Power Connection (+12V): The constant power connection should be
made at the vehicle battery when possible. For direct battery
connection, a 1-amp fuse must be installed in-line with the power wire
within 18”of the battery and securely connected to the positive battery
terminal bolt with a ring terminal. If connecting to another available
co12V power source, a 1-amp in-line fuse must be added at the
connection point. The power wire should be a minimum of 18AWG. Do
not install the fuse until all other system connections have been made.
Speaker Level Input (SPK): Connect the speaker wires from the source
unit to corresponding terminals on the interface. Use the SPK input if
your source unit is not equipped with RCA outputs. Always ensure the
correct polarity of each channel when making these connections, as
failure to do so can severely effect sound performance.
Remote Input (REM IN): If a sw12V or remote trigger wire is
available, it is recommended to connect it to the REM IN terminal. If
unavailable, the linkDQ also has an auto turn-on circuit that
simultaneously detects audio signal from SPK and RCA inputs as well as
DC-offset from SPK inputs. While auto turn-on will work well in most
applications, a +12V trigger may be required for satisfactory results
under certain vehicle or system conditions. Additionally, DC-offset
and/or audio signal detect functions can be independently defeated via
the external jumpers if necessary.
Remote Output (REM OUT): Use the remote output to provide a +12V
trigger to turn on amplifiers or other aftermarket devices. This +12V
output is generated internally by the interface when turned on either by
REM IN or automatic sensing, and will provide over 500mA of continuous
current for external devices.
System Examples
Example-1: Speaker Level Input from OEM Radio
Note:
When using the factory radio to drive speakers directly and provide the
linkDQ with signal, the speakers will likely distort before reaching the radio’s
maximum volume setting. Adjust gain accordingly for optimum volume range.
5
RCA OUT
+12V
GND
REM OUT
SPK IN
linkRC
(optional)
50
