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Oberheim Matrix 6R (1986)

Oberheim Matrix 6R

Trend price : 350-450€

Module rackmount version of the Matrix 6 synthesizer.
The Matrix series gets the name the Digital Matrix Control a complex signal modulation router. First model was the classic Matrix 12 synthesizer, today quite sought-af

Overview
RACKMOUNT (weight: 8 Kg) 2 units.
The main panel features a 16-characters VDF fluorescent display (adjustable brightness), 23 membrane buttons and 1 volume slider.
Terminal connectors:
- main out
- cassette interface I/O
- Midi interface
- expression pedal input
- pedalswitch input for sustain or analog trigger input
- memory protect switch
- headphones (front)
- remote connector (front) for custom Sysex editor, a prototype never released


Voice
6 channels polyphony. Each voice is composed by 2 syncable DCO oscillators
DCO1: pulse (adj width) / saw / wave / mix saw-triangle
DCO2: pulse (adj width) / saw / wave / mix saw-triangle / noise

Filter
a 4 poles resonant filter. The VCF can auto-oscillate and consequently modulate the DCO1 by Frequency Modulation process. It follows the FM basic principle like Yamaha DX-7, but in this case the DCO1 is the modulator and the VCF is the carrier.

Performance
- 3 modes portamento generator (for pitch or cutoff)
- split zone + unison
- velocity to VCF / LFO

LFO
2 modulators (shapes: sawtooth up / down, triangle, square, random, S&H and noise) with variable depth, 3 retrig modes and lag mode.
1- LFO1
: destinations can be freely assigned into the matrix modulation
2- LFO2
: destinations can be freely assigned into the matrix modulation
A third slimmed-down LFO3 acts as a simple vibrato with individual depth, frequency and same shape

Matrix
computerized section is a kind of signal router previously implemented in more expensive Matrix 12: a totally open structure! each sound manages up to 10 combinations between 20 sources and 32 destinations.

Envelope
3 EGs (4 segments + 1 delay time + 1 main level)
1- EG1 is assigned into the matrix control
2- EG2 is routed to amplitude by default but can be re-assigned by matrix control
3- EG3 is be assigned into the matrix control

Midi
basic contro changes, but full sysex implementation. Some controls:
- program change
- pedals and levers can be CC# re-assigned
- it is possible to assign 2 Midi channel to lower and upper part (bitimbric)

Memory
- 100 patch slots
- 50 split zones configurations (the "multis")


Audio demo:


Video Clip:

video clip


Review
OK: affordable / complex routing
NOT : edit interface / maybe too complicated
" Good sound, pads, brasses and effects - but nothing to do with classic Oberheim OBX sounds (maybe closer to matrix12) Still affordable, the maxtri6r is complicated to edit with such interface, but it is a reliable source of analog polysounds at affordable price."

cool


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Text , review, special demos copyright polynominal.com / Eric Pochesci

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