Synthesizers.com Q960

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Q960 Sequential Controller

Sep 2014

The Q960 is an 8 stage, 3 row sequencer with an internal oscillator. Each row can control any volt-

age-controlled module such as an oscillator, filter, etc. A 9th stage provides a place for the se-

quencer to stop. A lamp for each stage indicates when it's active.

The front panel is divided into 3 sections: Oscillator, Stages, and Output. Each stage has 3 knobs

which determine the voltage at the 3 row outputs (A, B, C). The row outputs can be scaled using the

'X' switches (X1, X2, X4). A mode switch for each stage selects Skip, Normal, or Stop. A trigger

(Gate) input signal will select a particular stage, as does the manual push button. A trigger (Gate)

output signal is available when a stage is active.

The oscillator has 6 ranges and a variable control. A lamp indicates when the oscillator is on.

Both manual and Triggers (Gates) can control the oscillator's on/off condition. Voltage control of the

oscillator frequency is also available with an accurate temperature compensated 1V/Octave re-

sponse. An external shift input and manual button provide additional control of stage activation.

Specifications

Panel Size: Single width 17"w x 8.75"h.

Trigger, Shift, Control Input Signals: Fast rising 0-3 volts minimum, active high

Output Voltage Levels: 0 to 8V

Internal Oscillator: .1 to 2Khz +, 1V/Octave Response

External Oscillator Speed: 2Khz maximum

Power: +15V@120ma, -15V@30ma, +5@5ma.

The Q960 Sequential Controller is a recreation of Bob Moog's famous 960 module. Built using modern

components yet retaining the 960's unique functionality including the highly sought-after skip function, 3rd

row timing control, trigger in/out for each stage, etc. The Q960 consumes 8 spaces (17" wide) just as the

Moog 960, and uses the standard Synthesizers.com power supply (+15,-15,+5).

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Summary

Q960 Sequential Controller Introduction

Front Panel Overview

Divides the panel into Oscillator, Stages, and Output sections for control.

Core Functionality

Explains the 8-stage, 3-row sequencer with internal oscillator and timing control.

Controls and Connectors

Oscillator Controls

Covers oscillator lamp, range selection, frequency vernier, on/off controls, and output.

Stage Controls

Details stage lamps, control knobs, mode switches, set buttons, and trigger I/O.

Key Operational Features

Stage 9 and Stop Functionality

Describes the special 'Stop' stage that turns off the oscillator when active.

Row X Output Scaling

Determines the voltage range of the row outputs for scaling control.

Timing Control Switches

Details 3rd row timing and shift input/button controls for sequence timing.

Usage and Patching Strategies

Triggers, Gates, and Envelope Control

Using triggers/gates and oscillator/stage outputs to control generators.

Advanced Patching Techniques

Covers Q961 interface, cross-triggering, and stage timing control methods.

Advanced Configurations and Maintenance

Extended Sequencer Configurations

Describes 24-stage operation, multi-sequencer triggering, and Q128 usage.

Module Calibration and Power

Procedures for calibrating oscillator and voltage reference, plus power connector details.