AMC XG User guide

XG
16 CHANNEL
POWER AMPLIFIER
IA

2
1. Although the AMC XG is designed with high efficiency digital amplifiers, it still
generates modest amounts of heat, adequate ventilation is required. We therefore
recommend users not to place the XG amplifier on a soft surface such as a carpeted
surface, etc.
2.. CAUTION: To prevent the risk of fire or shock, do not allow any liquid or moisture to
enter into the internal parts of this product. If any liquid accidentally enters this
product, shut off the power and remove the AC power cord immediately. If the liquid is
anything other then clean water or pure alcohol, have the product examined by a
service technician. Servicing of this product should be referred to a qualified service
technician.
FEATURES and SPECIFICATIONS
1. 50W x 16 Channel Distribution Amplifiers
2. Designed with High Effi ien y PowerAmplifiers for very low heat
3. Designed with input sensitivity adjustment for ea h hannel
4. Designed with IR input as interfa e from outside to XG internal
mi ropro essor
5. Designed with IR output for as ade IR signal path
6.Design with RS232 interfa e in order to link XG to Ethernet System through
USB or Ethernet Adapter
7. Designed with Auto turning on / off feature ontrolled by Audio signal or
3~30V AC/DC Voltage
INSTALLATION NOTES


1. AC INLET
2. 2CH/BRIDGE SWITCHES x 8
3.INPUTSx16
4. INPUT LEVEL ADJ's x 16
5. LOOP OUTPUTS x 16
6. LOUDSPEAKER TERMINALS x 8
7. RS232 Connector
8.IRIN&IROUT
9. AUDIO SENSE/ TRIGGER/
CONSTANT SWITCH
10. 12V DC OUT & 3~30V DC/AC IN
11. FUSE
1. POWER SWITCH AND POWER
INDICATOR
3
1
1
2
3
9
5
6
10
7
4
8
REAR PANEL CONNECTIONS/FRONT PANEL CONTROLS
REAR PANEL
FRONT PANEL

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1. AC INLET
2. 2CH/ BRIDGE SWITCHES X 8.
3. IN (INPUTS) X 16.
4. INPUT LEVEL ADJUSTS X 16.
5. LOOP OUTPUTS (OUT) x 16
Plug one end of the AC line cord into the
AC INLET and the other end into a
nearby wall outlet that provides the
correct AC power line voltage, or into a
convenience outlet on any other AMC
product.
There are eight slide switches on the
back panel labelled "2CH/BRIDGE".
These switches allow the XG to operate
in several modes depending on the
number of loudspeakers to be connected.
These modes of operation are defined as
follows;-
With all eight switches in the BRIDGE
position, the XG becomes a 8 channel
(stereo) amplifiers capable of driving eight
8 ohm loudspeakers at 100 watts per
channel. Under the Mode, all Inputs, Loop
Outputs & Input Level Adjusts are on L
Channel. In this mode, the XG can be
used as a high power, audiophile quality,
8 channel power amplifier.
CAUTION: In the BRIDGE mode, the
speaker terminals should be directly
wired to the loudspeaker and not to any
accessory device like sub-woofer
amplifier network or headphones
adaptors etc that may share a common
ground with other channels.
With 8 switches in the 2CH position, the
XG becomes a 16 channel amplifiers
capable of driving sixteen 4 ohm
loudspeakers at greater than 50 watts per
channel.
With some switches in the BRIDGE
position and other in the 2CH position,
the XG becomes 9~15 channel
amplifiers.
There are sixteen RCA phono connectors
on the back panel that connect to the
inputs of each of the sixteen power
amplifiers. Connections to these inputs
are made with reference to the MODE
SWITCH settings described above;-
Connections for the CH
A can be made via L RCA input connector
of CH A and for the CH B input, use the L
RCA input connector of CH B. And so the
other C to H channels.
NOTE: In this mode, the input phono
connectors of R RCA input connectors
are disconnected.
In this mode, the XG
operates as a 16 channel amplifier.
Connections to the inputs of these
amplifiers are made through the RCA
phono connectors of L & R RCA
connectors of CH-A to CH-H.
Each channel of the XG has its own,
independent level control. Before turning
on the XG for the first time, make sure
that all level controls are set to their fully
clockwise position. These controls can be
used for various functions. For example,
they can be used to match the levels of
loudspeakers in a multi-room installation,
or to lower the sensitivity of the power
amplifier, so that the volume control on
the pre-amplifier is at a more convenient
and usable position. They can also be
used to optimize the balance in a stereo
system.
NOTE: In the Bridge mode, only the input
level controls of L of CH-A to CH-H are
operative.
For each Input there is corresponding
looped output for all 16 channels. Users
can use the loop outputs to daisy chain
several XG together or for other
purposes.
8 CHANNEL MODE.(Channel A to H)
16 CHANNEL MODE.(Channel A-R, A-L,
B-R, B-L, C-R, C-L, D-R, D-L, E-R, E-L,
F-R, F-L, G-R, G-L, H-R & H-L
9~15 CHANNEL MODE
BRIDGE MODE.
2CHMODE.

