Malekko Quad LFO User manual

QUAD LFO MANUAL V.1
814 SE 14TH AVENUE
PORTLAND OR 97214
USA
www.malekkoheavyindustry.com

TABLE OF CONTENTS
QUAD LFO MANUAL V.1
SPECIFICATIONS 1
INSTALLATION 2
DESCRIPTION 3
CONTROLS 4-6
USING QUAD LFO WITH VARIGATE 8+ AND VARIGATE 4+ 7
WARRANTY 8

SPECIFICATIONS
FORMAT:
EURORACK
DIMENSIONS:
12HP, 26mm deep
INTERNAL AND EXTERNAL SIGNALS (3.5mm jacks):
0-5V Logic I/O
MAX CURRENT:
-12V 17mA
+12V 85mA
+5V: n/a
PG. 1
QUAD LFO MANUAL V.1

INSTALLATION
QUAD LFO MANUAL V.1
RED STRIPE DOWN
Remove module from packaging.
Power down your modular synthesizer and disconnect the power cable from
the wall outlet.
Attach the included power cable to the module’s power connector and connect
the other end to the power distribution bus in your EuroRack synthesizer case.
Position the red stripe DOWN on your Quad LFO.
Position the module on the mounting rails in your EuroRack case and screw
down mounting screws. Power up! If your case does not turn on properly then
you have installed the module incorrectly. Simply power down and make sure
to follow the diagram when reconnecting the module.
PG. 2

An LFO, or low frequency oscillator, sends control voltage out in the shape of a waveform. The Quad LFO available shapes
include sine, ramp, saw and pulse and moves through these shapes using the SHAPE slider. You can send these 4 distinct
LFOs directly out or to other modules for frequency modulation, VCA control, filter control, etc.
What makes this Quad LFO module different is that it also includes a 16 step automation sequencer as well as autosave or
expanded preset functions when used in conjunction with Varigate 4+ and Varigate 8+.
To create a sequence of automation for an LFO, hold the RECORD button and move the sliders for Frequency, Phase, Shape,
Distort and Level and those slider movements will play back automatically as the Quad LFO cycles through the sequence.
This sequencing feature allows for a multitude of dynamic possibilities for live performance and recording.
Set each LFO to trigger via one of the 4 individual gate inputs, or set channels 2 through 4 to follow channel 1 for quadrature
and phase modulation. Change the direction of each channel of sequenced automation to Forward, Reverse, Pendulum or
Random. Switch the playback speed and style between Fast, Slow or Tempo Sync. There are also inputs for both Clock and
Reset.
Features include:
- 4 LFOs, each with it's own individual output
- 16 steps of automation recording for LFO settings per channel (+ Clear Automation function)
- Fold, Bit Crush and Noise distortion
- Set each LFO to trigger via one of the 4 gate inputs
- Forward, Reverse, Pendulum and Random switch for sequenced automation direction per LFO
- Follow Mode (Quadrature)
- LFO level control
- LFO waveform control
- Frequency control
- Phase Control
- Autosave stand-alone or save up to 16 presets with Varigate 4+ and 100 with Varigate 8+ via busboard
- Switch between Fast, Slow or Tempo Sync per LFO
- Clock in
- Reset in
QUAD LFO MANUAL V.1
DESCRIPTION
PG. 3

LFO OUTPUT CHANNELS 1-4:
Connect your patch cables from these outputs to other
module CV inputs to modulate them with the QUAD
LFO. There are a total of 4 individual LFOs/outputs, each
with an LED indicating output is active.
CLK IN:
External CLOCK INPUT. Clock input is required for the
animation sequencer to run. Clock is also received from
a Varigate 8+ or 4+ if connected to the same busboard.
Incoming clock also controls LFO tempos set to TEMPO
MODE (see pg.5).
RESET:
Gate input for resetting to step 1 of the animation
sequencer.
- Forward, Pendulum, Random reset to step 1.
- When in Reverse, resets to step 16.
GATE INPUTS:
Each LFO can be re-triggered/restarted with an
individual gate (or cycle without a gate input).
FORWARD/REVERSE/PENDULUM/
RANDOM SWITCH:
Switch to change the direction of sequenced,
automated recording of an LFO. To enable a particular
direction for each of the 4 LFOs, press an LFO channel
select button and then move the switch.
LED BAR GRAPH:
Displays the sequence direction. Each step will pulse
twice for a total of 16 steps.
LFO PARAMETER SLIDERS:
Each of the 4 LFOs include their own set of parameters
that can be adjusted with the sliders. Select LFO buttons
1-4 and then move the sliders to adjust FREQUENCY,
PHASE, SHAPE, DISTORT and LEVEL per LFO.
CONTROLS
QUAD LFO MANUAL V.1
PG. 4

