Pittsburgh Modular Foundation 3.1 Manuale utente

PITTSBURGH MODULAR

FOUNDATION 3.1 and 3.1+

SYNTHESIZER

MANUAL AND

PATCH GUIDE

1

Important Instructions – PLEASE READ

Read Instructions:

Please read the Foundation 3.1 Synthesizer manual completely before use and retain for future reference.

IMPORTANT Ribbon Cable Power Information:

The Foundation 3.1 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 Foundation 3.1 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 Foundation. 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.

2

Table of Contents

Important Instructions ………………….…… 2

Table of Contents …….…….…………….…… 3

Case and Power Specifications ………….… 4

Foundation Package Contents………….…… 4

An Introduction to Modular Synthesis….… 5

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

Individual Modules ……………………..… 7-19

Patching a Modular Synthesizer ……..…. 20

Patch Guides …………………….….…… 21-38

Installing Modules……………..……….…… 39

Trimming Plastic Blank Panel….…….…… 40

1 Year Limited Warranty……………….…... 41

Service and Other Information ….….…… 42!

3

Case and Power Specifications

Foundation 3.1 Package Contents

1x Foundation 3.1 Modular Synthesizer

1x Pittsburgh Modular Patch Cable Kit

1x External Power Adapter

Foundation 3.1 Move [104] Case and Power Supply Info

External Dimensions Including Removable Lid: 23.5” x 6.25” x 7”

104hp Move [104] Black Eurorack Case

Sliding Square Nut Mounting System with 20 Nuts Per Rail

External Power Adapter Connection: 2.1mm Barrel Type

External Power Adapter Output: 12V-15V AC / 2000mA

Foundation 3.1+ Move [208] Case and Power Supply Info

External Dimensions Including Removable Lid: 23.5” x 12” x 7”

208hp Move [208] Black Eurorack Case

Sliding Square Nut Mounting System with 20 Nuts Per Rail

External Power Adapter Connection: 2.1mm Barrel Type

External Power Adapter Output: 15V DC / 4000mA

4

An Introduction to Modular Synthesis

A complete, fully modular analog synthesizer, the Foundation 3.1 is

a modern version of the great 1970's monosynths, conveniently

broken down into individual components with no hardwired signal

flow to restrict experimentation. Oscillators, mixer, filters, envelope,

VCAs, etc., are all individual modules.

Because each module performs a single function, without patch

cables the Foundation will not produce sound. A synthesizer voice

must first be patched up using cables to wire modules together. The

Foundation 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.

5

Modular Signal Paths

The Foundation 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 Waveforms oscillator, LFO running at audio rate,

or the Filter in oscillator mode. 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 Midi 3 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 Midi 3 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 Foundation.!

6

Individual Modules

The Foundation is a collection of 13 modules that will allow you to create complex analog sounds. The modular nature of the Foundation allows for deep

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

7

Midi 3 Module

Description

A midi to cv module converts standard midi note messages into the analog control voltages used by modular and other analog synthesizers.

This allows the synthesizer to be controlled by a midi keyboard, sequencer, or DAW. The two CV outputs on the Midi 3 can be used to control

the pitch of an oscillator, cutoff frequency of a filter, or any other function that requires a control voltage signal. The set of Gate outputs on

the Midi 3 can be used to trigger envelope generators or other modules expecting a gate or clock source.

The Midi 3 is our third generation Midi to CV converter packed with a robust list of features. It includes the most complete set of mono and

duophonic midi response modes available in a eurorack module, assignable CC and dedicated velocity outputs, a feature rich clock source

with tap tempo, midi and external gate clock dividers, and multiple arpeggiator responses.

The Midi 3 is a deep module that can not be covered completely in the small amount of space allotted in this manual. Please download the

standalone Midi 3 manual for a complete detailed description of all the features and settings. The Midi 3 manual is available for download

from the Midi 3 web page. http://pittsburghmodular.com/midi3/!

8

Waveforms Module x2

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.!

9

LFO2 Module

Description

A dual low frequency oscillator module. It uses two different types of low frequency oscillator circuits to provide a variety of CV and audio

rate modulation options. The top LFO utilizes rate and symmetry controls to generate shifting waveforms. Adjusting the symmetry control

varies the shape of the TRI output waveform from a saw tooth to triangle to ramp wave. The symmetry control also adjusts the pulse width

of the SQR wave output. The bottom LFO is a simple triangle based low frequency oscillator with rate control over the triangle and square

outputs.

LFO 1 Controls (top)

Rate Control – Coarse frequency setting.

Symmetry Control – Modify the shape of the waveforms.

TRI Output – Saw / Triangle / Ramp wave output.

Range Switch – Switches the frequency range.

SQR Output – Square / Pulse wave output.

LFO 2 Controls (bottom)

Rate Control – Coarse frequency setting.

TRI Output – Triangle wave output.

Range Switch – Switches the frequency range of LFO 2.

SQR Output – Square wave output.

10

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