AMI NGX MINI 2 Operating instructions

U.S. and Canada; call toll-free: Outside the U.S. and Canada; call:
1-877-ROC_N_ROL (1-877-762-6765) [phone]
E-Mail: [e-mail] Web: www.amietertainment.com 22022623 Rev B
Installation & Owner’s Manual
With 1000 Watt Amplifier

AMI NGX MINI 2 JUKEBOX WARRANTY
AMI extends the original operator of this equipment the following warranty:
All parts are guaranteed to be free of defects in material and workmanship for the specific periods listed. AMI agrees to repair or replace
without charge during such period any part which proves defective upon examination by AMI. All costs of shipping a defective part to AMI’s
offices shall be borne by the original operator. AMI shall bear the shipping costs for the replacement of defective parts.
Component
Warranty Period (from date of shipment) Condition
Electronic Circuit Boards 2 Years Parts
Core Computer Motherboard 1 Year Parts
Electrical & Mechanical 2 Years Parts
LCD Display 1 Year Parts
Touch Screen Sensor 1 Year Parts
Touch Screen Controller 1 Year Parts
Hard Drives Life* *Full Replacement by AMI, at no charge, for the life
of the AMI Entertainment® contract.
In the case of parts supplied to AMI as components, AMI extends the same warranty period as extended by the original manufacturer.
The above warranty applies provided that all parts of the product have been serviced properly as directed in the service manual, and
provided the alleged defective part, upon examination by AMI, shall prove to be thus defective. Under no circumstances shall AMI be liable
for any incidental, consequential or special damages, losses or expenses arising from or in connection with the use of, or the inability to use,
the product for any purpose. AMI reserves the right to make any changes or improvements in its products without notice and obligation, and
without being required to make corresponding changes or improvements in products theretofore manufactured or sold.
This warranty will not apply to any product or any part which has been subjected to any accident, abuse, or misuse.
AMI ENTERTAINMENT NETWORK, LLC EXTENDS NO WARRANTY, EXPRESSED OR IMPLIED, TO PURCHASERS OR USERS OF
ITS PRODUCTS EXCEPT AS HEREIN SET FORTH, WHETHER BY OPERATION OF LAW OR OTHERWISE.

NGX Mini 2 Jukebox 1 22022623 Rev B
Table of Contents
Important Safety Instructions ________________________________________ 2
Section A - Jukebox Specifications ___________________________________ 3
Section B - Placing the Wall-Mounted Jukebox on Location _______________ 5
Location Power and Warnings _________________________________________________ 6
Jukebox Power and Reset Switch ______________________________________________ 7
Wall Mounting Instructions ____________________________________________________ 8
IR Remote Installation Instructions ____________________________________________ 10
Testing the Unit ___________________________________________________________ 11
Lighting Controller _________________________________________________________ 12
Marquee Display __________________________________________________________ 12
Section C - Sound System Set Up ___________________________________ 13
Extension Speaker Operation ________________________________________________ 14
Selecting Speaker Power____________________________________________________ 14
Selection Procedures____________________________________________________ 14
Extension Speakers Connected to Amplifier Channel + and – terminals ____________ 15
Amplifier Overload Check ___________________________________________________ 15
Section D - Service & Maintenance __________________________________ 19
Recommended Routine Maintenance __________________________________________ 20
Calibrating the Touchscreen _________________________________________________ 21
Hard Drive Replacement ____________________________________________________ 21
Section E - Troubleshooting ________________________________________ 23
LED Indicators ____________________________________________________________ 24
Troubleshooting Charts _____________________________________________________ 26
Connection Diagrams_______________________________________________________ 28
Section F - Parts Catalog___________________________________________ 35
Front Door _______________________________________________________________ 36
Currency Components ______________________________________________________ 39
Currency Components ______________________________________________________ 40
Electronic Components _____________________________________________________ 41
Accessories ______________________________________________________________ 44

