Alto | APM80.1000 | User`s manual | Alto APM80.1000 User`s manual

R
LTO
User's Manual
APM80.QUAD
POWERED BOX MIXER
www.altoproaudio.com
Version 1.0 JUNE 2007
English
IMPORTANT SAFETY INSTRUCTION
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
TO REDUCE THE RISK OF ELECTRIC SHOCK
PLEASE DO NOT REMOVE THE COVER OR
THE BACK PANEL OF THIS EQUIPMENT.
THERE ARE NO PARTS NEEDED BY USER
INSIDE THE EQUIPMENT. FOR SERVICE,
PLEASE CONTACT QUALIFIED SERVICE
CENTERS.
WARNING
To reduce the risk of electric shock
and fire, do not expose this equipment
to moisture or rain.
Dispose of this product should
not be placed in municipal waste
and should be separate collection.
11. Move this Equipment only with a cart,
stand, tripod, or bracket,
This symbol, wherever used, alerts you to the
specified by the
presence of un-insulated and dangerous voltages
manufacturer, or
within the product enclosure. These are voltages that
sold with the
may be sufficient to constitute the risk of electric
Equipment. When
shock or death.
a cart is used, use
This symbol, wherever used, alerts you to
caution when
important operating and maintenance instructions.
moving the cart /
Please read.
equipment
Protective Ground Terminal
combination to
AC mains (Alternating Current)
avoid possible
Hazardous Live Terminal
injury from tip-over.
ON: Denotes the product is turned on.
12. Permanent hearing loss may be caused by
OFF: Denotes the product is turned off.
exposure to \ extremely high noise levels.
CAUTION
The US. Government's Occupational Safety
Describes precautions that should be observed to
and Health Administration (OSHA) has
prevent damage to the product.
specified the permissible exposure to noise
1. Read this Manual carefully before operation.
level.
2. Keep this Manual in a safe place.
These are shown in the following chart:
3. Be aware of all warnings reported
with this symbol.
HOURS X DAY SPL EXAMPLE
4. Keep this Equipment away from water and
90 Small gig
8
moisture.
92 train
6
5. Clean it only with dry cloth. Do not use
95 Subway train
4
solvent or other chemicals.
97 High level desktop monitors
3
6. Do not damp or cover any cooling opening.
100 Classic music concert
2
Install the equipment only in accordance with
the Manufacturer's instructions.
102
1,5
105
1
7. Power Cords are designed for your safety. Do
110
0,5
not remove Ground connections! If the plug
does not fit your AC outlet, seek advice from
0,25 or less 115 Rock concert
a qualified electrician. Protect the power
According to OSHA, an exposure to high SPL in
cord and plug from any physical stress to
excess of these limits may result in the loss of
avoid risk of electric shock. Do not place
heat. To avoid the potential damage of heat, it is
heavy objects on the power cord. This could
cause electric shock or fire.
recommended that Personnel exposed to
equipment capable of generating high SPL use
8. Unplug this equipment when unused for long
hearing protection while such equipment is
periods of time or during a storm.
under operation.
9. Refer all service to qualified service personnel
The apparatus shall be connected to a mains
only. Do not perform any servicing other than
those instructions contained within the
socket outlet with a protective earthing
User's Manual.
connection.
10. To prevent fire and damage to the product,
use only the recommended fuse type as
indicated in this manual. Do not short-circuit
the fuse holder. Before replacing the fuse,
make sure that the product is OFF and
disconnected from the AC outlet.
The mains plug or an appliance coupler is used
as the disconnect device, the disconnect device
shall remain readily operable.
IN THIS MANUAL:
1.
2.
3.
4.
5.
6.
7.
8.
9.
INTRODUCTION................................................................................1
FEATURES.......................................................................................1
QUICK START..................................................................................4
CONTROL ELEMENTS......................................................................5
INSTALLATION & CONNECTION......................................................12
PRESET LIST.................................................................................16
BLOCK DIAGRAM..........................................................................17
TECHNICAL SPECIFICATIONS...........................................................18
WARRANTY..................................................................................19
1. INTRODUCTION
Thank you for your purchasing of the LTO APM80.QUAD 8-channel powered box mixer
with 24-bit digital multi-effect built-in. It is just one of the many LTO products that a
talented, multinational Team of Audio Engineers and Musicians have developed with their
great passion for music. Your APM80.QUAD is a remarkable compact powered mixer
that doesn't find many equals in the market today. With 6 microphone and 2 stereo
MIC/Line-level inputs for serious live performances, your APM80.QUAD also includes a
24-Bit digital multi-effect with 16 Factory Presets and 16 variations for every preset,
for a total of 256 different digital effects. There is a three bands EQ on all input
channels and separate Master EQ for Main Mix and Monitor Outputs. Use it for small
Gigs, for Church applications and for Conference.
Enjoy your APM80.QUAD and make sure to read this Manual carefully before operation!
2. FEATURES
6 MIC/Line input channels with gold plated XLR and balanced Line inputs
2 Stereo input channels with balanced TRS jacks
Ultra-low noise discrete MIC preamps with +48V phantom power
Extremely high headroom offering more dynamic range
Each input channel with -20 dB PAD, PAN and level control
3-band equalizer on input channels
2 AUX sends for built-in or external effects, on-stage monitor mix, or
headphone mixing
Built-in feedback terminator
9-band graphic EQ for MAIN / MONITOR
256 position multi-effect
2-track recording IN/OUT (PHONO)
Headphone output
Stereo Line-level output
4 500 watt EIAJ amplifiers
Output connector: 6.3 jack + 4 way-speakon
1
-
MIC IN (bal.)
