Mark Levinson 380 - Using a Turntable; Tip Polarity for External IR Input

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using a turntable
If a turntable is to be used with the Nº380, it must be used in con-
junction with a phono preamp such as the Mark Levinson Nº25.
The phono preamp used should provide RIAA equalization and
deliver a line-level signal to the input of the Nº380 (both standard
functions of a phono preamplifier)..
7 External IR Input
The Nº380 incorporates an infrared repeater input to facilitate a
wide range of installation options. If desired, the Nº380 may be
placed inside a cabinet or outside the normal line-of-sight in the
listening area, with the controlling IR signal being relayed to the
Nº380 by any of a number of commercially-available IR repeaters.
The specifications for this IR input call for a triggering voltage of
5 volts at no more than 100 milliamps of current, with the tip of
the
1
⁄8" mini-plug having positive polarity, as below:
tip polarity for external IR input
+–
5 volts @ less
than 100 mA
If you would like more information on the possibility of using an
infrared repeater with your Nº380, please contact your Mark
Levinson dealer.