Lexicon 480L | PDF - Freeverb3

Installation and Audio Connections
Analog Audio Connections
See page 1-2 for details about audio interfacing
(pinouts, impedance, etc.)
The 480L is designed to take advantage of the flexibility
of a mixing console. The figure below shows a typical
configuration. For maximum utility, use independent
sends that can be assigned as either prefader or
postfader. You can use the console's effects returns if
they are pannable or assignable, but for greater creative
control, you may wish to connect the 480L outputs
to regular input channels.
We recommend experimentation to arrive at the best
configuration for your own system. Actual connections
should always be checked carefully for proper impedance,
polarity, and levels.
When using mono signal sources, either connect the
left and right inputs in parallel, or use the mono split
configuration (described in Chapter 2).
Typical Audio Connections.
Floating the Analog Ground
In some applications it may be desirable to float the
480L's analog circuitry from the chassis ground. This
can be accomplished by simply removing the blue
jumper block located on the top side of the main circuit
board near the two main input connectors. Store the
jumper block on one of the posts in case you ever need
to reinstall it.
When the jumper block is removed, the analog signal
grounds are floated from the chassis at DC, but are tied
to the chassis for protection through a 1000 pF bypass
capacitor and a 180 V metal oxide varistor.
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