LOW NOISE P
RE
A
LINE IN
(bal.)
CH 2
+10dB
LEVEL
Right
-
MIC IN (bal.)
RE
A
LINE IN
(bal.)
CH 3
+10dB
LEVEL
Right
LOW NOISE P
Left
-
+10dB
LEVEL
Right
PAN
+10dB
MIC IN (bal.)
LOW NOISE P
RE
A
LINE IN
(bal.)
CH 4
Left
-
Left
-
MIC IN (bal.)
LOW NOISE P
RE
A
LINE IN
(bal.)
CH 5
+10dB
LEVEL
Right
PAN
+10dB
-
-
MIC IN (bal.)
RE
A
LINE IN
(bal.)
CH 6
+10dB
LEVEL
Right
LOW NOISE P
Left
PAN
+10dB
-
LOW NOISE P
MIC IN (bal.)
L
+10dB
LEVEL
Right
RE
A
CH 7-8
(MONO)
R
-
Left
PAN
+10dB
-
PAN
+10dB
LEVEL
Right
+10dB
LOW NOISE P
MIC IN (bal.)
L
(MONO)
RE
A
CH 9-10
R
-
Left
-
M
M
M
M
M
M
M
M
MIC IN (bal.)
-
Left
PAN
+10dB
CLIP
6
5
4
14
-
11
15
10
9
1
7
3
6
5
4
+10dB
8
2
TO MON
-
AUX2
OUT
FOOT
SW.
TO MAIN
STEREO
RTN
+10dB
DSP
1. VOCAL 1
2. VOCAL 2
3. LARGE HALL
4. SMALL HALL
5. LARGE ROOM
6. SMALL ROOM
7. PLATE
8. TAPE REVERB
9. SPRING REVERB
10. MONO DELAY
11. STEREO DELAY
12. FLANGER
13. CHORUS
14. REVERB + DELAY
15. REVERB + FLANGER
16. REVERB + CHORUS
PRESETS:
12
13
16
DSP
MUTE
7
3
CH9-10
50
100
250
500
1K
2K5
5K
8K
50
100
250
500
1K
2K5
5K
8K
MAIN
TAPE IN TAPE OUT
TAPE TO
MONITOR
OUT
LEFT
MAIN OUT
16K
9
15
0
0
9
9
9
15
15
15
16K
9
15
9
0
9
15
15
0
9
15
RIGHT
OFF
LEVEL
500W 2 1000W 1 500W 1(R)
+
+
+
500W 2 1000W 1 500W 1(L)
+
1000W 1(MONO)
AMPLIFIER
MODE
+10dB
HEADPHONE
OUT
ON
-
LEVEL
+10dB
MAIN
-
MONITOR
PHANTOM
48V
FEEDBACK
TERMINATOR
-30
-10
0
10
FEEDBACK
TERMINATOR
-30
-10
0
10
APM80.QUAD
OPERATING
R
LTO
8
RE
A
LINE IN
(bal.)
CH 1
+10dB
LEVEL
Right
-
8
2
2000 WATT
LOW NOISE P
Left
PAN
+10dB
-
AUX2
POST
9
1
VARIATIONS
10
16
8
DSP/FX
11
15
DSP
MUTE
12
13
PRESETS
DSP
14
8
PAN
+10dB
AUX1
PRE
-
MON
+10dB
AUX1
PRE
-
MON
+10dB
AUX1
PRE
-
MON
+10dB
-
AUX1
PRE
+10dB
-
MON
+10dB
AUX1
PRE
+10dB
MON
+10dB
-
-
+15dB
AUX1
PRE
-15dB
MON
+10dB
-
+15dB
AUX1
PRE
-15dB
MON
+15dB
AUX1
PRE
-15dB
MON
+15dB
80Hz
-15dB
80Hz
+15dB
80Hz
-15dB
80Hz
+15dB
80Hz
-15dB
80Hz
+15dB
80Hz
-15dB
80Hz
+15dB
LOW
LOW
+15dB
LOW
-15dB
LOW
+15dB
LOW
-15dB
LOW
+15dB
LOW
-15dB
LOW
+15dB
2.5KHz
-15dB
2.5KHz
+15dB
2.5KHz
-15dB
2.5KHz
+15dB
2.5KHz
-15dB
2.5KHz
+15dB
2.5KHz
-15dB
2.5KHz
+15dB
MID
+15dB
12KHz
-15dB
MID
+15dB
12KHz
-15dB
MID
+15dB
12KHz
-15dB
MID
+15dB
12KHz
-15dB
MID
+15dB
12KHz
-15dB
MID
+15dB
12KHz
-15dB
MID
MID
+15dB
12KHz
-15dB
12KHz
+15dB
-
-15dB
-15dB
-15dB
HIGH
HIGH
-20 dB
PAD
HIGH
-20 dB
PAD
HIGH
-20 dB
PAD
HIGH
-20 dB
PAD
HIGH
-20 dB
PAD
HIGH
-20 dB
PAD
HIGH
-20 dB
PAD
IG
-20 dB
PAD
OT
L
DIGITAL POWER
SP
HT
8
P
P
P
P
P
P
P
P
2
HOOK
SMALL CLUB
UP
ACTIVE SPEAKERS
KEYBOARD
WIRELESS
MICROPHONE
DRUM MACHINE
LINE IN
(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
R
R
(MONO)
(MONO)
L
L
FOOT
SW.
