Before digital advancements simplified sound processing, engineers tackled delays using bulky tape echo machines or natural echoes from reflective surfaces. In the late 1960s, engineers Sangster and Teer innovated with the bucket brigade delay (BBD), a system that splits audio into samples passed through a transistor-capacitor chain. This method mimics how sound travels, delaying the output signal relative to the input.
Over the course of building this module, we reverse engineer the architecture of a classic bucket brigade delay, recreate a bare bones version on the breadboard – and then use a proper BBD chip to implement a simple audio delay effect.
Erica Synths and Moritz Klein have developed a series of educational DIY kits under the brand name mki x es.EDU with one specific goal in mind: to teach people with little-to-no prior experience how to design analog synthesiser circuits from scratch.
What you’ll find in the box is not simply meant to be soldered together and then disappear in your rack. Instead, you go through the circuit design process step by step, learning every choice made and how it impacts the finished module.
Video: https://youtu.be/4LjP5Y1yxXs
Product Specs
- Item Number: 37279
- Make: Erica Synths
- Model: mki x es.EDU DIY BBD
- Condition: Brand New
- Finish: Black
- Categories: diy ⇒ kit
- Function: Delay Effect
- Made In: Latvia
- MPN: ESDIYBBD
- EAN: 4752275000839
- Modular Grid: Eurorack ⓘ ＋
- Dimensions*: 10 HP
- Power*: 35 mA +12V 35 mA -12V 0 mA 5V
* User contributed details