22022623 Rev B 2 NGX Mini 2 Jukebox
Important Safety Instructions
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Do not block any ventilation openings. Install in
accordance with the manufacturer’s instructions.
7. Do not install near any heat sources such as
radiators, heat registers, stoves, or other
apparatus (including amplifiers) that produce
heat.
8. Do not defeat the safety purpose of the polarized
or grounding-type plug. A polarized plug has two
blades with one wider than the other. A
grounding type plug has two blades and a third
grounding prong. The wide blade or the third
prong is provided for your safety. If the provided
plug does not fit into your outlet, consult an
electrician for replacement of the obsolete outlet.
9. Protect the power cord from being walked on or
pinched, particularly at plugs, convenience
receptacles, and the point where they exit from
the apparatus.
10. Only use the attachments/accessories specified
by the manufacturer.
11. Use only with the bracket specified by the
manufacturer or sold with the apparatus.
12. Unplug this apparatus during lightning storms or
when unused for long periods of time.
13. Refer all servicing to qualified service personnel.
Servicing is required when the apparatus has
been damaged in any way, such as when the
power-supply cord or plug is damaged, liquid has
been spilled or objects have fallen into the
apparatus, the apparatus has been exposed to
rain or moisture, does not operate normally, or
has been dropped.
The exclamation point within an equilateral
triangle is intended to alert the user to the
presence of important operating and
maintenance servicing instructions in the
literature accompanying the jukebox.
The lightning flash with arrowhead
symbol, within an equilateral triangle is
intended to alert the user to the presence
of uninsulated “dangerous voltage” within
the product’s enclosure that may be of
sufficient magnitude to constitute a risk
of electric shock to persons.
WARNING
To reduce the risk of fire or electric shock, do not expose this apparatus to rain or
moisture. No objects filled with liquid, such as vases, shall be placed on the apparatus.
AVERTISSEMENT
Pour réduire le risque d'incendie ou un choc électrique, ne pas exposer cet appareil à
la pluie ou à l'humidité. Aucun objet rempli de liquide, comme les vases, ne doit être
placé sur l'appareil.
CAUTION!
RISK OF ELECTRIC SHOCK. DO NOT OPEN
DO NOT REMOVE ANY COVERS, GUARDS, OR SHIELDS.
NO USER SERVICEABLE PARTS ARE INSIDE THIS JUKEBOX.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
ATTENTION!
RISQUE DE CHOC ÉLECTRIQUE. NE PAS OUVRIR
NE JAMAIS RETIRER LES COUVERCLES, GARDES, OU DES BOUCLIERS.
AUCUNE PIÈCE RÉPARABLE DANS CE JUKEBOX.
CONFIER L'ENTRETIEN DE PERSONNEL QUALIFIÉ.

NGX Mini 2 Jukebox 3 22022623 Rev B
Section A -
Jukebox Specifications
NGX MINI
2
Dimensions:
Uncrated:
Height 31”
Width 19.5”
Depth 8”
Crated:
Height 35”
Width 24.5”
Depth 12”
Weight:
Uncrated 66 lbs.
Crated 85 lbs.
Amplifier:
Output Power:
(Standard) 1000 Wrms into 2 Ohm Load
Protection: Thermal and speaker overload
Automatic, self resetting
Voltage:
115VAC
Frequency:
60Hz
LCD:
18.5” HD flat screen
Speakers:
none

22022623 Rev B 4 NGX Mini 2 Jukebox
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NGX Mini 2 Jukebox 5 22022623 Rev B
Section B -
Placing the Wall-Mounted Jukebox on Location
•Location Power and Warnings
•Jukebox Power and Reset Switch
•Wall Mounting Instructions
•IR Remote Installation Instructions
•Testing the Unit
•Lighting Controller
•Marque Display

22022623 Rev B 6 NGX Mini 2 Jukebox
Location Power and Warnings
The jukebox must have a clean source of properly-phased and grounded 115VAC
power at 10 amps max. This MUST be provided 24 hours a day, 7 days a week.
The outlet the jukebox is connected to must NOT be controlled by a switch, nor
should the circuit breaker feeding it be shut off at night.
If the outlet is not properly phased, grounded, or is connected to an overloaded
circuit, it must be corrected by a qualified electrician before using.
The main power distribution unit is the power supply. This device contains a 10 amp fuse with a separate ON/OFF
power switch located on the bottom of the power supply chassis.
Figure 1-B – Inside View of Cabinet
with Front Door Opened
!

