4ms QCD Expander Handleiding

4ms Niet gecategoriseerd QCD Expander

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QCD Expander

from 4ms Company

Eurorack Module User Manual

The QCD Expander from 4ms Company is an expansion module for the Quad Clock Distributor (QCD). The QCD

Expander requires the QCD to function, and adds a host of features. The Expander turns the QCD into a

programmatic non-linear sequencer, easily obtaining self-patched evolving rhythms, and swing/shuffle patterns.

Each of the four channels has:

•Multi-mode output jack INV OUT mirrors the tempo of main QCD output

•Mode Switch for each INV OUT jack:

◦Delayed Trigger Mode

◦Inverted Gate Mode

◦Shuffle Mode (delayed + original trigger)

•PW/Delay knob controls trigger delay time on INV OUT jack (or pulse width in Inverted Gate Mode)

◦Also controls Pulse Width of main QCD OUT jack

◦CV input jack for external control

◦Attenuverter allows for one channel to precisely modulate another channel's delay or pulse width

•Div/Mult CV attenuator knob

◦Controls how much the signal on the main QCD's Div/Mult CV jack will modulate the tempo

◦Useful for precisely modulating the speed of one channel with another

A global LED brightness trimpot is accessible from the front panel.

DOWNLOAD MOST RECENT MANUAL AT:

http://4mspedals.com/qcd.php

Basic features:

•Connects to QCD module with a 16-conductor ribbon cable (included)

•When connected to a QCD, the following features are added to each QCD channel:

◦Multi-mode clock output (INV OUT) is the same tempo as the QCD's OUT jack

◦Switch for selecting mode of the INV OUT jack:

▪Delayed Trigger mode (left)

▪Inverted Gate mode (center)

▪Shuffle mode = delayed + original trigger (right)

◦Knob for controlling amount of trigger delay, as well as pulse width of the main QCD output

◦CV jack for controlling trigger delay and pulse width using another channel or external CV

◦Attenuverter knob for Gate PW/Trig Delay CV jack (controls the amount the signal on the jack effects the

PW/Delay)

◦Attenuverter knob for Div/Mult CV jack (on the main QCD module)

•LED brightness can be adjusted from the front panel

Controls and jacks:

•INV OUT jack (each channel)

•+5V trigger (10ms) or +5V gate output. See Mode Switch, below

•Runs at the same Div/Mult tempo as the main QCD output, but may be delayed, inverted and/or shuffled.

•Three-position Mode Switch (each channel)

•Only effects the INV OUT jack on the Expander (no effect on the main QCD output)

•Left = Delayed Trigger mode

•Center = Inverted Gate mode

•Right = Shuffle mode (delayed + undelayed), effectively doubles the tempo

•Trigger Delay (Pulse Width) big knob, attenuverter, and jack:

•Depending on the Mode Switch, either trigger delay time or pulse width is controlled

•Pulse width of the main QCD output is effected (no matter what mode the expander is in)always

•The big knob sets the amount of delay time or pulse width

•The signal on the CV jack is variably attenuated and/or inverted using the attenuverter

•The attenuverted CV and big knob's setting are added together

•Attenuverter for Div/Mult CV

•Variably attenuates and/or inverts the signal on the Div/Mult CV jack on the main QCD module

•LED dimmer

•The small hole at the bottom is for adjusting the LED brightness. A tiny phillips screwdriver can be inserted

through the panel to adjust the brightness. See section later in the manual for details

Specifications

•12 HP Eurorack format module

•0.98” (25 mm) maximum depth

•+12V rail: 44mA max, not used, 30mA max+5V rail -12V rail:

Connecting to the QCD

First, remove all the jumpers from the QCD's

"EXPANDER" header. Save these jumpers

with your QCD box and manual in the bag

provided with the QCD. You may wish to use

small needle-nose pliers to remove the

jumpers if you can't remove them with your

fingers.

Second, connect the QCD and QCD

Expander together using the 16-conductor

ribbon cable provided. One end plugs into

the "EXPANDER" header on the QCD, and

the other end plugs into the "TO QCD"

header on the QCD Expander. Make sure

the red stripe points down on both modules.

Now connect both modules to your power

rails, and power up. Tap a tempo on the

QCD, and the lights on the QCD Expander

should blink in time and change rate when

you turn the QCD's Div/Mult pot. Also, the

main QCD's lights should react to adjusting

the Gate PW knob on the Expander.

Note: The ribbon cable that connects the

QCD and QCD Expander is a standard

Doepfer/Eurorack power cable. In case you

lose or misplace the cable, or need a

different length, you can use a standard 16-

to-16pin Eurorack power cable.

About Attenuverters

“Attenuverter” is short for “attenuating inverter”. These knobs take the signal on the CV

jack and control how much of this signal will effect the parameter. They also can invert the

CV signal, meaning that a positive CV signal creates a negative effect (and vice-versa).

On the QCD and Expander, the two parameters with CV jacks and attenuverters are

Div/Mult and Gate PW/Trig Delay. The CV jack for Div/Mult is located on the main QCD

module, and the CV jack for PW/Delay is located on the Expander module. Both

attenuverters are located on the Expander.

When the attenuverter knob is turned to the center, the CV jack will have no effect on the

parameter. The knob has a slight detent at center, so this position can be easily found by

feel.

Turning the knob slightly to the right means that a positive signal on the CV jack will

increase the parameter slightly (for example, Div/Mult might sweep from “=” to x2). At fully

clock-wise, a 5V signal will sweep the parameter from half-way to maximum (for example Div/Mult would sweep from “=” to

x16). A 10V signal will sweep the parameter from minimum to maximum (/32 to x16).

Turning the knob slightly to the left means a positive signal will the parameter slightly (for example, Div/Mult might decrease

sweep from “=” to /2). At fully counter-clockwise, a 5V signal will sweep from half-way to minimum (e.g. “=” to /32).

When patching one QCD channel into another's Div/Mult CV jack, the channel will switch between two tempos. The first

tempo is set by the main Div/Mult knob. The second tempo is set by the Div/Mult CV attenuator. Turning the attenuator to the

right means the second tempo will be faster than the first. Turning the attenuator to the left means it'll be slower.

Making Rhythms

The QCD Expander and QCD are designed to create an infinite variety of rhythms that can be programmatically built, as

opposed to linearly "grid" sequenced. This is a form of non-linear sequencing. Using a few short patch cables, you can create

complex rhythmic patterns for multiple voices/drums.

The basic concept is to use the channels to modulate each other:

•Modulate a channel's Div/Mult amount with another channel. Use the Div/Mult CV attenuator knob to fine-tune.

•Modulate a channel's Trig Delay amount with another channel. Use the PW/Delay CV attenuator knob to fine-tune.

•Reset a faster channel with a slower channel.

•Use one channel to route other channels, using an external module such as a switch or VCA Matrix.

•Clock a channel with a dynamically changing channel to introduce clock tracking lag

Typically, the modulated channel will be faster than the modulating channel. For example, one channel might run at p3-x2 and

the second channel running at /4 could modulate the first channel's Div/Mult between p3-x2 and x3.

In the examples below, some references to drums (kick/snare/hats/etc) will be made. This is only to make

use of a common musical language and the relative tempos/spaces these drums traditionally fill in music.

That is, you don't actually need to imitate a particular type of acoustic instrument to enjoy the QCD! It's

great practice to Async trigger a PEG channel, or Reset trigger a QPLFO channel, or trigger an ADSR, and

use those shapes to modulate filters, VCOs, VCAs, wavetables, etc...

Product specificaties

Merk:	4ms
Categorie:	Niet gecategoriseerd
Model:	QCD Expander

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