CONTROLS
QUAD LFO MANUAL V.1
PG. 5
FREQUENCY:
Sets the frequency of an LFO.
PHASE:
Sets the phase of an LFO.
- Start point from 0 degrees to 360 degrees
SHAPE:
Moving this slider left to right will morph the shape of
the LFO from:
SINE - RAMP - TRIANGLE - SAW - PULSE
(10 to 90% pulsewidth).
DISTORT:
Moving this slider left to right will change the type of
distortion applied to an LFO:
FOLD - BIT CRUSH - NOISE
LEVEL:
Adjust the level of an LFO output.
The LEDs to the right of these sliders indicate the
position of the slider (brightest red for sliders set all the
way to the right).

QUAD LFO MANUAL V.1
CONTROLS
PG. 6
LFO 1-4 CHANNEL SELECT BUTTONS:
To select an LFO for parameter editing, press one of these
buttons. The active LFO LED will now be lit and you can now
start dialing various settings. To switch to another LFO, push
another one of the buttons and so forth.
RECORD:
To record parameter automation in a sequence for an LFO,
select the LFO channel button you want to record sequenced
automation so that it is lit, then hold the RECORD button
while you move the sliders. Make sure you are already
receiving incoming clock or this feature will not work
otherwise. Now you can change the direction of the
sequence as well by adjusting the sequence direction switch.
CLEAR:
Holding CLEAR while moving sliders will clear existing
automation recording for that specific control. Holding CLEAR
while pressing a channel select button will clear all automation
for that channel.
FAST/SLOW/TEMPO SPEED SWITCH:
Set each LFO to either FAST, SLOW or TEMPO (clock based)
cycling. Each of the 4 LFOs can have a different speed setting
via this switch. FAST and SLOW modes will ignore incoming
clock. The LEDs under the switch represent position.
Frequency Ranges:
Fast Mode: 1hz to ~2khz
Slow Mode: ~3 seconds to 1hz
Tempo Sync Mode: 64 clock pulses per cycle (or 4 bars) to 1
clock pulse per cycle (1/16th notes).
TRIGGER:
To set an LFO to trigger a one-shot cycle of a waveform, first
make sure you have an external trigger source connected to
gate inputs 1-4, select an LFO button and then press TRIGGER.
FOLLOW:
To enter FOLLOW MODE (LFOs 2 thru 4 can follow LFO 1 and
their individual phases can be adjusted to create quadrature),
select LFO buttons 2-4 and then the FOLLOW button. SMOOTH AND “STEP” FUNCTIONS:
The Quad LFO automation sequences are set to
SMOOTH by default (we’ve added a bit of slew to these
transitions so that they are seamless). However if you
want the transitions to be more abrupt for a particular
LFO animation sequence, hold the RECORD button while
pressing one of the LFO channel select buttons. You will
now see the sequence steps on LED bargraph pulse in a
more step like manner.

QUAD LFO MANUAL V.1
USING THE QUAD LFO WITH THE VARIGATE 8+
OR VARIGATE 4+
PG. 7
LFO 1-4 CHANNEL SELECT BUTTONS:
When connected to the same power bus, the Quad LFO will receive incoming clock from the Varigate 8+ or Varigate 4+ over the bus
(there is no need to connect a clock input to the front of the Quad LFO).
Using the Quad LFO in tandem with the Variage 8+ also enables you to save up to 100 Quad LFO presets. To save presets simply
hold SAVE and then press one of the Gate channel select buttons on the Varigate 8+ (just as you would normally save a preset on
the Varigate 8+). To recall those presets, hold RECALL then select one of the Gate/preset channels on the Varigate 8+.
Using Quad LFO in tandem with the Varigate 4+ enables up to 16 Quad LFO presets. Follow the same instructions as outlined for
the Varigate 8+.

WARRANTY
QUAD LFO MANUAL V.1
PG. 8
This product is covered by the Malekko Heavy Industry warranty, for one year following the
date of purchase. This warranty covers any defect in the manufacturing of this product. This
warranty does not cover any damage or malfunction caused by incorrect use such as, but not
limited to, power cables connected backwards, excessive voltage levels, or exposure to
extreme temperature or moisture levels. The warranty covers replacement or repair, as
decided by Malekko Heavy Industry. Please visit our website malekkoheavyindustry.com to
obtain full warranty information and to register your product for coverage.