NGX Mini 2 Jukebox 7 22022623 Rev B
Jukebox Power and Reset Switch
The NGX MINI 2 jukebox is powered from a standard
115VAC wall plug using the provided power cord.
Inside the jukebox, power is routed to a power
distribution assembly located on the left-hand side of
the cabinet (see Figure 1-B). This assembly includes
a 10 amp fuse and separate power ON/OFF switch.
All other components in the jukebox are powered by
plugging them into this power distribution assembly.
Soft Power Down
The Core Computer and other components in the
jukebox should remain powered up at all times.
However, there may be times when the jukebox
needs to be turned off so that customers cannot
insert money or make selections. The soft power
down mode will give every outward appearance that
the jukebox is off by turning off the lights, the LCD
display, the bill acceptor(s), and the credit card
reader; however, the Core Computer and other
internal components remain powered up. There are
multiple ways to enter and exit this soft power down
mode:
•Core Computer Power Button – The button
labeled “POWER” on the Core Computer
inside the jukebox (see Figure 1-B) is used to
enter the soft power down mode. Push it
again to exit the soft power down mode.
•IR Remote Control – The button labeled
“POWER” on the IR remote control
transmitter will also toggle the soft power
state just like the button described above.
•6 Button Wired Volume Control – This
control can be modified to provide a POWER
function. See Wired 6 Button Volume Control
on page 10 for details.
Computer Core
The jukebox Computer Core can be powered off by
pressing the “SERVICE” button on the Computer
Core (see Figure 1-B), and then touching “Shutdown
Jukebox” on the touchscreen. This will turn off the
Computer Core and other components that get their
power from the ATX power supply in the Computer
Core. To restore power after turning off the ATX
power supply, the jukebox must be rebooted. Reboot
the jukebox by toggling off the main power ON/OFF
switch (see Figure 1-B) and then toggling it back on,
or by pushing the ATX Reset Switch (see “ATX Reset
Switch”).
Hard Power Down
When the jukebox power cord is unplugged or the
main power ON/OFF switch is turned off (see Figure
1-B), the jukebox is in the hard power down state. All
power is removed from all components in the
jukebox.
ATX Reset Switch
There is a hidden ATX reset switch located inside the
cabinet on the upper-left side just below the cooling
fan (see Figure 1-B). It is accessible by either
opening the jukebox door, or by inserting a paper
clip, toothpick, or other long, thin object through the
access hole on the left side of the jukebox.
•The ATX Reset Switch resets the Computer
Core. This is like the reset switch on a PC.
Pressing and releasing this switch will cause
the computer main board to completely
reboot. Use this switch only if the jukebox is
completely non-responsive. Additionally,
when the Computer Core has been powered
down using the “Shutdown Jukebox” option
in Service Mode, pushing this button will
restart the computer.

