Lexicon MPX G2 User manual

10
Effects
The MPX G2 contains a "Hall of Fame" assortment of guitar effects
such as Chorus, Compressors, analog Distortions and
Overdrives, tape-style Echoes, Flangers, vibey Phasers, Pitch
Shifters, and vintage Wahs. A bypass button can defeat any of its
76 effects, which are broken into seven types. Six of the seven Gain
effects are designed for use as stomp boxes in front of the guitar
amp, where they deliver the same sound as the classics that inspired
their design. A "Feel" control for the Overdrive effect dials in the
amount of sag associated with different batteries and power supplies.
A fully featured, programmable recording Preamp dials in tones
ranging from super-clean to high-gain. A built-in analog speaker
simulator applies the finishing touches with 16 cabinet variations.
The MPX G2 also offers a collection of vintage effects including:
Octabuzz, Orange Phaser, Red Comp, Sweep Filter,Tremolo, UniVybe,
and Wah (Type "C" or "V"), each faithful to the feel and sound of the
original. Other essential effects include Auto Panner, Multi-voice
Stereo Chorus, Detune, Diatonic Harmony, Mono and
Stereo Flangers, Pitch Shifter, and Volume Pedal, as well as
Rotary and other time-based modulation effects. There are also
several Mono and Stereo delay effects: Auto Looper, Ducking Delay,
ultra clean digital Delays, warm Echoes, and a JamMan®phrase
looper. Delay times can be set with time values, or rhythmically with
the Tap button. A special Feedback Insert allows other effects to be
placed inside the delay feedback loop, a studio secret used to create
some classic delay textures. A tone tool box allows users to polish
and shape sounds. These tools include Mono and Stereo Parametric
Equalizers (1,2,3, and 4-band), as well as a crossover and frequency
splitter. Classic Lexicon reverb is well represented with Plate, Gate,
Hall, Chamber, and Ambience effects. Dedicated processing
resources allocated to these reverbs guarantee their availability in any
program no matter which other effects are loaded.
Highlights
•World-class Lexicon reverb: Plate, Gate, Hall, Chamber, and
Ambience
• 2 DSP engines including Lexicon’s proprietary LexiChip®
• 24-bit A/D and D/A
• 250 presets; 50 user programs
•Lexicon’s analog distortion technology Dynamic Gain for
screaming overdrive and distortion
•Two separate audio paths to place effects both in front of the
amp and in its effects loop
•Use without an amp as a stand-alone preamp with effects
•Over 70 effects
•
Balanced analog inputs and outputs (XLR and 1/4”)
• Tap Tempo for instant setting of delay and modulation times
(may be set using footswitch)
•Full MIDI control
•Internal power supply
•Optional MPX R1 remote controller
Hardware
The MPX G2 contains all hardware needed in a custom guitar
effects rig. It offers quick and simple location of specific styles such
as Rock or Blues, as well as types of programs such as Overdrive.
Complete editing features facilitate the customization of presets, the
creation of new programs, the design of Soft Row parameters, the
uplication of effects into new programs, and the arrangement of
fects into any sequence or routing configuration.

11
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Stomp Box and Rack Effects
Effects like Cry Baby®, Dyna Comp®, Mu-tron III®, Octavia®,Tube Screamer®, and
UniVibe®became classics because of their sound and feel when
connecting a guitar to the front end of an amp. The MPX G2 recreates these
vintage effects, allowing users to place them between the guitar and the input
to the amp. It also offers unique methods to control noise that results when
stomp boxes are used with high-gain guitar amps. An analog hard-wire relay
provides a direct path between player,guitar,and amplifier when effects are not
in use. An analog noise gate is located at the end of the stomp box path with
the sensing at the input of the G2. This accommodates a wide range of
dynamics without triggering the gate, which is factory preset to be manually
operated with the guitar’s volume control. Send classic rack effects such as
Delay, EQ, Pitch Shift, and Reverb to the amp effects loop by connecting it to
the MPX G2 Insert Returns.A digital noise gate at the beginning of the audio
path controls noise without muting the tails of post-gain effects.
Direct Recording
The MPX G2 is the most complete direct recording processor available for
guitars. Its built-in, fully programmable analog preamp delivers a wide range of
dynamic sounds. It offers a set of programs for stand-alone applications,
including an Amp Collection of more than 20 different amps, each with the
clarity and dynamics that can only be delivered by analog circuitry. The Studio
Effects and Studio Spaces programs are just as impressive. Studio Spaces makes
use of Lexicon’s world-class reverb algorithms to provide an assortment of
recording rooms that place air and space around the guitar during mix down
and tracking. The result is like adding a few reverberators and several live
tracking rooms to the studio. The effects include an Acoustic Room, Gated
Verb, Jazz Club, PCM 60 Room, Rhythm Room, Solo Room,Tape-delayed Plate,
and Tracking Room, as well as a program that varies the position of a close
microphone in front of a high-gain amp. Studio Effects offer a collection of
classic studio effects for recording guitar tracks. Each has an appropriate built-
in amp variation. For maximum control, users can add sounds from the Amp
Collection to Studio Spaces or Studio Effects. The analog speaker
simulator featured in the MPX G2 allows any external preamp or processor
to become the tone source for these recording treatments.
Effect Ordering and Routing
Effect ordering and routing within each program is flexible with the MPX G2.
Each effect block is independent in each program. Effects can be arranged in
any order by “dragging and dropping” them on a visual map. Editing MPX G2
programs is simple. A front panel Soft Row button accesses the most useful
parameters of each program, while front panel System and Edit buttons
provide all controls needed to create or reconfigure programs.
Patching System
In addition to controls built into certain effects, the MPX G2 patching system
provides controllers such as A/B Glide, LFOs, and Tempo that can be assigned
to chosen effect parameters. Users can assign up to five per program. In
addition, there are ten global patches available for use in all programs.
MIDI Implementation
The MPX G2 allows MIDI control of all effect parameters, as well as A/B and
Tap. It can transmit its own MIDI clock based on front panel Tap Tempo, or
synchronize Tempo parameters to incoming MIDI clock messages. All internal
control sources, including LFOs and pedals, can be transmitted as MIDI
Controller Messages. Additionally, the G2 can perform standard bulk data
dump and load functions.
MPX R1 MIDI Remote Controller
The optional MPX R1 adds foot control to the MPX G2 and MPX 1. A single
cable provides power and 2-way communication. Dedicated stomp box style
buttons and LEDs allow complete access to all of the effects.The MPX R1 can
also be used as a stand-alone MIDI remote controller and includes:
• Stomp box control of MPX 1 or
MPX G2
• Metal chassis, pedal and switches
• MIDI program select and control
• Programmable expression pedal with toe switch
• Dedicated footswitches for TAP tempo and MPX 1 A/B switching
• 2 programmable relays switch up to 4 amplifier channels and control
multiple effects at once. Relay settings can be stored with MPX G2 programs
• MIDI setups control different devices on multiple MIDI channels with the
push of a single button
• Press and hold the Bypass button to automatically mute the audio and
activate a great chromatic tuner. Tuning information is displayed in real time
on both the MPX G2 and the MPX R1

