ITC T-8S02 Manuale utente
Please follow the instructions in this manual to obtain the optimum results from this unit.
We also recommend that you keep this manual handy for future reference.
MIXER PRE-AMPLIFIER
OPERATION MANUALOPERATION MANUAL
PUBLIC ADDRESS SYSTEM
T-8S02
12
3
4
5
6
7
8TRIMTRIMTRIMTRIMTRIMTRIMTRIMTRIM
LINE
MIC
LINE
MIC
LINE
MIC
LINE
MIC
LINE
MIC
LINE
MIC
LINE
MIC
LINE
MIC
-50dB
0dB
ON
OFF
PHANTOM
POWER
AUX IN
MAIN
AUX OUT
GND
17VCT
AC
T-8S02
IM-03520
2014-03-05
V0.1
1/1
RAL9003 Signal white
12345678AUX
M A M A M A M A M A M A M A M A
BUS BUS BUS BUS BUS BUS BUS BUSCUT CUT CUT CUT CUT CUT CUT CUT
LOW LOW LOW LOW LOW LOW LOW LO W
T-8S02
HEADPHONE POWER
MAIN
LIMIT
THRESHOLD RATIO
ON
OFF
-18 -12 -6 -3 0+3 +6 +12
-20 +20 1000
12 3 4 5678AU X
M A M A M A M A M A M A M A M A
BUS BUS BUS BUS BUS BUS BUS BUSCUT CUT CUT CUT CUT CUT CUT CUT
LOW LOW LOW LOW LOW LOW LO W LOW
T-8S02
HEADPHONE POWER
MAIN
LIMIT
THRESHOLD RATIO
ON
OFF
-18 -12 -6 -3 0+3 +6 +12
-20 +20 1000
TABLE OF CONTENTS
1. SAFETY PRECAUTIONS .......................................................................................3
2. FEATURES ...........................................................................................................5
3. NOMENCLATURE AND FUNCTIONS
3.1 Front Panel ....................................................................................................6
3.2 Rear Panel......................................................................................................7
3.3 Helpful hints....................................................................................................8
4. INSTALLATION......................................................................................................9
5.OPERATION.........................................................................................................11
5.1 Troubleshooting Gain Structure.......................................................................12
5.2 Recommended Input Wiring Methods..............................................................13
5.3 Fine Tuning...................................................................................................14
5.4 Compressor/Limiter.......................................................................................15
5.5 Special Features Activation............................................................................16
5.6 Jumper Options..............................................................................................17
6. TROUBLESHOOTING TIPS..................................................................................18
7. GLOSSARY.........................................................................................................19
8. TECHNICAL INFORMATION.................................................................................20
9. BLOCK DIAGRAM ...............................................................................................21
2
Be sure to read the instructions in this section carefully before use.
Make sure to observe the instructions in this manual as the conventions of safety symbols and messages
regarded as very important precautions are included.
We also recommend you keep this instruction manual handy for future reference.
Safety Symbol and Message Conventions
Safety symbols and messages described below are used in this manual to prevent bodily injury and property
damage which could result from mishandling. Before operating your product, read this manual first and
understand the safety symbols and messages so you are thoroughly aware of the potential safety
Indicates a potentially hazardous situation which, if mishandled, could
result in death or serious personal injury.
Indicates a potentially hazardous situation which, if mishandled, could
result in moderate or minor personal injury, and/or property damage.
When Installing the Unit
Do not expose the unit to rain or an environment
where it may be splashed by water or other liquids,
as doing so may result in fire or electric shock.
Use the unit only with the voltage specified on the
unit. Using a voltage higher than that which is
specified may result in fire or electric shock.
Do not cut, kink, otherwise damage nor modify the
power supply cord. In addition, avoid using the
power cord in close proximity to heaters, and never
place heavy objects -- including the unit itself -- on
the power cord, as doing so may result in fire or
electric shock.
Be sure to replace the unit's terminal cover after
connection completion. Because high voltage is
applied to the speaker terminals, never touch these
terminals to avoid electric shock.
