MPX1

2in 2out Multi Effects Processor

The MPX 1 Multi-Effects Processor fulfills the promise implied by the term "multi-effects." When summoned to do their best reverb, most single DSP multieffect processors run out of gas — you don't get additional effects. The MPX 1 has Lexicon's own proprietary Lexichip, dedicated to delivering uncompromised Lexicon stereo reverb or ambience, in addition to another processor to create the other digital effects. So you get your best reverb, at all times, along with as many as 4 additional stereo effects.

Standard Features

Multi-effects and Lexicon quality reverb without compromising sound quality
Intuitive user interface - edits the way you speak (i.e. press EDIT then REVERB...)
Built-in help: Hold down any button and it tells you what is going on
Balanced Analog I/O (1/4" & XLR)
56 effect algorithms
The most comprehensive modulation section we have ever devised: two LFOs, 2 AR Generators, S&H Generator, a random number generator, input level as a modulation source for expressiveness and more
Digital Inputs & Outputs (S/PDIF @ 44.1KHz) 24-Bit A/D/A Conversion
32-bit internal processing (depending on active FX blocks)
Discrete Stereo or Dual Mono Processing
>90dB of Dynamic Range
Multiple DSP Architecture
Up to 5 Simultaneous stereo effects routable in any configuration, with individual mix and gain for each effect
Intelligent Sorting features: Sort by Name, Number, Application (i.e. vocals, live sound, guitar etc.), Effect (i.e. chorus, parametric EQ, Pitch Shifting etc.) or Last 10 presets loaded (in case you forgot- we thought of everything)
A/B "Soft Switch" assignable as continuous controller (controls Patching, etc.)
Parameter Morphing
Dynamic MIDI™ patching & MIDI automation
Dynamic Patching™
Unique Tempo Modes including Tap-Tempo, MIDI clock control (with MPX-1 as slave or master device)
MIDI Arpeggiator

MPX1 Specifications

The MPX 1 is the processor that fulfills the promise implied by the term, "multi-effects." Multiple Processor FX technology combined with an interactive front panel, creates a new set of standards for others to follow... no less than you'd expect from Lexicon.

What To Expect

No compromise stereo reverb in combination with as many as 4 additional stereo effects
A "goof-proof" system for quickly fine-tuning any program, without having to enter an in-depth editing mode
Visual feedback to tell you exactly where you are and what features are available; on-board Help guides you all the way
56 Pitch, Chorus, EQ, Modulation, Delay and world-class Reverb effects
Complete flexibility of routing and effect order in every program
200 preset programs designed for a wide variety of audio sources and applications — with database sorting to let you find exactly what you want
Layered features; options are there when you need them, and out of the way when you don't
Dynamic control of all effects parameters with pushbutton access to the patch system
Extensive MIDI implementation
Comprehensive audio connectivity

Analog Audio Input	XLR and 1/4" balanced (T/R/S)
Input Level	-2dBu to +20dBu, balanced; -14dBu to +8dBu, unbalanced
Input Impedance	100k½, balanced;50k½, unbalanced
Analog Audio Output	XLR and 1/4"balanced (T/R/S)
Output Level	+18dBu
Output Impedance	600½unbalanced
Digital Audio Input	Coaxial RCA
Format	24-bit S/PDIF
Sample Rate	44.1kHz
Digital Audio Output	Coaxial RCA
Format	24-bit S/PDIF
Sample Rate	44.1kHz
Conversion	24-bit A/D;24-bit D/A
Internal Audio DSP	20-bit;32-bit
Frequency Response	20Hz - 20kHz ±1dB
Crosstalk	-60dB
THD	0.01%, 20Hz - 20kHz
Dynamic Range	D/A:>95dB typical, 20Hz - 20kHz, unweighted A/D:>90dB typical, 20Hz - 20kHz, unweighted A/A:>95dB 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 bypass and tap
Footpedal	1/4"T/R/S connector (10k½- 100k½impedance)
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 9" D (483 x 45 x 289 mm), rack mount standard
Weight	6.125 lbs.(2.8 kg)
Operating Temperature	32¡to 104¡F (0¡to 40¡C)
Maximum Humidity	95% without condensation

