User's Manual
S-16
16-CHANNEL MIXING CONSOLE
R
LTO
www.altoproaudio.com
Version 2.2 August 2004
English
SAFETY RELATED SYMBOLS
CAUTION
RISK OFELECTRIC SHOCK
DO NOTOPEN
This symbol, wherever used, alerts you to the presence of un-insulated and dangerous voltages within the product enclosure. These are voltages that
may be sufficient to constitute the risk of electric
shock or death.
This symbol, wherever used, alerts you to important operating and maintenance instructions.
Please read.
Protective Ground Terminal
AC mains (Alternating Current)
Hazardous Live Terminal
ON: Denotes the product is turned on.
OFF: Denotes the product is turned off.
WARNING
Describes precautions that should be observed to
prevent the possibility of death or injury to the user.
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.
Protective Ground
Before turning the product ON, make sure that it is
connected to Ground. This is to prevent the risk of
electric shock.
Never cut internal or external Ground wires. Likewise,
never remove Ground wiring from the Protective
Ground Terminal.
Operating Conditions
Always install in accordance with the manufacturer's
instructions.
To avoid the risk of electric shock and damage, do
not subject this product to any liquid/rain or moisture.
Do not use this product when in close proximity to
water.
Do not install this product near any direct heat source.
Do not block areas of ventilation. Failure to do so
could result in fire.
Keep product away from naked flames.
CAUTION
Describes precautions that should be observed to
prevent damage to the product.
WARNING
Power Supply
Ensure that the mains source voltage (AC outlet)
matches the voltage rating of the product. Failure
to do so could result in damage to the product and
possibly the user.
Unplug the product before electrical storms occur
and when unused for long periods of time to reduce
the risk of electric shock or fire.
External Connection
Always use proper ready-made insulated mains
cabling (power cord). Failure to do so could result
in shock/death or fire. If in doubt, seek advice from
a registered electrician.
Do Not Remove Any Covers
Within the product are areas where high voltages
may present. To reduce the risk of electric shock do
not remove any covers unless the AC mains power
cord is removed.
Covers should be removed by qualified service
personnel only.
No user serviceable parts inside.
Fuse
To prevent fire and damage to the product, use only
IMPORTANT SAFETY INSTRUCTIONS
Read these instructions
Follow all instructions
Keep these instructions. Do not discard.
Heed all warnings.
Only use attachments/accessories specified by the
manufacturer.
Power Cord and Plug
Do not tamper with the power cord or plug. These are
designed for your safety.
Do not remove Ground connections!
If the plug does not fit your AC outlet seek advice from
a qualified electrician.
Protect the power cord and plug from any physical
stress to avoid risk of electric shock.
Do not place heavy objects on the power cord. This
could cause electric shock or fire.
Cleaning
When required, either blow off dust from the product
or use a dry cloth.
Do not use any solvents such as Benzol or Alcohol.
For safety, keep product clean and free from dust.
Servicing
Refer all servicing to qualified service personnel only.
Do not perform any servicing other than those instructions contained within the User's Manual.
1
PREFACE
Dear Customer:
Thank you for choosing the S-16 16-Channel Mixing Console, which is the result of our AUDIO TEAM'sLTO LTO
endeavours.
For the AUDIO TEAM, music and audio is more than a profession, it is a passion and an obsession!
LTO
We have, in fact, been designing professional audio products for a number of years in cooperation with many of the
world's major brands.
The line represents unparalleled analogue and digital products made by musicians, for musicians. With ourLTO
design centres in Italy, the Netherlands, and the United Kingdom we provide you with world-class designs, while our
software development teams continue to develop an impressive range of audio specific algorithms.
By purchasing our products you become the most important member of our AUDIO TEAM. We wouldLTO LTO
like to share with you our passion for what we design and invite you to make suggestions, which will aid us in developing
future products for you. We guarantee to you our commitment for quality, continual research and development, and
of course the best prices.
The S-16 is an extremely flexible, ultra-low noise 16-channel console, configured with 8 mono and 8 stereoLTO
input channels. Each channel is equipped with a variety of key features including a warm, natural sounding EQ, Peak
LEDs, MUTE/ALT 3-4, SOLO-in-place and high quality faders.
We would like to thank all the people who made the S-16 16-Channel Mixing Console possible, especially toLTO
our designers and staff. It is their passion for music and professional audio that has made it possible for us to
LTO
offer you, our most important team member, our continued support.
Thank you very much.