TAPE TO
CH9-10
MAIN
MONITOR
OUT
TAPE IN TAPE OUT
LOW NOISE P
LOW NOISE P
RE
A
LOW NOISE P
RE
A
LOW NOISE P
RE
A
LOW NOISE P
RE
A
LOW NOISE P
RE
A
LOW NOISE P
RE
A
LOW NOISE P
RE
A
AUX2
OUT
RE
A
HEADPHONE
OUT
MAIN OUT
M
M
M
M
M
M
M
M
P
P
P
P
P
P
P
P
STEREO
RTN
MIC IN (bal.)
MIC IN (bal.)
MIC IN (bal.)
MIC IN (bal.)
MIC IN (bal.)
D/I BOX
MIC IN (bal.)
MIC IN (bal.)
LEFT
MIC IN (bal.)
RIGHT
D/I BOX
STAGE MONITORS
BASS
GUITAR
HOOK
CD PLAYER
COMPUTER SET-UP DIAGRAM
UP
PASSIVE SPEAKERS
KEYBOARD
WIRELESS
MICROPHONE
DRUM MACHINE
POWER AMPLIFIER
D1
SIG CLIP PROT
18
16
20
6
500W
SIG CLIP PROT
18
22
24
26
12
CH1
28
30 (dB)
16
20
2
22
24
26
12
6
CH2
28
30 (dB)
EQUALIZER
LINE IN
(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
LINE IN
(bal.)
R
R
(MONO)
(MONO)
L
L
FOOT
SW.
TAPE TO
CH9-10
MAIN
TAPE IN TAPE OUT
LOW NOISE P
LOW NOISE P
RE
A
LOW NOISE P
RE
A
LOW NOISE P
RE
A
LOW NOISE P
RE
A
LOW NOISE P
RE
A
LOW NOISE P
RE
A
LOW NOISE P
RE
A
AUX2
OUT
RE
A
MONITOR
OUT
HEADPHONE
OUT
MAIN OUT
M
M
M
M
M
M
M
M
P
P
P
P
P
P
P
P
STEREO
RTN
MIC IN (bal.)
MIC IN (bal.)
MIC IN (bal.)
MIC IN (bal.)
MIC IN (bal.)
MIC IN (bal.)
MIC IN (bal.)
LEFT
MIC IN (bal.)
RIGHT
STAGE MONITORS
D/I BOX
D/I BOX
MULTIEFFECT
GUITAR
CD PLAYER
BASS
3
3. QUICK START
This is the fastest way to get something out from your APM80.QUAD, if you have a
keyboard and a microphone.
a. Plug the microphone into Channel 1 MIC IN.
b. Turn down AUX and LEVEL controls on the input channel.
c. Turn down MONITOR and MAIN master controls.
d. Put the EQ controls on center position.
e. Connect 2 passive cabinets to the rear speakon jack or 2 active cabinets to the
front MAIN OUT connectors.
f. Turn on your APM80.QUAD.
g. Sing or speak into the microphone with normal volume and adjust the channel
LEVEL control of half.
h. If you like, you can add some equalization at this stage.
i. Turn up the MAIN LEVEL control until you reach the desired volume. The +10 LED
on the Master LED meter should flash only occasionally, otherwise you will hear the
distortion. If this LED is not active and you still hear distortion, please turn down a
little the input LEVEL control or reduce the output level of your source instrument.
j. Connect your stereo keyboard into channel 7/8 and repeat the sequence.
Here you are. It is your first gig with your APM80.QUAD.
4
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OT
L
IG
4. CONTROL ELEMENTS
HT
R
LINE IN
(bal.)
(MONO)
L
LOW NOISE P
LOW NOISE P
RE
A
M
P
P
2
1
-20 dB
PAD
10
HIGH
7
12KHz
-15dB
+15dB
MID
8
2.5KHz
-15dB
+15dB
LOW
9
80Hz
-15dB
+15dB
MON
AUX1
PRE
3 LEVEL Control
This control is used to adjust the overall level of
respective channel. The adjustable range goes from
to +10 dB.
RE
A
MIC IN (bal.)
MIC IN (bal.)
NOTE: Never try to connect a line-level signal to the
XLR MIC input when the phantom power is engaged, or
you may seriously damage your equipment.
2 MIC/LINE STEREO LINE INPUTS
These are channels 7/8 and 9/10. They are organised in
stereo pair and provided with XLR balanced socket and
1/4" TRS phone sockets. If you connect only the left jack,
the input will operate in mono mode, that is the mono
signal will appear on both input channels. You can use
these inputs with a stereo keyboard, drum machine, etc.
CH 7-8
CH 6
M
1 MIC/LINE MONO INPUT (1 to 6)
Your APM80.QUAD is equipped with 6 low-noise
microphone preamplifiers with optional phantom
power, 50 dB of Gain and over 90 dB of S/N ratio.
You can connect almost any type of microphone.
Dynamic microphones do not need phantom power.
