Klavis Twin waves User Manual

Voltage-controlled dual oscillator

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Twin waves
Voltage-controlled Dual Oscillator - User manual

Introduction

The driving idea behind the Twin waves Voltage-controlled Dual Oscillator/LFO module is to offer
two interesting oscillators in a skiff-friendly and compact size. To achieve that challenge, we built
the product's architecture on the concept of pre-defined algorithms, where the most useful
configurations and their matching parameters are ready to use.
Twin waves
DUAL OSCILLATOR
Coarse
Osc 2
LFO/AM
Fine/
Level
Qtz/Clk
Parameter
Sync
Algo
V.Oct 1
Sync/Clk
V.Oct 2
Param 1
FM/AM
Param 2
Out 1
1
Out 2
Klavis
Klavis
VCDO

Features at a glance

Two oscillators independently set as VCO or LFO
Features in VCO mode:
o V/Oct tracking over 10 octaves
o Through zero and linear FM
o Sub-octave output
o Hard & soft synchronization
o VCA control and CV algorithm selection
o Quantizer with various scales
o Algorithm-based synthesis to choose among:
Features in LFO mode:
o Simultaneous signal and trigger outputs
o External wave synchronization
o Clock controlled rate with multiplier and divider
o CV and knob control of output level
o Algorithm based wave engine with a selection of:
Display with contextual icons and instant reminder help text
LEDs indicating potentiometer vs. value matching, switch
settings and output levels
Automatically saved settings for instant recall at power on
Firmware update via a simple audio file
Twin waves
user manual V1.7
Wave shaping
Phase modulation
Phase positioning of multiple waves
5 stacked oscillators in tunable unison
Self-sync with phantom oscillator
Additive synthesis (7 waves)
Variable bit reduction (bit-crushing)
Ring modulator with its own 2
Noise with LPF, BPF, or resonant VCFs
Wave shaping
Phase modulation
Random levels and vectors (also Brownian)
Randomly spaced triggers and waves
nd
oscillator
Page 1 of 19

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Summary of Contents for Klavis Twin waves

  • Page 1: Introduction

    Voltage-controlled Dual Oscillator - User manual Introduction The driving idea behind the Twin waves Voltage-controlled Dual Oscillator/LFO module is to offer two interesting oscillators in a skiff-friendly and compact size. To achieve that challenge, we built the product’s architecture on the concept of pre-defined algorithms, where the most useful configurations and their matching parameters are ready to use.
  • Page 2: Table Of Contents

    YNC BUTTON FM/AM & L ..........................16 JACK EVEL KNOB ............................16 SQUARE JACK SUMMARY OF BUTTONS USE ..........................16 ............................. 16 INGLE BUTTON USE ............................... 16 UAL BUTTON USE Klavis Twin waves user manual V1.7 Page 2 of 19...
  • Page 3 MODE ..............................18 IS STUCK ............................18 TRACKING IS ODD SPECIFICATIONS ..............................19 ............................... 19 ECHANICAL ................................19 UPPLY ..............................19 NPUT OUTPUT ................................19 IGNALS ..............................19 ACKING LIST Klavis Twin waves user manual V1.7 Page 3 of 19...
  • Page 4: Installation And Security

    Double check that the connectors are fully inserted and correctly oriented before switching on the power supply. In case of an anomaly, switch off the power supply immediately and check everything again. Klavis Twin waves user manual V1.7 Page 4 of 19...
  • Page 5: Firmware Update

    The product can be updated by playing an audio file such as “TwinWaves_1.00.wav”. Procedure  Connect a mono or stereo cable between your audio playing device headphone output and the Twin waves FM/AM input.  Prepare to play the audio file ...
  • Page 6: Finding Your Way Around The Panel

    LEDs are somehow shared, in fact, virtually duplicated. (There is a however a setting to allocate the V.Oct inputs with added flexibility) Section 1 controls and jacks Section 2 controls and jacks Twin waves Twin waves Twin waves DUAL OSCILLATOR...
  • Page 7: Controls Overview

