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Kilpatrick Format Synthesizer


Introducing the Kilpatrick Format

The Kilpatrick format is a new kind of modular synthesizer system for players that demand something better, different and inspiring. Designed by Andrew Kilpatrick, the Kilpatrick format represents a new generation of modular music making by offering the right combination of look and feel, playability, excellent circuit design, and the perfect blend of old and new concepts that make the system easy and fun to use.

Whether you're an experienced synthesist, or looking to get into synthesizers or modular systems for the first time, the Kilpatrick system has something to offer you. The clean design is easy to learn, but also offers experienced users an uncluttered layout that gets right to making great sounds.

Kilpatrick Format Features:

  • 4U (7") panel height - each panel offers close to 30 in. of panel space
  • Simple plug and play module installation - rearranging a system or adding new modules is easy
  • Universal use of banana cables for patching of audio, CV and pulse/gate signals - high quality cables are available in a variety of colors and lengths
  • Color-coded jacks indicate different signal functions and direction
  • Separate analog and digital grounds used for low noise signal returns - plenty of power available for digital modules
  • Total cabinet depth of less than 3" permits table top or rack mounting
  • High quality brushed anodized panels are rugged and feature clean, futuristic graphics
  • All modules and systems are hand-assembled and built-to-order in our downtown Toronto workshop
  • Kilpatrick format products are only available directly from Kilpatrick Audio

Quick Links


Modules

K1 // Mixer Interface


Kilpatrick Format Mixer and MIDI Interface

Combining a compact and capable audio mixer with a MIDI to CV converter the K1 Mixer Interface acts as the central hub of most systems. The AUX send and stereo inputs provide a perfect effect loop for use with the K3 Digital Effects module. Both headphones and line outs are provided with independent volume controls.

A built-in MIDI to CV converter offers many different modes of operation, allowing a MIDI keyboard or computer to control the system.

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K2 // Pitch Oscillator


Kilpatrick Format Analog VCO

A real analog VCO based around a traditional sawtooth core, the K2 Pitch Oscillator generates multiple basic waveforms simultaneously. The PWM section includes both a standard PWM mode and a unique multi-pulse mode for making new timbres. The wave blending section allows voltage-controlled blending between different waveform combinations.

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K3 // Digital Effects


Kilpatrick Format Digital Effects Processor

The K3 Digital Effects module offers two independent digital effects processors in a single module. The REVERB / DELAY section produces high quality stereo reverb and delay effects processed at 24 bit. The ITTI BITTI section produces lo-fi effects to either audio or control voltage signals processed at 12 bit. Effects such as digital multiplication, (ring mod) sample and hold, wave folding and digital distortion are possible.

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K4 // Envelope Modulator


Kilpatrick Format Envelope Generator / LFO

The K4 Envelope Modulator offers four complete channels of modulation goodness in a single module. The first two channels generate envelopes in one of three modes, with voltage control over the up and down times of the envelope. The other two channels generate LFO signals with voltage controlled speed and a wide range gain control. The LFOs can be synced together and produce outputs with configurable phase offsets between them.

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K5 // Filter Amp


Kilpatrick Format Quad Filter / VCA

The K5 Filter Amp is a quad voltage-controlled amplifier (VCA) and low-pass filter (LFP) in a single module. Manual and voltage control of the output level and filter cutoff frequency are provided on each channel. Adjustable filter resonance adds extreme peaking around the cutoff frequency for ultra-juicy bass sounds or pitched percussive sounds.

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K6 // Voltage Processor


Kilpatrick Format Voltage Utility Module

The K6 Voltage Processor is a workhorse utility module. It has audio buffers to convert audio signals to and from the outside world. Add to that four mixers each with dual buffered inputs, gain control, (0-2x gain) normal and inverted outputs and a signal level/polarity LED. It also has two more mixers each with dual buffered inputs and a normal output plus a level LED and a fixed gain of 1x. Finally two buffered pot that can make -5V to +5V for creating manual control voltages, plus a signal switch / swapper which can be either manual or voltage controlled.

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K7 // Entropy Sequencer


Kilpatrick Format Random Sequencer and Analog Noise Source

The K7 Entropy Sequencer takes a unique approach to sequencing. It can be used in programmed mode where steps you program are played by like a standard step sequencer. But in the normal mode the steps are generated from a true analog noise source. Capture some randomness and then loop it. Then edit the steps if you want or seed part of the sequence with new data as the sequencer is playing. Add to that selectable scales and rhythms and a dedicated random pulse output, and you will never get bored. Plus the analog noise source can be used to generate white, blue or pink noise with an adjustable output level.

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// What's next?


New and interesting modules are being developed to add more capabilities to the Kilpatrick Format system. This is a time-consuming process, but we are committed to continuing to add more modules. The next few modules will include: voltage-controllable ADSR, multi-mode filter, a special kind of digital oscillator, and more!

Stay tuned for details!


Systems and Pricing

System #1


Basic Four Space System

A great starter system that can be expanded later. Includes an active enclosure and power supply, four modules and a set of patch cords. Rack ears can be included installed or packaged separately. Please specify your desired configuration when ordering.

