MIC CHANNEL FEATURES
1. XLR MICROPHONE INPUT
The
XLR MIC
input is designed for balanced low impedance
(microphone) input signals. The differential balanced input
amplifier reduces the common noise picked up on the
microphone cables. The XLR connector is wired as per the
industry standard, pin 1 is ground, pin 2 is non-inverting
(positive), and pin 3 is inverting (negative). Phantom power
is available on every XLR input jack when the phantom
power switch in the master section is pressed. This feature
allows condenser microphones to be run directly from the
mixer. Note: When using phantom power, make sure the
phantom power is switched off before connecting or dis-
connecting microphones to the mixer. It is recommended
to allow 5 seconds for the phantom power to discharge
before making any microphone connections. Also, to avoid
hearing a pop, turn down the master volume when turning
on the phantom power.
2. LINE INPUT JACK
The
LINE
input is a 1/4” phone jack designed for unbalanced
line and instrument level inputs. Examples to use in these
inputs are guitars, keyboards, mics, or a CD or tape player.
The line inputs can be used at the same time the XLR inputs.
3. +20DB GAIN SWITCH
The
GAIN
switch increases the input sensitivity on both the
LINE and MIC input jacks by 20dB. After determining the
input is too low for mixing with the level control, turn down
the level control, press in the gain switch and adjust the
level again. If distortion is heard regardless of the channel
LEVEL control’s setting, disengage this switch to eliminate
over-driving of the input stage.
4. CHANNEL LEVEL CONTROL
The
LEVEL
control adjusts the volume of the channel before
going to the MAIN master LEVEL. Here is where the indi-
vidual channel volumes are adjusted to make up the desired
mix heard at the main outputs. A general rule to prevent
interstage distortion is to always keep the MAIN master
LEVEL the same or higher than the channel LEVEL.
5. MONITOR LEVEL CONTROL
The
MONITOR
level control adjusts the volume of the chan-
nel going to the monitor mix. The monitor level control is
pre-channel level and pre-channel tone controls. This
means it is unaffected by adjustments in channel level and
tone controls. The purpose for this is so the main mix
adjustments for tone and level can be made without dis-
turbing the monitor mix.
6. CHANNEL EFFECTS LEVEL CONTROL
The
EFFECT
control adjusts the volume of the channel going
to the internal effects. Make sure the effects level is not set
too high, if the master effect PK (Peak) LED flashes red, turn
down the Channel Effect until it stops flashing. See # 11 for
more details.
7. CHANNEL TONE CONTROLS
Each channel features active tone controls
LOW
and
HI
. Both
function as boost (clockwise) & cut (counter-clockwise) con-
trols where the center
0
position is neutral. Both
LOW
and
HI
are shelving type tone controls with corner frequencies at
80Hz and 11.5k Hz respectively. It is suggested the channel
tone controls start out in their center
0
positions. A good set-
ting for added dynamics is to set the
LOW
&
HI
at
+6
.
8. THE GRAPHIC EQUALIZER
The 7 band graphic EQ is an excellent tool to fine tune the
overall mix. Set all sliders to their center detent position.
When the sliders are in this position, they do not effect the
audio signal. When a slider is raised or lowered it boosts and
cuts the listed frequency respectively. One setting that can be
used to enhance your sound is to cut the mid range (set the
1KHz slider to -8) and raise the high and low frequencies as
shown. This is a common “smile” curve that gives a tight
punchy sound with
plenty of highs to
cut through a
crowd. The
Graphic EQ can
also help to reduce
feedback.
9. MAIN MASTER LEVEL CONTROL
The
MAIN
control is the master volume control for the mixer. The
MAIN
will control the volume of the LINE OUT jack, the TAPE OUT
RCA jack and the internal power amplifier (speaker volume).
10. PHANTOM POWER
SWITCH AND LED
The PHANTOM power switch turns on the microphone
phantom power in the channel XLR jacks. This power is
used for supplying a bias voltage to condenser micro-
phones. The LED indicates the phantom power is turned
on. The phantom power will not damage dynamic micro-
phones.
PA410 / PA620 CONTROLS
1
PA620
4
5
6
7
3
2
QUICK START UP
If you’re like most new owners, you’re probably in a
hurry to plug your mixer in and use it. Here are some
brief instructions to get you going quickly. With the
mixer unplugged and the unit turned off, complete the
following procedures:
1. CONNECTING AC POWER TO YOUR MIXER
• Be sure to use the correct power cable for your country.
(120VAC or 240 VAC)
• Use only a grounded (3 prong) power outlet to prevent
a shock hazard and reduce hum and noise.
2. CONNECTING SPEAKERS
• Use the 1/4” SPEAKER jacks on the front panel to con-
nect up to two 8
Ω
speakers. The speaker cables are to
be non-shielded with a minimum size of 16 gauge.
NOTE: Do not run your speakers through microphone
wire, guitar cables, or multi-conductor microphone
junction boxes or “snakes” as they are sometimes
referred to. This wire is normally shielded and of a very
light gauge causing a substantial loss of power.
3. CONNECTING INPUTS TO YOUR MIXER
• For low level balanced devices such as microphones, plug
into the balanced
MIC
inputs using a shielded XLR cable.
• For high level unbalanced devices such as instruments
& Keyboards plug into the
LINE
input jacks using a
shielded 1/4” phone cable. Set the
GAIN
switch so the
LEVEL
control is not overly sensitive.
4. TURNING YOUR MIXER ON
• Turn all channel and master
LEVEL
controls to their off
positions
• Adjust all “EQ” tone controls— the channel’s
HI
and
LOW
and the 7 Band Graphic EQ’s to their center position.
• Turn the mixer on by the rear panel
POWER SWITCH
and
watch for the
POWER LED
to light. Your mixer is now
ready to operate.
250
500
100
GRAPHIC EQ
1K
2.5K
0
8
4
4
8
12
12
+
-
5K
10K
0
8
4
4
8
12
12
+
-
MASTER SECTION FEATURES
