ARWAVE
Streamlined wavetable synthesis
RM01
The legendary Oberheim RM-1B Ring Modulator (1972), faithfully emulated.
Classic Oberheim-Style Ring Modulator
€49.99
RM01
The legendary Oberheim RM-1B Ring Modulator (1972), faithfully emulated.
Classic Oberheim-Style Ring Modulator
€49.99
Previews
NIVIEM RM01 is a component-level emulation of the legendary Oberheim RM-1B Ring Modulator (1972). The plugin reproduces every block of the original October 1972 schematic — the 1458 dual op-amp input buffer, the 741 Wien-bridge sine oscillator stabilised by two 1N746 zener diodes, the MC1495 four-quadrant Gilbert-cell multiplier with its asymmetric per-axis saturation (18 kΩ X / 47 kΩ Y), the 1458 linear-squelch envelope gate with its 1N4148 rectifier, the DC-blocking high-pass, and the output buffer running on regulated ±12 V / ±15 V rails. Modern Niviem extensions layer on top: four stereo topologies (Dual Mono, True Stereo with independent right-channel carrier, Mid/Side, Mono), Sine + Triangle carriers, host tempo sync at 13 note divisions, five oversampling depths up to 16×, Hardware Accurate master mode, pickup load simulation (Single Coil / Humbucker / P90), and a six-tab analyser display. 35 factory presets across 11 categories. Built-in 60-entry Nivipedia encyclopedia. ADAA-1 antiderivative anti-aliasing on every nonlinear stage.
What RM01 offers
Authentic Gilbert-cell topology with asymmetric per-axis saturation (18 kΩ X / 47 kΩ Y) from the original schematic — the carrier and signal paths saturate on different curves, giving the cell its characteristic even-harmonic colour rather than the mathematically clean product a digital multiply produces.
Phase-accurate digital model of the original 741 op-amp Wien-bridge oscillator, amplitude-stabilised by two 1N746 zener diodes modelled as tanh soft-clip. Kahan-compensated double-precision phase accumulator keeps the oscillator drift-free over multi-hour sessions even at sub-1 Hz carrier frequencies.
Both the multiplier's tanh saturation and the carrier oscillator's zener-knee shaping are processed with first-order ADAA — aliasing artefacts from the waveshaping are suppressed before they can fold back into the audible band. Five oversampling depths (Off / Eco / Standard / High / Ultra — 1× to 16×).
Dual Mono (authentic mono fold copied to both channels), True Stereo (an independent free-running carrier on the right channel for a genuinely decorrelated image), Mid/Side (ring-modulates the centre and leaves the sides dry), and Mono (a strict L+R sum fold).
A single switch that swaps every voiced signal-path stage for its schematic-true equivalent — MC1495 makeup gain dropped, asymmetric Gilbert-cell axis saturation engaged, 1N746 zener knee sharpened, 1458 input-buffer slew limit applied. The original 1972 RM-1B voice in one click.
Host tempo sync at 13 note divisions (1/1 down to 1/128), pickup load simulation (Single Coil / Humbucker / P90), linear squelch envelope gate, vintage character knobs (carrier feedthrough, soft saturation, DC offset, component drift), six-tab analyser display (scope / spectrum / waterfall / Lissajous / tuner).
What’s new
- Initial v1.0.0 release
1.0.0
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