Use phantom power only with condenser microphones
but make sure that the phantom power button is
disengaged before connecting the microphone. Phantom
power will not damage your dynamic microphones,
but it may damage tube or ribbon microphones, so
make sure to read the microphone instructions manual
before engaging phantom power. Use switch (19) to
activate/deactivate phantom power. These 6 channels
are also equipped with 1/4" TRS balanced/unbalanced
LINE-IN plugs to connect line-level instruments such
as keyboards, drum machines and effect devices.
6
+10dB
-
DSP/FX
AUX2
POST
5
+10dB
-
PAN
4 PAN
This is the PANORAMA control, or balance control. You
can adjust the stereo image of the signal via this control.
Keep this control in center position and your signal will
be positioned in the middle of stage. Turn this control
fully counter clockwise and the signal will be present only
on the left speaker and vice-versa. Of course a large
number of intermediate positions are available.
4
Left
Right
LEVEL
3
-
+10dB
CH 9-10
5
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4. CONTROL ELEMENTS
HT
5 DSP/FX
The AUX2 control is configured as POST-FADER, so the audio signal will be affected
by channel LEVEL control and sent to the resident digital multi-effect. Via the
AUX2 OUT jack, the AUX2 signal can be sent to an external effects device, and in
such case the resident digital multi-effects will be automatically disconnected.
6 MON/AUX1
Your APM80.QUAD has two auxiliary sends which can be used for sending signals
to external or internal effects devices or for creating a monitor mix. They are
used to adjust the level of respective channel signal sent to AUX bus, and the
adjustable range goes from - to +10dB. The AUX1 control is configured as
PRE-FADER, which means that the signal is sent out before reaching the
channel fader. It is used to feed stage monitors in a live situation, or for a
headphone mix in recording application.
EQUALIZATION
You have three EQ controls for each mono and stereo input channel each providing
+/-15 dB of boost and cut. The signal will be unaffected when the controls on the
center position. You may use an external equalizer to make up a mix properly but
a master equalizer will not have effect on a single channel and you may overload
the signal easily. Individual EQ will give you a much better control on single tracks.
7 -HI
If you turn this control up, you will boost all the frequencies above 12 kHz (shelving
filter). You will add transparency to vocals and guitar and also make cymbals
crispier. Turn the control down to cut all frequencies above 12 kHz. In such way
you can reduce sibilances of human voice or reduce the hiss of a Tape player.
8 -MID
This is a peaking filter and it will boost/cut frequencies with their center at
2.5 kHz. This control will affect especially upper male and lower female vocal
ranges and also the harmonics of most musical instruments.
9 -LOW
If you turn this control up you will boost all frequencies below 80 Hz. You will
give more punch to bass drums and bass guitar; and you will make the male
vocalist more "macho". Turn it down, and you will cut all the frequencies below
80 Hz. In this way you can avoid low-frequency vibrations and resonance thus
preserving the life of your woofers.
10 -20 dB PAD
Pressing this button will attenuate the input signal by 20 dB. 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.
6
IG
4. CONTROL ELEMENTS
HT
MASTER SECTION
18
OPERATING
15
15
10
9
9
0
-10
0
0
9
9
15
15
MONITOR
13
LEVEL
-30
-
50
100
250
500
1K
2K5
5K
8K
8
OT
L
+10dB
16K
FEEDBACK
TERMINATOR
11
15
15
10
9
9
0
-10
0
0
9
9
15
15
17
LEVEL
16
-30
-
50
100
250
500
1K
2K5
5K
8K
16K
FEEDBACK
TERMINATOR
15
12
MAIN
8
SP
+10dB
14
11 STEREO GRAPHIC EQ
Your APM80.QUAD is equipped with two graphic EQs with 9 adjustable bands each;
one is for the MAIN MIX and the other for the MONITOR MIX. Via the faders, you
can boost or cut the selected frequency by +/-15 dB at the indicated frequencies.
When all faders are at the center position, the equalizer will do nothing.
12 FEEDBACK TERMINATOR Button (MONITOR MIX)
Pressing this button the feedback detection function will be activated in the
monitor signal path. Feedback will be identified at a certain frequency when
the correspondent fader LED lights up. Feedback will produce an unpleasant
speaker "howling" or "whistling". In this case, in order to eliminate feedback,
you need to turn down the corresponding fader until feedback disappears.
13 MONITOR LEVEL LED Display
This LED display will show you the monitor output level. Make sure that the
+10 LED only lights up occasionally. The optimal level is when the -10 and
0 LED light up. If only the -30 LED lights up or even doesn't come to life, your
S/N ratio will be degraded.
14 FEEDBACK TERMINATOR Button (MAIN MIX)
Pressing this button the feedback detection function will be activated in the
Main Mix signal path. Feedback will be identified at a certain frequency when
the correspondent fader LED lights up. Feedback will produce an unpleasant
speaker "howling" or "whistling". In this case, in order to eliminate feedback,
you need to turn down the corresponding fader until feedback disappears.
7
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4.
3. CONTROL ELEMENTS
HT
15 MONITOR LEVEL Control
This control is used to adjust the level of the monitor output.
16 MAIN MIX LEVEL Control
This control is used to adjust the overall volume of the main mix output.
17 MAIN MIX LEVEL LED Display
This LED display will show you the Main Mix output level. Make sure that the
+10 LED only lights up occasionally. The optimal level is when the -10 and 0 LED
light up. If only the -30 LED lights up or even doesn't come to life your S/N ratio
will be degraded.
