I have always held an interest in sound and environment. Over the years, I have built several different pieces of audio equipment for my projects, and they are documented on this page.
Stereo/octophonic digital-analogue converter (In progress)
I am working on creating a digital-analogue converter (DAC) with the ability to output up to 8 channels of audio. The DAC will be housed in a Hi-Fi 2000 Slim line 2U case with 10mm thick aluminum front panel and a custom design.
- Digital inputs via USB, AES/EBU, S/PDIF and TOSLINK
- Up to 8 channel outputs via XLR or RCA connectors
- 120/240 VAC filtered power input
- Digital LCD display and input switching
- 1/4" TRS headphone output on front
- HiFiDUINO graphical controller
- exaDevices exaU2I USB to I2S interface - allows input of digital 384 kHz and 352.8 kHz multichannel DXD audio in full 32-bit resolution from a PC to a DAC
- Twisted Pear Audio Buffalo III 8-channel DAC module - features direct DSD, I2S and S/PDIF inputs supporting up to 32-bit/192kHz
- Custom-made 2-to-8-channel switching board - I designed this board to switch between 8-channel operation and stereo operation. In stereo mode, pairs of channels are tied together.
- 5x Twisted Pear Audio IVY-III I/V stages - four boards handle 8-channel output, the fifth board handles stereo output
- 4-Channel S/PDIF & AES/EBU level converter handles the digital inputs
- AMB Laboratories σ22 dual-rail regulated power supply and σ11 single-rail regulated power supply
- AMB Laboratories ε24 power switch driver circuit and σ24 power transformer board
- Hammond 185D20 43VA 10V 4.4A & 185D36 43VA 18V 2.4A power transformers
- Corcom P series filtered power entry module
Millett MAX headphone amplifier
The Millett MAX is a headphone vacuum tube amplifier. I built the case with my grandfather using pine from my family farm in Silver, Manitoba. The Tyndall stone top comes from a local quarry in Garson, Manitoba.
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PIMETA v2 headphone amplifier
The PIMETA v2 is a small, portable headphone amplifier. A rechargable 9V battery inside provides portability, and is rechargable. Using a Hammond case, I made custom metal-etched covers for the front and back. The amplifier also had a modified Linkwitz crossfeed circuit to adjust the blending of the left and right audio channels.
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Khozmo Acoustic attenuator
After owning a early version of the DacMagic Plus that did not have a volume control, I decided to use a Khozmo Acoustic six-channel stepped attenuator to fix the problem. I used a Hammond case with custom-made etched front and back panels as a housing.
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Octophonic speaker design
In 2010 I worked in collaboration with fellow student Aaron Simoes in the research, design, and construction of an octophonic speaker system for University of Manitoba architecture professor Patrick Harrop. We analysed an existing octophonic sound system of Dynaudio AIR 20 monitors at the Black Box research space at Concordia University in Montreal to get an idea of the sonic requirements of the project. (Further experimentation in this space is documented in the Ultrasonic Architecture II: Montreal project.)
The finished test unit incorporated a variety of design tweaks, notably a dual-driver cabinet with material dampening wooden fins to guide the sound output. We constructed ten speakers in total - eight for the octophonic system and two for an additional stereo set. An octophonic envelope follower was also designed to accompany the speaker system.