through the DIN.internal signal routing2-channel/4-channel input switch - routes RCA input from channels 1/2 to channels 3/4.When the switch is engaged, channel 1 input isrouted to both amplifier channels 1 and 3 with inputchannel 2 routed to amplifier channels 2 and 4.Switch in the engaged position.When the switch is disengaged, channels 1, 2, 3,and 4 receive signal individually from theirrespective inputs.Switch in the disengaged position.14