SoundCraft SPIRIT 8, Руководство пользователя

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Page 13
STEREO INPUTS
E
ach Stereo Input section comprises two independent pairs of inputs. The Stereo
Input feeds a full-facility input channel, very similar to the mono input. The second
input is intended for a cassette or CD source, typically to provide background music
before a performance and are fed to the stereo mix only and Aux 1 & 2.
CASS/CD INPUT SECTION
13 GAIN
The GAIN switch provides two input sensitivities. The LO setting (switch released)
should be selected for -10dBV semi-professional equipment such as CD players or cas-
sette, and the HI setting (switch pressed) should be selected for -20dBV Hi-Fi equip-
ment. Start with the LO setting if the source level is unknown.
14 AUXILIARY SENDS
These controls route a mono sum of the input channel signal to Auxiliary busses 1 &
2. These are separate from the main outputs and can therefore provide additional out-
puts for foldback, echo units or extra loudspeaker `fills’.
The sends are derived before the LEVEL TO MIX control and are therefore not
affected by the position of that control. This makes them particularly suitable for fold-
back or monitor feeds, which need to be controlled separately from the main P.A. mix.
15 PFL
When the PFL switch is pressed, a mono sum of the pre-fade signal is fed to the head-
phones and L & R meters, where it replaces the normal Mix L/R signal. The PFL/AFL ON
LED on the master section illuminates to warn that the headphones and the meters are
now responding to the PFL/AFL selection and the PFL LED on the input section lights to
identify the active channel. This is a useful way of listening to any required input signal
without interrupting the main mix, for making adjustments or tracing problems.
16 LEVEL TO MIX
This control sets the level of the stereo signal to the stereo MIX.
Important:
The Stereo Input muting does not affect this section. It is therefore impor-
tant that the knob should be left fully anticlockwise when not required.
STEREO INPUT SECTION
17 GAIN
This knob allows you to match the input level to suit a wide variety of professional, semi-
professional and hi-fi sources. Start with a low setting, especially for professional equipment,
checking the level on the meters using PFL, and increase it if you cannot reach an adequate
signal level with the fader at maximum.
18 EQUALISER
The Equaliser section has HF and LF shelving controls, each with a range switch to
provide two centre frequencies for each control.
Turn the HF knob to the right to boost high (treble) frequencies by up to 15dB at a
choice of 6kHz or 12kHz centre frequencies, adding crispness to percussion from drum
machines, synths and electronic instruments. Turn to the left to cut these frequencies,
reducing hiss or excessive brilliance.
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