Six-input Quadraphonic Mixer and Joystick Controller - Two space Buchla format
The SQSD combines six joysticks capable of generating control voltage with a six-input
equal-power panning mixer, allowing for intuitive and fun direction of spatial sound in
both stereo and quadraphonic speaker configurations. It's the ultimate hands-on mixer
for electronic musicians looking to take their performances to the next level.
The SQSD is made possible with a collaboration between Kilpatrick Audio and A Yellow Sine. The team consists of:
Patrick McMaster - Composer, performer and electronic music wizard of A Yellow Sine
Andrew Kilpatrick - Conductor of Electricity and founder of Kilpatrick Audio
Each of the six joysticks generate two control voltage signals: one for each axis of
motion. These CV outputs can modulate parameters on compatible voltage-controlled
electronic music equipment. Using the joysticks to control the location of a sound
source is intuitive and fun, and the SQSD makes this easy by incorporating six
channels of quadraphonic panning.
Quadraphonic sound involves the use of four speakers to create an immersive listening
experience in which sounds can move around the listener. It’s the most accessible form
of what’s called spatial or surround sound since it only requires four speakers.
Two dedicated location control inputs are available for each of the six channels. You can
connect control voltage signals from a sequencer, envelope or LFO to these inputs, but the
joysticks make quad panning quick and easy. The twelve joystick CV outputs and location
control inputs are grouped together, and can be easily patched with shorting bars. Convenient
DIP switches on the back of the unit normalize these connections without the need for any patching.
Up to six channels of sound can become part of the quadraphonic or stereo spatial direction,
with each channel having its own dedicated level control and LED indicator light. There’s a main
mix output control as well with LEDs for each of the four outputs.
Notes from the Spatial Direction Coordinator
The stackable nature of banana cables means that a single joystick can perform many actions.
By patching the outputs from one to the location controls of several channels, a single joystick
can spatialize multiple sound sources. Connecting a joystick output to both the location control
input and some other parameter in your system can create a linking of the sound's movement with
another of its features.
One example of this is to send the vertical axis of a joystick to both the location control and
the mix control of a reverb effect. When the sound moves away from one end of the room it becomes
more reverberated. You could additionally use an inverted version of this control voltage signal
to control the frequency cutoff of a lowpass filter, so as the sound source moves away it contains
less frequency content as well, which combined with the increase in reverb amount would simulate
natural acoustic properties of distance.
A simple stereo setup where the horizontal axis controls panning and the vertical axis controls
amplitude or volume is quite intuitive. The horizontal axis might control the index or amount of
frequency modulation applied to an oscillator, while the vertical axis controls the frequency of
the modulating oscillator.
The four outputs of the SQSD don't necessarily have to connect to speakers either. Using the
joysticks to crossfade different sound source inputs allows for complex signal blending. A patch
with just four oscillators signals and two control voltage inverters will allow the SQSD to use
the principles of vector synthesis, uniquely providing simultaneous access to four different
waveform blends at the output mixer.
Features and Specs
Buchla (4U) two space module
Low-noise CV and audio signal path
No digital circuitry used - 100% analog design!
Six channel quadraphonic mixer with voltage control
Six joysticks with X and Y outputs: 0-10V = L>R, 0-10V = S>F
Six quadraphonic constant-power directional panners with voltage control
Internal normalling switches to connect joysticks to directional panners
Directional panners can accept -5V to +5V or 0-10V (DIP switch selectable)
Audio inputs support >10Vpk (>20dBu) max input level
Audio inputs have 0dB/+10dB selectable gain (DIP switch selectable)
Audio outputs support >10Vpk (>20dBu) max output level
Audio input and output signal level indicators (-16dB min. indication)
Audio jacks available as Switchcraft 3.5mm minijack or Tini-Jax®
Banana jacks use Johnson / Cinch banana connectors
High-quality brushed anodized aluminum panel
Requires +15V at 425mA and -15V at 375mA
Dimensions: 8.5" x 7" x 1.9" max depth
Warranty: 1 year
Completely engineered, assembled and tested by Kilpatrick Audio in Canada
Optional: Two space powered Buchla enclosure available - designed and built by Kilpatrick Audio
Price and Availability
Pre-order price: $1750 USD ($2250 USD with powered boat)
This limited edition product is available only directly from Kilpatrick Audio.
Two space powered boat only available bundled with SQSD at time of purchase.
Banana to Minijack Adapter Kit
This kit allows you to connect your SQSD or other banana gear to gear that uses minijacks
for control voltages. The SQSD has internal settings to choose the CV control input voltage
range to make it easier to use with Eurorack and other synths. Available in three colour combinations!
Each kit includes:
5x banana (M) to minijack (F) signal adapters (150mm / 6")