PHANTOM
48V
18 OPERATING LED Display
The LED indicates when the power
19
is switched on in your APM80.QUAD.
AMPLIFIER
MODE
20
OFF
ON
500W 2 1000W 1 500W 1(R)
+
+
+
500W 2 1000W 1 500W 1(L)
+
1000W 1(MONO)
19 PHANTOM +48V Switch
Activating this switch you will apply +48V phantom power only to the 8 XLR
microphone inputs and only to the XLR MIC sockets. Never plug in a microphone
when phantom power is already on. Before turning phantom power on, make
sure that all faders are all the way down. In this way you will protect your stage
monitors and main loudspeakers.
20 AMPLIFIER MODE Switch
This switch provides three modes: MAIN/MAIN, MAIN/MONITOR and BRIDGE.
Select any one of these modes to route the signals to the corresponding jacks
according to the speaker connection at speaker jacks on the rear panel. You
will find more details about the Amplifier Mode switch later on in this Manual.
MASTER SECTION INPUT and OUTPUT Jacks
26
24
22
23
MAIN OUT
HEADPHONE
OUT
TAPE TO
CH9-10
MAIN
TAPE IN TAPE OUT
AUX2
OUT
MONITOR
OUT
STEREO
RTN
LEFT
25
27 28
RIGHT
21
8
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4. CONTROL ELEMENTS
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21 MONITOR OUT Jack
Use this balanced MONITOR jack to connect the input of an external amplifier
or active monitor speaker.
22 MAIN OUT Jacks
These jacks are used to output the Main Mix signal to an external amplifier or
active speaker.
23 HEADPHONE OUT Jack
This is a stereo phone type output jack. It is used to send out the Main Mix
signal to a pair of headphones.
24 AUX2 OUT Jack
The phone jack is used to output the line level signal of the AUX2 post fader
bus. You can use it to feed the inputs of a stereo multi-effects (you will need
a Y-type cable).
25 STEREO RTN. Jack
Use this stereo phone jack to return the stereo signal of an effect unit into the
Main Mix. You can also use it as the extra auxiliary input.
26 TAPE TO Select Switch
If you position this switch to the left you will route the signal fed into the TAPE
IN sockets into CH9~10 path, and the signal will be affected by channel level
control, channel EQ, DSP send, and MAIN level control, while positioning this
switch to the right will route the TAPE IN signal into Main Mix bus. In this case
signal will be affected only by Main level control.
27 TAPE IN Connectors
Your APM80.QUAD features dual RCA jacks for TAPE IN (left and right). Typically
these connectors are used to feed into the mixer the stereo signal from a CD
Player, Tape or DAT Player, iPod, MP3 and so on. It is useful to use these inputs
this way if you stop the gig for a couple of beers or more.
28 TAPE OUT Connectors
Your APM80.QUAD also includes dual RCA jacks for stereo out (left and right).
Via these jacks, you can route the Main Mix signal into a tape recorder or DAT
for recording your session.
9
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4. CONTROL ELEMENTS
HT
DSP SECTION
There is a powerful 24-bit/256 preset digital multi-effects included in your
APM80.QUAD. Effects include reverbs, chorus, flanger, delay and combinations of
the above.
29 PRESETS Control
This knob will select one of the 16 Factory Presets.
DSP
30 DSP MUTE Button
This button is used to activate/deactivate the digital
multi-effect. Alternatively, you can also use the DSP
FOOTSWITCH for a faster operation.
PRESETS
16
1
2
15
3
4
14
29
5
13
6
12
7
11
10
9
8
CLIP
31 CLIP/MUTE LED
This LED will flash when the signal input into the
digital multi-effect is too strong. When the digital
effect module is muted by the (30) button the LED
also lights up.
DSP
MUTE
MUTE
VARIATIONS
16
1
2
15
3
11
7
4
14
6
12
10
9
8
This control is used to control the volume of the
processed signal sent to Monitor Mix, which can
be varied from - to +10dB.
34 DSP TO MAIN
This control is used to control the volume of the
processed signal sent to Main Mix bus, which can
be varied from - to+10dB.
DSP
-
8
TO MON
33
+10dB
PRESETS:
1. VOCAL 1
2. VOCAL 2
3. LARGE HALL
4. SMALL HALL
5. LARGE ROOM
6. SMALL ROOM
7. PLATE
8. TAPE REVERB
9. SPRING REVERB
10. MONO DELAY
11. STEREO DELAY
12. FLANGER
13. CHORUS
14. REVERB + DELAY
15. REVERB + FLANGER
16. REVERB + CHORUS
DSP
TO MAIN
-
8
33 DSP TO MON
32
5
13
32 VARIATIONS Control
For each of the 16 Factory Presets you can apply
up to 16 variations, so in total your APM80.QUAD
offers 256 different presets. If you want to know
which Parameter is modified by this control, please
look at the chart 6 (Preset List).
30
31
34
+10dB
35
FOOT
SW.
35 DSP FOOTSWITCH Socket
This 1/4" phone jack can be used to connect an external optional footswitch to
turn on/off the onboard digital multi-effect.
