Tiptop Audio Buchla MARF 248t Handleiding

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MARF Multiple Arbitrary Function Module 248t

Eurorack 200 series

These LEDs indicate

the current Firmware

on power up

Welcome to the 248t MARF User Manual

Before getting started, please read this page carefully.

During the development of the MARF, we gathered information about each function from every available source. Communicating this

information to users of the 248t presented a challenge: how do you clearly explain such a complex device? We determined that the

most eective approach would be to provide three complementary sources of information, allowing users to cross-reference them

when needed:

1 Function and Feature Reference – In the following pages you will find a detailed list of all functions and features,

presented as a concise translation of the original 1977 user manual.

– A comprehensive video guide describing all functions and features, followed by additional videos 2 Video Manual

demonstrating programming techniques and patch examples. Videos can be found here

– Written by Buchla & Associates. Although extremely comprehensive, this manual 3 Original 1977 User Manual

reflects certain historical dierences—for example, voltage scaling (original Buchla systems use 2.4V/Octave, while

Eurorack systems use 1V/Oct). Despite these dierences, it remains an excellent reference and complements the two

resources listed above. The original manual is included toward the end of this PDF.

Preparing Your 259t Oscillators to Host the 248t

During MARF development, the 259t ART firmware was updated to utilize ART’s high-speed signal capability, enabling accurate pitch

slides and glide eects generated by the MARF. Before integrating the MARF into your system, we recommend updating the firmware

of your 259t. The update file is available for download, and installation instructions can be found in the 259t user manual.

Upon power-up, the indication LEDs on the 259t display the firmware status using the Modulator Range LEDs while the Waveshape

LEDs are o:

• All Range LEDs o - update needed

• High LED on - update done

If the ART functionality on your 259t has not been used previously, initial tuning may be required. Refer to the 259t user manual for

detailed instructions. Initial Tuning Auto Tuning andswitch is accessible at the lower-right section of the MARF.

Product specificaties