10. June 2025

JET

Bthelick Takes on the Reese Bass Revelation

Bthelick dives headfirst into the synth world, unraveling the mysteries of a classic bass sound in his latest video. Ever wondered how a single-oscillator Juno can muster that wobbly Reese magic? Grab a pint and settle in for a tale of technical wizardry and musical epiphanies.

A Confession from Bthelick

Bthelick kicks off his latest video with a confession, admitting he was wrong about a key detail in crafting the iconic Reese bass sound. He had previously explained this wobbly, unstable sound as an interference pattern generated when multiple frequencies align imperfectly, resulting in a phenomenon known as ‘beating.’ Yet, he admits his claim about the use of the Roland Juno synth was incorrect. In his original video, he suggested emulating a Casio phase distortion synth using detuned saw waves on a subtractive synth like the Juno. However, his followers pointed out that the Juno couldn’t detune oscillators since it only had one.

The Mechanics of Misunderstanding

As Bthelick delves deeper, he explores why his previous understanding was not quite right. The Roland Juno, unlike most analogue synths of its time, had a DCO (Digitally Controlled Oscillator) instead of a VCO (Voltage Controlled Oscillator), eliminating the need for tuning adjustment due to stable pitch. With his signature knack for unraveling musical mysteries, Bthelick explains how most synths of the era required manual tuning adjustments to compensate for thermal drift—a quirk not needed with the Juno’s design. His previous oversight, attributing re-phasing capabilities to the Juno, overlooked the single oscillator with a sub-oscillator operating in a locked octave, essentially static and unable to achieve the detuned sound associated with the Reese bass. The revelation here is crucial, as it highlights a fundamental aspect of synth history and design.


The Juno’s Secret Weapon

Bthelick uncovers a rabbit hole of discovery involving the Juno’s secret weapon: Pulse Width Modulation (PWM). Previously forgotten in his exploration, he reveals PWM as the key to achieving dynamic sound variation without traditional detuning. Unlike most synths, the Juno allowed modulation of the pulse width not only on square waves but also on saw waves. This capability was rather uncommon and was the Juno’s unique twist, mirroring phase distortion techniques used in the original Reese creation. Bthelick marvels at this feature, recognising it as a form of phase distortion, echoing back to the roots of its sound inspirations. His video provides a platform for exploring the underappreciated modulation landscape of synth design, proving once again his commitment to deepening the understanding of electronic music production.

Chasing the Detune Mystery

In an engaging twist, Bthelick proposes a fascinating hypothesis about why PWM might hint at detuning characteristics. By leveraging the Doppler effect as a metaphor, he hypothesises that phase manipulation might trick the brain into perceiving a detuned quality in the sound. As sounds modulate in phase, they might appear to move closer or farther, akin to how passing cars alter pitch perception with their speed – not from an inherent pitch change but the relative motion. Bthelick’s educated guess suggests that the brain’s interpretation of these harmonics as varied in pitch could be the answer. While he navigates this complex soundscape, he invites viewers to join him in pondering this mystery, displaying his characteristic blend of curiosity and technical insight.


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