Oberheim Matrix-12 User Manual

PEDAL 1
PEDAL 2
LEVER 1
LEVER 2
EXTTRI
The Pedal inputs of the MATRIX-12 are designed to
accept pedal controllers of either an active or a non-active
type. This means that an active pedal with a battery or AC
power source will work, provided that it has an output
voltage of 0 to +5V DC and an output impedance of
«1k £1 If a non-active (passive) pedal is used, it should be
a 47k Q resistive type that utilizes a linear taper
potentiometer. In-line type pedals that utilize an audio
input and output are not recommended. The connecting
cable must be two conductor shielded.
The Pedal input displays will indicate whether a pedal has
been connected to the MATRIX-12 or not as its micro
processor is able to detect the presence of a pedal
connected to the rear panel input jacks.
When disconnected, the displays read OFF.
When a pedal is connected, you are able to select its
polarity -whether it is a pedal with a positive electrical
reponse or negative. As an example, if you are using the
Oberheim FS-7 footswitch for a sustain pedal, set its
polarity to H-Ii. You can also use the sustain pedal that is
supplied with the Yamaha DX-7. Set its polarity to V.
Rocker-type continuous pedals- such as those used for
volume control - also have polarity. If you are using the
Oberheim POB-X pedal, set its polarity to V. The
volume pedal supplied with the Yamaha DX-7 will not work
at all because it is a three-conductor type.
The normal operating settings of the MATRIX-12's Levers
is V for both. When set positive, LEVER 1 (normally
routed for Pitch-Bend) will bend up when pulled toward
you and bend down when pushed away from you. When
LEVER 2 (normally routed for Vibrato) is set positive,
Vibrato modulation is obtained when the Lever is pulled
toward you with no effect when pushed away.
The action of the Levers can be reversed just by setting
their polarities negative.
The External Trigger input is sensitive to DC-type triggers
sent to the MATRIX-12 from external timing devices such
as drum machines.
Ideal trigger sources are those that provide at least +5
Volts but no greater than +1OV with a pulse width of 1 ms
(millisecond) to 20 ms.
Matrix-12 Owner's Manual
71

Oberheim Matrix-12 Specifications

General

Brand	Oberheim
Model	Matrix-12
Category	Synthesizer
Language	English