Features of the R Series Mixers
Mono Mic / Line Input Channels:
1. Low Impedance (Low Z) Mic Input jacks:
2. Line Input jacks:
3. Low Cut Filter:
4. Gain Control:
5. EQ Section
AUX SECTION:
The low noise, high
headroom Low Z mic inputs are for use with balanced, low impedance
microphones.
These
Tip, Ring, Sleeve (TRS) jacks are designed to
be connected to (-10 to +4dBu) balanced or unbalanced line level sources.
The Low Cut Filter is activated by engaging this button.
When activated, this filter provides an 18dB per octave roll off with -3dB at 75Hz
and can be used to reduce mic handling noise, wind and popping when
microphones are used. It is also useful for minimizing excessive low frequency line
level signals.
In order to achieve the best signal to noise ratio and adequate
dynamic range, the input preamp level of each Mic channel is controlled by the
Gain Control on each channel. To set the Gain Control, place the desired channel
in SOLO mode and watch the left LED bar-graph meter in the Master section of the
mixer while the signal source for that channel is active (whether it be a singer using
a microphone or an instrument connected to the LINE INPUT of the channel). The
ideal level is between 0dB and +3dB. If the PEAK LED on the channel lights up
consistently, the Gain Control is set too high. It is acceptable for the PEAK LED to
flash periodically, especially with instruments like drums or level peaks during loud
portions of a performance.
Each mono channel on the R-1604FX features a three band
Equalization ( EQ
,,
) section. Each band allows for up to 15 decibels of boost
(increase) or cut (decrease) of the signal in the tone range for which it controls (HI,
MID, LOW). In the center
position, the equalizer is bypassed (FLAT) and
the control has no effect on the tonal characteristics of the signal. The
EQ
control is centered at 12kHz and the
EQ control is centered at 80Hz.
Each mono channel on the R-2004FX features a three band Equalization
section along
with a sweepable mid-band control. Each band allows for up to 15 decibels of boost (increase) or cut
(decrease) of the signal in the tone range for which it controls (HI, MID, LOW). In the center
position of the knob, for each band, the equalizer is bypassed (FLAT) and the control has no effect on the
tonal characteristics of the signal. The
EQ control is centered at 12kHz and the
EQ control is
centered at 80Hz. The
band control is slightly different in that it has two knobs. One knob controls the
center frequency (100Hz to 8kHz) and the other knob controls the amount of boost or cut for the selected
frequency.
There are two types of AUX ( Auxiliary ) available on the R Series mixers. Pre-fader
(labeled PRE) and post-fader (labeled POST).
: A PRE fader aux derives its signal independent from the channel fader. Any changes made on the
channel fader do not affect the signal that is sent to the
AUX buss (output). This type of AUX is
commonly used for a stage monitor mix in sound reinforcement applications. It could also be used as a
headphone mix in a recording application.
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R-1604FX & R-2004FX
R Series Mixers
