20 Poles - built with super-matched THAT300s:
Demo of a BCM847 version:
Jürgen Haible's legendary redesign of the Tau "The Pipe" Flanger - actually, a Phaser, using 20 (twenty!) all pass filter stages is back in a slightly modernized version, including some additions and modifications compared to the original Haible board:
Any information given here is preliminary and subject to change - please compare against Jürgen's original documentation and do not simply rely on the files here.
The pcb is available in different versions:
Make sure you check your version before you start building!
Do not install both BCM847DS and THAT300s!
Please note: pcb V1.0 contains an error in the optional (added) CV mixer/processor - pins 5 and 6 of op-amp "UM" are mixed up. This can be fixed by leg-bending and adding a wire as shown here. YOU ONLY NEED THIS FIX IF YOU HAVE THE FIRST VERSION AND WANT TO USE THE CV MIXER / PROCESSOR - otherwise you can simply ignore it.
- only for the 2015/2016 Haible Tau pcb by R*S -
(not for the original Haible board)
Please inform me by email (or via the contact form) about any errors you find - Thanks!
All information provided is strictly for personal / educational use only.
Please do not distribute / mirror.
A limited number of pcbs is now available. Please not that this is a DIY project designed to be powered by +/-15V (see comments re 12V below!) with a number of options - some sodering and building experience is recommended.
Price: € 72 (including LM3046, 20 BCM847DS and 40 C0G 1%(!!!) caps reflow soldered in) - SOLD OUT! -
Price: € 48 (including 1 LM3046 and 20 BCM847DS matched transistors reflow soldered in) - BACK IN STOCK -
Price: € 40 (including (only) 1 LM3046 without BCM847DS - use this pcb for THAT300s!) - IN STOCK -
Price: € 33 (without any SMT parts soldered in) - FEW IN STOCK -
To build your Tau in 4x4 (4U) format, a limited number of front panels and panel pcbs are available. The 4x4 kit takes advantage of the added CV processor and features massively increased CV control: not only the original 1V/Oct, but also a -1V/Oct input and an attenuverting CV input can be used at the same time for crazy Sci-Fi effects and more ...
Price: € 70 (without main Tau pcb!) - IN STOCK -