16
7.2
PUSH BUTTON CONTROLS
Several push buttons are to be found in the MASTER section. These are POWER ON (PB 1), PHANTOM
48V (PB 6), AUX 2 PRE/POST (PB 7), AUX 3 PRE/POST (PB 8), EFX RTN TO AUX 2 (PB 9) and EFX
RTN TO AUX 3 (PB 10).
7.2.1
POWER ON
(PB 1)
This button switches the power from the PSU to the mixer 'On and 'Off'.
☞
Make sure this button is in the
'OFF'
position before connecting the PSU to the
mixer; the LED (L 2) indicates the position of the On/Off switch.
7.2.2
PHANTOM 48 V
(PB 6)
The PHANTOM 48 V button enables the Phantom Power to be supplied to the Mic input
XLR sockets of each channel.
Allow a short period of time to elapse after switching the system 'On', to allow the levels
of the circuitry to settle before setting the input gains.
7.2.3
AUX 2 PRE/POST
(PB 7)
This push button enables the AUX 2 bus to be connected either before or after the fader control (Pre/Post
Fader). If selected in PRE, any variations made by the channel fader make no difference to the signal
sent to the Aux bus. Vice-versa, if in POST, changes made to the fader position will affect
the signal from the AUX 2 OUT socket.
7.2.4
AUX 3 PRE/POST
(PB 8)
This push button enables the AUX 3 bus to be connected either before or after the fader
control (Pre/Post Fader). The same considerations as for AUX 2 PRE/POST apply to this
push button.
☞
N.B.- The
Pre-Fader mode
of these two push buttons is normally employed for
monitoring
while
Post- Fader
is generally used for external effects processor signal sends.
7.2.5
EFX RTN TO AUX 2
(PB 9)
When pressed, this button will direct any effects connected to the Stereo Return socket to
the AUX 2 bus, meaning that it will influence any signal from the AUX 2 OUT socket.
7.2.6
EFX RTN TO AUX 3
(PB 10)
When pressed, this button will direct any effects connected to the Stereo Return socket to
the AUX 3 bus, meaning that it will influence any signal from the AUX 3 OUT socket.
7.3 METERING
The Main Mix/PFL level is displayed on two LED bar graph meters.
These L/R bars indicate the Master L and R output levels as well as the
Mono PFL.
LEDs indicate POWER ON (L 2) (top left in the Master section), +48 V
PHANTOM POWER (L 3) (in the top right corner of this section of the
control panel), and PFL (L 4) in the centre. This last mentioned led will
indicate when the two LED bar graph meters are monitoring the level of
the Pre-Fade Listening, as selected by the push button (PRO PFL) (PB
5) on each of the channels.
7.4 MONITORING
The output level to the headphones is controlled by the
HEADPHONE - CTRL ROOM slider (S 15).
The two LED bar graph meters are used to monitor the
levels of several sound sources and they follow whatever
source is selected.
Although most of the time you will want to monitor the Main Mix, there are exceptions. These include PFL
of course, and also 2-Track (or other external source) playback.
Selecting PRO PFL in any channel does not affect the signal from the L/R recording outputs.
The 2-Track Tape Input could be fed from a hi-fi pre-amp, allowing you to monitor extra external sources
such as Discs, Cassettes, CDs etc.
