AUSTRALIAN MONITOR ESP Series ES480P Power Amplifier User Manual

: June 6, 2024
: Australian Monitor

Table of Contents

AUSTRALIAN MONITOR ESP Series ES480P Power Amplifier
IMPORTANT SAFETY INFORMATION
FEATURES & PROTECTION FEATURES
FRONT PANEL
REAR PANEL
INSTALLATION
TROUBLESHOOTING
DIMENSIONS
SPECIFICATIONS
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AUSTRALIAN MONITOR ESP Series ES480P Power Amplifier

IMPORTANT SAFETY INFORMATION

Read and Keep these instructions. Do not throw them away.
Heed all warnings
Follow all instructions
This equipment is not suitable for use in locations where children are likely to be present.
Only use indoors. Do not use outdoors
Only operate this equipment at an altitude of less than 2000km above sea level
Install the product on a stable surface or secured in a rack
Do not install near any heat sources such as radiators or other apparatus that produce heat
Do not block or insert objects into any ventilation openings
The mains plug is used as the disconnection device; it should remain readily accessible at all times
If this equipment has a protective earth terminal, it must be connected to a mains outlet with a protective earth connection
Touching speaker terminals while operational may result in an unpleasant sensation
Never expose the equipment to mechanical stress. Dropping the device from any height may damage it
This equipment should not be exposed to dripping or splashing water and no object filled with liquid, such as vases, should be placed on the equipment
Only use attachments/accessories specified by the manufacturer
Unplug this apparatus during lightning storms or when unused for long periods of time
Refer all servicing to qualified service personnel

WARNING

TO PREVENT FIRE OR SHOCK HAZARDS, DO NOT USE THE PLUG WITH AN EXTENSION CORD, RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE EXPOSURE. REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. TO PREVENT ELECTRICAL SHOCK, MATCH WIDE BLADE PLUG TO WIDE SLOT & FULLY INSERT.

CAUTION
TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT PERFORM ANY SERVICING OTHER THAN THAT CONTAINED IN THE OPERATING INSTRUCTIONS UNLESS YOU ARE QUALIFIED TO DO SO.

The lightning flash with the 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 ELECTRIC SHOCK, DO NOT REMOVE THE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL
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 appliance
For European Union countries: This symbol on the product or its packaging indicates that this product must not be disposed of with other waste. Instead, it is your responsibility to dispose of your waste equipment by handing it over to a designated collection point for the recycling of waste electrical and electronic equipment. Please contact your local authority for further details of your nearest designated collection point.

FEATURES & PROTECTION FEATURES

ES480P – 4 x 80W
100V and 4Ω outputs
XLR Through Output
Level Adjustment
2 RU

PROTECTION FEATURES

Short-circuit protection
Overload protection
Thermal protection
Input limiter

ES480P AMPLIFIER BLOCK DIAGRAM

AUSTRALIAN MONITOR ESP Series ES480P Power Amplifier FIG
1

FRONT PANEL

AUSTRALIAN MONITOR ESP Series ES480P Power Amplifier FIG
2

SIGNAL
This LED indicates the unit is outputting a signal.
POWER
This LED indicates the unit is on.
PROTECTION
This LED indicates that the amplifier is protected due to a short circuit or overload condition at the output terminals.
POWER SWITCH
This switches the power to the unit on and off. The up position is on.

REAR PANEL

AUSTRALIAN MONITOR ESP Series ES480P Power Amplifier FIG
3

INPUT
These 3 pin XLR sockets accept the source input for each channel. One input is a male XLR, the other is a female XLR. The male XLR is normally used as a thru output. When wiring from unbalanced sources, pins 1 and 3 should be shorted together. The input sensitivity (voltage required to drive the amplifier to maximum power) of the amplifier is 150mV with the Input Level Control set at maximum.
LEVEL
This potentiometer controls the level of the signal through the amplifier channel. The minimum position is Off and the maximum gives a sensitivity of 150mV. The input level control should be run above the 12 o’clock position (halfway) to avoid clipping the input stage.
SPEAKER OUTPUT
Speaker connections are provided on screw terminals. 4Ω low impedance and 100V.
IMPORTANT: If you are using the 100V output you must connect the jumper link between 4Ω and OT-IN
MINIMUM IMPEDANCE ES480P
DISTRIBUTED LINE OUTPUT 100V 125Ω
LOW IMPEDANCE OUTPUT 4Ω

NOTE: Only connect one output – either 4Ω or 100V. Do not connect 4Ω and 100V at the same time.

Touching speakers terminals while operational may result in an unpleasant sensation

IEC MAINS INPUT SOCKET
This is a standard IEC 60320-C14 socket. It accepts a standard IEC mains cable, provided. The fuse drawer contains the main fuse and a spare. Consult the specification section for fuse ratings.

Always replace the fuse with one of the same values and type.

Always disconnect power to the amplifier before replacing fuses.

