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USB Connection Port
When connecting your Windows (7, 8 or 10) Laptop or Tablet computer to the processor
for tuning, please connect the included 6 foot USB cable to this port. It is recommended to
power the tuning computer from a battery source to completely eliminate the chance of a
ground loop on this connection. If you require more cable length, purchase a longer cable.
Do not use an extension. Use as short a cable as possible for maximum reliability.
TRI-ON Auto Sensing Turn-On Control Switch
The XC660DSP features an automatic turn-on circuit called TRI-ON that will activate the
processor without the need for a connection to the REM terminal. The switch has three
positions - SIG, REM and DC.
SIG - Signal Detect Mode
In this setting, the processor will monitor Channel 1 input for the presence of an audio
signal. The signal needs to be moderately loud in order for the XC660DSP to activate.
NOTE: in some applications,if a speaker is still connected to the wires on this input, the
voltage produced from speakers moving when a door is closed may be adequate to trick
the amp to turn on. This is the least desirable setting.
REM - Remote Turn-On Connection Mode
In this mode, the processor will turn on when a 12V signal is connected to the REM
terminal. This is the preferred method of turning on the XC66DSP.
DC - DC Offset Detection Mode
In this mode, the processor will monitor Channel 1 input for the DC offset voltage
produced by a BTL type amplifi er. To check for the presence of BTL, you can monitor
the DC voltage on the speaker wires of the signal source. When you turn on the source,
you should see 5-6 Volts DC (or more) on the wires. The presence of this DC voltage will
activate the XC660DSP.
Power and Control Connector
12V Power Connection
This connection must have a constant 12V power source. You can connect this to the
battery, source unit or amplifi er constant power terminals. A 1 Amp fuse should be installed
on this wire.
Ground Connection
This connection must be connected to a good audio system ground location. The ground
connection of your radio or amplifi er is recommended.
Remote Out Connection
This connection provides a 12v, 0.5 Amp output when the XC660DSP is activated. The
turn-on and turn-off delay are adjustable in the XC-Tune software
Remote Input Connection
The connection is used to turn on the XC660DSP when the Tri-On switch is in the REM
setting
Profi le 1 and Profi le 2
You can switch system presets using the Profi le 1 and Profi le 2 terminals. When neither
connection is connected, the system will use Preset 1, or whatever preset you last used
with your tuning computer connected. When a ground signal is present on the Profi le 1
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