Wavtech LINK4 Owner's Manual page 3

Introduction
Welcome to Wāvtech, exceptional mobile audio integration products for audiophiles. Our products are
engineered to provide a truly remarkable listening experience. Built for the professional installer, our
OEM integration and signal processor models are simply the best solution available for unlimited sound
system upgrades while retaining the factory receiver.
Features
4-Channel Line Output Converter
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4-Channel Summing Processor
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Multi-Function Remote (patent pending)
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Master Volume Control
AUX Volume Control
Independent CH3/4 Level
Source/Function Select
AUX 3.5mm Input
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Differential Balanced Inputs
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Low Impedance Outputs
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Connections & Functions
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Power Indicator: This red LED indicates when the link4 is powered on. Once illuminated, there will be a
short delay before audio signal output is enabled. During initial power connection, the LED may
illuminate for a brief period.
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Ground Jumper: For selecting between chassis, isolation or 200Ω for the internal audio signal ground.
Chassis ground is the default setting and is ideal for most applications due to the differential input
stage. In the rare case there is system noise present after all other installation countermeasures,
changing this jumper to ISO or 200Ω may reduce or eliminate the noise.
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Power Supply Terminal: For +12V battery, chassis ground, remote input and remote output wire
connections. A minimum of 18AWG wire is recommended for power and ground connections. Always
protect the +12V power wire with a 1-amp fuse.
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Speaker Level Input Terminals: For up to four channels of speaker level (a.k.a. high level) input
connections to the source. Input signals ranging from 2Vrms to 20Vrms will produce up to 10Vrms RCA
output from maximum to minimum gain. For factory amplifiers with more than 20Vrms signal or if the
link4's output is too high for the connected aftermarket amplifier(s) with all gains set at minimum,
internal jumpers (labeled 20V/40V) are available to reduce the input sensitivity range by half (-6dB) for
4Vrms up to 40Vrms.
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Auxiliary Input Jack: This 3.5mm stereo AUX input is for the connection of a portable device such as a
smartphone or MP3 player, but may also be used for other low level (a.k.a line level) sources using a
3.5mm adapter. AUX may be selected as a separate source via the multi-function remote, or
programmed as the primary source for stand-alone systems where the speaker level inputs are not
used (see pg4). Input signals ranging from 0.5Vrms to 5Vrms will produce up to 10Vrms RCA output
from maximum to minimum gain. This input is differential but may be set to unbalanced via internal
jumpers (labeled BAL/UNBAL) if required for a particular source.
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RCA Output Jacks: These four channels of RCA line level outputs are for signal connection to your
amplifier(s). CH1/2's output will depend upon which INPUT CH setting is selected for CH1/2 (see pg3),
while CH3/4 will always pass through its input signal directly. When selected, the AUX input will supply
left/right stereo signals to both CH1/2 and CH3/4 outputs. Use quality interconnects to ensure stable
connection and minimize the possibility for induced noise.
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Remote Level Control Jack: This RJ45 jack is for connecting the supplied cable to the external multi-
function remote controller. A standard ethernet cable may also be used.
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Mounting Tabs: These mounting tabs are for securing the link4 during installation with screws or cable
ties. They are removable if the unit can be safely secured by another method.
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Variable Gain Adjustments w/Clip LEDs
2ch/4ch Input Select
2-Way Summing w/Retained CH3/4 Level Control
Auto Turn-On via DC-Offset or Audio Signal Detect
Generated +12V Remote Output
OEM Load Detect Compatible
Selectable Ground Isolation
Locking Detachable Power/Speaker Terminals
Panel Mount RCA Jacks
Compact Aluminum Chassis w/Detachable Mounting Tabs
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