EMIX EMPA-250 User manual

1
EMI
EMPA-250
EMPA-380
EMPA-500
Power Amplifier
Before operating, please read this manual completely
FEATURES:
Transformer isolated 100V, 70V and 4 Ohms speaker outputs, balanced,
no grounding.
5 LED indicators for status display
XLR socket and 6.3 mm jack for amplifier link
Short circuit output protection & LED display
Series amplifiers of high output power available.
U S ER M ANU AL
Professional Public Address System
Professional Public Address SystemProfessional Public Address System
Professional Public Address System

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FRONT PANEL:
::
:
1. AC Power Switch
2. CLIP LED Indicator (Please reduce
the gain to prevent severely clipped
waveforms reaching the loudspeakers)
3. SOUND LED Indicator (Output level)
4. PROTECTION LED Indicator (DC fault
or short circuit output protection
Indication)
5. TEMPERATURE LED Indicator (high
temperature indication, >90 ) ℃
6. Unit’s Fan Intake Window
REAR PANEL:
Notice: Input 3 and 13 are prior to other inputs.
1. Fan Exhaust Window 10
． 24V DC fuse （ Parallel Connection ）
2 ． 100V Signal Input 11 ． 240V AC fuse
3 ． XLR Input Socket 12 ． 100V Signal Volume control
4 ． XLR Input Socket 13
． 6.3mm input socket(with priority)
5 ． XLR link Output Socket 14 ． 6.3mm input socket
6. COM output terminal 15
． Output volume control
7 ． 4 ～ 16Ωoutput terminal 16 ． 6.3mm Link output socket
8 ． 70V output terminal 17 ． 24V DC Input Terminal
9. 100V output terminal 18
． 240V AC Power cord
1 2 3 4 5 6
1 2 3 4 5 6 7 8 9 10 11
1
2
1
3
1
4
15 16
1
7
1
8

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OPERATION:
Make certain that speakers and input sources are properly connected before switching on.
Keep volume level turned down to minimum before switching on.
Protection LED Indicator lights on while operation when faults happen. Switch off the
apparatus immediately and correct the faults before switching on.
INPUT CONNECTION:
The Input sockets/terminals are on the
rear panel under the label “IN”. There are
three input ways: 100v input terminal, two
XLR input sockets (figure 1), and two
6.3mm RCA input sockets.
OUTPUT CONNECTION:
Speaker output terminals are on the rear panel. The terminal under the label “COM” is
COMMON. The terminals under the labels “4Ω, 70V, 100V” are Hot. The connection ways
should be COM-4Ω/ COM-70V / COM-100V.
Normally the “rated power” (70V / 100V) output terminal is used in output connection. The
connected speaker should be with a transformer, and the gross power of speakers should be
less than the rated power of the amplifier.
“Rated Impedance”(4 ～ 16Ω) output terminal can be used when speakers are fixed closely,
and the gross impedance of speakers should be 4 ～ 16Ω.
XLR terminal or 6.3mm RCA terminal under the label “OUT” is line output terminal.
NOTE ：
：：
：
Only choose one pair of terminals for speaker connection.
Never connect two Hot terminals (labeled 4Ω, 70V, 100V) together.
Positive Input
2 1
3
Ground
Negative Input
Figure 1 3-pin XLR Input Sockets

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SPECIFICATIONS
Model
EMPA250 EMPA380 EMPA500
Rated Power 250W RMS 380W RMS 500W RMS
Input sensitivity
1V
S/N Ratio
>85dB
Frequency Response
80Hz ～ 16kHz / ±3dB
THD 4Ω
ΩΩ
Ω/1kHz
<0.5 %
Cooling Style
12V DC Fan
Indicators
Power: Red, Clip: Red”, Sound: Green, Protection: Red,
Temperature: Orange
Protection
Turn on delay, thermal, DC fault, short circuit
240V AC Fuse
F6AL F8AL F10AL
24V DC Fuse
FB15AL/FC10AL FB/FC: 15AL FB/FC: 20AL
Power Supply
AC220 ～ 240V / 50 ～ 60Hz 24V DC
Power Consumption
500W 760W 1000W
Dimension
88×483×390mm
Gross Weight
17kg 19.3kg 20.6kg
Net Weight
16kg 18.3kg 19.5kg
Specifications are subject to change without notice.
CAUTION
● For safety, when “Power switch” is off, please detach the power plug from the
receptacle.
● The apparatus shall not be exposed to dripping or plashing and no objects filled
with liquids, such as vases, shall be placed on the apparatus.
● To reduce the risk of electric shock, do not remove the cover.
●
●●
● No user serviceable parts inside. Refer servicing to qualified service personnel.