Audio I/O 1U Manual
E. OUTPUT VU LEDs - This pair of LEDs monitors the signal level going out of your
modular. The green LED lights around 600mV rms (with a 1kHz sine), which indicates a
decent signal level is present. Red indicates that the signal is clipping the output and
comes out when the output is 6.2V rms. If the red light comes on, you need to back off
on your levels.
Inputs & Outputs
1. LINE IN (L) - The audio present at this jack is a eurorack-compatible (0 dB = 10V p-p)
version of the audio signal coming into the modular via either the 7U Case’s left ¼” input
jack or the Audio I/O Jacks 1U’s left ¼” input jack. The actual level present at this jack is
set by the corresponding LINE IN GAIN (L) knob, and you can monitor this level with the
INPUT VU LEDs immediately above it. This jack enables you to route external audio
signals to various eurorack modules for processing.
2. LINE IN (R) - The audio present at this jack is a eurorack-compatible (0 dB = 10V p-p)
version of the audio signal coming into the modular via either the 7U Case’s right ¼”
input jack or the Audio I/O Jacks 1U’s right ¼” input jack. The actual level present at this
jack is set by the corresponding LINE IN GAIN (R) knob, and you can monitor this level
with the INPUT VU LEDs immediately above it. This jack enables you to route external
audio signals to various eurorack modules for processing.
3. LINE OUT (L) - Any eurorack-level audio sent to this jack will be scaled down to
professional studio-st4 dBu levels and sent out of your modular via either the
7U Case’s left ¼” output jack or the Audio I/O Jacks 1U module’s left ¼” output jack.
This enables you to send eurorack audio directly into your mixer, DAW, or external
effects. You can adjust this level using the LINE OUT GAIN (L+R) knob, and you can
monitor the LEFT channel output level with the 2-stage OUTPUT VU LEDs immediately
above this jack.
NOTE: The LINE OUT (L) jack is normalled to the LINE OUT (R) jack, so if nothing is
connected to the LINE OUT (R), then one signal will feed both of the ¼” output jacks
(either from the 7U Case, or from the Audio I/O Jacks 1U module, whichever you’ve
connected).
4. LINE OUT (R) - Any eurorack-level audio sent to this jack will be scaled down to
professional studio-st4 dBu levels and sent out of your modular via either the
7U Case’s right ¼” output jack or the Audio I/O Jacks 1U module’s right ¼” output jack.
This enables you to send eurorack audio directly into your mixer, DAW, or external
effects. You can adjust this level using the LINE OUT GAIN (L+R) knob, and you can
monitor the RIGHT channel output level with the 2-stage OUTPUT VU LEDs
immediately above this jack.
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