Alto APM80.1000, User Manual, Page: 9 / 23

8
MIC IN (bal.) MIC IN (bal.)
CH 6 CH 7-8
LOW
NOISE
PR
EA
M
P
LOW
NOISE
PR
EA
M
P
1 2
3
1 2
3
4.1 MONO/STEREO Input Channel Section
Your comprises 6 mono input channels APM80.1000
and 2 stereo input channels, each of them including -20dB
PAD, 3-band equalizer, AUX sends, PAN and LEVEL con-
t ls. The following content will detail the each part.
ro
2
1 MONO Input Channels (1 ~ 6)
There are CH1 through CH6, which comes with MIC IN
and LINE IN connector. Use the XLR MIC IN connector
to connect low noise microphones preamp and low level
signal, which also f48V phantom power, allowing
you to connect condenser microphones. Use the 1/4" TRS
LINE IN connector to connect either a microphone or a
line level instrument such as synthesizers, dr m machines,
u
effects processors...
Note: You shall never connect an unbalanced microphone
to the XLR connector if you do not want to damage both
the microphone and the mixer.
1
2 STEREO Input Channels (7 ~ 10)
DSP/FX
AUX2
POST
+10dB +10dB --
88
0dB
HIGH HIGH
MID MID
LOW LOW
MON
AUX1
PRE
PAN
+15dB +15dB
+15dB +15dB
12KHz 12KHz
2.5KHz 2.5KHz
80Hz 80Hz
+15dB +15dB
+10dB +10dB
+10dB +10dB
-20 dB
PAD
Right Right
-15dB -15dB
-15dB -15dB
-15dB -15dB
--
88
--
88
Left Left
0dB 0dB
0dB 0dB
0dB 0dB
0dB 0dB
0
dB
0
dB
LEVEL
3
4
5
6
7
8
3
-20dB PAD Button
Pressing this button will attenuate the input signal by 20dB.
In such way you can produce increased headroom and
reduce the risk of distortion because of level peaks at input
level when the input signal is quite hot.
4
EQUALIZER
APM80.1000 features a 3-band equalizer allowing you
adjust the high, mid and low frequencies separately on
each channel. All bands provide up to 15dB of boost or
cut, flat at the center detent.
HIGH
This is the treble control. You can use it to get rid of high
frequency noises or to boost the sound of cymbals or the
high harmonics of the human voice.
MID
This is the midrange control. It can affect most fundamental
frequencies of all musical instruments and human voice.
An attentive use of this control will give you a very wide
panorama of sound effects.
LOW
This is the bass control. It is used to Boost male voice or
kickdrum and bass guitar. Your system will sound much
bigger than what it is.
There are CH7 through CH10. They are organised in stereo
pair. Via the 1/4" TRS input connectors, you can connect the
outputs from stereo devices such as synthesizers, effects
processor or any stereo line level signal. If only the right jack
was connected, the input will operate in mono mode. Via the
XLR MIC IN connector, you can input the low level signal.
LINE IN
(bal.)
(MONO)
R
L