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Lexicon Lxp-1

Multi-Effects Processor (1988)

Lexicon LPX1

"budget multi effect in a half rack from famous Lexicon company, a little box full of reverbs, delay, chorus and more"

Sound

OVERVIEW LXP1 offers 16 preset reverb patterns, 128 user memories accessible by MIDI controller, some adjustable parameters thanks to optional remote programmer/controller MRC (pic below). Quite easy to use with a 16-position rotary encoder to select the effect. Two more knobs labelled Decay and Delay, these provide editing control over main edit e.g with reverb programs these are  reverberation decay time and pre-reverb delay (up to  0.25 seconds in all cases). In other programs you have to check out the manual for relative parameter.

GROUPS There are two main groups to choose from: effects and reverb. Reverb have various sub-section like: HALL (dark bright), ROOM (small medium large) and PLATES (also dark bright). Other effects are chorus, gated reverbs and delay (with various panning ping pong effects)

Geek corner: PCM54HP burr brown AD/DA Converter, Zilog Z80 CPU, D71051C NEC SERIAL CONTROL IC, TMS4464 262,144-bit dynamic random-access memory

LPX1

The MRC

For avanced editing the MRC is needed, as, for exemple the reverb have many possibile tweaks: Decay Time, Pre-Delay Time, Pre-Delay Feedback, Size, Diffusion, Bass Multiply, High-Frequency Cutoff and Effects Level. The Mrc (version 4) is compatible with other Lexicon FX units as the famous PCM-70, and LXP-5.  

The factory programs are dedicated to those machine, but the MRC is able also to control generic machines units (e.g CC, pitchbend) but also SYSEX strings to edit older machines or even synthesizers. You can save your custom setups in one of the 20 slots available.

LEXICON

Technical Data

Audio Inputs
Level: -20dBu minimum (OdBu=0.775Vrms)
Impedance: 50k Ohm unbalanced stereo
                 25k Ohm unbalanced mono
Connections 1/4" jacks

Audio Outputs
Level: +4dBu nominal, +18dBu maximum
Impedance: 600 Ohm unbalanced
Connections: 1/4" jacks

Frequency     Wet: 20Hz-15kHz 11.0dB
Response     Dry: 20Hz-20kHz 10.5dB
Dynamic Range    85dB (typical), 20Hz-20kHz
Total Harmonic    Wet: 0.07% 1kHz
Distortion    Dry: 0.05% 1 kHz
Encoding    16-bit linear PCM
Memory    16 permanent presets
128 user programmable registers
MIDI IN, MIDI THRU/OUT internally selectable
Footswitch     Bypass, 1/4" jack
RFI Shielding     Complies with FCC requirements for Class A computer equipment
Power Requirement    9VAC, 1A from external transformer
Dimensions        216 x 43 x 203mm
                        (8.5"W x 1.7"H x 8"D)
Weight               3.5 lbs (1.6 Kg)
Shipping weight:     5.7 lbs (2.3 Kg)
LXP1

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Audio demo and video 

LEXICON LXP1 with MRC LEXICON LXP1 with MRC
70 out of 100 based on 1 user ratings
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