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signal sources
Due to the wide input level adjustment range, all a/d/s/ PowerPlates
TM
can be driven with either a
conventional preamplifier drive signal or the amplified signal from a powered source unit. This
makes the PowerPlate
TM
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 PowerPlate
TM
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 PowerPlate
TM
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 +
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.