22022623 Rev B 8 NGX Mini 2 Jukebox
Wall Mounting Instructions
Choosing the Location
The jukebox must be mounted on a strong, flat wall. It
is recommended that a sub panel made from ¾”
plywood or similar material be used and properly
shimmed to provide a flat mounting surface. The
jukebox should be visible and convenient to use. Do
NOT install directly above a radiator or other source
of heat. Be sure the speaker wires can be easily run
to the unit.
WARNING
The mounting of the jukebox on the wall
should be done by a qualified installer
familiar with wall construction and loading.
The wall and installation hardware MUST be
capable of supporting a 700 lb. load for the
NGX MINI 2. Failure to follow these
instructions could result in serious injury.
Tools and hardware required for normal installation
into wood wall studs:
•Socket wrench with 3/8” and 7/16” sockets
•Level
•Pencil
•Punch or awl (to start the lag screws) and/or drill
driver
•(4) 1/4” x 1-1/2” lag screws provided
Mounting the Jukebox Cabinet
1. Remove the jukebox cabinet from its packing
carton. Open the door, ensure all cables are
detached from the door, and then lift the door off
of the cabinet. Set the door aside for the
moment.
2. Install a subpanel or locate a wall stud roughly
in the center of where the jukebox will be
mounted. See Figure 2-B.
3. Install the first ¼” x 1½” lag screw 65” up from
the floor. If not using a subpanel, center the lag
screw on a wall stud. This should be on the
centerline of the jukebox. See Figure 2-B.
4. Hang the jukebox cabinet on this lag screw
using one of the upper keyholes in the back of
the jukebox cabinet (see Figure 2-B). Ensure
the jukebox cabinet is level and mark the wall
for the lower keyhole and the mounting holes in
the top right and top left of the cabinet (See
Figure 2-B).
Figure 2-B – Inside View of the Cabinet
5. Remove the jukebox cabinet from the wall, drill
pilot holes for the remaining lag screws, re-hang
the jukebox cabinet and secure it to the wall
using the additional lag screws provided.
NOTE: If the wall is concrete, cinder block, brick, or
uses metal wall studs, then a subpanel with the
appropriate fasteners must be used. At least 4”
heavy-duty fasteners (one in each corner) must be
employed. The fasteners and subpanel must be able
to support a minimum 700 lbs. Do NOT use “press-in”
anchors or any other “light” or “medium” duty
fasteners. Consult a contractor experienced in the
type of construction used if there is any doubt about
the strength of the mounting devices.
6. Prepare the external wiring. The power cord,
speaker wiring, and Ethernet cable can be
routed to enter the top or the bottom of the
jukebox. Use the block-out plates and nuts to
secure the wiring.

NGX Mini 2 Jukebox 9 22022623 Rev B
8. The front door is secured using slide hinges,
which do not require tools to attach. To attach
the front door, carefully lift the door, line up the
hinge pins on the cabinet with the mating hinge
barrels on the front door, and lower the door
(see Figure 3-B).
Figure 3-B – Detail View of Top Cabinet Hinge
9. Locate the bundle of loose cables in the inside
back of the cabinet. Route the cable bundle to
the front door and into the cable clamps on the
hinge side of the door (see Figure 4-B). Connect
the LCD power, VGA, and USB Touch
Controller cables to the back of the LCD.
10. Connect the free end of the credit card reader
cable (coming from the USB port on the
Computer Core) to the card reader.
11. Connect the free ends of the Audio cable, two-
wire power connector, and Rowelink cable to
the LED Controller Interconnect board.
12. Connect the free ends of the 15-pin cables from
the cabinet and door together.
13. Make sure all cables are dressed properly. Use
the cable clamps in the jukebox to keep cables
in place. Make sure nothing interferes with
opening and closing the door.
HINGE
PIN ON
CABINET
CABINET
DOOR
HINGE
BARREL
ON FRONT
DOOR
Figure 4-B – Inside View of NGX MINI 2 Jukebox with Front Door Opened

