Lexicon MPX 100 Product Introduction

Lexicon Inc. • 3 Oak Park • Bedford MA 01730 USA • Telephone 781-280-0300 • Fax 781-280-0490
MPX 100 Dual Channel Processor
Stereo 44.1kHz S/PDIF Digital Output
Specifications subject to change
without notice.
Specifications
Audio Inputs (2)
Level -20dBu
Impedance 500K unbalanced for
Direct Instrument input
(Unit detects mono input
on the right input)
1/4" connectors
Analog Audio Outputs (2)
Level +8dBu typical
Impedance 75Ω: headphone output
(Left only used for mono
output; Right only used
for stereo headphones)
1/4" connectors
Digital Audio Output
Digital S/PDIF output (always active)
Sample Rate 44.1kHz
ConnectorCoaxial, RCA type
Footswitch
Tip/Ring/Sleeve phone jack for
Bypass and Tap (optional)
Frequency Response
Wet/Dry 20Hz-20kHz, ±1dB
THD+N
<0.05%, 20Hz-20kHz
Dynamic Range
A-A >95dB typical, 20Hz-20kHz,
unweighted
A-D >100dB typical, 20Hz-20kHz,
unweighted
Conversion
20 bits A/D, 20 bits D/A
44.1kHz sample rate
Crosstalk
>45dB
The MPX 100 is a true stereo dual-channel procesor with 24-bit internal processing, 20-bit A/D-
D/A and S/PDIF digital output. Powered by a new version of Lexicon’s proprietary Lexichip,™ the MPX
100 has 240 presets with classic, true stereo reverb programs such as Ambience, Plate, Chamber and
Inverse, as well as Tremolo, Rotary, Chorus, Flange, Pitch, Detune, 5.7 second Delay and Echo. Dual-
channel processing gives you completely independent effects on the left and right channels.
A front panel Adjust knob allows instant manipulation of each effect’s critical parameters and an Effects/
Balance knob lets you control effect level or the balance of dual effect combinations. An easy Learn
mode allows MIDI patching of front panel controls. In addition, tempo-controlled delays lock to Tap or
MIDI clock, and Tap tempos can be controlled by audio input, the front panel Tap button, dual footswitch,
external MIDI controller or MIDI Program Change. Other features include dual 2-stage headroom
indicators, a headphone output, a software-selectable MIDI OUT/THRU port, pushbutton or footswitch
selection of dry or muted audio output and a 20Hz-20kHz ±1dB Frequency Response.
Power Requirements
9VAC, 1A wall transformer provided
Dimensions
19"Wx 1.75"H x 4"D
(483x45x102mm)
Weight
Unit: 2 lbs, 2 oz (0.959 kg)
Environment
Operating
Temperature 32° to 104°F (0° to 40°C)
Storage -30° to 75°C
Relative
Humidity 95% non-condensing
PRELIMINARY DATA

Lexicon MPX 100 Specifications

Audio Inputs and Outputs

audio input level	-30dBu to +4dBu
audio input impedance	500K unbalanced
audio output level	+8dBu typical
audio output impedance	75Ω for Headphone output

Digital Audio

digital audio output	20-bit Digital S/PDIF
sample rate	44.1kHz
conversion	20 bits A/D, 20 bits D/A

Frequency and Distortion

frequency response	20Hz-20kHz, ±1dB
thd+n	<0.05%, 20Hz-20kHz
dynamic range A/A	>95dB typical, 20Hz-20kHz, unweighted
dynamic range A/D	>100dB typical, 20Hz-20kHz, unweighted
crosstalk	45dB

Power and Environment

power requirements	9VAC wall transformer
operating temperature	32° to 104°F (0° to 40°C)
relative humidity	95% non-condensing

Weight and Dimensions

dimensions	19"W x 1.75"H x 4"D (483 x 45 x 102mm)
weight	2 lbs, 2 oz (0.959kg)
internal audio data path	DSP: 24-bit