Erica Synths Black 3109 VCF/VCA Manual

Erica Synths Ikke kategoriseret Black 3109 VCF/VCA

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BLACK 3109 VCF/VCA

THANK YOU FOR PURCHASING THIS

ERICA SYNTHS BLACK SERIES MODULE!

The Erica Black Series includes high-end modules with unique functionality

and superior build quality. Only the best, highest quality components are used,

all inputs and outputs are protected against undesired overvoltage. When

designing the Black Series, we placed an emphasis on usability with the goal

of providing an enjoyable user experience. Big knobs are assigned to functions

that make dierences in sound. The Erica Black Series consists of a range of

modules that are needed to put together an entire synth. Enjoy!

The Erica Synths Black 3109 VCF/VCA is a lowpass ﬁlter and voltage-con-

trolled ampliﬁer combo built around the AS3109 VCF integrated circuit, a

contemporary version of the IR3109 chip, found on vintage Roland synths

such as the Jupiter series, Juno series and the SH-101. The 3109 VCF/VCA is our

attempt to recreate the iconic sound of these synths, but we also aim to

improve upon it. Filters based on IR3109 had several drawbacks, including

a volume drop when the resonance is increased so we added a volume drop

compensation as well as a built-in VCA for more versatility in compact setups.

Additionally, 1V/oct tuning is implemented so you can use this module for

perfect VCF keyboard tracking and also as a VCO.

FEATURES:

24dB/oct lowpass VCF

Volume drop compensation

Built-in VCA

Cuto level attenuverter

1V/oct tracking

SPECS:

Audio level 10Vptp

Cuto CV level (full span) -5V - +5V

VCA CV level 0 - +10V

Max power consumption 25mA@+12V, 25mA@-12V

Module width 10HP

Module depth 35mm

OUTPUTVCA CV INVCF CV ININPUT

CV2

CUTOFF

CV2

BLACK 3109 VCF/VCA

OFF

VOL COMP

AUDIO LVL RESONANCE

VCF CV1 LVL VCA CV LVL

CUTOFF

This is the manual cuto control. An external CV is added

to the knob position.

CV2

This is the second cuto CV input. It applies the CV

without attenuation, therefore here you can connect the

CV for 1V/oct tracking.

VOL COMP

This is the volume drop compensation switch. When it is

ON, the volume will not drop when resonance is increased.

AUDIO LVL

This is the audio signal level attenuator.

RESONANCE

This is the resonance control. In “classic” mode (VOL COMP

switch set to OFF), the volume will drop slightly when the

resonance is increased. If you set the VCF to self-oscillate

and apply 1V/oct CV, you can use the module as a VCO. It

works particularly well as bass drum synthesizer when

punchy envelopes are applied to the CV input.

VCF CV1 LVL

This is the cuto CV attenuverter. At 12:00 no CV is applied,

turning the knob clockwise increases the CV amount,

turning it counter-clockwise, the incoming CV is inverted.

VCA CV LVL

This is the VCA CV attenuator. If nothing is patched

into VCA CV IN, it acts as VCA bias control – you need

to dial it all way clockwise in order to open the VCA.

VCF CV IN

This is the cuto CV input with the attenuverter.

OUTPUT

This is the audio output.

VCA CV IN

This is the VCA CV input. Please, note that the input is

normalled to +10V and you need a 0 - +10V envelope to

fully open the VCA.

INPUT

This is the audio input of the module.

Produkt Specifikationer

Mærke:	Erica Synths
Kategori:	Ikke kategoriseret
Model:	Black 3109 VCF/VCA

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