Be sure to ground to the safety ground (earth)
terminal to avoid electric shock. Never ground to a
gas pipe as a catastrophic disaster may result.
Avoid installing or mounting the unit in unstable
locations, such as on a rickety table or a slanted
surface. Doing so may result in the unit falling
down, causing personal injury and/or property
damage.
When the Unit is in Use
Should the following irregularity be found during
use, immediately switch off the power, disconnect
the power supply plug from the AC outlet and
contact your nearest dealer. Make no further attempt
to operate the unit in this condition as this may cause
fire or electric shock.
If you detect smoke or a strange smell coming
from the unit.
If water or any metallic object gets into the unit
If the unit falls, or the unit case breaks
If the power supply cord is damaged (exposure of
the core, disconnection, etc.)
If it is malfunctioning (no tone sounds.)
To prevent a fire or electric shock, never open nor
remove the unit case as there are high voltage
components inside the unit. Refer all servicing to
your nearest dealer.
Do not place cups, bowls, or other containers of
liquid or metallic objects on top of the unit. If they
accidentally spill into the unit, this may cause a fire
or electric shock.
Do not insert nor drop metallic objects or
flammable materials in the ventilation slots of the
unit's cover, as this may result in fire or electric
shock.
1. SAFETY PRECAUTIONS
3
An all-pole mains switch with a contact separation of at least 3 mm in each pole shall be incorporated in
the electrical installation of the building.
When Installing the Unit
Never plug in nor remove the power supply plug
with wet hands, as doing so may cause electric
shock.
When unplugging the power supply cord, be sure
to grasp the power supply plug; never pull on the
cord itself. Operating the unit with a damaged
power supply cord may cause a fire or electric
shock.
When moving the unit, be sure to remove its power
supply cord from the wall outlet. Moving the unit
with the power cord connected to the outlet may
cause damage to the power cord, resulting in fire or
electric shock. When removing the power cord, be
sure to hold its plug to pull.
Do not block the ventilation slots in the unit's cover.
Doing so may cause heat to build up inside the unit
and result in fire.
Avoid installing the unit in humid or dusty locations,
in locations exposed to the direct sunlight, near the
heaters, or in locations generating sooty smoke or
steam as doing otherwise may result in fire or
electric shock.
When the Unit is in Use
Do not place heavy objects on the unit as this may
cause it to fall or break which may result in
personal injury and/or property damage. In
addition, the object itself may fall off and cause
injury and/or damage.
Make sure that the volume control is set to
minimum position before power is switched on.
Loud noise produced at high volume when power is
switched on can impair hearing.
Do not operate the unit for an extended period of
time with the sound distorting. This is an indication
of a malfunction, which in turn can cause heat to
generate and result in a fire.
Contact your dealer as to the cleaning. If dust is
allowed to accumulate in the unit over a long
period of time, a fire or damage to the unit may
result.
If dust accumulates on the power supply plug or in
the wall AC outlet, a fire may result. Clean it
periodically. In addition, insert the plug in the wall
outlet securely.
Switch off the power, and unplug the power supply
plug from the AC outlet for safety purposes when
cleaning or leaving the unit unused for 10 days or
more. Doing otherwise may cause a fire or electric
shock.
SAFETY PRECAUTIONS
4
2. FEATURES
5
1. 8-channel separate switcher inputs.
2. dual lines design with main channel/assistive channel to output selector.
3. each input adopts insert Eroupean terminal.
4. seperate spare input.
5. XLR balance input & output.
6. multi-channel audio source mix up with public bus.
7. main output has each input with the selector switch of line and Mic.
8. each input can gain control.
9. each input is with low cut filter.
10. phantom power offer power for condenser Mic.
11. each input seperately control knob input PWL.
12. main output & spare output seperately control knob.
13. airproof potentiometer to low noise and long life.
14. external power source.
15. main output with compressor.
16. compressor with by-pass switch.
