a/d/s/ P850, P650, P450 owner manual Signal sources, Internal signal routing, Blue, Yellow

signal sources

Due to the wide input level adjustment range, all a/d/s/ PowerPlatesTM can be driven with either a conventional preamplifier drive signal or the amplified signal from a powered source unit. This makes the PowerPlateTM perfect for upgrading an OEM (Original Equipment Manufacturer) stereo system while retaining the factory installed radio.

Because of the high impedance of the a/d/s/ input stage, the factory radio drives an easy load. This ensures lower distortion levels than if it was driving speakers or a Line Output Converter accessory. As a result, a high quality factory installed radio can deliver high quality sound which is nearly as good as the sound from a high-end aftermarket source unit. The speaker outputs of the factory radio are simply connected to a mini-DIN adapter as shown below. From this point on, the signal can be treated exactly as you would a preamp-level signal, except that the input level controls on the PowerPlateTM will be set to a lower than usual level when you make your final adjustments.

Conventional aftermarket sources may be connected using standard shielded RCA cables from the source unit’s preamp outputs to the PowerPlateTM inputs.

Note: When using 4 channels of input, be sure to configure the 2ch/4 ch input switch to 4ch input. Failure to do so may result in damage to the source unit.

High-level MiniDin input connections:

Pin	Wire Color	Connects to Head Unit
1	gray	front right +
2	violet/black	rear right -
3	white	front left +
4	gray/black	front right -
5	white/black	front left -
6	green	rear left +
7	green/black	rear left -
8	violet	rear right +

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Channels 3-8 can be accessed through the din 3-8 connector by using the optional AC202 RCA to DIN adapter.

DIN ch 3-8 connections:

pin 1	ch 6
pin 2	audio signal ground
pin 3	ch 4
pin 4	ch 5
pin 5	ch 3
pin 6	ch 8
pin 7	ch 7
pin 8	remote power control

AC202 RCA audio inputs are color-coded as follows:

white	ch 3 & 4 input
blue	ch 5 & 6 input
yellow	ch 7 & 8 input

Note: ch 1/2 input not available through the DIN.

internal signal routing

The 2-channel/4-channel input switch routes RCA input from channels 1/2 to channels 3/4. When the switch is engaged, channel 1 input is routed to both amplifier channels 1 and 3 with input channel 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 their respec - tive inputs.

Switch in the disengaged position.

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