INSTALLATION

POWER REQUIREMENTS
Power consumption for your model of the ESP Series amplifier is indicated on the rear panel for 1/8th output power.
Ensure that your mains voltage is the same as the rear panel mains voltage marker (±10%).
MOUNTING
The ESP Series amplifiers are two rack units high (2U) and will fit a standard EIA 19” or rack.
Typically amplifiers may be stacked directly on top of each other with no need for spacing between units unless installed in high ambient temperature environments where a single rack unit space between amplifiers will assist cooling further.
COOLING
The power amplifiers are cooled by axial fans which draw air inside the amplifier and expel the heated air outside the amplifier.
An unrestricted airflow into and out from the amplifier must be provided. Any restriction of the airflow will cause heat to build up within the unit and possibly force the unit into its thermal shutdown mode. If the amplifiers are to be operated in an environment where the airflow is restricted such as sealed racks, cooling should be supplemented by extra cooling fans to evacuate the heated air and aid the flow of cool air through the unit.
OUTPUT WIRING
When wiring to your speakers always use the largest gauge wire your connector will accept. The longer the speaker leads the greater the losses which will result in reduced power and less damping at the load. We recommend using a heavy-duty, two-core flex (four-core flex if bi-amping) 10 to 12 gauge (2mm2 to 2.5mm2 or 50/0.25 or equivalent) as a minimum.
SPEAKER OUTPUT
The output terminal strip accepts wire sizes from 13-22AWG (2.5mm2 – 0.35mm2) or spade lugs. The following table should be used as a guideline for cable sizes. Regulations in your area may require different gauged wire and should be checked before using them.

OUTPUT| DISTANCE|
---|---|---
100V| Upto 50m| AWG24(0.2mm2)
| 50m – 200m| AWG18(0.75mm2)
| Over 200m| AWG16(1.5mm2)
4Ω| Upto 10m| AWG18(0.75mm2)
| 10m – 30m| AWG13(2.5mm2)
| Over 30m| Not Recommended

NOTE: Only connect one output – either 100V or 4Ω
INPUT CONNECTIONS
When wiring balanced inputs, wire the male plug so that it mates with the female XLR on the back of the amplifier. Follow the pinouts listed in the diagram below. When wiring as an unbalanced input, wire the male plug so that it mates with the female XLR on the back of the amplifier. Connect Cold- to Gnd as there is no cold signal available in an unbalanced connection.

AUSTRALIAN MONITOR ESP Series ES480P Power Amplifier FIG
4

TROUBLESHOOTING

TROUBLE	LIKELY CAUSE	REMEDY

Power LED not on

|

Power not reaching amplifier

|

Check power switch is on Check mains connection Check mains fuse

Distorted sound

|

Output is short circuit Input is overloaded

Output is being overdriven

|

Check speaker loads for shorts Reduce input level at source Reduce volume levels on the rear panel

No sound but the amplifier is on

| Volume controls down Amplifier has overheated|

Check volume controls

Check for obstructions above and below Make sure the amplifier is well ventilated

DIMENSIONS

AUSTRALIAN MONITOR ESP Series ES480P Power Amplifier FIG
5

SPECIFICATIONS

	OUTPUT 1 – 4	Conditions/Comments

AUDIO
4Ω (ALL CHANNEL DRIVEN)

100V (ALL CHANNEL DRIVEN)

| 87W

81W

|

1kHz. 1%THD. -5W/+5W

84dB

-60 dBV (1KHz to 20KHz)

| (Ch to Ch) 100V
AUDIO INPUT SENSITIVITY| 150mV| Rated Power, 100V Output
NO LOAD VOLT.4Ω| 15.7V| 4Ω
LOADED VOLT 4Ω| 15.2V| 4Ω
LED SIGNAL| -40dBV|
INPUT IMPEDANCE| 20kΩ|
INPUT CMRR| > 59dBV| 150mV

SPECIFICATIONS CONT.

			Conditions/Comments

1/8TH POWER

1/3RD POWER FULL POWER

|

0.16A

0.50A

0.76A

2.00A

|

230V AC, 50Hz, 100V Output, 1kHz, Sine

POWER CONSUMPTION IDLE

1/8TH POWER

1/3RD POWER FULL POWER

|

14W

85W

153W

446W

|

230V AC, 50Hz, 100V Output, 1kHz, Sine

EFFICIENCY 1/8TH POWER

1/3RD POWER FULL POWER

|

56%

76%

74%

|

230V AC, 50Hz, 100V Output, 1kHz, Sine

THERMAL DISSIPATION IDLE

1/8TH POWER

1/3RD POWER FULL POWER

|

46

250

415

1202

|

Excludes Load Power (1W = 3.412BTU/Hr)

MISCELLANEOUS
PRODUCT DIMENSIONS (WITH RACK EARS) PRODUCT DIMENSIONS (WITHOUT RACK EARS)| 483mm x 353mm x 88mm (19.0″ W x 13.9″ D x 3.5″ H)

437mm x 353mm x 88mm (17.20″ W x 13.9″ D x 3.5″ H)

ENGINEERED BY AUSTRALIAN MONITOR
Address: Unit 1, 2 Daydream Street, Warriewood NSW 2102 Australia Website: www.australianmonitor.com.au
International enquiries email: international@australianmonitor.com.au ABN 86 003 231 187