22022623 Rev B 10 NGX Mini 2 Jukebox
IR Remote Installation Instructions
IR Remote Control Installation Instructions
The NGX Mini 2 Jukebox comes with an IR remote
(located in the Handy Pack). To install, plug the
provided cable into the provided IR remote receiver
(see Figure 10-B) and route the other end of the
cable through one of the wire access holes in the
cabinet. Connect the end of the cable into the port
labeled “IR Receiver” on the Core Computer. Install
the IR remote receiver above the jukebox, with a
clear line of sight between the receiver and the
handheld transmitter. Plug in and turn on the jukebox
and test the remote.
Figure 10-B – IR Remote Receiver
Button Functionality on the IR Remote
Transmitter
To enable or disable options on the IR remote, see
“IR Remote Setup” in the Network Setup, Jukebox
Operation, Operator Setup Screens Manual.
REJECT
This button is used to cancel (or “reject”) the
selection currently playing, and cancels all (rejects
all) selections in the queue if held down for four
seconds. This functionality can be enabled and
disabled through the software.
POWER
This button turns the lights, the LCD display, the bill
acceptors, and the credit card reader ON/OFF. To
turn them back on and resume normal operation,
press the “POWER” button again.
VOLUME
The CH1+ and CH2+ buttons raise the volume.
The CH1– and CH2– buttons lower the volume.
The PLAY button puts the jukebox in play mode.
The PAUSE button puts the jukebox in pause mode
for a programmed amount of minutes or until the
PLAY button is pushed.
The AP OFF and AP ON buttons turn any
programmed Autoplay mode on/off.
The FUTURE button is used to give a remote credit.
The VID SEL button is used to enable and disable
video selections on the jukebox.
Wired 6 Button Volume Control
The NGX Mini 2 Jukebox also comes with a small 6
button wired remote control. This control is designed
to be mounted close to the jukebox and provides
some basic functions.
INT.
These buttons change volume for Channels 1 & 2.
EXT.
These buttons change volume for Channels 3 & 4.
CANCEL
This button will cancel the selection currently playing.
MUTE
This button toggles the jukebox between PAUSE
mode and PLAY mode.
The MUTE button on this remote can be repurposed
to function as a POWER button.
Remove the back cover of the remote control then
remove the circuit board. There are two shunt
jumpers located on the board. When these jumpers
are both in the right hand position, the MUTE button
functions as MUTE.
Move both shunt jumpers to the LEFT hand position
to repurpose the MUTE button to function as a
POWER button.
RECEIVER MUST
BE INSTALLED
WITH SENSORS
FACING FRONT
CABLE
CONNECTED
TO TOP OF
RECEIVER