Instrument Input: Mono 1/4”
Input Level: +2.2dBu to +10dBu
Input Impedance: 1megΩ, unbalanced
Return Inputs: Stereo 1/4”
Input Level: -10dBu to +18dBu (+4 nominal inputs)
Input Impedance: 50kΩ, unbalanced
Send Output: Mono 1/4” unbalanced
Output Level: +4dBu to +18dBu, unbalanced
Output Impedance: 100kΩ, unbalanced
Analog Audio Output: XLR and 1/4” balanced (T/R/S)
Output Level: +18dBu, balanced; +21dBu, unbalanced
Output Impedance: 600Ω, balanced; 100kΩ, unbalanced
Conversion: 24-bit A/D; 24-bit D/A
Internal Audio DSP: 32-bit
Frequency Response: 20Hz - 20kHz ±1dB
THD + Noise: <0.01%, 1kHz
Construction: All metal chassis, switches and expression
pedal
External control inputs: 1/4” T/R/S connector supports up to 3
on/off switches; 1/4” T/R/S connector for
external expression pedal
Internal relays: 1/4” T/R/S jack connected to two internal
programmable relays
MIDI Interface: 7-pin DIN connector provides phantom
power and two-way MIDI communication
with the MPX 1 or MPX G2
5-pin DIN connectors for MIDI THRU and IN
Expression pedal: Vintage mechanical design, all steel
construction, programmable toe switch
MIDI functions: MIDI bank and program select for up to
300 programs; Switches and pedal(s) can
be individually set to transmit any
controller. The status of each MIDI switch is
indicated with a green LED. Tap tempo can
be transmitted as MIDI Clock
Relay mapping: Different relay states can be memorized for
each of 990 MIDI program numbers.
Relays can operate as on/off 1-4 or as two
independent on/off switches
MPX functions: When connected to an MPX G2 or MPX 1
(V2.0) via 7-pin cable, LEDs automatically
display the following each time a new
program is loaded: Program number;
Master Bypass state; A/B state; Tempo
rate; State of each effect block (Pitch,
Chorus, EQ, Mod, Delay, Reverb on
MPX 1; Gain, Chorus, Delay, Effect 1,
Effect 2, EQ, Reverb on MPX G2); effect
on=green, effect bypassed=red, effect not
active=off.
The state of any active effect can be
instantly changed by pressing its
associated switch.
Dedicated switches control A/B and tap.
Power Requirements: 9 volts AC (wall transformer included)
25-foot, 7-pin DIN cable for phantom power
from MPX 1 or MPX G2 (included)
Dimensions: 23” W x 3” H x 8” D
(584.2 x 76.2 x 203.2 mm)
Weight: 9.5 lbs (4.3 kg)
Dynamic Range: A/A: 97dB typical,
20Hz - 20kHz, unweighted
MIDI Interface: 7-pin DIN connector for MIDI IN
and powered bidirectional remote;
5-pin DIN connectors for
MIDI THRU and OUT
Footswitch: 1/4" T/R/S connector for three
independent footswitches
Footpedal: 1/4" T/R/S connector
(10kΩ- 100kΩimpedance)
Power Requirements: 100 - 240 volts AC; 50 - 60Hz; 25 watts
(3-pin IEC connector)
Remote Power In: 2.5 mm 9 volts AC (not included)
Dimensions: 19" W x 1.75" H (1U) x 13" D
(483 x 45 x 330 mm), rack mount standard
Weight: 7.125 lbs. (3.2 kg)
Operating Temperature: 32° to 104°F (0° to 40°C)
Maximum Humidity: 95% without condensation
MPX G2
MPX R1