LTO AUDIO TEAM
2
TABLE OF CONTENTS
1.INTRODUCTION......................................................................................................................................................4
2.FEATURES............................................................................................................................................. ................5
3.GETTING STARTED.................................................................................................................................................6
4.CONTROL ELEMENTS...........................................................................................................................................7
4.1 The mono MIC/LINE channel.......................................................................................................................8
4.2 INPUT LEVEL setting..................................................................................................................................8
4.3 LOW CUT FILTER........................................................................................................................................8
4.4 STEREO INPUTS.........................................................................................................................................9
4.5 +4dBu / -10dBV............................................................................................................................................9
4.6 PHONES......................................................................................................................................................9
4.7 EQUALISER..................................................................................................................................................9
4.8 AUX SEND .................................................................................................................................................10
4.9 PAN..............................................................................................................................................................10
4.10 MUTE / ALT 3-4 .........................................................................................................................................10
4.11 SOLO ........................................................................................................................................................10
4.12 SOLO LED .................................................................................................................................................10
4.13 PEAK..........................................................................................................................................................11
4.14 FADER........................................................................................................................................................11
4.15 INSERT.......................................................................................................................................................11
4.16 MAIN SECTION.........................................................................................................................................11
4.17 REAR PANEL ............................................................................................................................................14
5.INSTALLATION & CONNECTION.............................................................................................................................15
6.FOR THE EXPERTS WHO WANT TO KNOW MORE...............................................................................................18
7.SYSTEM BLOCK DIAGRAMS.................................................................................................................................19
8.TECHNICAL SPECIFICATIONS................................................................................................................................20
9.WARRANTY..............................................................................................................................................................21
3
1. INTRODUCTION
Your S-16 is the "big brother" of one of the most popular and best selling mixer in the world, S-8, that has been sold
already in terms of thousands of units worldwide. Despite its compact dimensions, great performances and sound
quality are insured thanks to the specification of the components used and the building quality.
Your S-16 is packed with features that can not be found in other consoles of its size: 8 Mono (these are provided with
Ultra Low Noise microphone preamplifiers and Phantom Power at +48 Volt) and 8 stereo input channels are provided,
and each of mono channels is provided with a 3 bands MID sweep equaliser, each of stereo channels is provided with
a 4 bands fixed frequency equaliser.
Your S-16 is very easy to operate but we advise you to go through each Section of this Manual carefully. In this way
you will get the best out of your S-16.
4
2. FEATURES
The S-16 16-Channel Mixing Console is designed for the professional application, and presents with the following
specific features:
. Ultra-low noise 16-channel 2+2-bus mixing console
.
8 MIC input channels with gold-plated XLRs and phone connectors
.
4 stereo input channels with balanced TRS jacks
.
2 stereo AUX returns for additional functionality
.
Ultra-low noise discrete MIC preamps with +48V Phantom power
.
Independent main mix, control room and headphone outputs