17. compressor adjustable threshold values and rate can be controlled.
18. LED drawing indicated output.
19. earphone output function.
3.1 FRONT PANEL
1.
Main/Auxiliary Bus Selector (one per channel)
A 4-position switch which selects destination of channel input. Input can berouted to: a) the
main bus (M-up, A-down); b) the auxiliary bus (M-down,A-up-shown at right); c) both the
main and auxiliary buses (both up); or d) neither bus (both down).
2. Channel Volume Control Knob (one per channel)
Controls the volume of the channel input to any and all outputs simultaneously.
3. Low Cut Switch
Helps eliminate low frequency noise (100Hz 18dB/octave).
4. Main Output Compressor/Limiter Switch and LED
Note: Works only on main bus. Reduces distortion of the main output (due to clipping) by controlling its
dynamic range. When the LED (red) is lit, the Compressor/Limiter is on.
The brighter the LED, the more the signal is being compressed.
5. Main Output Volume Control Knob
Controls the output signal volume of the main bus.
6. LED Bar Graph Output Meter
Displays output signal level in decibels, ranging from -18 (green) to +12 (red) VU. 0 VU = +4dBm.
This meter can be set to indicate the signal level of either the main or auxiliary bus and to indicate either
the average or peak signal. (See page 18 for details.)
7. Threshold Control
Screw-pot adjustment sets the signal level (-20 to +20 VU; factory setting is 0 VU) at which the Compressor
/Limiter becomes active.
8. Ratio Control
Screw-pot adjustment sets the amount of compression (0-100%; factory setting is 100%) of the signal above
the threshold.
9. Auxiliary Output Volume Control Knob
Controls the output signal volume of the auxiliary bus output and to the headphones.
(There is no connection between this bus and the Compressor/Limiter.)
10.Headphone Jack
A 1/4 inch-diameter TRS mono-only jack for the connection of headphones. (Only monitors AUX bus.)
11.Power Indicator LED
LED displays mixers powered state. Lit when power is on. Not lit when power is off.
12.Power Switch Button
Push button to turn unit on "in"position); push again to turn unit off ("out"Position).
3. NOMENCLATURE AND FUNCTIONS
1
2
6
12345678AUX
M A M A M A M A M A M A M A M A
BUS BUS BUS BUS BUS BUS BUS BUSCUT CUT CUT CUT CUT CUT CUT CUT
LOW LOW LOW LOW LOW LO W LOW LOW HEADPHONE POWER
MAIN
LIMIT
THRESHOLD RATIO
ON
OFF
-18 -12 -6 -3 0+3 +6 +12
-20 +20 1000
34610 11 12
5789
3.2 REAR PANEL
1. Ground Connection on Rear Panel
Access to ground.
2. AC Power Jack
Mixer power supply input.
Accepts a 4-pin DIN connection from a 17V CT 1.5 Amp transformer.
NOMENCLATURE AND FUNCTIONS
7
12
3
4
5
6
7
8TRIMTRIMTRIMTRIMTRIMTRIMTRIMTRIM
LINE
MIC
LINE
MIC
LINE
MIC
LINE
MIC
LINE
MIC
LINE
MIC
LINE
MIC
LINE
MIC
-50dB
0dB
ON
OFF
PHANTOM
POWER
AUX IN
MAIN
AUX OUT
GND
17VCT
AC
1
235
4678
910
3. Phantom Power Switch
When activated, supplies 30V DC power to all inputs set to MIC level.
4. Auxiliary Bus Output
Balanced, line-level, connection to auxiliary output bus.
5. Main Output Microphone/Line Switch
Selects main output to be either MIC (-50dB) or line (0dB) level.
6. Main Bus Output
Balanced connection to main output bus.
7. Auxiliary Input
Balanced, buffered, uncontrolled, line-level terminals for additional (ninth) input connection
directly to the summing buses selected by internal jumpers. The factory default is both
jumpers installed. (See page 18 for details.)
8. Input Gain/Trim Control Screw
Adjusts gain of input stage, over a range of 40dB.
