General Information
The Grendel 2TAC is a controller for music synthesizers that use the 1V/octave CV-Gate standard. It
requires patch cables with 3.5mm mono phone plugs, commonly used for Eurorack type systems.
Sequencer Standards
2TAC uses the pulse-per-step clock standard. One clock pulse advances the sequencer by one grid step.
Each clock pulse typically represents a 16th note or 8th note.
The sequencer has patchable Reset In / Reset Out connections to maintain a common reference point
when other sequencers are synchronized to it. A Reset Out pulse is transmitted when Stop is pressed.
While Reset In is activated, such as by patching a Gate signal to it, the transport is paused.
2TAC can serve as the master clock for other compatible sequencers, or it can be a slave unit to expand
your production setup when you’ve “maxed out” your other sequencers.
Pattern Data
2TAC’s patterns are limited to 4 different pitches. The 4 keys on the keypad can be considered as a 4-
note mini keyboard. You can tune the keys independently with the rotary encoders above each key.
The restriction of only having 4 pitches per pattern lends itself to a minimal compositional style.
However, it is possible to layer several patterns during playback with the Sticky Patterns feature. In this
case, you can produce sequences that contain more than 4 pitches.
Sequencing
You can easily create chains of patterns that play as a loop, allowing simple song structures.
But, 2TAC does not have extensive memory for lots of patterns, multiple song programming, or other
advanced DAW-like features. It is intended more as a scratch pad for developing musical ideas, and
performing minimal compositions which don’t involve a lot of pattern changes.
Controls One or Two Synthesizers
You can use 2TAC’s Track 1 and Track 2 outputs to play two different analog synthesizers, or use Track 2 as
an auxillary CV channel to control a single synth’s sound parameters like Filter CV, Velocity CV, etc. 2TAC
is not explicitly designed with the ACC GATE function, but you could use Track 2’s Gate Out for that
purpose.
Power Supply
Standard power supply is 9VDC, tip
positive.
It is OK to use a daisy-chain cable
to share power with other gear
from a single AC adapter.
It is safe to connect any DC power
source from 7.5 volts to 12 volts.
Polarity of the power source is
irrelevant. This unit accommodates
both tip-positive and tip-negative
AC adapters.
The unit is protected against over-
voltage with a built-in fuse (self-
resetting fuse).
Made by Rare Waves LLC
(Texas, USA)
RAREWAVES.NET
Design and Support:
Eric Archer
Manufacturer
Connections
V/OCT & Gate Out : 2 each
Clock In, Clock Out (5V pulse per step)
Reset In, Reset Out (5V pulse)
DIN Sync
: Not supported
MIDI
: Not supported