.
Peak LEDs on each channel
.
Low noise, high headroom
.
Balanced inputs and main outputs
.
PRE and POST fader AUX routing for external effects and monitoring
.
2-Track inputs assignable to Main Mix, Phones/Control Room outputs
. Switchable low-cut filter on each mono channel
.
+4dBu/-10dBV on each stereo channel
.
Mute/Alt 3-4, Solo function on each channel
.
Inserts on MIC channel
.
12-segment bar-graph meters for optimum reading of the output signal
.
High quality faders and sealed potentiometer
5
3. GETTING STARTED
3.1 Please check the AC Voltage available in your Country before connecting your S-16 to the AC socket.
3.2 Be sure that the main power switch is turned off before connecting the Mixer to the AC socket. Also, you should
make sure that all Input and Output Controls are turned down. This will avoid damages to your speakers and avoid
excessive noise.
3.3 Before turning on the S-16 you shall connect it to a power amplifier and turn-on the mixer BEFORE the power amplifier. Once you have finished your working session you shall turn the mixer off AFTER the power amplifier.
3.4 Before disconnecting the S-16 always turn-off the Power switch.
3.5 Do not use solvents to clean your S-16. A dry and clean cloth will be OK.
6
4. CONTROL ELEMENTS
12
LINE
LOW CUT
75Hz
18dB/Oct
EQ
12kHz
MID
LOW
80Hz
AUX
POST
(PRE)
PAN
MUTE /
ALT3-4
10
dB
5
0
-5
-10
-15
-15
-20
-30
-40
-60
MIC 6
12
3
BAL OR BAL OR
LINE IN 6
TRIM
HI
-15
-15
1
POST
PRE
-
2
-
LINEIN7
TRIM
-45dB
LINE
0dB
LOW CUT
75Hz
18dB/Oct
EQ
12kHz
LOW
80Hz
AUX
0
HI
-15
0
MID
0
-15
0
1
POST
PRE
-
0
2
POST
(PRE)
-
0
+15
0
0
+15
0
+15
0
+15
PAN
LEFT
SOLO
LEFT
RIGHT
MUTE /
ALT3-4
SOLO
PEAK PEAK PEAK PEAK
10
dB
5
0
-5
-10
-15
-20
-30
-40
-60
MIC 1
3
LINE IN 1
TRIM
-45dB
60dB 60dB 60dB 60dB 60dB 60dB60dB 60dB
0dB
0
-15
+15
0
800
8kHz100Hz 8kHz100Hz 8kHz100Hz 8kHz100Hz 8kHz100Hz 8kHz100Hz 8kHz100Hz 8kHz100Hz
0
+15
-15
0
1
-
+15
0
2
-
+15
MIC 2
12
3
BAL OR
UNBAL
LINE IN 2
TRIM
-45dB
+15dB+15dB +15dB +15dB +15dB +15dB +15dB +15dB
LINE
0dB
MIC MIC MIC MIC MIC MIC MIC MIC
LOW CUT
75Hz
18dB/Oct
0
EQ
HI
12kHz
+15
-15
0
MID
800
0
LOW
80Hz
+15
-15
0
AUX
1
POST
PRE
-
+15
0
2
POST
(PRE)
-
+15
PAN
LEFT
LEFT
RIGHT
RIGHT
MUTE /
ALT3-4
SOLO
PEAK PEAK PEAK PEAK PEAK
10
dB
dB
5
0
-5
-10
-10
-15-15
-20-20
-30-30
-40
-60
-60
MIC 3 MIC 5
12
BAL OR BAL OR
LINE IN 3
TRIM
-45dB
LINE
0dB
LOW CUT
75Hz
18dB/Oct
0
EQ
HI
12kHz
+15
-15
0
MID
0
LOW
80Hz
+15
-15
0
AUX
1
POST
PRE
-
+15
0
2
POST
(PRE)
-
+15
PAN
LEFT
MUTE /
ALT3-4
SOLO
10
dB
5
0
-5
-10
-15
-20
-30
-40
-60
MIC 4
3
RIGHT
12
UNBALUNBAL
LINE
LOW CUT
75Hz
18dB/Oct
EQ
HI
12kHz
MID
LOW
80Hz
AUX
POST
(PRE)
PAN
MUTE /
ALT3-4
1010
dB
5
0
-5
-10
-15
-20
-30
-40
-60
12
3
LINE IN 4
TRIM
-45dB
0dB
0
+15
-15
0
800800 800800 800800
0
+15
-15
0
1
POST
PRE
-
+15
0
2
-
+15
3
BAL OR BAL OR
UNBAL UNBAL
LINE IN 5
TRIM
-45dB
LINE
0dB 0dB
LOW CUT
75Hz
18dB/Oct
0
EQ
HI
12kHz
+15
-15
0
MID
0
LOW
80Hz
+15
-15
0
AUX
1
POST
PRE
-
+15
0
2
POST
(PRE)
-
+15
PAN
LEFT
SOLO
LEFT
MUTE /
ALT3-4
10
dB
5
0
-5
-10
-15
-15
-20
-30
-40
-60
RIGHT
SOLO
RIGHT
MIC 8MIC 7
12
3
UNBALUNBAL
-45dB
LINE
LOW CUT
75Hz
18dB/Oct
EQ
HI
12kHz
+15
MID
LOW
80Hz
+15
AUX
POST
PRE
+15
POST
(PRE)
+15
PAN
RIGHT
MUTE /
ALT3-4
SOLO
10
dB
5
0
-5
-10
-15
-15
-20
-30
-40
-60
LINEIN8
0dB
-15
-15
1
-
2
-
LEFT
TRIM
12
3
BAL OR
UNBAL
-45dB
LINE
LOW CUT
75Hz
18dB/Oct
0
EQ
HI
12kHz
+15
0
MID
FREQFREQFREQFREQFREQFREQFREQFREQ
0
LOW
80Hz
+15
0
AUX
POST
PRE
+15
0
POST
(PRE)
+15
PAN
RIGHT
MUTE /
ALT3-4
SOLO
10
dB
5
0
-5
-10
-15
-20
-30
-40
-60
LEFT
LINE IN 9/10
LEFT(MONO)
RIGHT
0
-15
0
0
-15
0
-15
0
1
-
0
2
-
LEFT
1
2
LEVEL
+4dBu
-10dBV
EQ
HI
12kHz
+15
HI-MID
3kHz
MID-LOW
500Hz
+15
LOW
80Hz
+15
AUX
POST
PRE
+15
POST
(PRE)
+15
BAL
RIGHT
MUTE /
ALT3-4
SOLO
10
dB
5
0
-5
-10
-15
-20
-30
-40
-60
STEREO AUX RETURN
LEFT(MONO)
AUX SEND
RIGHT
RIGHT
2
LINE IN 11/12
LEFT(MONO)
1
-
2
-
LINE IN 13/14
LEFT(MONO)
LEVEL
12kHz
+15
HI-MID
MID-LOW
500Hz
+15
+15
AUX
+15
+15
+4dBu
-10dBV
EQ
HI
3kHz
LOW
80Hz
1
POST
PRE
-
2
POST
(PRE)
-
RIGHT RIGHT
0
-15
0
0
-15
0
-15
0
0
RIGHT
0
-15
0
0
-15
0
-15
0
0
BAL
LEFT
LEFT
RIGHT
MUTE /
ALT3-4
SOLO
PEAK PEAK PEAK
10
dB
5
0
-5
-10
-15
-15
-20
-30
-40
-60
CTRL ROOM
LEVEL
12kHz
+15
HI-MID
MID-LOW
500Hz
+15
+15
AUX
+15
+15
BAL
RIGHT
MUTE /
ALT3-4
10
dB
5
-5
-10
-15
-20
-30
-40
-60
OUTPUT
+4dBu
-10dBV
EQ
HI
3kHz
LOW
80Hz
POST
(PRE)
SOLO
0
POST
PRE
LL1
RR
LINE IN 15/16
LEFT(MONO)
0
-15
+15
0
+15-15+15-15+15-15+15-15+15-15+15-15+15-15+15-15+15-15+15-15+15-15+15-15
0
-15
+15
0
-15
+15
0
1
-
+15
0
2
-
+15
LEFT
2-TRACK IN/OUT
TAPE OUT
TAPE IN
LEVEL
+4dBu
-10dBV
EQ
HI
12kHz
HI-MID
3kHz
MID-LOW
500Hz
LOW
80Hz
AUX
POST
PRE
POST
(PRE)
BAL
RIGHT
MUTE /
ALT3-4
SOLO
10
dB
5
0
-5
-10
-15
-20
-30
-40
-60
PHONES
0
2
-
+15
EFX TOAUX1
0
1
-
+15
0
2
-
+15
AUX SEND
SOLO
ACTIVE
SOLO MODE
AUX
RETURN
LEVEL
SET
PFL
AFL
R
S-16
LTO
16-CHANNEL MIXING CONSOLE
0
1
-
PHANTOM
CLIP
10
7
4
2
0
-2
-4
-7
-10
-20
-30
LR
OUTPUT LEVEL
10
dB
5
0
-5
-10
-15
-20
-30
-40
-60
0
-
+15
PWR
+15
ALT 3-4
ALT3-4
TO MAIN MIX
2TK
TO MAIN MIX
MAIN MIX
ALT3-4
2TK IN
TO
CTR ROOML
10
dB
5
0
-5
-10
-15
-20
-30
-40
-60
1 2 3 4 5 6 7 8 9/10 11/12 13/14 15/16
7
LEFT
MAIN MIX LEVEL
RIGHT
PHONES/
CONTROL ROOM
4.1 The mono MIC/LINE channels
1
These are Channel 1 through Channel 8. You can connect balanced, low impedance microphones to the XLR socket. On the 1/4" phone jack you can
connect either a microphone or a line level instrument. You shall never connect
an unbalanced microphone to the XLR socket if you do not want to damage
both the Microphone and the Mixer.