9. Input Pad Microphone/Line Switch
Selects either MIC (-50dB) or line (0dB) level for corresponding input connection.
10.Input
Balanced input connection (pluggable terminal strip).
Electrical equipment operates best in a clean, dry, well-ventilated environment free of vibration and
electromagnetic fields. The following are some guidelines to achieve optimal performance.
Avoid placing the mixer and cables near heat sources. Be particularly aware of other audio equipment,
such as amplifiers, which can produce a great deal of heat when operating.
To minimize hum in the system, avoid placing the mixer and cables near radio frequency devices and
other electromagnetic field sources such as:
Fluorescent lights
Electrical motors
SCR dimmers
AC power lines, etc.
Note: Always use 2-conductor shielded cable to reduce EMI or RF interference to the Line/MIC inputs.
Keep the mixer and other equipment clean and free of dust by wiping occasionally with a soft, damp
cloth.
Protect the mixer from electrical damage by disconnecting it from the power source whenever it will be
unused for a week or longer.
The Bogen mixer is easy to install and adjust. The only tools needed are:
1. Slotted screwdriver
2. Phillips-head screwdriver
8
3.3 Helpful Hints
NOMENCLATURE AND FUNCTIONS
4. INSTALLATION
Note: Take the mixer out of the box and inspect for shipping damage. If there is obvious physical
damage to the outside of the mixer, contact the supplier of the mixer before you begin installation.
Rack Mounting: To mount the CAM8PRO to a 19"rack, lift the unit up to the front of the rack and
secure it to the front of the rack with the necessary screws (not included with this unit).
A. Turn all mixer Volume Control Knobs [Channel(s) (1), Main (2), and Auxiliary (3)] to zero.
1AUX
M A M A
BUS BUSCUT
LOW HEADPHONE POWER
MAIN
LIMIT
THRESHOLD RATIO
ON
OFF
-18 -12 -6 -3 0+3 +6 +12
-20 +20 1000
1 2 3
Turn amplifier(s) volume controls to the 7 o'clock position.
B. Connect Inputs.
Connect lead into desired pluggable terminal strip (6) on rear panel.
Press Input Pad Microphone/Line Switch (5) to appropriate position: "in"for line input or "out"for MIC
input. Note that the input from some mics is actually close to line level (-20dB) and for such mics the
switch should be at "Line". Set switch for all unused channels at Line level. The Auxiliary Input (4) is
Line level only.
6
7
8TRIMTRIMTRIM
LINE
MIC
LINE
MIC
LINE
MIC
AUX IN
9
5. INSTALLATION
INSTALLATION
C. Connect Output: Make a connection between Main Bus Output Terminals (3) and an input jack of
an amplifier. Press Main Output Microphone/Line Switch (2) to appropriate position: "in" for line-level
output (0dB) or"out"for mic-level (-50 dB) output
-50dB
0dB
ON
OFF
PHANTOM
POWER
MAIN
AUX OUT
10
If desired, also connect Auxiliary Bus Output Terminals (1) to a second destination device. The auxiliary
output is line-level only.
D. Connect mixer power supply to an AC power outlet and to the AC Power Jack (4) (located on far left
side of rear panel).
E. Power up mixer:
GND
17VCT
AC
4
Press Power Switch (8) to "in"position. [Power Indicator LED (7) will be lit if mixer is powered]. Set
Main Output Volume Control Knob (5) to 2 o'clock. If auxiliary output is desired, also set Auxiliary
Output Volume Control Knob (6) to 2 o'clock.
AUX
HEADPHONE POWER
MAIN
LIMIT
THRESHOLD RATIO
ON
OFF
-18 -12 -6 -3 0+3 +6 +12
-20 +20 1000
56
78
Power up amplifier:
Note: Mixer will produce signal transients on power up and power down. Always turn the mixer on first
before turning on the amplifier and always turn the amplifier off first before turning off the mixer.
Indice
Altri manuali ITC Amplificatore
