LY EA-8412 User manual
Table of Contents
Introductions ----------------------------------------- 2
Features -----------------------------------------------3
Front panel controls ------------------------------- 4
Rear panel controls ---------------------------------6
Block diagram ----------------------------------------8
Specifications ----------------------------------------9
Table of Contents
1
Welcome
Congratulation and thank you for the purchasing EA-8148、EA-8224、EA-8412 constant
voltage mixer amplier.
Unpacking and Installation
Introductions
2
Introductions
Although it is neither complicated to install nor difcult to operate unit, a few minutes of your
time is required to read this manual for a properly wired installation and becoming familiar
with its many features and how to use them. Please take a great care in unpacking your set
and do not discard the carton and other packing materials. They may be needed when moving
your set and are required if it ever becomes necessary to return your set for service. Never
place the unit near radiators, in front of heating vents, excessive humid or dusty location to
avoid early damage and for your years of quality use.
Connect your unit with the system components according to the description on the following
pages.
No naked ame sources, such as lighted candles, should be placed on the apparatus;The use
of apparatus in moderate climates.
- Front : 4 Mic/Line Input Level(CH1-4) with 3-band EQ and output zone selector switches.
Features
4 Line Input Level (CH5-8) with output zone selector switches.
3
Features
•Controls
Output Level control with 2 Tone control and Mute switch.
Monitor Level control with output zone selector switches.
- Rear : 8 Gain control for each input.
Talkover switch for Ch1.
Phantom Power switches for CH1 and CH2-4.
•Connectors
- 4 XLR Electronically Balanced jack and 1/4” phone jack for CH1-4 input.
- 4 1/4” phone jack and RCA jack for CH5-8 input.
- RJ45 jack for Remote music source input and remote mic input.
- Euro Block for output.
- Power, SIG, CLIP for each input channel and SIG,-10dB,0dB, CLIP,PROT,for each output channel.
•Indicators:
FRONT PANEL
Front Panel Controls
1.INPUT CHANNEL EQ CONTROLS
2.SIGNAL INDICATORS
3.PEAK INDICATORS
4.INPUT CHANNEL VOLUME
5.OUTPUT CHANNEL SELECTORS
6.OUTPUT CHANNEL EQ CONTROLS
7.OUTPUT LEVEL METER
8.CLIP INDICATORS
Front Panel Controls
4
These controls allow to equaliza the input signal from -12dB to +12dB at 80Hz(LOW),2.5kHz(MID)
and 12.5kHz(HIGH) for CH1~CH4.
These indicators show current input signal on the each input channels.
These indicators warn against overload shortly on the each input channels. We would like to
recommend for users to adjust TRIM control on the rear panel when PEAK indicators are ickering
to make best performance.
These allow to adjust for each input level.
These selectors allow to route each input signal through out to selected output channels.
Output channels have two band equalizer which is adjustable over a wide range as follow.
HIGH : ±15dB at 12KHz / LOW : ±15dB at 80Hz
These indicators show current output level.
These indicators warn against overload shortly on the each output chan-nels. We would like to
recommend for users to adjust VOLUME control when CLIP indicators are ickering to make best
performance.
10 11
12
13
14
15
16
17
1
5
Front Panel Controls
9.PROTECT INDICATORS
10.MUTE SWITCH
11.OUTPUT VOLUME
12.POWER INDICATOR
These indicators show to be protected ampliers due to over current or over heat.
These buttons allow to mute for each output channels.
These faders allow to adjust the level for each output channels.
This indicator lights when power switch is turned on.
13.POWER SWITCH
This button is power on/off switch.
14.MONITOR SWITCH
These switches allow you to monitor each output channel through monitor speaker.
15.MONITOR OUTPUT CONTROL
This control allow to adjust the monitor level of monitor speaker.
16.MONITOR SPEAKER
17.PFC/ATL SELECTOR
This control allow you to select monitor before or after master volume.
Rear Panel Controls
6
Rear Panel Controls
1.AC POWER INPUT CONNECTOR
2.REMOTE INPUT
Acorrect capacity of fuse and power cable should be applied. Please make sure the value of fuse
before replacing.
These RJ45 jacks allow to connect with VP-1(wall control panel) for ad-justing volume and inserting
music source of remote area.
110 9
7
Rear Panel Controls
3.AMPLIFIER OUTPUTS
4.TRIM CONTROLS
5.SIGNAL INPUTS
6.PRIORITY SWITCH
7.PHANTOM POWER SWITCH
These amplier output blocks provide 100V constant voltage output for commercial and industrial use.
These controls allow to accept variable input level. They have 44dB adjustable range as -50dB to -6dB
for microphone input channels and -30dB to +14dB for line input channels.
This amplier provide several connectors for signal input and these con-nectors allow easy connection.
The channel 1~4 are balanced line and microphone input and channel 5~8 are mono line input.
All other input signals are muted by the input signal of channel 1 auto-matically when this switch
pressed on.
The phantom power can be provided to each microphone input for using condenser microphone.
8.REMOTE MIC INPUT
This RJ 45 Jack allow to connect EM-4(desktop remote microphone) for individual zone annauncement.
9.LINE OUTPUT
These line output blocks provide 1V balanced output for connecting external amplier.
10.MUTE
Muting all output by external closure.
8
Block Diagram
Block Diagram
This manual suits for next models
2
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