    Controls overview VCO & LFO Each section of the Twin waves can do more than a typical VCO or LFO. We use the VCO and LFO terms as generic names to categorize the functions into Audio generation and Modulation generation. In this manual we use the VCO and LFO terms even when dealing with features which are neither VCO nor LFO, such as filtered noise (VCO) or random vectors (LFO).
  • Page 8: Vco

    These are realized within a single section. In other words each oscillator section will generate more than one oscillator wave at once. The two sections in the Twin waves are totally independent in this regard, so both can simultaneously use a multiple oscillator algorithm if wished.
  • Page 9: Vco Algorithms Table

    Filter resonance Noise bandpass Noise + BPF Band width Filter Bandwidth Noise resonator Noise + APRF Filter gain Quality factor Any combination of algorithm is possible between the two oscillators. Klavis Twin waves user manual V1.7 Page 9 of 19...
  • Page 10: V/Oct Input Jacks

    The LFO/AM LED stays off; the Algo LED is flashing once every two seconds. The BZX-FM mode is inoperative with Unison, Self-Sync and Noise algorithms. Klavis Twin waves user manual V1.7 Page 10 of 19...
  • Page 11: Synchronization - Sync Button

    Keep in mind that the sync jack being shared by the two oscillators you have to enable/disable its use in the adequate section. Since you have a pair of oscillators in Twin waves, you can connect the output of the second oscillator to sync the first one via a patch cable in the sync jack.
  • Page 12: Quantizer - Qtz/Clk Button

    Quantizer base note This setting is to make the Twin Waves Quantizer match the degree of a voltage source (sequencer, keyboard, …) that generates its V/Oct CV according to predefined notes. Suppose a keyboard that gives 1.25V when playing C1; if you apply a quantizer that expects voltage for C being 1V, the notes allowed by the quantizer scale will not match the ones on the keyboard’s keys.
  • Page 13: The [Square] 1 Jack

    The need arises when melodic CV generators do not play what they should when passed through a Twin Waves quantizer. This is because the scale of the CV generator is already defined as a set of voltages whose “Root note/voltage” is higher/lower than the one the Twin Waves expects at its V/Oct input.
  • Page 14: Lfo

    Aperiodic signal algorithms The Twin waves’ LFOs offer algorithms where the duration between events is irregular. This is what is called aperiodic signals. The parameter knob and jack control the degree of timing randomness, from perfectly cyclic to widely irregular.
  • Page 15: V/Oct Input Jacks

    The default use of an LFO is to be the master of its rate. The rate is controlled by the Coarse knob. Alternatively, the Twin waves LFO can be synchronized to an external clock or any periodic trigger/gate signal. Moreover, it is possible to define a ratio between that external cyclic signal and the actual rate of the LFO.
  • Page 16: Synchronization - Sync Button

    Lock/unlock the tuning pots in the current VCO Dual button - before powering on Combo Function Osc 2 + Sync Prepare for firmware update LFO/AM + Qtz/Clk Reset to factory default settings Klavis Twin waves user manual V1.7 Page 16 of 19...
  • Page 17: Summary Of Led Indications

    Beware that this indication is independent from the actual amplitude of the signal coming out of the jack! The Sqr1 blue LED follows the signal coming out: off = -5V, on = +5V Klavis Twin waves user manual V1.7 Page 17 of 19...
  • Page 18: Troubleshooting

    VCOs play according to strange transpose relation. V/Oct setting is put to added or offset. See chapter: V/Oct input jacks  You have engaged some unusual quantizer scale. See chapter: Quantizer – Qtz/Clk button Klavis Twin waves user manual V1.7 Page 18 of 19...
  • Page 19: Specifications

    Twin Waves module  4x M3 black mounting screws + washers  Eurorack-compliant 16pin supply cable  Quick setup otice Klavis products, including PCBs and metalwork, are designed and manufactured in Europe. Klavis Twin waves user manual V1.7 Page 19 of 19...

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