MIC 1
12
3
48 Volt phantom power
2
It is available 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.
4.2 INPUT LEVEL setting
3
This Control is provided with 2 different indication rings: One is
for the Microphone and the other for the Line levels. When you
use a microphone you shall read the OUTSIDE ring (0-60 dB),
When you use a Line level instrument you shall read the INSIDE
ring (+15~-45 dB). For optimum operation you shall set this control
in a way that the peak LED will blink also occasionally in order to
avoid distortion on the input channel.
LINE IN 1
TRIM
+15dB -45dB
0dB 60dB
BAL OR
UNBAL
LINE
MIC
LOW CUT
75Hz
18dB/Oct
1
3
4
POWER PHANTOM
ON
OFF
4.3 LOW-CUT FILTER
4
By pressing this button you will activate a 75 Hz low frequency filter with a slope of 18 dB per octave. You can use
this function to reduce hum and stage rumble when using microphones.
2
8
4.4 STEREO INPUTS
5
5
These are Channel 9 through 16. They are
organised in stereo pair and they are provided
with 1/4" TRS phone sockets.
If you connect only the left jack, the input will
operate in mono mode.
4.5 +4dB / -10dBuV
6
This switch adjusts the input sensitivity of
the on the stereo channels CH 9line inputs
~ CH 16. Engaging the switch is used to suit
for "-10dBV" sound source. If you are unsure,
leave the switch up.
4.6 PHONES
7
The 1/4" TRS socket will send out the signal
mix to a pair of headphones
4.7 EQUALIZER
The mono input channels (channel 1- channel 8) are equipped
with 3 band MID sweep EQ: HI band, MID band and LOW band;
And the stereo channels (channel 9-channel 16) are equipped
with 4 band fixed frequency equalization: HI band, HI-MID band,
MID-LOW band and LOW band. All bands provide up to 15dB
of boost or cut.
LINE IN 11/12LINE IN 9/10
LEFT(MONO)
RIGHT RIGHT
LEVEL
+4dBu
-10dBV
LEFT(MONO)
LEVEL
-10dBV
9
LINE IN 13/14
LEFT(MONO)
RIGHT RIGHT
+4dBu
6
1
LINE IN 15/16
LEVEL
-10dBV
+4dBu
LEFT(MONO)
LEVEL
-10dBV
PHONES
+4dBu
7
0
EQ
HI
12kHz
-15
+15
0
MID
800
FREQ
8kHz100Hz
0
LOW
80Hz
+15
-15
0
AUX
0
EQ
HI
12kHz
+15
-15
0
HI-MID
3kHz
+15-15+15-15
0
MID-LOW
500Hz
+15
-15
0
LOW
80Hz
+15
-15
0
AUX
1
8
10
4.7.1 HI
8
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. The gain range goes from -15dB
to +15dB with a center frequency of 12 kHz.
4.7.2 MID
9
This is the Midrange control. It provides 15dB of boost or
cut, flat at the center detent and the FREQ knob sets the
center frequency, the adjustable range is from 100Hz to 8kHz.
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.
4.7.3 HI-MID
10
This control gives you up to 15dB boost or cut at 3kHz. It is useful
for controlling voice. It can accurately polish your performance
via adjusting this knob.
POST
PRE
POST
(PRE)
-
2
-
-
+15
0
2
-
+15
PAN
LEFT
RIGHT
LEFT
MUTE /
ALT 3-4
SOLO
PEAK PEAK
10
dB
5
0
-5
-10
-15
-20
-30
-40
-60
POST
PRE
+15
0
POST
(PRE)
+15
BAL
RIGHT
MUTE /
ALT 3-4
SOLO
10
dB
5
0
-5
-10
-15
-20
-30
-40
-60
8 9/10
9
4.7.4 MID-LOW
11
This control gives you up to 15dB boost or cut at 500Hz.
4.7.5 LOW
12
This is the Bass control. Boost male voice or kickdrum and bass
guitar. Your system will sound much bigger than what it is. The
gain range goes from -15dB to +15dB and the center frequency
is 80 Hz.
4.8 AUX SEND
13
These two controls will send the audio signal out to Auxiliary busses.