NGX Mini 2 Jukebox 11 22022623 Rev B
Testing the Unit
Initial Set Up
When all of the network connections have been
made, boot up the jukebox. The first time you turn on
the jukebox with a new hard drive, you will see the
Local Music Configuration Screen, which lists the
available local music configurations that can be
installed on the jukebox. You will be prompted to
select one of the available lists. This selection can be
changed at any time by pressing the SERVICE
button on the Computer Core, and then touching
System Setup -> Advanced Administration ->
Local Music Configuration.
Touch the View button to display a dialog box listing
all of the albums in the selected list. Some albums
may appear grayed out; this means that some or all
of the songs in the album are not currently stored on
this jukebox. If a list with grayed albums is installed,
the grayed albums will start being downloaded to the
jukebox within 24 hours (as long as the jukebox is
connected). If the jukebox becomes disconnected,
any songs not yet downloaded will be unavailable to
patrons.
Touch the Install button to display a dialog box
prompting you to install the selected list. To install the
selected list, touch the Install button at the bottom of
the dialog box.
Testing the Touchscreen, Bill and Coin
Acceptor(s), and Credit Card Reader
Touchscreen – Every time a new hard drive is
installed, the touchscreen should be calibrated.
Follow these steps to calibrate.
1. Press the “CALIBRATE” button on the Computer
Core (see Figure 1-B) to launch the calibration
program.
2. Close the jukebox door and make sure it is
locked.
3. Follow the directions on the screen, touching the
center of the targets, and then touching different
areas on the screen. If the cursor follows your
movement, touch YES to exit.
Bill/Coin Acceptor(s) and Credit Card Reader –
(NOTE: Credit Card functionality requires a
broadband Internet connection).
1. Press the “SERVICE” button on the Computer
Core to enter Service Mode.
2. Touch the Diagnostics button.
3. Touch Credit Device Tests.
4. To test the bill acceptor(s), insert a $1, $5, $10,
and $20 bill (into each bill acceptor, if the jukebox
has two) and check the screen to make sure
proper credit is awarded.
5. To test the coin acceptor (if installed), deposit
coins into the coin slot and verify proper credit is
awarded.
6. To test the credit card reader, swipe a valid credit
card and check that the screen displays the last
four digits of the credit card.
7. When finished, touch the Back button to return to
the Main Menu.
Testing the Network
Enter Service Mode by pressing and releasing the
“SERVICE” button on the Computer Core. To test the
network:
1. Touch the System Setup button on screen and
then touch Advanced Administration.
2. On the Advanced Administration Screen, touch
Configure Server. Then touch the Test
Connection button. This test confirms the
jukebox can connect to AMI’s server (“Server
Found”), and authenticate a connection with
AMI’s server (“Connected”).
3. If the connection is successful, you will see “Yes”
next to “Server Found” and “Connected”. If the
connection fails, you will see “No”. If the
connection fails, check the settings on the
Network Information Screen (Diagnostics –>
Network Information). This screen will allow you
to check the IP Configuration and run LAN and
WAN tests.
Testing the Audio
NOTE: For operators pre-testing the jukebox in their
own facility, any features in the application
associated with the network will not work unless the
jukebox is connected to the Internet.
1. If the jukebox is not in Service Mode, press the
“SERVICE” button on the Computer Core to enter
Service Mode.
2. Add one (or more) credits to play a song and test
the audio. Touch Cash Management and then
touch Credit Management.
3. Touch the box under “Credits” and a pop-up box
will display.
4. Touch Clear to remove the “0” from the box.
5. Touch 1(or more) and then touch Update.
6. Touch Save on the Credit Management Screen.
7. Touch Exit Service Mode.
8. After connecting speakers to the jukebox (see
section C), play a local music selection to test the
audio.

22022623 Rev B 12 NGX Mini 2 Jukebox
Lighting Controller
The NGX MINI 2 lighting assembly can be
programmed for several different modes of operation.
By default, the lighting assembly is set to display
random colors and random patterns.
To change the mode, open the main door of the
jukebox. The LED controller is located on the back of
the door just above the currency panel. There are two
adjustment pots on the board marked BRIGHT and
SPEED. These are used to set the brightness of the
LEDs and adjust the speed of color changes for the
color cycle display modes.
The five position DIP switch is used to set the
operating mode of the controller. Use the following
table to set the mode.
Beat to the Music
The NGX Mini 2 includes an audio interface, located
next to the LED Controller, which allows the LEDs to
change to the beat of the music.
To disable this feature, move jumper JP1 to the “P”
position and rotate the pot R14 fully clockwise, or
simply disconnect the audio cable going to the board.
SW1
SW2
SW3
SW4
SW5
Mode
OFF OFF OFF OFF ON Color cycle – quick change between colors
ON OFF OFF OFF ON Static – Red
OFF ON OFF OFF ON Static – Yellow
ON ON OFF OFF ON Static – Green
OFF OFF ON OFF ON Static – Cyan
ON OFF ON OFF ON Static – Blue
OFF ON ON OFF ON Static – Magenta
ON ON ON OFF ON Static – White
OFF OFF OFF ON ON Static – Orange
ON OFF OFF ON ON Static – Rose
OFF ON OFF ON ON Color cycle – Rainbow: Pastels
ON ON OFF ON ON Color cycle – Patriotic: Red, White and Blue
OFF OFF ON ON ON Color cycle – Holiday: Reds and Greens
ON OFF ON ON ON Color cycle – programmed colors and patterns
OFF
ON
ON
ON
ON
Color cycle
–
rand
om colors and patterns (default)
ON ON ON ON ON Color cycle – gradual change between colors
--- --- --- --- OFF LED lighting OFF
Marquee Display
Graphic Panel
The back lit Graphic Panel in the marquee can easily
be changed to your own custom panel. To change
the graphic panel, follow these steps.
1. Power off the jukebox.
2. Disconnect the 15 pin connector separating
the door harness from the cabinet harness.
Disconnect the two pin connector at J2 of the
LED Controller, disconnect the USB cable at
the back of the card reader.
3. Remove the two cable clamps holding the
door harness (or take the harness out of the
clamps).
4. Remove the 4 screws holding the currency
panel to the door. Remove the currency
panel from the front of the jukebox.
5. Place the currency panel face down on a
work surface. Remove two #8-32 hex nuts
and lift off the backlight panel. Remove the
clear spacer and the graphic panel.
Place the new graphic panel in the opening and
reverse the steps to reinstall your currency panel.
Graphic Panel specifications (recommended):
Material: Backlit Duratrans (or equivalent)
Finished thickness: 7 mils
Dimensions: 3-1/4” high x 14” long

