HQ Power PROMIX22U Notice D'emploi page 4

NOTE: Either the MIC or the LINE input of a given channel can be connected
at one time. Never connect both simultaneously to the same channel.
3. TRIM
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 (6) 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
All mono input channels are fitted with three-band EQ. The upper (HIGH) and
lower (LOW) shelving controls have their frequencies fixed at 12kHz and 80Hz
respectively. The midrange control has a peaking response, with Q fixed at 2
octaves and the frequency at 2.5kHz. All three bands have up to 15dB of cut
and boost with a centre detent for "off".
5. 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.
6. PEAK LED
The PEAK LED illuminates when a channel is going into overload. It detects the peak level after the EQ
and will light at 3dB 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).
7. Channel LEVEL Controls
The channel LEVEL 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 (16) to unity gain (0dB). The LED OUTPUT meter (15) should read around 0dB.
b. Stereo Input
7. Channel LEVEL Controls
The channel LEVEL 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 (16) to
unity gain (0dB). The LED OUTPUT meter (15) should read around 0dB.
8. LINE Input
Each stereo channel has two balanced line level inputs on ¼" TRS jacks for left and
right channels (tip = positive (+), ring = negative (-), sleeve = ground). If only the
connector marked "L" (left) is used, the channel operates in mono. The stereo
channels are designed to handle typical line level signals. The input signals to these
jacks can be either balanced or unbalanced.
PROMIX22U_v2
4 HQPOWER