AUX 1 can be configured as PRE/POST Fader via the PRE/POST switch:
Up for POST Fader, the audio signal will be affected by the main Channel
Fader; Down for PRE Fader, the signal is sent out before reaching the
main fader. AUX 2 is configured as POST-Fader; However, AUX 2 can
also be configure as PRE-Fader through any internal modification.
(For more detail, please see chapter 6.)
4.9 PAN/BAL
14
The PANORAMA control for the MONO channels, and BALANCE
for the STEREO channels. You can adjust the stereo image of the
signal via these Control. Keep the control in center position and
your signal will be positioned in the middle of stage. Turn the control
fully counterclockwise and the signal will be present only on the left
speaker and vice-versa. Of course a wide number of intermediate
positions is available.
4.10 MUTE / ALT 3-4
15
Each channel is equipped with the MUTE / ALT 3-4 switch. Pressing
this switch is used to route the channel signal to ALT 3-4 output
instead of the main mix and the LED beside MUTE/ ALT 3-4 will
illuminate.
0
EQ
HI
12kHz
-15
+15
0
MID
800
FREQ
8kHz100Hz
0
LOW
80Hz
+15
-15
0
AUX
1
-
+15
0
2
-
+15
LEFT
RIGHT
8 9/10
1
POST
PRE
2
POST
(PRE)
PAN
LEFT
MUTE /
ALT 3-4
SOLO
PEAK PEAK
10
dB
5
0
-5
-10
-15
-20
-30
-40
-60
0
EQ
HI
12kHz
+15
-15
0
HI-MID
3kHz
+15-15+15-15
0
MID-LOW
500Hz
+15
-15
0
LOW
80Hz
-15
+15
0
AUX
POST
-
-
PRE
+15
0
POST
(PRE)
+15
BAL
11
12
13
14
RIGHT
MUTE /
ALT 3-4
15
16
SOLO
17
10
dB
5
0
-5
-10
-15
-20
-30
-40
-60
18
19
4.11 SOLO
16
Pressing this switch allows you to monitor the signals through headphone or CONTROL ROOM, then the SOLOyour
signal will replace other signals, and be also sent to the CONTROL ROOM, PHONES and METERs. Usually use the
solo in live work to preview channels before they are let into the mix.
It is useful to set instruments's input level and EQ, and you can also solo any channel that you want to. The SOLOan
switch never affects any mix other than the CONTROL ROOM mix.
4.12 SOLO LED
17
Each channel is equipped with the SOLO LED display. When the SOLO was engaged, the LED on corresponding
channel will illuminate.
10
4.13 PEAK
18
Inside your S-16 the audio signal is monitored in several different stages and then sent to the PEAK Led. When this
Led blinks, it warns you that you are reaching signal saturation and possible distortion. The PEAK Led will blink with
a level that is 6dB before actual clipping.
4.14 FADER
19
This Fader will adjust the overall level of this channel and set the amount of signal sent to the Main output.
4.15 INSERT
Insert points are provided for the Mono Mic Channels. When you insert a jack in the insert socket, the
20
CH8
( PRE-FADER/PRE-EQ TIP SEND/RING RETURN )
CH6
CHANNEL INSERT
CH4 CH3CH5CH7
signal will be taken out after the Input Gain Control
(Trim), sent to an external processor such a compressor-limiter, and returned into the channel strip
immediately before the EQ section. Of course, the
jacks used must be stereo (Tip Send/Ring Return).
20
4.16 MAIN SECTION
-. STEREO AUX RETURN
Use these stereo 1/4" phone socket to return the
sound of an effect unit or sound processor to the
Main Mix.
Alternatively you can use them as an extra auxiliary
input.
21
21
STEREO AUX RETURN
LEFT(MONO)
RIGHT
1
22
AUX SEND
23
CTRL ROOM
OUTPUT
CH2
24
2-TRACK IN/OUT
LL1
CH1
-.AUXSEND1&2
22
This 1/4" phone socket is used to send out the
LEFT
RIGHT
2
2
RR
TAPE IN
TAPE OUT
signal from the AUX Bus to external devices such
as effects and sound processors.
-. CONTROL ROOM OUTPUT
23
These two unbalanced TRS jacks should be connected to the input of your control room amplifier.
-. 2-TRACK IN / OUT
24
Input
Use the Tape input if you wish to listen to your Mix from a Taper Recorder or DAT, You can assign the signal coming
form the Taper Recorder either to a pair of studio monitor using the Control Room assignment on the front panel or
you can also send the signal directly to the Main Mix.
Output
These 1/4" TRS sockets will route the main mix into a tape recorder.
11
-. AUX SEND
25
The both switches are used to determine the master AUX
SEND levels. The adjustable range is from - to +15dB.
When the effect unit connected to mixer has
no input gain
control, you can get a further +15dB gain available from
these AUX SEND outputs.
-. AUX RETURN
26
The Auxiliary Returns 1 and 2 are in fact 2 additional
stereo Line inputs. AUX RETURN 1 is configured to be
assigned permanently to the Main Mix. (It operates in
Mono Mode if you connect only the left jack).
The EFX TO AUX1 button is used to swtich the signal
from AUX RETURN 2 between MAIN MIX and AUX
SEND 1.
