Installation Notes; Mounting; Power Requirements; Audio Connections - Lexicon MPX 1 - REV User Manual

The MPX 1 uses one EIA-standard rack space, and can be mounted on any
level surface or in a standard 19 inch (483 mm) rack. If the unit is mounted in a
rack or road case, support the rear of the chassis to prevent possible damage
from mechanical shock and vibration.
The maximum ambient operating temperature is 104°F (40°C). Provide ade-
quate ventilation if the unit is mounted in a closed rack with heat-producing
equipment such as power amplifiers.
The MPX 1 is equipped with a 3-pin IEC power connector and detachable cord.
The unit will operate with power sources from 100 to 240 volts AC, 50-60Hz.
Power switching to actual line voltage is automatic.
Analog Audio
For best performance, maintain balanced connections, and use high-quality,
low-capacitance, twisted-shielded pair cable.
When connecting MPX 1 outputs to single-ended, unbalanced devices, leave
the low side floating and connect the grounds between the units.
Digital Audio
Connectors are provided for S/PDIF (CP-340 Type II) Consumer Digital Audio
I/O. 75 coaxial cable suited for digital audio or video signals is required. Audio
grade cable is not suitable. Only 44.1kHz signals are recognized.
Mono Applications: Using the MPX 1 Inputs with a Mono Source
Many of the programs in the MPX 1 are designed to process stereo input signals.
These programs will also work and sound great with mono signals - but you need
to configure the unit for mono. It will not automatically compensate for single-wire
mono input connections.
There are two ways to use the MPX 1 in an installation where its inputs will be
driven from a single, mono source:
• Use a Y-connector to send the signal to both inputs.
• Connect the mono signal to either the Left or Right input connector, then
change the System mode Audio Input Mode parameter. If the Left input is
connected, change the setting to Mono (L only). If the Right input is
connected, change it to Mono (R only). The Mono settings of this parameter
apply to the S/PDIF digital inputs as well. This allows you to select either the
left or the right digital channel for processing.
NOTE
Individual programs can be optimized for mono input by simply inserting a mono
effect, such as Volume (M), into the first block of the routing map. See Chapter
3: Editing for more information on routing. See Chapter 7: The Effects and
Parameters for more information on individual effects.
Product Overview

Installation Notes

Mounting

Power Requirements

Audio Connections

1-3