Pittsburgh Modular System 90 Manuel utilisateur

PITTSBURGH MODULAR

SYSTEM 90 SYNTHESIZER

MANUAL AND

PATCH GUIDE

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Important Instructions – PLEASE READ

Read Instructions:

Please read the System 90 Synthesizer manual completely before use and retain for future reference.

IMPORTANT Ribbon Cable Power Information:

The System 90 combines a set of individual modules to create a complete instrument. The individual modules can be rearranged,

removed, and replaced with any compatible eurorack modules from Pittsburgh Modular and other manufacturers.

The System 90 uses a standard eurorack power rail to connect the modules to the internal bipolar +/-12v power supply. Please

pay very close attention to the orientation of the ribbon cable when adding and removing modules. The stripe on the ribbon cable marks -12v. This stripe

needs to line up with the -12v pins on the power rail and the -12v pins on the module. Failure to match up the pins correctly can result in damage to one or

all the modules in the System 90. On the power rail, the -12v pins are clearly labeled. On the individual modules, the positive and negative sides of the pin

connectors are labeled next to the power header on either the top or bottom of the PCB.

Do NOT remove individual modules from the Foundation while synthesizer is plugged in.

Do NOT unplug ribbon cables from the Foundation or individual modules while the Foundation is plugged in.

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Table of Contents

Important Instructions ………………….…… 2

Table of Contents …….…….…………….…… 3

Case and Power Specifications ………….… 4

System 90 Package Contents………….…… 4

An Introduction to Modular Synthesis….… 5

Modular Signal Paths ……………..........….. 6

Individual Modules ……………………..… 7-17

Patching a Modular Synthesizer ……..…. 18

Patch Guides …………………….….…… 19-35

1 Year Limited Warranty……………….…... 36

Service and Other Information ….….…… 37!

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Case and Power Specifications

System 90 Package Contents

1x System 90 Modular Synthesizer

1x Pittsburgh Modular Patch Cable Kit

1x External Power Adapter

Case and Power Supply Info

External Dimensions: 19.5” x 5.5” x 3”

Internal Specifications:

90hp Eurorack Case

Sliding Nut Mounting System with 18 Nuts Per Rail

External Power Adapter:

Connection: 2.1mm Barrel Type

Output: 12V-15V AC / 2000mA

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An Introduction to Modular Synthesis

The System 90 Synthesizer is a complete, standalone, fully modular synthesizer that bridges the gap between classic east coast synthesis and west coast

experimentation. The System 90 Synthesizer contains all the components necessary to create massive monosynth leads and basses, complex evolving

soundscapes and textures, along with everything in between. Innovative oscillators matched with a stunning filter pushes the Synthesizer System 90 to a

league of its own.

Because each module performs a single function, without patch cables the System 90 will not produce sound. A synthesizer voice must first be patched up

using cables to wire modules together. The System 90 allows the signal flow to be rewired with every patch. The voice can be as simple as listening to the

triangle output of an oscillator or as complex as a self running patch using all the modules.

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Modular Signal Paths

The System 90 signal path is divided into two types of signals: audio signals and control voltages.

The audio signal is the sound that is produced. The audio signal path starts at a sound source such as a DNA

Symbiotic Waves oscillator, Waveforms oscillator, LFO running at audio rate, or a self oscillating LPG module. The

audio signal is then patched through other modules used to shape the sound such as mixers, filters, and

amplifiers.

Control voltages (CV) manipulate the audio signal in several different ways.

Gates are represented by a high or low control voltage. A gate can be generated using a square or

pulse wave from an oscillator or LFO, or by using the GATE output from the Midi2 module. A gate

can be shaped using an envelope generator to control the attack, decay, sustain, and release of

the gate. The modified gate signal can then be sent to any CV input on the Foundation.

A second use for control voltages is as a modulation source. For example, a control voltage

from the CV output of the Midi2 module patched into the 1V/O input on the Waveforms

oscillator module controls the frequency of the oscillator based on the midi note received.

The LFO2 module provides two separate low frequency oscillators that make perfect control

voltage modulation sources. Audio signals also make a great control voltage source for

oscillator FM (frequency modulation).

As always, experimentation is essential to getting the most out of the System 90.!

