The Stereo Dipole is a versatile Quad Multi-Mode Voltage-Controlled Filter (VCF) offering single, dual, and quad peak filter outputs.

This module is designed to be both clean and characterful, without targeting a specific sound. It excels in applications ranging from clean frequency-based panning to complex phasing, formant synthesis, and overdriven, squelchy bass lines. Simple yet powerful, the Stereo Dipole provides a user-friendly interface while encouraging sonic experimentation and exploration.

Key Features: Dual Identical Filter Sections:

Operable independently or together using dedicated controls: RES: Resonance FREQ: Primary Cutoff SPREAD: Secondary Cutoff Central controls for stereo functionality: STEREO FREQ: Stereo Cutoff STEREO RES: Stereo Resonance Filter Outputs: Each channel (Left and Right) offers:

Single Peak (POLE) and Dual Peak (DIPOLE) outputs Switchable High Pass, Low Pass, and Band Pass outputs located above the POLE and DIPOLE controls. Routing Flexibility:

The Dual Peak DIPOLE output can be routed in Series or Parallel with the main POLE VCF, enabling a wide range of configurations: 24dB/OCT HP/BP/LP Variable-width Band Pass Notch filtering Unique and experimental filter combinations Control Parameters:

FREQ: Adjusts the cutoff for both primary and secondary filters. SPREAD: Matches or offsets the secondary cutoff frequency by +/-5 octaves. Advanced Outputs:

DIPOLE AB: A Quad Peak Monophonic Output with shared routing and topology options for the four VCF cores. The A input (Left) normalizes into the B input (Right), creating stereo imaging from a monophonic source. Pre-Filter Input DRIVE:

Soft-clipping and saturation controls on each channel add harmonic content and enhance low-end richness. Even a sine wave can be overdriven for warm, musical results. Resonance Control:

Ranges from subtle to full self-oscillation across 20+ octaves. Oscillator and LFO Capabilities:

All VCF cores track 1V/OCT and are temperature-compensated, enabling use as single, dual, or quad sine wave oscillators or LFOs. Series routing expands tonal oscillation options via DIPOLE and DIPOLE AB outputs. CV Inputs and Attenuation:

Individual and stereo CV inputs for STEREO RES, RES A/B, and STEREO FREQ. Polarizing attenuators for FM CV inputs on each channel. SPREAD CV inputs allow direct and accurate 1V/OCT control of secondary peaks. Visual Feedback:

RGB LEDs display cutoff frequency and resonance positions. Build Quality:

Reverse power protection Soft-start power-on system High-fidelity components The Stereo Dipole is a dynamic tool that caters to intricate sound design, offering unparalleled flexibility for both mono and stereo applications.

• 20 HP 23 mm deep

DualStereo Filter Oscillator Panning PhaseShifter

Includes original box.

Found Sound Australia Pty Ltd.
110 Albert St
Brunswick East, VIC 3057
Australia