SA240 Mercury Flanger User’s Guide 28
When connecting the Mercury to a recording interface or mixer, should I used a Lo-Z
(microphone) or Hi-Z (line / instrument) input?
The Mercury’s output will be low impedance when the effect is active or in buffered bypass mode,
but it will be high impedance when using true bypass mode and a guitar with passive pickups.
Therefore, it is recommended that you use a high impedance (Hi-Z) input on your recording interface
or mixer to avoid signal loss.
Why doesn’t the Mercury respond to MIDI messages being sent to it?
By default, the Mercury should respond to MIDI continuous controller messages on channel 1 (in
technical terms, this means that the lower 4 bits in the command byte of MIDI messages should be
0000 in binary or 0 in hexadecimal). The Mercury’s MIDI channel can be configured using the Neuro
App or the USB Editor Software. Channel numbers in MIDI use zero-based counting, so MIDI channel
1 is described as 0 in hexadecimal, MIDI channel 2 is described as 1 in hexadecimal, and so on,
concluding with MIDI channel 16, which is described as F in hexadecimal. A continuous controller
message starts with a hexadecimal B and is followed by the channel number (0 through F). So, the
command byte from your MIDI controller should be formatted as shown in the following table:
Each continuous controller command byte is followed by two bytes, the CC number and the value.
So, each CC message consists of a total of three bytes. If the Mercury is not responding to MIDI, make
sure that your MIDI controller is properly configured and sending messages in the format described
above.
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