Velleman PROMIX66N - Manual (Page 3)

PROMIX66N/PROMIX88N
V. 01 – 30/10/2012 3 ©Velleman nv
3. TRIM Control
The TRIM control adjusts the input sensitivity (channel gain) of the MIC and LINE inputs
on the mono input channels. This control can be adjusted to accommodate input signals
from a wide variety of sources, from the high outputs from keyboards or drum machines
to the small signal outputs of microphones. This wide range eliminates the need for MIC /
LINE switching. The best S/N balance and dynamic range will be achieved if you adjust
the TRIM control on each channel separately so that the PEAK LED (7) for that channel
lights occasionally.
Note: This control should always be turned fully anticlockwise whenever you connect or
disconnect a signal source to one of the inputs.
4. EQUALIZER Controls
All mono input channels are fitted with three-band EQ. The upper (HIGH) and lower
(LOW) shelving controls have their frequencies fixed at 12 kHz and 80 Hz respectively.
The midrange control has a peaking response, with Q fixed at 2 octaves and the
frequency at 2.5 kHz. All three bands have up to 15 dB of cut and boost with a centre
detent for “off”.
5. AUX / EFF SEND Control
The AUX / EFF controls are mono and post-EQ and post-fader. The signal level sent to
the AUX / EFF bus will be affected by the channel fader setting. The AUX configuration is
ideal for almost all monitoring purpose e.g. for a separate stage monitor mix in live
performances or a studio room monitor in recording applications, such as for a
headphone cue system. The EFF controls the adjustment of level sent by each channel to
the internal DSP (Digital Sound Processor).
6. PAN Control
The channel PAN positions the output of the channel in the stereo field of the Master Mix.
Its constant-power design ensures there are no level discrepancies whether a signal is
hard-panned, centre-stage or somewhere in-between.
7. PEAK Indicator
The PEAK LED illuminates when a channel is going into overload. It detects the peak level
after the EQ and will light at 3 dB before clipping to warn that the signal is approaching
overload. You do not want the PEAK LED to light except very intermittently during a take
or a mix. If it does light persistently, reduce input gain with the TRIM control (3).
8. CHANNEL GAIN Control
The channel GAIN controls determine the output signal level to the master mix bus.
There is no PFL function on the mixer. In order to audition any single channel for proper
gain, you can turn off the gain control of all the other channels (fully anticlockwise) and
set both the auditioned channel and MASTER MIX control (29) to unity gain (0 dB). The
LED OUTPUT meter (21) should read around 0 dB.
STEREO Input Channel (fig. 2)
4. EQUALIZER Controls
The stereo channel EQs operate in the same manner as those in the mono channels. The
left and right signals will be affected equally. A stereo equalizer is generally preferable to
using two mono equalizers when equalizing a stereo signal as it avoids possible
discrepancies between the left and right settings.
5.AUX / EFF SEND Control
These are the same as for the mono channels. Note that a mono sum is taken from the
stereo input.
8. CHANNEL GAIN CONTROL
The channel GAIN controls determine the output signal level to the MASTER MIX bus.
There is no PFL function on the mixer. In order to audition any single channel for proper
gain you can turn off the gain control of all the other channels (fully anticlockwise) and
set both the auditioned channel and MASTER MIX control (29) to unity gain (0 dB). The
LED OUTPUT meter (21) should read around 0 dB.