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PDF AM8105 Data sheet ( Hoja de datos )
| Número de pieza | AM8105 | |
| Descripción | Super JX Filter & VCA User Manual | |
| Fabricantes | Analog Metropolis | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AM8105 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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AMSynths
AM8105 Super JX Filter & VCA
User Manual
24dB Low Pass VCF, HPF and VCA
© AMSynths 2015
Rob Keeble, Owner & Designer
Contact: [email protected]
Web Site: www.amsynths.co.uk
1 page  
AM8105 Super JX Filter & VCA
3 Module Description
The AM8105 module is a clone of the 24dB Low Pass Filter,
fixed High Pass Filter and VCA in the Roland Super JX10.
The circuit is based around the Roland IR3R05 chip which
first appeared in the MKS80 REV5 replacing the IR3109 and
CEM3360, and then made its way into the JX-8P, MKS70,
JX10 and Alpha Junos.
The filter and VCA was usually followed by a fixed High
Pass Filter in these polyphonic analog synthesizers. The
14-pin DIL chip contains two 2-pole State Variable Filters
configured as a 4-pole Low Pass filter only.
The chip has external VCF capacitors with two internal
VCA’s; one for voltage controlled Resonance and one as the
final VCA in the signal chain – with both Exponential and
Linear voltage control. The IR3R05 implementation in
Roland synths does not go into self oscillation at high
Resonance levels, as they wanted to avoid the self
oscillation distortion from SVF’s and provide a smoother
sound.
We have implemented Resonance into self oscillation, so
you get the best of both worlds! This module is limited to a
production run of 50x.
The AM8105 module uses an original and new Roland
IR3R05 chip, which delivers a 4-pole voltage controlled low
pass filter, with a smooth and controlled resonance. There
is a linear VCA input for connecting an external ADSR, the
VCA exponential input is not used. The VCA is followed by a
fixed single pole High Pass Filter which has 2x HP modes
and a wicked Bass Boost. These modes are selected by a
momentary push button, with LED indicators for all 4
modes (blue, blue, green and red).
AMSynths
Page 5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet AM8105.PDF ] | |
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