10
SP
OT
L
IG
4. CONTROL ELEMENTS
HT
REAR PANEL
R
LTO
L
L1
1+ +
1
POWERED MIXER
MODEL: APM80.QUAD
BRIDGE
1+ +
2+
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WARNING: SHOCK HAZARD - DO NOT OPEN
AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR
CAUTION:
AC
STEREO MODE:
BRIDGE MODE:
MONO MODE:
4
500 W @ 4 OHM
2
1000 W @ 8 OHM
MONO
INPUT
BRIDGE
+ 1+
100 ~120VAC~60Hz
220 ~240VAC~50Hz
RATED POWER CONSUMPTION: 1800W
(4 OHM MIN. LOAD)
2+
110-120V
REPLACE WITH THE SAME TYPE FUSE AND RATING
DISCONNECT SUPPLY CORD BEFORE CHANGING FUSE
LOCK
36
2
OFF
L2
LOCK
POWER
ON
SPEAKERS
L1
L2
2+ +
(8 OHM MIN. LOAD)
1
1000 W @ 8 OHM
2
500 W @ 4 OHM
(8 OHM MIN. LOAD)
220-240V
(4 OHM MIN. LOAD)
CLASS 2 WIRING MAY BE USED
R
R1
100~120V: T15AL 250V
FUSE:
220~240V: T10AL 250V
R1
R2
1+ +
1
R2
VOLTAGE SELECTOR
2+ +
2
MODEL
~100-120
VAC
~220-240
VAC
Apparaten skall anslutas
till jordat uttag nar den
ansluts till ett natverk
SERIAL
LOCK
37
BRIDGE
1+ +
2+
39
38
36 POWER ON/OFF Switch
This switch is used to turn the main power ON and OFF.
37 AC Inlet with FUSE Holder
Use it to connect your APM80.QUAD to the main AC with the supplied AC cord.
Please check the voltage available in your country and how the voltage for your
APM80.Q is configured before attempting to connect your APM80.QUAD to the
main AC.
38 SPEAKER Jacks
These jacks are used to connect speakers. They are configured with 4-way
speakon connectors and 1/4" phone jacks. You can determine the signal that is
output to these jacks according to the setting of the AMPLIFIER MODE select
switch, as we will describe in a moment.
NOTE: In order to avoid damage to the built-in amplifier, please pay attention
to the allowed impedance of the speaker. Very low load impedances may damage
the amplifier. Look at this plate on your APM80.QUAD for reference.
STEREO MODE:
4
500 W @ 4 OHM
BRIDGE MODE:
2
1000 W @ 8 OHM
1
1000 W @ 8 OHM
2
500 W @ 4 OHM
MONO MODE:
(4 OHM MIN. LOAD)
(8 OHM MIN. LOAD)
(8 OHM MIN. LOAD)
(4 OHM MIN. LOAD)
CLASS 2 WIRING MAY BE USED
39 AC Select Switch
This switch has two choices for voltage, 115 VAC or 230 VAC.
NOTE: If you want to switch the voltage, remove the cover plate with a screwdriver
and set the switch to the 115VAC or 230VAC as the actual requirement. Refer to
the specification page 18 for instructions of replacing fuse.
11
5. INSTALLATION AND CONNECTION
Ok, you have got to this point and you are now in the position to successfully operate
your APM80.QUAD. However, we advise you to read carefully the following section to
be the real master of your own mix. Not paying attention enough to the input signal
level, to the routing of the signal and the assignment of the signal will result in unwanted
distortion, a corrupted signal or no sound at all. So you should follow this procedure
for every single channel:
1. Turn down all Input and output gain controls.
2. Connect phantom powered microphones before switching on the +48Volt phantom
power switch.
3. Set the output level of your APM80.QUAD or the connected power amplifier at no
more than 75%.
4. Now, set the MONITOR level at no more than 50%. In this way you will be able to
hear later what you are doing connecting a pair of headphones or a pair of powered
studio monitor speakers.
5. Position EQ controls on middle position.
6. Position panoramic (PAN) control on center position.
7. Increase the input gain properly for maintaining the good headroom and ideal dynamic
range.
8. Depending on the actual application, turn slowly the input and output level controls
for obtaining the maximum gain before distortion.
9. Now repeat the same sequence for all input channels. The main LED meter could
move up into the red section. In this case you can adjust the overall output level
through the MAIN MIX control.
Audio Connections
You can connect unbalanced equipment to balanced inputs and outputs. Simply follow
these schematics.
Sleeve
Tip
Ring
Ring=Right Signal
Strain Clamp
Tip=Left Signal
Sleeve=Ground/Screen
Use for Headphone
1/4" Stereo (TRS) Jack Plug
Sleeve
Tip
Tip=Signal
Strain Clamp
Sleeve=Ground/Screen
Use for Mono Line In, Mono 1/4"Jack Plugs
1/4" Mono (TS) Jack Plug
12
5. INSTALLATION AND CONNECTION
Sleeve
Ring=Return Signal
Tip
Ring
Strain Clamp
Tip=Send Signal
Sleeve=Ground/Screen
Use for Insert Points
1/4" Stereo (TRS) Jack Plug
2=Hot(+)
2
3
1
1=Ground/Screen
2
2=Hot(+)
3
1
1=Ground/Screen
3=Cold(-)
3=Cold(-)
Use for Balanced Mic Inputs
(For unbalanced use, connect pin 1 to 3)
Use for Main output
(For unbalanced use, leave pin3 unconnected)
3-pin XLR Male Plug
3-pin XLR Line Socket
(seen from soldering side)
(seen from soldering side)
SPEAKERS CONNECTION
Please use only the power connectors to make connections with other signal
source equipment for the passive speaker cabinets. The power connector has
four terminals: 1+, 1-, 2+, 2-.
