Majella audio MVCF-I User manual

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MVCF-I USER MANUAL
Version 1.0
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Voltage contolled Filter (MVCF-I)
User Manual
©2020 Majella Audio
2
INTRODUCTION
The MVCF-I is 12dB/oct voltage controlled
filter, with lowpass and hi-pass mode. The
MVCF-I has voltage controlled resonance
and cutoff. There is control over the input
gain and the resonance can be driven into
self-oscillation.
CONTENT
In the box of the assembled version of the
MVCF-I contains the. following
•!Assembled and Tested Module
•!16 pin to 16 pin ribbon cable
•!Mounting hardware: 4x M3 screws
and M3 washers / rack crash
protectors
If anything of the above is missing. Please
contact your dealer or support@majella-
audio.com
SPECIFICATIONS
•!Dimensions: 128.5 x 30 x 45 mm
(6HP)
•!Doepfer A-100 Eurorack compatible
(16 pin power connector)
•!Power consumption: +/-12V (15mA)
POWER CONNECTION
This module is designed to be connected to
your Eurorack system, using a 16-pin ribbon
cable. The -12V (red stripe) should be
directed as shown in the picture below.
WARNING!
This module is designed for Eurorack
systems. The supply should be +-12V and
connected signals should not be out of the
+-12V range! Do not reverse polarity when
connecting the power, this will damage
your module permanently!

Voltage contolled Filter (MVCF-I)
User Manual
©2020 Majella Audio
3
OVERVIEW (See figure 1)
CONTROLS
1.!CUTOFF
Controls the cutoff frequency from 0Hz to
17kHz.
2.!RESONANCE
Controls the resonance amount from 0dB
up to self-oscillation from 95% knob turn.
3.!CUTOFF AMOUNT
Controls the amount of control voltage that
controls the cutoff frequency (see 9).
4.!RESONANCE AMOUNT
Controls the amount of control voltage that
controls the resonance (see 10).
5.!GAIN
Controls the input signal gain.
6.!HI-PASS button
Normally the MVCF-I is a lowpass VCF.
When this button is pressed the MVCF-I is a
hi-pass VCF.
CONNECTIONS
7.!INPUT
Audio (VCO) input.
8.!OUTPUT
Audio output.
9.!CUTOFF
Control voltage input to control cutoff
frequency.
10.!RESONANCE
Control voltage input to control resonance
amount.
Figure 1: Overview

Voltage contolled Filter (MVCF-I)
User Manual
©2020 Majella Audio
4
MVCF-I User Manual
version 1.0 20-01-2020
©2020
https://majella-audio.com
[e-mail]
Designed and made in Holland
Important notice:
•!WARNING: This product is not a toy and contains small parts!
•!WARNING: This product is not suitable for children within the age of 0-16 years!
•!WARNING: This product is not for human/animal consumption!
•!WARNING: This product is meant for professional usage only!
•!WARNING: This product can be damaged by sharp objects!
•!WARNING: This product can be damaged by fluids, do not spill any fluids (e.g. water) over this product!
•!WARNING: This product can be damaged when being dropped, used carelessly or used otherwise than described in this
manual! This product should be connected and used as described in this document!
•!WARNING: This product is not meant to be modified!
•!WARNING: This product is meant to be used as a musical instrument and nothing else!
Majella Audio products should be carefully used as musical instruments and as described in this user manual, by professionals.
Majella Audio can not be held responsible for any damage to human beings, animals and personal or business
belongings/property/things.