NGX Mini 2 Jukebox 13 22022623 Rev B
Section C -
Sound System Set Up
•Extension Speaker Operation
•Selecting Speaker Power
•Speaker Connection Diagrams

22022623 Rev B 14 NGX Mini 2 Jukebox
Sound System Set Up
The NGX Mini 2 jukebox sound system is powered by a 1000 Watt S-Pro2 Class 2 power amplifier manufactured
by Pascal. Speaker terminals are provided to connect extension speakers directly to the amplifier. An Audio
Output Transformer Kit (part number 22180806) is available if your installation uses 70 volt speakers or you need to
connect extension speakers using various power taps.
Extension Speaker Operation
To avoid poor sound quality, care must be taken when adding extension speakers. The following requirements
must be met:
•Speakers connected to the amplifier must be wired so the power consumed by the extension speakers
does not exceed the amplifier power rating of 500 watts per channel.
•Complete the Extension Speaker Worksheet (Table 1-1) for each channel and verify it does not exceed
the 500 watt amplifier channel rating. After wiring the speakers, perform the Amplifier Overload Check
immediately following Table 1-1.
•All speakers must be connected with the correct polarity (see Figure 1-A).
•Do not bridge output channels.
Low Impedance Speakers
Low impedance speakers (16, 8, or 4-ohm) can be used when the connecting cable is less than 100 feet. Keep
the following two things in mind when wiring your speakers:
1. No more than one 4-ohm speaker should be connected to a speaker line. If several 4-ohm speakers are to
be used, each speaker should have its own line.
2. The loss in 100 feet of 18-gauge zip-cord feeding on an 8-ohm speaker is 15%. The loss for two 8-ohm
speakers is 30%.
Selecting Speaker Power
General Instructions
This section will lead you through the power and speaker selection process. This process consists of three
major steps and several smaller steps. The major steps are:
1. Identify the extension speakers and compute the speaker power for speakers connected directly across the
amplifier.
2. Make the extension speaker connections.
3. Perform an amplifier overload check (see instructions immediately following Table 1-1).
Selection Procedures
•Use a pencil (you may want to revise your figures) to fill in the Extension Speaker Worksheet on the
following pages.
•Use the Table 1-1 Worksheet to help you calculate the amount of power consumed by the extension
speakers.
•An extension speaker RMS power rating should be at least 10% higher than the power it will consume at
maximum jukebox volume.
When RMS power to speaker
at maximum jukebox volume is: Then recommended RMS power rating of speaker is:
240 watts 300 watts
120 watts 150 watts
60 watts 75 watts
30 watts 40 watts