MPX1 Frequently Asked Questions

What are the effects of the MPX1?	The effects on the MPX 1 are as follows: PITCH: Detune (M), (S), (D) (Mono,Stereo,Dual) Shift (M), (S), (D) (Mono,Stereo,Dual) Volume (M), (S), (D) (Mono,Stereo,Dual) Test Tone CHORUS: Chorus Flanger (M), (S) (Mono, Stereo) Phaser Rotary Cab Aerosol Orbits Centrifuge 1 , and 2 Comb 1 and 2 EQ: 1 Band (M), 2 Band (M), 3 Band (M), 4 Band (M) 1 Band (S), 2 Band (S) 1 Band (D, 2 Band (S) Sweep Filter Wah Fc Splitter Crossover 3-Tone (M),3-Tone (S), 3-Tone (D) MOD Effects; Panner Auto Pan Tremolo (M), Tremolo (S) Overdrive Volume (M), (S), (D) (Mono,Stereo,Dual) DELAY: Delay (M), (S), (D) (Mono,Stereo,Dual) Echo (M), (S), (D) (Mono,Stereo,Dual) Looper Ducker REVERB: Chamber Hall Plate Gate Ambience Last reviewed: 8/24/2006
What are the dimensions of the MPX 1?	The MPX 1 is 19.0" W x 1.75" H x 9.0" D.
Is there a way to perform a hard reset of the MPX 1?	Yes, but this procedure will erase all user registers and restore the factory default settings. Turn MPX 1 off Press and hold STORE and turn the unit on. You should see a small case "d" in the display; release the STORE button. Press EDIT You should now see a "0" in the display. Turn the ADJUST knob clockwise until you see the number "2" in the display. Press STORE. The unit will cycle through its reset
Is there a PC control software application available for the MPX 1?	We are not aware of any PC software editors for the MPX 1 at this time. These applications are market driven and we suggest that you contact your favorite related software company.
How many effects can be used at once?	6
How many bits?	18 bit A/D, 20 bit D/A, 32 bit DSO, 24 bit SPDIF throughput. Newer MPX 1 units, starting with serial number: V0900-24196 have 24-bit A/D and D/A converters.
How does its reverb compare to the PCM91?	The MPX 1 has half the processing power devoted to reverb as that of the PCM91.
Can you have separate effects on separate channels?	Yes, please read the routing map section of the owners manual which begins on page 3-9.
Can the MPX 1 be changed to 220V?	The MPX 1 has a self switching power supply which conforms to any power provided between 90 and 240 VAC.
What do the footpedal and footswitch jacks do?	You can use an expression pedal and/or up to two footswitches to control any of the parameters within the MPX1.
How long of a delay can you get using the MPX 1?	You can have one voice of up to 2 seconds or two voices of up to 1 second each.
How do the reverbs compare to the PCM90/91?	The MPX 1 has very good reverbs, but they are not as powerful or controllable as those found in our higher end products like the PCM90/91.
How do I disable messages on display when the MPX 1 is idle?	Press the SYSTEM button. Turn ADJUST knob until display reads "Modes". Then use the < or > buttons to select "Sleep". Use the knob to select "off". Press the PROGRAM button to exit the System menu.
Does the MPX 1 processor have a tuner built in?	The MPX 1 does not have a tuner in it, but there is a preset called Tuning Note, program number 170. It's an internal sine wave generator set to output a tone equivalent to A4. The first parameter in the soft row changes the pitch.
Considering that the MPX-1, which sounds awesome, comes with several types of reverbs; What is the benefit to buying the PCM-91 unit ?	The MPX 1 is a great reverb. The PCM91 is a superior reverb offering twice the processing power devoted to the reverb sound. The algorithms of the PCM91 are lifted from our top of the line processorsm the M480L and M300 and offer a better sound and alot more editing options than you find with the MPX 1.
How do I initialize or restore the factory defaults in the MPX1?	Press the SYSTEM button. Make sure the VALUE button is lit. If necessary, press the "<" and ">" buttons until the display reads "System select:". Turn the ADJUST knob until the display reads "Initialize". Press the ">" button 1 time. Choose the type of initialization you want to do (page 5-12 in the Users Guide has the selection descriptions or see below). Press the STORE button. Press the ">" button to confirm. Initialization selection descriptions: All: Resets all MPX 1 parameters to their original factory settings. User pgms only: Erases all user programs. System only: Resets all MPX 1 parameters except user programs. Controllers: Resets the MPX 1 internal controllers (knobs, LFOs, etc.) to their default settings. Bypass patches: Removes any patches made between BYPASS buttons and external controllers. Global patches: Clears all global patches. Database: Resets Database assignments for all programs.
MPX 1 has a constant phasing sound.	Dry signal passing through the MPX 1 is delayed by slightly under 2ms. When combining the dry signal passed through the MPX 1 with the source signal there will be a flanged effect. If you are using the MPX 1 with a mixing console there is no reason to pass the dry signal through the MPX 1, so it should be set up as follows: Press SYSTEM and go to SYSTEM:MODES:MIX and set for GLOBAL. Press MIX and set MASTER MIX to 100%. Your phasing problem should now be gone.