If a signal is routed to AUX RETURN 1 and no signal
is connected to AUX RETURN 2, the signal will be
switched to AUX SEND 1 via depressing the EFX TO
AUX1, then the signal will be controlled in level by AUX
RETURN 2.
Without doubt, this feature will be very useful to you.
-. MAIN MIX LEVEL
27
These faders set the amount of signal sent either to
the Main Out socket or to the Tape Output.
-. LED METER
28
25
29
0
2
-
+15
EFX TO AUX1
0
1
-
+15
0
2
-
+15
AUX SEND
SOLO
ACTIVE
SOLO MODE
26
AUX
RETURN
LEVEL
SET
PFL
AFL
OUTPUT LEVEL
10
dB
5
0
-5
-10
-15
-20
-30
-40
-60
0
1
-
+15
PWR
PHANTOM
CLIP
10
7
4
2
0
-2
-4
-7
-10
-20
-30
LR
CTR ROOML
TO
0
-
ALT 3-4
ALT 3-4
TO MAIN MIX
2TK
TO MAIN MIX
MAIN MIX
ALT 3-4
2TK IN
30
+15
32
31
33
34
28
36
10
dB
5
0
-5
-10
-15
-20
-30
-40
-60
35
This stereo 12 segments Led Meter will indicate the level
of the overall output signal.
LEFT
MAIN MIX LEVEL
RIGHT
PHONES/
CONTROL ROOM
27
-. SOLO MODE
This button provides two modes: up for PFL (Pre-Fader-Listen) mode, down for AFL (After-Fader-Listen) mode.
Engage the button, the output signal of soloed channel will follow the TRIM, EQ, FADER and PAN/BAL control,
and the SOLO ACTIVE LED illuminates.
When the button is in PFL mode, the output signal of soloed channel is unaffected by the PAN/BAL and FADER
control.
Please note that the SOLO function can never affect the mix at main recording output, and also can't be affected
by channel's MUTE/ALT 3-4 switch.
29
12
-. ALT 3-4
This control is used to adjust the level of the ALT output, and the adjustable range is from - to +15dB. This is another
way to offer you an extra independent stereo submix with its own level adjustment knob.
30
-. POWER
This LED indicates when the Power is on in your S-16.
-. PHANTOM
This LED indicates when the Phantom Power is switched on.
-. ALT 3-4 TO MAIN MIX
Engaging this switch allows you to combine the ALT 3-4 output with the MAIN MIX, and feeds ALT 3 - 4 signals
into MAIN L / R output.
-. 2 TK TO MAIN MIX
Engaging this switch allows you to combine the 2 TRACK Output with the MAIN MIX, in other words, feeds
the 2 TRACK IN signals into MAIN L / R output.
-. PHONES / CONTROL ROOM
This Control sets the amount of signal sent to the Control Room and headphone.
31
32
33
34
35
-. CONTROL ROOM SOURCE
You can choose to monitor any combination of MAIN MIX, ALT 3-4 and 2 TK IN via these MATRIX switches. The
ALT 3-4 is the additional stereo mix bus; 2 TK IN is the stereo signal coming in from the TAPE IN RCA jacks.
These stereo signals will be delivered to the PHONES / CONTROL ROOM and METERS display via engaging
these switches. If no switches engaged, there will be no signal at these outputs.
Note: When the channel's SOLO switch was engaged, then, the SOLO signal will replace other signals, and also
be sent to the CONTROL ROOM, PHONES and METERS.
36
13
4.17 REAR PANEL
-. AC INLET & FUSE HOLDER
37
Use it to connect your S-16 to the Main AC with the supplied AC
cord. Please check the Voltage available in your Country and
how the Voltage for your S-16 is configured before attempting to
connect your S-16 to the Main AC.
-. POWER
38
This switch is used to turn the Main Power ON and OFF.
-. PHANTOM
2
This switch will apply +48 Volt Phantom Power only to the 8 XLR
microphone inputs. Never connect microphones when the Phantom
Power is on already.
-. MAIN MIX OUTPUT
39
38
POWER PHANTOM
ON
OFF
100-120V 60Hz
Fuse:T500mAL
2
Use only with a 250V fuse
Use only with a 250V fuse
Use only with a 250V fuse
RATED POWER CONSUMPTION: 35W
USA / Canada
Apparaten skall anslutas
till jordat uttag nar den
ansluts till ett natverk
AC INPUT
EUROPE
210-240V 50Hz
Fuse:T250mAL
37
UK / Aust
240V 50Hz
Fuse:T250mAL
This stereo output is supplied both with XLR
and 1/4" jack socket and it is controlled by the
Main Mix Level on the front panel. It will send
WARNING: SHOCK HAZARD
AVIS: RISQUE DE CHOC ELECTRIQUE
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
- DO NOT OPEN
CAUTION:
REPLACE WITH THE SAME TYPE FUSE AND RATING
DISCONNECT SUPPLY CORD BEFORE CHANGING FUSE
- NE PASOUVRIR
the audio signal to an amplifier. The output level
can be varied from - to +10dB.
-. ALT OUTPUT
40
MAIN OUTPUT (BALANCED)MIX
12
3
LEFTRIGHT
3
+4dBu
MIC
12
MAIN
OUTPUT
LEVEL
These 1/4" sockets are unbalanced outputs. They
are capable of delivering +22dBu into the load.
Level to the ALT OUTPUT is adjusted by ALT 3-4
rotary knob on the front panel.