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6. SPEAKERS TERMINALS x 8
7. RS232 Connector.
8. IR IN & IR OUT
The XG is equipped with 4-circuit plug-
able Terminal Blocks allow quick
connections of the internal amplifiers to
stereo pairs of speakers in the various
zone rooms. They accept wire sizes for
14 to 28 AWG. The following describes
the connections for Bridge and 2 CH ope
rations;-
XG can be hooked to a control system
through the RS232 connector. The XG
can be hooked up to USB Hub or
Ethernet Switch through RS232 to USB
or RS232 to Ethernet adaptor. Through
the RS232 connector the control system
can turn XG ON or OFF. For details of
Commands, please refer to appendix I.
IR signal from rooms or IR OUT of other
units can be connected to the 3.5mm mini
IR IN jack on the rear panel of XG. So,
XG can be controlled by the IR remote
control in each room through IR sensor.
There is IR OUT as buffered output of IR
IN for controlling units hooking up to XG
or operating as daisy chain for the IR
signal passing through the system.
2 CH MODE.
BRIDGE MODE.
When the MODE SWITCH
of the XG are set to 2 CH operation,
simply connect the wires from L
loudspeakers to the L sides of speaker
terminal blocks (marked - and +) of CH-A
to CH-H and R loudspeakers to the R
sides of speaker terminal blocks (marked
- and +) of CH-A to CH-H. Make sure
that the red terminal on each loudspeaker
is connected to the corresponding +
terminal on each speaker terminal block
and likewise for the black terminal on
each loudspeaker to each - terminal on
each speaker terminal block .
When the MODE
SWITCHES are set to BRIDGE mode
operation, only the + terminals on the
speaker terminal blocks of XG are used.
For this mode of operation, connect the
red terminal of the each speaker to the L+
terminal of each CH speaker terminal
block and the black speaker terminal to
the R+ terminal of each CH speaker
terminal block.
NOTE: The XG amplifier is normally used
in Bridge or 2 CH modes for all CH A
through CH H. However, it can also can
be set to operate as some Channels for
2CH and other channels for bridge mode.
So the XG will be capable of driving some
8 ohm loudspeaker at 100 watts and
other 4 ohm loudspeakers at 50 watts per
channel. To set the XG in this mode of
operation, please consult your AMC
dealer.
9. AUDIO SENSE/TRIGGER/CONSTANT
SWITCH
The remote power switch is located on
the back panel of the AMC XG and
provides the following functions;
When the remote power
switch is set in the AUDIO SENSE
position, the XG is turned on or off
automatically, depending on the audio
signal level at the inputs. With an audio
signal greater than 10 mV at any of the
four stereo inputs of XG, the amplifier will
automatically turn on. If the signal level
drops below this level, the amplifier will
remain on for a period of approximately 5
minutes before it automatically reverts to
standby mode.
Please note that when AC power is first
applied to the XG while the remote power
switch is in the AUDIO SENSE position,
the amplifier will automatically turn on,
even without an audio signal being
present at any of the audio inputs.
However, after approximately 5 minutes,
the amplifier will revert to standby mode,
assuming no signals are present at any of
the inputs.
AUDIO SENSE.