NGX Mini 2 Jukebox 15 22022623 Rev B
Table 1-1 –Extension Speaker Worksheet
Sheet 1
Extension Speakers Connected to Amplifier Channel + and – terminals
Place the quantity of speakers in the blank under Qty and multiply the quantity times the power consumption. Place
your results in the blank under Total.
Qty Total
CH 1 CH 2 CH 1 CH 2
Two 8-ohm speakers in series:
(30 watts to each speaker) ______ ______ at 60 watts per series = ______ ______ watts
Two 4-ohm speakers in series:
(60 watts to each speaker) ______ ______ at 120 watts per series = ______ ______ watts
8-ohm speakers: ______ ______ at 120 watts each = ______ ______ watts
4-ohm speakers: ______ ______ at 240 watts each = ______ ______ watts
Total Load, sum Total columns for CH1 and CH2 ______ ______ watts
Amplifier Overload Check
Check that the amplifier is not overloaded by performing the following steps:
1. Make sure that the extension speakers are connected to the amplifier terminals properly (Channel1 + – and
Channel 2 + –).
2. If the red OVERLOAD LED is always lit, the amplifier is overloaded and will shut down. You must perform
Step 3.
3. Do this step only if the OVERLOAD LED came on as described in Step 2.
•Find the source of the overload (shorted speaker wires, shorted speaker, too many speakers
connected).
•After you fix the short, disconnect a few speakers to reduce the wattage. Repeat Step 2.
•If no overload is detected, reconnect the disconnected speakers (ensure you do not have too many
speakers, use Table 1-1). Repeat step 2.

22022623 Rev B 16 NGX Mini 2 Jukebox
Figure 1-C
300 W
4 Ohms
300 W
4 Ohms
300 W
4 Ohms
300 W
4 Ohms
300 W
4 Ohms
300 W
4 Ohms
75 W
4 Ohms
75 W
4 Ohms
75 W
4 Ohms
75 W
4 Ohms
75 W
4 Ohms
75 W
4 Ohms
150 W
8 Ohms
150 W
8 Ohms
75 W
4 Ohms
75 W
4 Ohms
Primary
Amplifier
Load as shown is
480 W per channel.
Maximum power capacity
is achieved.
NOTE: SPEAKER WATTAGE SHOWN
IS RATING OF SPEAKER
+ +
+ +
+
+
+
++
+
Load as shown is
360 W per channel.
Channel 2 +
Channel 2 -
Channel 1 +
Channel 1 -
Channel 2 +
Channel 2 -
Channel 1 +
Channel 1 -
Load as shown is
240 W per
channel
+
+
+
++
+
Channel 2 +
Channel 2 -
Channel 1 +
Channel 1 -
Primary
Amplifier
Primary
Amplifier

NGX Mini 2 Jukebox 17 22022623 Rev B
Figure 1-C (continued)
75 W
4 Ohms
150 W
8 Ohms
75 W
4 Ohms
75 W
4 Ohms
75 W
4 Ohms
75 W
4 Ohms
75 W
4 Ohms
75 W
4 Ohms
75 W
4 Ohms
75 W
4 Ohms
75 W
4 Ohms
75 W
4 Ohms
75 W
4 Ohms
75 W
4 Ohms
75 W
4 Ohms
75 W
4 Ohms
75 W
4 Ohms
75 W
4 Ohms
75 W
4 Ohms
75 W
4 Ohms
75 W
4 Ohms
150 W
8 Ohms
150 W
8 Ohms
150 W
8 Ohms
150 W
8 Ohms
150 W
8 Ohms
Primary
Amplifier
Load as shown is
480 W per channel.
Maximum power capacity is achieved.
NOTE: SPEAKER WATTAGE SHOWN
IS RATING OF SPEAKER
+ + +
+
+
++ +
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
Load as shown is
480 W per channel.
Maximum power capacity is achieved.
Channel 1 -
Channel 1 +
Channel 2 -
Channel 2 +
Channel 1 -
Channel 1 +
Channel 2 -
Channel 2 +
Primary
Amplifier

22022623 Rev B 18 NGX Mini 2 Jukebox
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