Thursday, February 16, 2012

Doepfer A-131 Demos by Raul Pena

Raul Pena (from http://raulsworldofsynths.com/) has released four more new demo-videos, this time involving the A-130/A-131 Voltage Controlled Amplifiers.

Video 1: Doepfer A-131 VCA Intro
http://www.youtube.com/watch?v=MivzVdpz5Dg

" Introduction to the features of the Doepfer A131 EXP VCA.Short demonstration of Tremolo.Sound and Video by Raul Pena. "

Video 2: Processing CV with Doepfer A131 EXP VCA Part One
" Demonstration of Doepfer A131 EXP VCA for processing CV. From the manual "For audio signals, you would normally use the exponential VCA (A-131), and for control voltages, the linear VCA (A-130). It doesn't always have to be that way, though." "The old versions of A-130/131 (those with CEM3381/CEM3382) are not able to process slowly varying control voltages (AC coupled in/outputs). Sound and Video by Raul Pena. "


Video 3: Processing CV with Doepfer A131 EXP VCA Part Two
http://www.youtube.com/watch?v=a9qSw_-lz3Q

" Demonstration of Doepfer A131 EXP VCA for processing CV. From the manual "For audio signals, you would normally use the exponential VCA (A-131), and for control voltages, the linear VCA (A-130). It doesn't always have to be that way, though." "The old versions of A-130/131 (those with CEM3381/CEM3382) are not able to process slowly varying control voltages (AC coupled in/outputs). Sound and Video by Raul Pena. "

Video 4: Amplitude Modulation with Doepfer A131 EXP VCA
http://www.youtube.com/watch?v=-kyQV1CEpIQ

" Demonstration of Amplitude Modulation using the Doepfer A131 EXP VCA. Sound and Video by Raul Pena. "

More video's in this series will be added to this post later.