User manual

5
SYMMETRY CONTROL
The position knob allows for manual ad-
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stereo output seem skewed. For the sake of
precision, the range of operation is limited to
+2/–12dB.
GONIOMETER
A stereo image indicator with six LEDs ar-
ranged along vertical, horizontal, and diago-
nal axes offers an important insight into poten-
tial problems in the signal. For a proper stereo
signal, all six LEDs should be lit or blink. If the
horizontal pair of LEDs remains dark, it means

other words, the signal is mono, or the stereo
image is very narrow). If the pair of vertical
LEDs is dark, this means the channels are out
of phase. The two yellow LEDs at the diagonal
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SIGNAL LEVELS
In general, mixing two hot signals may yield
clipping distortion due to the low headroom

conversion is quite safe due to scaling by ½.
However, be careful with the image control
as it introduces up to 2x gain to the S compo-
nent. This may cause distortion if the original
L and/or R signals transmit out of phase com-
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On the other hand, conversion from M/S to
L/R does not involve scaling. This part of the
circuit is fully analog and it may clip if the
M and S signals patched to the respective in-
puts are over 10Vpp. Also, extreme symmetry
correction may introduce distortion due to
the additional gain. To avoid compromising
audio quality, please observe the amplitude
of the input and output signals.
ACCESSORY
Our Coal Mine black panels are available for
all of Xaoc Devices modules. Sold separately.
Ask your favorite retailer. •
block
diagram
ER
HPF
l/r
m/s
image
LEFT OUT
LEFT IN
RIGHT OUT
RIGHT IN
MID SEND SIDE SEND
MID RETURN SIDE RETURN
position
l/r
m/s
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