41
-. MAIN OUTPUT LEVEL
39 40
41
When depress the switch, the output level from MAIN MIX OUTPUT will be reduced 30dB.
LEFTRIGHT
MODEL
SERIAL
ALT OUTPUTMAIN OUTPUT
RIGHT(4) LEFT(3)
14
5. INSTALLATION & CONNECTION
Ok, you have got to this point you are now in the position to successfully operate your S-16. 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:
Turn down all Input and Output Gain Controls.
Connect phantom powered microphones before switching on the +48Volt Phantom Power switch.
If you have a power amplifier connected to your S-16 set the Level of the amplifier at no more than 70%.
you are doing connecting a pair of headphones or a pair of powered studio monitor speakers.
Position EQ controls on middle position.
Position panoramic (PAN) control on center position.
With a headphone or studio monitor speakers connected apply a Line Level input signal so that the PEAK Led does
not light up.
At this point increase the input gain so that the PEAK led will blink occasionally. In this way you will maintain good
headroom and ideal dynamic range.
Now connect a microphone and ask the singer to sing loud into the microphone. Turn slowly the Gain Control clockwise and have the PEAK Led blink only occasionally.
whatNow, set the CONTROL ROOM/PHONES level at no more than 50%. In this way you will be able to hear later
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.
15
B. Wiring Configuration
You can connect unbalanced equipment to balanced inputs and outputs. Simply follow these schematics.
Strain Clamp
Strain Clamp
Sleeve
Tip
Ring
Sleeve=Ground/Screen
Use for Headphone, Stereo Return
Ring=Right Signal
1/4" Stereo (TRS) Jack Plug
Sleeve
Use for Mono Line In, Mono 1/4"Jack Plugs
Tip
Sleeve=Ground/Screen
1/4" Mono (TS) Jack Plug
Tip=Left Signal
Tip=Signal
Strain Clamp
2
2=Hot(+)
3=Cold(-)
Use for Balanced Mic Inputs
(For unbalanced use, connect pin 1 to 3)
1
3
Sleeve
Tip
Ring
Sleeve=Ground/Screen
Use for Pre-Gain Channel Inserts
Ring=Return Signal
1/4" Stereo (TRS) Jack Plug
1=Ground/Screen
2=Hot(+)
(For unbalanced use, leave pin 3 unconnected)
Tip=Send Signal
2
1
3
3=Cold(-)
Use for Main output
1=Ground/Screen
3-pin XLR Male Plug
(seen from soldering side)
3-pin XLR Line Socket
(seen from soldering side)
16
Ring=Return Signal (Connected together)
Sleeve=Ground/Screen
Tip=Signal
Sleeve=Ground/Screen
'Tapped' Connection Direct Output Lead
(Enables the Insert to be used as a Direct Output
while maintaining the channel signal flow)
To Channel Insert
To Tape or FX Input
To Processor Input
Sleeve=Ground/Screen
Tip
Tip=Send Signal
To Channel Insert
Sleeve
Ring
Ring=Return Signal
To Processor Output
-Stereo lead for insert Connection
(To be used when the processor does not employ a
single jack connection for the In/Out Connections)
17
6. FOR THE EXPERTS WHO WANT TO KNOW MORE
As we have told you previously in this Manual, the Aux Send 2 Control both on Mono and on stereo channels is factory
wired as POST-FADER. If you have some skill in electronic components soldering you can modify this setting and have
all your AUX sends configured as PRE-FADER.
(PRE)
POST
Aux
Disconnect
the POST route
Before
Modification on mono and stereo channels
(PRE)
POST
Aux
Solder the PRE route
After
18
7. SYSTEM BLOCK DIAGRAMS
D
8
LEFT
RIGHT
TA PE OUT
2TK
7
AUX SE ND1
AUX SEND
S
R
T
6
1
2
AUX
AUX
LEVEL
MAIN OUT
R
AUX SE ND2
S
R
T
LEVEL
LEVEL
MAIN MIX
MAIN MIXL EFT
213
S
T
R
IC
+4dB/M
MAIN MIXR IGHT
213
S
T
IC
+4dB/M
LEVEL
ALT 3-4
C
UT
ALT -3(L)
S
R
R
T
T
ALT3-4 O
LEFT
RIGHT
TA PE IN
ALT- 4(R)
2TK
S
2TK
ALT 3-4
B
CT I V E
SOLOA
TE R
LEFT ME
RL
SOLOCT
PUT
PHONES
TE R
RIGHTME
ODE
()
SOLOM
)
PFL LED
(LEVEL SET
S
R
T
PHONES OUT
PFL()AFL
PUT
R
ROL ROOM OUT
CONT
A
N.
