Skip to main content

A-188-I BBD Tutorials by Raul Pena

Module A-188-1 is a so-called Bucket Brigade Device module.

A BBD circuit can be regarded as a chain of Sample&Hold units (S&H) which pass on their voltages to the next S&H in the chain at each clock pulse.
From this also the name Bucket Brigade Device is derived as each stage of the BBD can be treated as a bucket.

The sounds generated by module A-188-1 are very special. 
Typical applications for this module are: Flanger, Chorus, Analog Delay or Karplus/Strong synthesis.

Writing a post about the BBD has been on my list for a long time.
I own a 1024 stages version since the year it was released and i like it a lot.
The difficulty that i had was that it was pretty hard for me to understand all functions of this module completely, and than also have to write an explanatory post about it in English, which is not my native language...

I am very glad that Raul Pena (from took the time and recently made some very interesting tutorial-video's explaining the whole A-188 in detail. 
This set of YouTube video's show you all the secrets of the module, with clear narration and pro sound-examples. Make sure you have some time, because in total this 4-part tutorial is longer than an hour (!)

Video 1: Doepfer A-188-1 BBD basics
"Overview of functions and features of the Doepfer A188-1 BBD Delay module.
Video, voice, and sound by Raul Pena."

Video 2: Doepfer A-188-1 BBD Basics
Audio Demo 1 : Setup and Filtering
"Audio Demonstration for Basics learned in the previous video. This video contains an explanation of setting up the Doepfer A188-1 BBD Module and audio demonstrations in clock noise and filtering.Sound and Video by Raul Pena."

Video 3: Doepfer A-188-1 BBD Basics
Audio Demo 2 :  Feedback and Modulation
"Audio Demonstration continued from Pt. 1- Setup and Filtering. This video contains audio demonstrations of the Feedback and Modulation capabilities of the Doepfer A188-1 BBD Module. Next in this series: Doepfer BBD Basics Audio Demo Part 3 More Modulation and VC Feedback.Sound and Video by Raul Pena."

Video 4: Doepfer A-188-1 BBD Basics
Audio Demo 3 : More Modulation and Voltage Controlled Feedback
"Continued from A188-1 Audio Demo Pt. 2- Feedback and Modulation. This video contains more audio demonstrations of the modulation capabilities of the Doepfer A188-1 BBD Module. There is also an audio demonstration of Voltage Controlled feedback.Sound and Video by Raul Pena."

Popular posts from this blog

DIY Modular Case Ideas

There are many ways to house your (eurorack) modular synth, i wrote about the pre-manufactured options from Doepfer earlier, find that post HERE, but of course you can also try to build you own case.
There are many ways to make your own A-100/Eurorack case if you start out with just the basic rails and busboard, and you can make it as cheap or expensive as you can.

Check out a few ideas;
Wooden cabinets and side-panels are still very popular amongst (modular) synth enthusiasts.
These simple case standards for the pre-manufactured LC9 cases are very simple, and can be sooo useful Also check out the other great modular pictures on his site.
Matthew Goike (@Goiks) also has some nice wooden cabinets on display and for sale on his website:

...or do what Stretta did (or rather what his brother did), make a high-end wood/brushed aluminium cabinet with integrated LED-lights and some …

Doepfer A-150-8 Octal Manual/Voltage Controlled Programmable Switches Announced

Doepfer has just released some info on their new modules for NAMM 2017 (19-21 jan.) Besides some vintage editions of existing modules, the A-135ABC VC Performance mixer modules, the A-110-6Trapezoid Thru Zero Quadrature VCO and a new A-100LC1 case (economically priced small housing with 48 HP width) there was also one other interesting new module announcement:
Module A-150-8 contains eight manually/voltage controlled switches.  Each of the eight switches has a manual control button (Man.), a control voltage input (CV), a common Out / Input (O/I), and two In / Outputs (I/O1, I/O2).  The switches are bi-directional, i.e. they can work in both directions, so can connect one input to either of two outputs, or either of two inputs to one output. 
Two LEDs show which in / output is active (ie. which is connected to the common out / input).  In addition the LEDs are used for the programming of the module: For each unit the operating mode can be selected:  Toggle or Level controlled. In Toggl…

Happy New Year From PatchPierre

Hi there, it's me again... Happy New Year!

You might have noticed that I havent posted a lot in the last 2 years...
It's been a rough time for me since the sudden loss of two parents within a relatively short time-span and I really needed some time to get myself together... to set things straight, finding myself and selecting priorities... even my regular work suffered from this breakdown.

It took a while to understand it all, and to get a better grip on it, and it's sometimes still not very clear.
I think I have found a way to cope with most of it now... although the slight autism that I have (ADD-like) doesn't make it easy for, especially in crowds with lots of people I don't know...
On my journey I also (re-)discovered the beautiful woman that has always lived inside of me and that i need to accept and cherish... more on that maybe later... I'm not considering changing the name of the blog to PatchPetra.Net 😇 (...yet), but you might spot me somewhere at mod…