Altec Lansing 3300A - Manual (Page 7)

Operating Instructions for the Altec Lansing 3300A Series Mixing Consoles
RETURN level control(s) into
the left Eind/or right sub
chaumels. The control works in
an identical way to the input
channel PAN control.
5. Master Section Controls:
The master section controls
affect the subgroup, main, and
monitor output levels.
The use of subgroups can be
shown by this example: If the
input channel PAN controls are
set fully clockwise for all the vo­
cals, then the SUB R fader has
been assigned as a "vocal sub­
master”. If the SUB R fader is
raised or lowered, the vocal
level in the mix can be set while
preserving the input channel
balance set among the vocalists.
5A. SUB L (Left Submaster):
Controls the volume of the
left stereo output channel.
It is also used as a
subgroup master.
SB. SU B R ( R i g h t
Suomaster): Controls the
vol .ne of the right stereo
01 'ut channel. It is also
1 d as a subgroup master.
5C. MAIN Master: The MAIN
(monaured) output is the
summed mix of the left and
right stereo outputs. The
MAIN master controls the
volume of the output.
5D. MON (Monitor Master):
Controls the volume of the
monitor output signal. The
monitor output is a mix of
the
individual channel
monitor sends.
6. TAPE L and TAPE R: These
controls adjust the level of the
tape left and tape right returns.
7. PHONES (Headphone Level):
The PHONES gain control sets
the level at the headphone jack
(front panel on the 3324A and
the 3316A; top panel on the
3308A). Any signal selected by
depressing a PEL switch will be
monitored through the head­
phone jack. Without any of the
PFL switches depressed, the
headphone circuit monitors the
left and right subgroup outputs
in stereo.
8. METER Assignment Switch:
A push-push switch is provided
to allow the user to select the
points in the circuit which are
monitored by the VU meters.
When the switch is depressed,
the indication will be the audio
level at the MAIN and MONitor
outputs. In the other (non-
depressed) position, signal level
at the SUB Left and SUB Right
outputs win be shown.
9. VU Meters: Two "B" scale ana­
log VU meters with integral
peak lights are used to indicate
signal level at selected points in
the circuit (see meter assign­
ment switch and PFL switches).
The meter scede indicates a
range from —20 dB to +4 dB
with 0 VU = -1-4 dBu, a stand­
ard
in the industry. The
integral f>eak light, located in
the upper right-hand corner of
each meter, shows when the
output is above the -1-14 dB
level and the headroom is being
rapidly exhausted and distortion
is imminent. The meters read
either lefl/right stereo, or
main/monitor level. If any of the
PFL switches are depressed, the
right meter will monitor the
PFL bus signal. A PFL LED is
provided on the meter bridge to
acknowledge the condition.
10. LAMP Connector; A BNC-type
socket is provided at the top of
the mixer panel to accommodate
a Littelite* gooseneck lamp to
allow operation of the board in
low-light conditions. These
lamps are available in different
lengths from many professional
sound dealers and attaches
without tools. 'Hie LAMP
connector car. accommodate
either normal or 'gh intensity
lamps.
11. POWER Switch: The power
switch is used to turn the main
ac power on and off.
12. POWER Indicator: This LED
(green) is ilium Ij atcd when the
main ac power is m.
13. PHANTOM Power Indicator:
This LED (red' indicates when
phantom
power present at
the microphone inputs.
14. PFL Indicator: This LED
(amber) indicates when the PFL
circuit is activated and shows
that the right meter is reading
the PFL bus sigiial level.
4.3 R e a r P a n e l I n p u t
Connectors
(Refer to Figure 6.)
The 3300A series :.:i;ier can accept
program material covering a dynamic
range of over 100 dB. All of the line
inputs cam safely accept signal levels
up to -f20 dBu. (See specifications
for details.) All lim- inputs are made
through standeiru '/i-inch phone jacks
(except for TAPE inputs). Several of
the inputs that directly access the
mix buses can L.. .ised to stack
mixers together without using up an
input channel. The stacking group
includes the AUX , AUX 2, euid
MONITOR inputs. The AUX return
inputs may also be used as stacking
inputs. For stereo subgroup stacking,
set the AUX 1 PAN control to L, and
the AUX 2 PAN control to R and use
AUX 1 and 2 RETURNS for lefi and
right stacking, respectively.
1. Balanced Low-Z Mic Input:
A female a-pin XLR-type
connector is used for balanced
low-impedam-e
microphones.
The MIC .. 'PUT is actively
ALTEC LANSING* CORPORATION • a Mark IV Company