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Individual Modules

The System 90 is a collection of 11 modules that will allow you to create complex analog sounds. The modular nature of the System 90 allows for deep

experimentation and a virtually unlimited sound palate. The following pages describe the functionality and controls of each module.!

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Midi2 Module

Description

The Midi2 converts standard midi note messages into the analog control voltages used by modular synthesizers. This allows a modular

synthesizer to be controlled by a midi keyboard, sequencer, or DAW. The Midi2 module has 3 distinct modes of operation set using the switch

on the front panel.

1. Monophonic - (M) Gate2 and CV2 outputs mirror the outputs of Gate1 and CV1. Monophonic mode works great when using a modular as a

single voice synthesizer.

2. Duophonic - (P) The Midi2 module uses the two sets of Gate and CV outputs to allow two notes to be played simultaneously. The first midi

note is sent to the Gate1 and CV1 outputs and the second is sent to the Gate2 and CV2 outputs. Duophonic mode is perfect when working

with a two voice modular synthesizer.

3. Dual Monophonic - (D) Gate 2 and CV2 outputs are controlled by a different midi channel than the Gate 1 and CV 1 Outputs. "Dual

Monophonic mode allows a modular to be controlled by two separate sets of midi data. This mode works well when using a modular as two

single voice synthesizers.

Controls

GT1 Output – Note on = Gate high (+5v), Note off = gate low (0v).

CV1 Output – 1 volt per octave voltage derived from note played on keyboard.

GT2 Output – Note on = Gate high (+5v), Note off = gate low (0v).

CV2 Output – 1 volt per octave voltage derived from note played on keyboard.

Sync Output – Outputs gate based on beat 1 of the incoming midi clock.

Midi Input – Input jack for a standard 5-pin midi cable.

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DNA Symbiotic Waves Module

Description

A powerful 9-bit digital oscillator and waveform processor. A unique dual oscillator system paired with a

comprehensive waveform processing and modulation section. Detailed info available at pittsburghmodular.com/dna-

symbiotic-waves.

Controls

Frequency Control Knob – Adjusts the center frequency.

Fine Tune Control knob – Fine tune frequency adjustment.

Wave 2 Detune Knob – Adjusts the pitch of wave 2 relative to wave 1. Range is 0 to +1 octave.

Wave 1 Select Knob – 16 step waveform selector.

Wave 2 Select Knob – 16 step waveform selector.

Balance Control Knob – Adjust the processor output balance between wave 1 and wave 2.

Balance CV Attenuator Knob – Balance CV input attenuator.

Processor Selector Knob – 16 step processing mode selector.

Processor Controller Knob – Processor mode specific function controller knob.

Processor Controller CV Attenuator Knob – Processor controller CV input attenuator.

1 V/O Input – One volt per octave CV input.

Balance CV Input – Balance CV Input

Control CV Input – Processor control CV input.

Wave 1 Output –: Preprocessor waveform output of Wave 1.

Wave 2 Output – Preprocessor waveform output of Wave 2.

Processor Mix Output – Post processor mix output.!

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Waveforms Module

Description

A wide range, multiple waveform generator. The Waveforms oscillator has a frequency range starting as low as 7 seconds per cycle,

allowing it to double as a voltage controlled LFO.

Controls

Frequency Control – Course frequency setting.

Fine Tune Control - Fine tune frequency setting.

Pulse Width CV Attenuator - Controls the amount of CV used to adjust the pulse width of the pulse wave.

Pulse Width Control - Manually controls the pulse width of the pulse wave.

FM CV Attenuator Control and Input - Frequency modulation CV input and attenuation control.

FM Type - Switches FM response type between linear and exponential.

Blade CV Attenuator Control and Input - Blade wave Y-axis modulation CV input and attenuation control.

1v/o Input - CV input used to track the oscillator at 1 volt per octave.

Reset Input - CV Input used to hard reset the Oscillator on the falling edge of the incoming waveform.

Blade Input - CV or audio rate input used to modulate the blade wave creating a ring mod type effect.

PWM Input - Pulse width modulation CV input. Affects the pulse width of the pulse wave.

Sub Output - Square wave sub oscillator output. Sub Oscillator is 1 lower than the oscillator core.

Sine Output – Sine wave output.

Triangle Output – Triangle wave output.

Blade Output – Blade wave output.

Saw Output – Saw wave output.

Pulse Output – Pulse wave output.!

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