System includes the following:

  • K1 Mixer Interface - 1x
  • K2 Pitch Oscillator - 1x
  • K4 Envelope Modulator - 1x
  • K5 Filter Amp - 1x
  • Four Space Active Enclosure - 1x
  • External Power Supply - 1x
  • Assorted Patch Cords - 20x

System Price: $2195

 

System #2


Classic Eight Space System (pictured)

A full-featured system that contains all five original module types, including three oscillators! Includes eight modules, active and passive enclosure, power supply and a set of patch cords. System can be built for table-top use or with rack ears. Please specify your desired configuration when ordering.

System includes the following:

  • K1 Mixer Interface - 1x
  • K2 Pitch Oscillator - 3x
  • K3 Digital Effects - 1x
  • K4 Envelope Modulator - 2x
  • K5 Filter Amp - 1x
  • Four Space Active Enclosure - 1x
  • Four Space Passive Enclosure - 1x
  • External Power Supply - 1x
  • Assorted Patch Cords - 40x

System Price: $4265

System #3


Versatile Eight Space System

A versatile system that includes modules types K1-7, including 2x K2 Pitch Oscillators! Includes eight modules, active and passive enclosure, power supply and a set of patch cords. System can be built for table-top use or with rack ears. Please specify your desired configuration when ordering.

System includes the following:

  • K1 Mixer Interface - 1x
  • K2 Pitch Oscillator - 2x
  • K3 Digital Effects - 1x
  • K4 Envelope Modulator - 1x
  • K5 Filter Amp - 1x
  • K6 Voltage Processor - 1x
  • K7 Entropy Sequencer - 1x
  • Four Space Active Enclosure - 1x
  • Four Space Passive Enclosure - 1x
  • External Power Supply - 1x
  • Assorted Patch Cords - 40x

System Price: $4325


Module / Parts Pricing

  • K1 Mixer Interface - $480
  • K2 Pitch Oscillator - $425
  • K3 Digital Effects - $450
  • K4 Envelope Modulator - $465
  • K5 Filter Amp - $425
  • K6 Voltage Processor - $435
  • K7 Entropy Sequencer - $475
  • KBLANK Blank / Prototyping Module - $45
  • Four Space Active Enclosure - $250
  • Four Space Passive Enclosure - $195
  • Assorted Patch Cord Set - 20 pack (9 colours - 12"-48" lengths) - $150

Note: All prices are in Canadian dollars. (CAD)


Ordering

All systems are hand-assembled and built-to-order in our Toronto workshop. Please contact us with your specific needs and we will offer you a quote and lead-time. We assemble and test the entire system so you should be ready to go as soon as you receive your system. Worldwide shipping is quoted per order.

Please read the manual and all available specifications prior to ordering as all sales are final. We do not accept exchanges or offer refunds as all systems and modules are built from scratch for each customer. This requires significant outlay in parts and labour per system, and we only sell absolultely brand new systems and modules when you order.

Products Available to Order

Currently we are taking orders for complete systems. Want a different combination? Let us know and we can help make a system that is perfect for you. New modules coming soon!

To order please email us with your desired configuration: info@kilpatrickaudio.com


Videos

Synth Demo 2 - Installing Kilpatrick Format Modules

Synth Jam 1 - KFormat Modular

Kilpatrick Format Modular Synth - Demo 1: Quick Overview

Kilpatrick Format Modular Synth - Demo 2: Modules K1-5


Documentation

Module Power Specs

The standard power supply powers 1x active and 1x passive enclosure. (8 module spaces) The maximum current available is approx. +15V @ 20W and -15V @ 10W. (max. 24W combined total on both supplies) A third passive enclosure can be attached as long as the total system power is well within spec.
  • K1 Mixer Interface - +15V: 1.5W / -15V: 1.2W
  • K2 Pitch Oscillator - +15V: 0.75W / -15V: 0.75W
  • K3 Digital Effects - +15V: 0.9W / -15V: 0.3W
  • K4 Envelope Modulator - +15V: 0.75W / -15V: 0.45W
  • K5 Filter Amp - +15V: 1.05W / -15V: 1.05W
  • K6 Voltage Processor - +15V: 1.3W / -15V: 1.3W
  • K7 Entropy Sequencer - +15V: 1.05W / -15V: 0.45W

System Warranty

Kilpatrick Audio will warrant all parts of the system against manufacturing defects for a period of one year from the date of purchase. If you have a problem with a module, contact us and arrange to return it to us for repair. After one year, we will offer low cost service on modules for as long as possible. If you have trouble at any time please contact us and we will do our best to help you. No warranty is offered for damage caused by the end user or other equipment.

Note: This warranty applies to Kilpatrick format products and takes precedence over our general warranty policies in the case of any differences.

Kilpatrick Format Usage

The Kilpatrick Format is unique to Kilpatrick Audio, but we want to make information available to other manufacturers and DIY hackers so they can build high quality modules that work with the Kilpatrick system.

We are working on a spec which will be available free of charge for both commercial and non-commercial use. This will be released once we get some systems out there and have time to document all the little details!