Now some tips how to use the AMPLIFIER MODE switch.
MAIN+MAIN Mode Connection
12+
1+
1-
2-
A
2-
1+
2+
C
1-
2-
1+
B
2+
TIP SLEEVE
1
SLEEVE TIP
Tip
Sleeve
1
1
A2
2
1
B1
2
2
1
1 C
2
2
Tip
Sleeve
13
5. INSTALLATION AND CONNECTION
Main Speaker (4 )
Main Speaker (4 )
L
L1
SPEAKERS
L2
L1
L2
2+ +
2
LOCK
1
1+ +
1
BRIDGE
1+ +
2+
AMPLIFIER
MODE
MONO
LOCK
BRIDGE
+ 1+
2+
500W 2 1000W 1 500W 1(R)
+
+
+
500W 2 1000W 1 500W 1(L)
+
1000W 1(MONO)
R
R1
R1
R2
1+ +
1
LOCK
R2
2+ +
2
BRIDGE
1+ +
1
2+
Use either the speakon
jacks or phone jacks
Main Speaker (4 )
Main Speaker (4 )
MAIN + MONITOR Mode Speaker Connection
1+
2+
1-
2-
1-
2-
1+
2+
2
1
1
2
2
1
1
2
2
Main Speaker (8 )
L
L1
1+ +
1
L2
L2
2+ +
2
LOCK
2
SPEAKERS
L1
BRIDGE
1+ +
2+
AMPLIFIER
MODE
MONO
LOCK
BRIDGE
+ 1+
2+
500W 2 1000W 1 500W 1(R)
+
+
+
500W 2 1000W 1 500W 1(L)
+
1000W 1(MONO)
R
R1
R1
R2
1+ +
1
2
LOCK
R2
2+ +
2
BRIDGE
1+ +
2+
Use either the speakon jacks
or phone jacks
Monitor Speaker (8 )
14
5. INSTALLATION AND CONNECTION
1-
1
1
2
2
1
1
2
2
1
1
2
2
1+
1-
2-
1+
2+
2+
2
1+
2-
1-
2-
1+
2+
2+
3
TIP SLEEVE
SLEEVE TIP
Tip
Sleeve
Tip
Sleeve
L
L1
1+ +
1
3
SPEAKERS
L2
L1
L2
2+ +
2
LOCK
2-
1
1
2
2
1-
BRIDGE Mode Speaker Connection
BRIDGE
1+ +
2+
MONO
2
2+
R
R1
3
500W 2 1000W 1 500W 1(R)
+
+
+
500W 2 1000W 1 500W 1(L)
+
1000W 1(MONO)
LOCK
BRIDGE
+ 1+
R1
R2
1+ +
1
R2
2+ +
2
LOCK
AMPLIFIER
MODE
BRIDGE
1+ +
2+
(4 )
(8 )
(4 )
Main Speaker
15
6. PRESET LIST
NO.
Preset
Description
Controllable Parameter
Parameter
Variable range
1
VOCAL1
Simulate a room with small delay time.
Decay time
Pre-delay
0.8~1.1s
0~79ms
2
VOCAL2
Simulate a small space with slight decay time
Decay time
Pre-delay
0.8~2.5s
0~79ms
3
LARGE HALL
Simulate a large acoustic space of the sound.
Decay time
Pre-delay
3.6~5.4s
23~55ms
4
SMALL HALL
Simulate a stage space of the sound.
Decay time
Pre-delay
1.0~2.9s
20~45ms
5
LARGE ROOM
Simulate a studio room with many early reflections
Decay time
Pre-delay
2.9~4.5s
23~55ms
6
SMALL ROOM
Simulate a bright studio room.
Decay time
Pre-delay
7
PLATE
Simulate the transducers sound like classic bright
vocal plate.
Decay time
Pre-delay
0.7~2.1s
20~45ms
0.6~6.1s
10ms
8
TAPE REVERB
Simulate a record head and multiple playback heads
at intervals along the tape.
Decay time
Pre-delay
1.3~5.4s
0~84ms
9
SPRING REVERB Simulate the analog transducers' springs lightly
stretched sound.
Decay time
Pre-delay
1.3~5.4s
0~35ms
10
MONO DELAY
Reproduce the sound input on the output after a
lapse of time.
11
STEREO DELAY
Recreate the input sound on the stereo output with
different time.
