Facilities And Controls - Focusrite Trakmaster Bedienungsanleitung

•
If necessary, use the 3-BAND EQUALISER to set the desired tonal quality.
•
Use the FADER to set the final output level (see instructions in Facilities And
Controls section of this manual.)

FACILITIES AND CONTROLS

– turns the unit on and illuminates the blue LED directly below it. We
POWER
recommend that the unit be powered up before connecting to any other equipment that it
is feeding, to avoid clicks or thumps which may harm output devices. It is best to allow the
unit to stabilise for a couple of minutes before use to ensure that the internal circuitry is
properly initialised.
DISCRETE PRE-AMP
This part of the unit is a discrete transistor preamplifier, for matching the level of a choice
of incoming signals to the internal working level of the OPTICAL COMPRESSOR and
3-BAND EQUALISER stages that follow.
– This provides +48V of phantom power for condenser microphones
+48V switch
when engaged. This switch affects the MIC INPUT only. If you are unsure whether your
microphone requires phantom power, refer to its user guide before connecting, as it is
possible to damage some microphones by providing them with phantom power.
– This is an XLR input to be used with a microphone. This input is only
MIC INPUT
active when the LINE switch is disengaged. Inserting a 1/4" jack in the INSTRUMENT
INPUT automatically cuts the MIC INPUT signal.
– This is a high impedance 1/4" jack input that allows you to
INSTRUMENT
connect an electric guitar or bass guitar to the unit without loading the pickups, and
without the need for a DI box. A synth with a low output level may also be connected
here. This input only functions when the LINE switch is disengaged.
– This sets the level of the incoming signal from the selected input.
INPUT GAIN
Connect an input signal to the unit, ensuring that the INPUT GAIN control is set fully
anti-clockwise, and increase the INPUT GAIN so that the green SIG LED is always
illuminated when there is a signal present. The red O/L (Overload) LED may light
occasionally, but only if the input signal gets particularly loud. If the O/L LED stays on
continuously for any period, or you hear the unit distort during loud peaks, you should
reduce the INPUT GAIN.
– When engaged, this selects the rear LINE INPUT, instead of the front
LINE switch
panel inputs (MIC INPUT and INSTRUMENT.) When disengaged, the front panel
inputs are selected. If a microphone and instrument are connected simultaneously, the
INSTRUMENT input will override the MIC INPUT.
– This is a high-pass filter, which removes unwanted low
HPF ( ) switch
frequencies such as rumble from microphone stands, or 'proximity effect' (where low
frequencies are over-emphasised when using certain types of microphone at close
distances.) This switch affects the MIC INPUT only.
OPTICAL COMPRESSOR
The TrakMaster's compressor uses opto-based technology, which gives more pleasant
distortion characteristics and faster response than low-cost, VCA-based compressors. The
optical compressor acts like an automatic volume control, turning down the volume of a
signal if it gets too loud. It reduces variation between loud and quiet passages, as it
automatically reduces the gain when the signal rises above a certain volume (the
'threshold'). Therefore, it tends to even out a performance, stopping the instrument from
leaping out of the mix, or disappearing into it. Compression can also make things sound
louder, without actually increasing the peak level. (For more information on compression,
refer to the Beginner's Guide to Compression on page 11)
COMPRESSION – This sets the volume level, or 'threshold', at which compression
begins, affecting how much of the signal is being compressed. Turning the
COMPRESSION control clockwise increases the amount of the signal that the compressor
affects – giving more compression. Turning the control anti-clockwise decreases the
amount of the signal that the compressor affects – giving less compression.
TIGHT switch – This switch gives a harder compression 'ratio' (6:1) when engaged.
This means that the level of signals exceeding the 'threshold' will be even further reduced.
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