Lexicon MX300 [7/31] 2 3 4 6 5 7

1 2 3 4 65 7

1. Power Jack

Attach the power cord here.

2. USB Port

Provides communication with a computer for use with MX-Edit

Editor/Librarian

software and MX300 plug-in window using a standard USB cable. When the MX300 is

connected to a computer via USB, the blue USB LED next to the main display will light.

3. Footswitch Input

The optional Lexicon® LEX-DFS 2-button footswitch can be plugged into this TRS

jack for remote control of the MX300 (see page 33 for more information).

4. MIDI In, MIDI Thru

Provides MIDI operation capabilities. Two 5-pin MIDI DIN connectors are available for

MIDI IN and MIDI THRU. (See page 44 for the MIDI Implementation chart.)

5. S/PDIF Digital In/Out

Digital input accepts 44.1kHz / 48kHz signals. When the S/PDIF digital input is select-

ed and active, the S/PDIF LED on the front panel lights.

Important: It is recommended that you do not connect any digital device to the

MX300’s S/PDIF inputs that transmits at sample rates other than 44.1 kHz or 48 kHz

(such as 96kHz). Doing so can cause unpredictable performance. Make sure the device

you are connecting to the MX300’s S/PDIF In is set as the Clock Master (if that option

is available) and transmitting at a sample rate of 44.1kHz or 48kHz only. As with any

other connection, if you need to unplug the S/PDIF cable, it is recommended that you

switch to the analog inputs (see Input Source in the System menus) or press the

Program Bypass button before disconnecting the cable.

6. Balanced Analog Line Output Pair

Dual RF-filtered 1/4" balanced/unbalanced TRS and balanced XLR line outputs are

servo-balanced, so no signal loss is incurred when using unbalanced connections (1/4"

inputs only). If only a single plug is connected to the Left output, both Left and

Right signals can be summed to mono by selecting Anlg Mono L in the System

Menu.

7. Balanced Analog Line Input Pair

Left and Right active analog 1/4” TRS or XLR balanced line inputs. If only a single

plug is connected to the Left input, the signal can be split and sent to both the Left

and Right input paths by selecting Analog Mono L in the Input Source section

of the System Menu.

NOTE: XLR and 1/4” inputs cannot be used simultaneously. Plugging in a 1/4” TRS

plug will disable the corresponding Left or Right XLR input.

The Rear Panel

6 7

The Rear Panel

The rear Panel

MX300