11
white = input INST B or Channel B).
27. GROUND button
Press the GROUND button to eliminate
hum.
If the GROUND switch is not pressed the
inbuilt Lehle transformer ensures galvanic
isolation between the shielding of the RMI
Acouswitch IQ DI und the earth conductor
of the XLR cable attached. If this setting
generates hum, activating the GROUND
switch may solve the problem. When the
GROUND button is pushed, the shielding
of the RMI Acouswitch IQ DI and the earth
conductor of the XLR cable are connected.
If in doubt a “trial‑and‑error” approach is
recommended to identify the position that
generates less noise.
28. PAD button
Push the PAD button to attenuate the out-
put signal.
The D.I. output is designed to match the
line input of any mixing console. If the
mixing desk does not offer line inputs you
may use the more sensitive mic input of
the mixing desk after pressing the PAD
button to attenuate the output of the RMI
Acouswitch IQ DI to match the microphone
input of the mixing desk.
29. PRE/POST push button
Press the PRE/POST button to take the EQ
and the effect loops out of the D.I. signal
path.
With the “PRE” setting the signal is rout‑
ed directly to the D.I. Out without going
through the EQ and the loops. The LINE
OUT routing remains unaffected.
Note: In a recording situation it is pref‑
erable to record the acoustic instrument
signal as is and to add effects at a later
stage. The design chosen here for the
“PRE” function allows the musician to
hear his signal with EQ and effects as
he is used to via the LINE OUT, while at
the same time the unprocessed signal is
taken directly after the volume control of
channel A or the buffer of channel B and
sent to the mixing console via the D.I Out.
Effects can then be added during the mix
by means of re‑amping, which generally
gives better results.
30. D.I. OUT
Use the D.I. OUT to connect to a mixing
desk via an XLR cable.
The D.I. OUT of the RMI Acouswitch IQ DI
is designed to match the line input of any
mixing console. If no XLR line inputs or
only low‑impedance microphone inputs
are available on the mixing desk, however,
press the PAD button (28) to attenuate the
level of the RMI Acouswitch IQ DI output.
Note: Obviously, the D.I. OUT and the LINE
OUT can be used at the same time so that
the RMI Acouswitch IQ DI signal can be
sent to both a power amp or acoustic amp
(via LINE OUT) and a PA or recording con‑
sole (via D.I. OUT).
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