NLI
VER020825
1
KEVI
Revision
1o f
nBy:
Draw
Sheet
RIGHT
T
S
ROL ROOM
CONT
AGRAM
S-16 BLOCKDI
ALT OMIXI NGCONSOLE
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26-M
S16-MAP.Sch
ModelNo:
A3
Date:
Size
Titel
File:
78
&PHONES
6
LEFT
S
R
T
2TK T OMIX
MAIN MIX
5
AUX-1
LOGIC
EFX SEND
SOLO(PFL)
AFL-R
AFL-L
AUX-2
AUX-1
ALT- 4(R)
ALT-3(L)
RIGHT-BUS
LEFT-BUS
4
AUX-2
-BUS
RIGHT-BUS
ALT- 4
LEFT
ALT- 3
MAIN/ALT
-BUS
LEFT
PFL)
AFL-L
AFL-R
SOLO(
-BUS
RIGHT
AUX-2
ON
SOLO
()
ALT -3(L)
AUX-1
AL T 3-4TOMIX
-BUS
-BUS
LEFT
LEFT
ALT- 4(R)
-BUS
LEFT
ALT- 3
MAIN/ALT
RIGHT-BUS
ALT- 4
RIGHT-BUS
RIGHT-BUS
PFL)
AFL-L
AFL-R
SOLO(
SOLO
CONT ROL ROOMSOURCE
AFL L
AUX-2
AUX-1
ON
()
PFL)
AFL R
SOLO(
-BUS
-BUS
AUX-1
LEFT -BUS
LEFT
RIGHT
AUX-1
RIGHT-BUS
5
EFX SEND
SOLO(PFL)
AFL-R
AFL-L
AUX-2
AUX-1
ALT- 4(R)
ALT-3(L)
RIGHT-BUS
LEFT-BUS
4
POST
121
AUX 2
AUX 1
2
PRE
PRE
POST
AUX 1RET URN
-
-
SG/OL
+
URN 1
T
S
R
R
RN
RN
TN
3c5e1a4d2b
3c5e1a4d2b
LEFT(M ONO)
ST EREO AUX RET
B
PAN
3
2
FADER
2
LO CUT
1
3
HI
12K
Q
75Hz
HI PASS
z-8kHz
(FREQ)
+/-15db
3-BA N D E
MID
100H
80
LO
+
GAIN
-
R
3c5e1a4d2b
S(1-8)
AUX1
AUX2
2
PRE
POST
121
POST
BAL ANCE
PRE
FADE R
SG/OL
HI
Q
Q
12K
12K
3K
M-H
L-M
S
T
RN
TN
LO
INSERT
S ( 9-16)
3K
+/-15db
+/-15db
4-B AN D E
4-B AN D E
50080
50080
-
-
+
+
-45d B
15dB~
213
NPUT CHANNEL
OM
1
+48V
POWER
PHANT
MONO I
MICIN
LINEIN
D
60dB
MIC GAI N:0~
LI NE INT RIM:+
R
RN
3c5e1a4d2b
ST EREO INPUT CHANNEL
T
T
S
S
R
RN
TN
TN
3c5e1a4d2b
ONO)
LEFT(M
RIGHT
C
1
3
1
3
EFXT OAUX-1
2
2
3
RET URN
AUX2/ DSP
-
+
+
AUX2/ DSP
2
-
+
URN 2
T
TN
T
T
S
S
R
RN
TN
3c5e1a4d2b
RIGHT
ST EREO AUX RET
S
R
RN
TN
3c5e1a4d2b
LEFT
RIGHT
A
1
19
8. TECHNICAL SPECIFICATIONS
Mono input channels
Microphone input
Frequency response
Distortion (THD&N)
Gain range 0dB to 60dB(MIC),
SNR (Signal Noise Rated)
Line input
Frequency response
Distortion (THD&N)
Sensitivity range
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 (Mono)
Hi Mid (stereo)
Mid Low (stereo)
Low shelving
Low Cut filter
Main Mix Section
Noise (Bus noise)
Max output
AUX Return gain range
AUX Send max out
Power supply
Main voltage
Power Consumption 35watts
Fuse 100-120V~ : T500mAL
Main connection
Physical
Dimension (W D H)X X 408mmX370mmX28/80mm (16"x14.6"x0.8"/3.1")
Net weight
electronically balanced, discrete input configuration
10Hz to 55kHz, +/-3dB
0.005% at +4dBu, 1kHz
115dB
electronically balanced
10Hz to 55kHz, +/-3dB
0.005% at +4dBu, 1kHz
+15dBu to 45dBu-
Balanced
10Hz to 55kHz, +/-3dB
0.005% at +4dBu, 1kHz
1.4Kohm.
2.5Kohm.
10Kohm or greater.
1Kohm.
120ohm.
+/-15dB @12kHz
+/-15dB @100Hz to 8kHz
+/-15dB @3kHz
+/-15dB @500Hz
+/-15dB @80Hz
75Hz, 18dB/oct.
Fader 0 dB, channels muted:-100.0dBr (ref.:+4dBu)
Fader 0dB, all input channels assigned
and set to UNITY gain:-90dBr(ref.:+4dBu)
+22dBu balanced XLR,
+22dBu unbalanced, 1/4" jacks
- to +15dB
+22dBu
USA/Canada100-120V~, 60Hz
Europe210-240V~, 50Hz
U.K./Australia240V~, 50Hz
200-240V~ : T250mAL
Standard IEC receptacle
5.2Kg (11.464 lb)
20
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 purport 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 warrants that this product will be free from any defects in materials and/or workmanship for a period
LTO
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, may repair or replace this product at its own option at no charge to you for
LTO
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 be liable for any incidental or consequential damages. Some states do not allow the exclu-
LTO
sion 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.
21
SEKAKU ELECTRON INDUSTRY (H.K.) CO. LTD.
No.1, Lane 17, Sec. 2, Han Shi West Road, Taichung, 401 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
manual without ekaku Electron
prior notice. Any photocopy, translation, or reproduction of part of this
written permission is forbidden. Copyright 2004 S
c
NF01275-2.2
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