Follow all instructions and adhere to warnings marked on the unit and in the .. MPX ix. Important User Information. Lexicon is pleased to present its user. Lexicon MPX Lexicon MPX dual effects processor (angled view). . The manual rightly points out that, because such complex processing introduces a. View and Download Lexicon MPX user manual online. Lexicon User Guide bit Dual Channel Processor. MPX Computer Hardware pdf manual.

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Only a qualified technician or an authorized lexicon distributor should perform servicing. Fax Service This document should not be construed as a commitment on the part of Lexicon, Inc. The information it contains is subject to change without notice. MPX Section 3: System Mode System Mode Functions Program Descriptions Single Programs. Diese Spannung kann so hoch sein, dass das Risiko eines Msnual besteht. The printed edition of the user guide is in English only.

Pour mxp de plus amples informations sur Lexicon, Inc. The MPX is a true stereo, dual-channel processor with bit internal processing, analog-to-digital conversion, and digital-to-analog conversion. System Toggles between activating and deactivating System Mode.

See Section 3 for more information about System Mode. Numbers 1 to 4 correspond to numbers 1 to 4 beneath the front panel display. Front Panel Display Indicates information about the current program.

See page for more information about the front panel display. It is also calibrated in 2dB mp per pixel. The lexicno letter indicates input type, which is selected with the System Mode parameter Input Source see page The number after the letter indicates the sample rate See page for more information.

The unit accepts inputs at Either may be used. Connections should be made utilizing high-quality shielded cables. The MPX produces effects from either mono or stereo sources.

Output Level, the first System Mode parameter, will be displayed. Press the System button again to deactivate System Mode. Basic Operation Selecting and Loading Programs Press the front panel Edit Pages button to cycle through available Edit Pages for the loaded program. However, it includes 64 memory locations available for storing user-modified programs.

To store a program: Press the Store button. Dynamics uses a different compression mechanism, explained on page The compressor sits in the wet component of the signal in front of the effects in the loaded program. It is controlled with four The message “Knob 3 to change” will appear at the top of the front panel display to indicate that EDIT knob 3 is now available to adjust tempo.

If desired, turn EDIT knob 3 to further adjust tempo in bpm beats per minute. Audio tap is a must for live performances.


It offers a simple method of setting delay times and modulation rates to match the music. Clock Source parameter Lexicon will When set to Processed, the digital output is the same as the analog outputs. Its mix level will reflect the current setting of the Mix parameter. When set to Dry, the digital output is the input.

Disabled, the unit ignores Learned Patches, preventing accidental changes. When set within a range of 1 to 16, the unit responds to messages sent on the selected MIDI channel.

Programs stored in the User Bank are still available, but cannot be modified. Press the ,anual panel Store button to execute the dump.

When dumped back, the System Mode settings and Learned Patches will take effect immediately. Press the front panel Store button to execute this procedure and return the User Bank to its factory-default condition.

Lexicon MPX 550 User Manual

This procedure cannot be executed when a User program is running or when the System Mode parameter Memory Protect is set to Enabled. Decay time was set to instant, while hold time varied duration and sound. The Gate programs provide a fairly constant sound with no decay until the reverb is cut off abruptly.

The clean reverberation of Hall programs is designed to add spaciousness without altering source material. In addition to general instrumental and vocal applications, the Hall programs give separately recorded tracks a sense of belonging to the same performance.


Stereo Chamber programs produce even, relatively dimensionless reverberation with little color change as sound decays. These programs are useful on drums and percussion, and can also be applied to electric guitar tracks. Program Descriptions Room Programs “Adjust” Tremolo is essentially a rhythmic effect. Chorus effects are also often combined with plates, echoes, and other reverb effects.

These programs are stunning on acoustic or clean electric lexcion.

Studio Manuals – Lexicon

MPX FLANGE Flange effects were originally created by simultaneously playing back identical programs on two tape recorders, then using hand pressure against the flange of the tape reels to slow down first one machine, then the other. The result was a series of changing phase cancellations and reinforcements, with characteristic swishing, tunneling, and fading sounds.

Set the Mix parameter to Wet to achieve the full effect of these programs. The stereo polyphonic Pitch programs can be used to shift program material or monophonic sources within a range of one octave up to two octaves down.

With all delay and echo effects, note the way the repeats fall rhythmically to the beat. The most effective delay and echo patterns are those that lock with the tempo of the music. MPX In all delay programs and dual programs, the unit uses the MstrDly parameter to scale delay times that are not controlled by Tempo. In some programs, the “Adjust” parameter controls MstrDly. Stereo Stage provides stereo reverb while preserving the dry signal.


To use this program, note the following: The other effect e. Delay receives input from the right channel only and sends output to the right channel only. In Cascade variations, the parameter also varies the amount of the first effect or dry signal fed into the second effect.

The Mono Split routing configuration is illustrated on page It can be used to match volume levels between the dry, bypassed, and compressed output obtained with typical music material. If the System Mode parameter Mix Mode is set to The parameter setting defines the maximum increase in signal level due to expansion. Higher settings increase the level of expansion applied. Maximum expansion is applied to signals that rise well above the expansion threshold for longer than 50ms.

Lexicon to 0dB 0. Compression can be used to match the levels of louder sources to those of quieter sources. The value indicates the maximum output level of the left or right channel, whichever is greater. The tick marks are placed in 3dB increments. The right most tick mark indicates 0dB or maximum output level. Lexicon Off, Modern, Vintage. Peak Expansion Meter Indicates the level of peaks above the peak expansion threshold.

Low-level peaks are shown as one or two graduated bars. Slightly higher peaks of longer duration are shown as three graduated bars. High-level peaks are shown as three solid bars. Non-essential parameters have been removed from the Edit Pages. These programs contain two delays. The first is controlled by tempo and generally used to create longer delays and echoes. The second is set manually with the Delay parameter, and can be used to create a “slap” When a delay parameter setting is changed, the graphics pictured below appear.

When the Level parameter setting is changed, the graphics pictured below appear. Controls the speed at which the compressor responds when input signals increase above threshold.

CmpRatio Sets the ratio of gain reduction for input signals above threshold. MPX CmpRels Controls the rate at which the compressor relaxes when compressed input signal levels fall. Decay 73ms to In Ambience programs, Decay controls the length of the ambience “tail”.

High settings can cause signal overload.