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Contents
HYDRA4 Features.............................................................................................................................2
HYDRA2E Features...........................................................................................................................3
Technical Data..................................................................................................................................3
Connections.....................................................................................................................................4
Buffers..............................................................................................................................................4
Muting and Clickless Switching........................................................................................................4
Presets..............................................................................................................................................5
MIDI Channel...................................................................................................................................5
Operating the Loops........................................................................................................................6
Loop muting and clickless switching.......................................................................................................6
MIDI commands (Loops).........................................................................................................................6
Operating the Expression Outs........................................................................................................6
MIDI commands (EXP)............................................................................................................................6
LFO Waveforms (EXP).............................................................................................................................7
LFO Parameter (EXP)...............................................................................................................................8
Operating the Switches....................................................................................................................9
Switch Behaviour....................................................................................................................................9
LEDs........................................................................................................................................................9
MIDI Commands (EXT)............................................................................................................................9
Pulses (EXT)..........................................................................................................................................10
MIDI clock pulse (EXT)..........................................................................................................................10
Pulse length (EXT).................................................................................................................................10
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Summary of Contents for Hydra HYDRA4
- Page 1 Contents HYDRA4 Features..........................2 HYDRA2E Features...........................3 Technical Data..........................3 Connections.............................4 Buffers..............................4 Muting and Clickless Switching......................4 Presets..............................5 MIDI Channel...........................5 Operating the Loops........................6 Loop muting and clickless switching.......................6 MIDI commands (Loops).........................6 Operating the Expression Outs......................6 MIDI commands (EXP)..........................6 LFO Waveforms (EXP)..........................7 LFO Parameter (EXP)..........................8 Operating the Switches........................9...
- Page 2 Master switch to set MIDI channel, save presets and manually select loops White indication LED for each loop • Connect up to four effects devices to the HYDRA4 and bring them in and out of the signal path via MIDI commands. Oscillator Devices HYDRA – 1.0 26. Feb. 2023...
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Page 3: Mute Function
The control switches of the HYDRA2E are completely isolated from the circuit and can switch up to +-60V. Dimensions (HYDRA2E and HYDRA4): 115 x 64 x 57 mm (129 x 71 x 61 mm incl. Sockets) Power Supply (HYDRA2E and HYDRA4): 9-18V center negative. 150mA. - Page 4 Returns. Connect the effects pedals input to the Send and the effects pedals output to the Return. You can also use the HYDRA as output selector for the use of different amps. Connect to the Returns for that. To use the HYDRA as input selector, e.g. to use different guitars, connect to the Sends.
- Page 5 ATTENTION: Preset 0 is the startup state that is called when the device is switched on. The HYDRA ships in omni mode (i.e. it responds to every channel). The HYDRA’s MIDI channel can be set with the Master-Switch, or with MIDI commands.
- Page 6 The HYDRA is is equipped with a muting function. That means that no output signal comes from after muted loops and the loops before. The muting function is grouped in pairs. When loop 1 is muted, loop 2 is also muted and vice versa. Same for loops 3 and 4.
- Page 7 The HYDRA has an internal, MIDI clock synchronous, LFO engine with 3 waveforms to drive the Expression. Function Function EXP1 EXP2 Stop LFO LFO square wave with starting point A Restart LFO LFO square wave with starting point B LFO sine wave with starting point A...
- Page 8 Waveform height 1/4 Waveform height 1/8 Waveform height 1/128 The Offset and Height settings are global, so they persist across a new waveform. Reset with CC 27 60 or CC 33 60. Oscillator Devices HYDRA – 1.0 26. Feb. 2023...
- Page 9 43 Pulse NC MIDI clk every 7th whole note 63 Toggle MIDI clock every 7th note Pulse NO MIDI clk every 8th whole note 44 Pulse NC MIDI clk every 8th whole note 64 Toggle MIDI clock every 8th note Oscillator Devices HYDRA – 1.0 26. Feb. 2023...
- Page 10 The standard length of a pulse is approx. 80 ms. This can be too short for some devices, or too long for fast switching applications. Therefore the pulse length can be set in 10ms steps. Function EXT1-Tip EXT1-Ring EXT2-Tip EXT2-Ring Pulse length in 10ms steps Oscillator Devices HYDRA – 1.0 26. Feb. 2023...
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