12
FLANGER
Simulate to play with another person carrying
out same the notes on the same instrument
Rate
0.16~2.79Hz
13
CHORUS
Recreate the illusion of more than one instrument
from a single instrument sound
Rate
0.5~5Hz
14
REV.+DELAY
Delay with room effect
15
REV.+FLANGER Stereo chorus and large room reverb
16
REV.+CHORUS
Simulate the sound effect achieved by the
rotating horn speakers and a bass cylinder
Period
Period
Feedback
60~650ms
210~400ms
37~73%
Decay period
Rev.decay time
211~375ms
1.0~2.9s
Flanger Rate
Rev.decay time
0.16~2.52Hz
Chorus rate
Rev.decay time
0.5~4.74Hz
1.5~2.9s
16
7. BLOCK DIAGRAM
17
8. TECHNICAL SPECIFICATION
Mono input channels
Microphone input
Frequency response
Distortion (THD & N)
Gain
SNR (Signal to Noise Ratio)
Line input
Frequency response
Distortion (THD & N)
Gain
Stereo input channels
Line input
Frequency response
Distortion (THD & N)
Impedances
Microphone input
Channel Insert return
All other inputs
Tape out
All other output
Equalization
Hi shelving
Mid bell
Low shelving
DSP Section
A/D and D/A converters
DSP resolution
Type of effects
Presets
Controls
Main Mix Section
Noise
(bus
noise)
Noise
(Bus
noise)
Max output
AUX Sends max out
Output Power
500W 2+500 2 Mode
electronically balanced, discrete input configuration
10 Hz to 55 kHz, +/ 3 dB
0.006% at +4 dBu, 1 kHz
50 dB (MIC)
>90 dB
electronically balanced
10 Hz to 55 kHz, +/ 3 dB
0.04% at +4 dBu, 1 kHz
30 dB
Unbalanced
10 Hz to 55 kHz, +/ 3 dB
0.006% at +4 dBu, 1 kHz
1.4 kOhm
2.5 kOhm
10 kOhm or greater
1 kOhm
120 Ohm
+/
+/
+/
15 dB @12 kHz
15 dB @ 2.5 kHz
15 dB @ 80 Hz
24-bit
24-bit
Hall, Room, Vocal & Plate REVERBS
Mono & Stereo DELAY (max DELAY TIME 650ms)
Chorus, Flanger & Reverb MODULATIONS
REVERB+DELAY, REVERB+CHORUS,
REVERB+FLANGER combinations
256
16-position PRESET Selector
16-position VARIATION selector
CLIP LED
MUTE SWITCH with LED indicator
Fader
0 dB,
all input
channels
assigned
set to
Fader
0 dB,
channels
muted:
85dBrand
(ref.:+4dBu)
UNITY gain: 71 dBr (ref.:+4 dBu)
+27 dBu balanced ,
+22 dBu unbalanced, 1/4" jacks
+22 dBu
480 W 4(EIAJ)@4 Ohm
224 W 4(EIAJ)@8 Ohm
1000W 1+1000 1 Mode
976 W 2(EIAJ)@8 Ohm
500W 1(R)+500 1(L)+1000W(MONO) Mode
521 W 2(EIAJ)@4 Ohm+937 W 1(EIAJ)@8 Ohm
Power Supply
100-120 VAC~60 Hz
210-240 VAC~50 Hz
Main voltage
Fuse
100-120 V: T15A
210-240 V: T10A
Physical
Dimension(W D H)
550 220 310 mm(8.66" 12.20" 21.65")
Net Weight
Net: 9.3 Kg(20.50 lb)
Gross: 12.1 Kg(26.67 lb)
18
9. WARRANTY
1. WARRANTY REGISTRATION CARD
To obtain Warranty Service, the buyer should first fill out and return the enclosed
Warranty Registration Card within 10 days of the Purchase Date.
All the information presented in this Warranty Registration Card gives the
manufacturer a better understanding of the sales status, so as to provide a
more effective and efficient after-sales warranty service. Please fill out all the
information carefully and genuinely, miswriting or absence of this card will void
your warranty service.
2. RETURN NOTICE
2.1 In case of return for any warranty service, please make sure that the
product is well packed in its original shipping carton, and it can protect your
unit from any other extra damage.
2.2 Please provide a copy of your sales receipt or other proof of purchase with
the returned machine, and give detail information about your return address
and contact telephone number.
2.3 A brief description of the defect will be appreciated.
2.4 Please prepay all the costs involved in the return shipping, handling and
insurance.
3. TERMS AND CONDITIONS
3.1 LTO warrants that this product will be free from any defects in materials
and/or workmanship for a period of 1 year from the purchase date if you
have completed the Warranty Registration Card in time.
3.2 The warranty service is only available to the original consumer, who purchased
this product directly from the retail dealer, and it can not be transferred.
3.3 During the warranty service, LTO may repair or replace this product at its
own option at no charge to you for parts or for labor in accordance with the
right side of this limited warranty.
3.4 This warranty does not apply to the damages to this product that occurred
as the following conditions:
Instead of operating in accordance with the user's manual thoroughly, any abuse
or misuse of this product.
Normal tear and wear.
The product has been altered or modified in any way.
Damage which may have been caused either directly or indirectly by another
product / force / etc.
Abnormal service or repairing by anyone other than the qualified personnel or
technician.
And in such cases, all the expenses will be charged to the buyer.
3.5 In no event shall LTO be liable for any incidental or consequential damages.
Some states do not allow the exclusion or limitation of incidental or
consequential damages, so the above exclusion or limitation may not apply to
you.
3.6 This warranty gives you the specific rights, and these rights are compatible
with the state laws, you may also have other statutory rights that may vary
from state to state.
19
SEIKAKU TECHNICAL GROUP LIMITED
NO. 1, Lane 17, Sec. 2, Han Shi West Road, Taichung 40151, Taiwan
http://www.altoproaudio.com Tel: 886-4-22313737
email: alto@altoproaudio.com Fax: 886-4-22346757
All rights reserved to ALTO. All features and content might be changed
without prior notice. Any photocopy, translation, or reproduction of part of this
manual without written permission is forbidden. Copyright c 2007 Seikaku Group
NF02927-1.0
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