TRIGGER.
CONSTANT.
When the remote power
switch is set in the TRIGGER position,
the AMC XG can be turned on
automatically by an external trigger
voltage. The trigger voltage is applied to
the trigger input socket, located on the
back panel of the XG.. This trigger
voltage can originate from a system
controller or from another XG. The
sensitivity of this input ranges from +3V
DC/AC to +30V DC/AC. The current
required from the trigger source is only
0.2mA.
The XG is also provided with a trigger
output socket, also located on the back
panel. When the XG is turned on, the
trigger output socket provides a +12Vdc
Signal that can be looped through or
"daisy-chained" to the trigger input of
another XG amplifier (or other
component) in a multi component
installation. When the external trigger
voltage is set to 0V, the XG will be in
standby mode and the voltage from the
trigger output socket will likewise be 0V.
When the remote power
switch is set in the CONSTANT position,
the power on and off states of the AMC
When the remote power switch is set in
the TRIGGER position, the AMC XG can
be turned on automatically by an external
trigger voltage. The trigger voltage is
applied to the "3~30V DC/AC IN" trigger
input socket. This trigger voltage can
originate from a system controller or from
another XG. The sensitivity of this input
ranges from +3V DC/AC to +30V DC/AC.
The current required from the trigger
source is only 0.2mA.
When the XG is turned on, the "12V DC
OUT" trigger output socket provides a
+12Vdc Signal that can be looped
through or "daisy-chained" to the trigger
input of another XG amplifier (or other
component) in a multi component
installation. When the external voltage is
set to 0V, the XG will be in standby mode
and the voltage from the trigger output
socket will likewise be 0V.
XG are controlled by the front panel
master power on/off switch.
NOTE: The bi-color power LED above the
front panel power switch, indicates the
power status of the XG. This LED will
light up RED when the XG is in stand-by
mode and GREEN when turned on.
11. FUSE
1.POWER SWITCH AND POWER
INDICATOR.
There is T5AL 250V fuse put inside the
fuse holder besides AC Inlet. Replace
always with the same type of fuse.
The press button switch marked power
can be used to switched the XG on or off.
When the XG is switched on, the led
above the power switch will light up.
FRONT PANEL.
10. 12V DC OUT & 3~30V DC/AC IN
6

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SPECIFICATIONS
Weltronics Corp. reserved the right to improve its products at any time. Specifications are
subject to change without notice.
BRIDGE MODE
2 CHANNEL MODE
Power output into 8 ohms (20Hz~20KHz) .........................................................100W
Rated THD. .......................................................................................................0.05%
Damping factor ....................................................................................................>100
Input sensitivity for 1W/100W into 8 ohm ................................................110mV/1.1V
Power output into 4 ohms (20Hz-20KHz) ............................................................50W
With all channels driven
Rated THD. .......................................................................................................0.05%
Damping factor ....................................................................................................>100
Input sensitivity for 1W/50W into 4 ohms ............................................100mV/700mV
Input impedance ................................................................................R=10K C=200pf
Frequency response 20Hz~20KHz ................................................................+/-0.5dB
"A" WTD. signal to noise ratio (ref. 1W/8 ohms) ...............................................100dB
Dimensions (WxHxD) ..................................................Standard 432 x 147 x 294 mm
Rack Mount 482.6 x 147 x 294 mm
Net weight .............................................................................................................10.5kg
Shipping weight (One inner carton in one shipping carton)..................................12.5kg
Power consumption ...........................................................................110V~120V AC 2A
230V~240V AC 1A
Specifications are subject to change without notice.

APPENDIX I - SERIAL COMMUNICATION
SPECIFICATIONS
*RS232 asynchronous serial
communication
*9600 bps, 8 bits, 1 stop bit, no parity
*no flow control
Full command format:
Full command format is based on human
readable ASCII characters. All codes are
separated with field separators and
terminated by line terminator.
field separator
separator for fields in the command line
one or more spaces
line terminator
terminator for the command line
CR, LF, CR/LF, or LF/CR
Turn Power On:
POWER ON<CR>
Turn Power Off:
POWER OFF<CR>
Read Power Status:
POWER<CR>
RETURN: "ON" or "OFF"
Power Toggle:
POWER TOGGLE<CR>
Display unit identity:
Display the brand name of this unit:
BRAND<CR>
Display the model name of this unit:
MODEL<CR>
Display the current version of the
firmware:
VERSION<CR>
Reset unit:
Reset and reboot the system by
issuing the following command:
RESET<CR>
To restore all "Setup" values to factory
default:
FACTORY<CR>
To enter firmware upgrade mode:
FIRMWARE<CR>
After software upgrade mode is entered,
the firmware upgrade software needs to be
executed from a PC or supplied upgrade
system in order to start the upgrade
process.
To enter test mode:
TEST<CR>
HARDWARE SPECIFICATION
SOFTWARE SPECIFICATION
COMMAND REFERENCE
Power On/Off
System Commands
Restore to factory default:
Enter firmware upgrade mode:
Enter test mode:

All the safety and operating instructions should be read
before the appliance is operated.
The safety and operating instructions should be retained for
future reference.
All warnings on the appliance and in the operating instructions
should be adhered to.
All operating and use instructions should be followed.
The appliance should not be used near water - for example,
near a bathtub, washbowl, kitchen sink, laundry tub, in a wet
basement, or near a swimming pool, etc.
The appliance should be used only with a cart or stand that is
recommended by the manufacturer.
An appliance and cart combination should be
moved with care. Quick stops, excessive force,
and uneven surfaces may cause the appliance
and cart combination to overturn.
This equipment is not designed for use mounted on a wall or a
ceiling.
The appliance should be situated so that its location or position
does not interfere with its proper ventilation. For example, the
appliance should not be situated on a bed, sofa, rug, or similar
surface that may block the ventilation openings, or placed in a
built-in installation, such as bookcase or cabinet that may
impede the flow of air through the ventilation openings.
The appliance should be situated away from heat sources
such as radiators, heat registers, stoves, or other appliances
including amplifiers) that produce heat.
The appliance should be connected to a power supply only of
the type described in the operating instructions or as marked
on the appliance.
Power-supply cords should be routed so that they are not likely
to be walked on or pinched by items placed upon or against
them, paying particular attention to cords at plugs,
convenience receptacles, and the point where they exit from
the appliance
The appliance should be cleaned only as recommended by
the manufacturer.
The power cord of the appliance should be unplugged from the
outlet when left unused for a long period of time.
Care should be taken so that objects do not fall and liquids are
not spilled into the enclosure through openings.
The user should not attempt to service the appliance beyond
that described in the operating instructions. All other servicing
should be referred to qualified service personnel.
The appliance should be serviced by qualified service
personnel when:
a) The power-supply cord or the plug has been damaged; or
b) Objects have fallen, or liquid has been spilled into the
appliance; or
c) The appliance has been exposed to rain; or
d) The appliance does not appear to operate normally or
exhibits a marked change in performance; or
e) The appliance has been dropped, or the enclosure is
damaged.
APPLIES TOTUNERAND RECEIVERS ONLY)
An outdoor antenna should be located away from power lines.
APPLIES TOTUNERAND RECEIVERS ONLY)
If an outside antenna is connected to the receiver, be sure the
antenna system is grounded so as to provide some protection
against voltage surges and built upstatic charges.
Section 810 of the National Electrical Code, ANSI/NFPANo.
70-1984, provides information with respect to proper
grounding of the mast and supporting structure, grounding of
the lead-in wire to an antenna discharge unit, size of grounding
conductors, location of antenna-discharge unit, connection to
grounding electrodes, and requirements for the grounding
electrode. See Figure.
a) Use No. 10 AWG 5.3 mm ) copper, No. 8 AWG 8.4 mm )
aluminum, No. 17 AWG 1.0 mm ) copper-clad steel or
bronze wire, or larger, as a ground wire.
b) Secure antenna lead-in and ground wires to house with
stand-off insulators spaced from 4-6 feet 1.22-1.83 m)
apart.
c) Mount antenna discharge unit as close as possible to where
lead-in enters house.
d) Use jumper wire not smaller than No.6 AWG 13.3 mm )
copper, or the equivalent, when a separate antenna-
grounding electrode is used. See NEC Section 810-21 j).
1. READ INSTRUCTIONS
2. RETAIN INSTRUCTIONS
3. HEED WARNINGS
4. FOLLOW INSTRUCTIONS
5. WATER AND MOISTURE
6. CARTS AND STANDS
6A.
7. WALL OR CEILING MOUNTING
8. VENTILATION
9. HEAT
10. POWER SOURCES
11. POWER-CORD PROTECTION
12. CLEANING
13. NON USE PERIODS
14. O JECT AND LIQUID ENTRY
15. SERVICING
16. DAMAGE REQUIRING SERVICE
17. POWER LINES
18. OUTDOOR ANTENNA GROUNDING
SAFETY INSTRUCTION
S3125A
PORTABLE CART WARNING
Antenna Lead
In Wire
Ground
Clamp
Electric
Service
Equipment
Power Service Grounding
Electrode System
(NEC Art 250 Part H)
Ground Clamps
Antenna
Discharge
Unit (NEC
Section 810.20)
Grounding Conductors
(NEC Section 810.21)
Antenna Grounding According to
the National Electrical Code
National Electrical Code
Available from Library, book
stores, or National Fire Protection
Association(BatterymarchPark,
Quincy. A 02269).
AMC 21-3004

PN: 21-4190