HPA SY-A8412H User manual

Owner’s Manual
SY-A8412H
SY-A8224H
SY-A8148H
Public Address Multi-Channel Mixer Amplier
PEAK
SIG
PEAK
SIG
PEAK
SIG
PEAK
SIG
PEAK
SIG
PEAK
SIG
PEAK
SIG
PEAK
SIG
0 0 0 0 0 0 000
MUTE
0+10
LEVEL
POWER
ON
OFF
-15+15
-15+15
-15+15
HIGH
-15+15
LOW
-15+15
MID
HIGH
LOW
MID
HIGH
LOW
MID
HIGH
LOW
MID
-15+15
-15+15
-15+15
-15+15
-15+15
-15+15
-15+15
HIGH
-15+15
LOW
-15+15
CH 1 CH 2 CH 3 CH 4 CH 5 CH 6 CH 7 CH 8 MASTER
PROT
CLIP
0
-10
SIG
1CH MIXING AMPLIFIER
SY-A8148H
PEAK
SIG
PEAK
SIG
PEAK
SIG
PEAK
SIG
PEAK
SIG
PEAK
SIG
PEAK
SIG
PEAK
SIG
0 0 0 0 0 0 0 0 0 000
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4MUTE MUTE MUTE MUTE
0+10
LEVEL
CH 1
CH 2
CH 3
CH 4
POWER
ON
OFF
HIGH
-15+15
LOW
-15+15
HIGH
-15+15
LOW
-15+15
HIGH
-15+15
LOW
-15+15
HIGH
-15+15
LOW
-15+15
CH 1 CH 2 CH 3 CH 4 CH 5 CH 6 CH 7 CH 8 MASTER 4MASTER 3
MASTER 2
MASTER 1
-10
PROT
CLIP
0
-10
SIG
PROT
CLIP
0
-10
SIG
PROT
CLIP
0
-10
SIG
PROT
CLIP
0
SIG
4CH MIXING AMPLIFIER
SY-A8412H
-15+15
HIGH
-15+15
HIGH
-15+15
HIGH
-15+15
HIGH
-15+15
-15+15
MID MID MID MID
-15+15 -15+15 -15+15
MID MID MID MID
-15+15 -15+15 -15+15
PEAK
SIG
PEAK
SIG
PEAK
SIG
PEAK
SIG
PEAK
SIG
PEAK
SIG
PEAK
SIG
PEAK
SIG
0 0 0 0 0 0 0 000
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2 MUTE MUTE
0+10
LEVEL
CH 1
CH 2
POWER
ON
OFF
-15+15
-15+15
-15+15
HIGH
-15+15
LOW
-15+15
MID
HIGH
LOW
MID
HIGH
LOW
MID
HIGH
LOW
MID
-15+15
-15+15
-15+15
-15+15
-15+15
-15+15
-15+15
HIGH
-15+15
LOW
-15+15
HIGH
-15+15
LOW
-15+15
CH 1 CH 2 CH 3 CH 4 CH 5 CH 6 CH 7 CH 8 MASTER 2MASTER 1
PROT
CLIP
0
-10
SIG
PROT
CLIP
0
-10
SIG
2CH MIXING AMPLIFIER
SY-A8224H

WARNING

SY-A8412H / SY-A8224H / SY-A8148H
1
Table of contents
Introduction .............………………………………………….2
Features.................……………………………………………3
Front panel controls..........…………………………………..4
Rear panel controls .....………………………………………6
Blockdiagram..............………………………………………8
Specications ........…………………………………………...9

SY-A8412H / SY-A8224H / SY-A8148H
2
Introduction
Introduction
Welcome
Congratulation and thank you for purchasing SY-A series multi-channel
constant voltage power amplifier.
Unpacking and Installation
Although it is neither complicated to install nor difficult to operate Pre Am-
plifier, a few minutes of your time is required to read this manual for a prop-
erly 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 descrip-
tion on the following pages.
PEAK
SIG
PEAK
SIG
PEAK
SIG
PEAK
SIG
PEAK
SIG
PEAK
SIG
PEAK
SIG
PEAK
SIG
0 0 0 0 0 0 0 0 0 000
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4MUTE MUTE MUTE MUTE
0+10
LEVEL
CH 1
CH 2
CH 3
CH 4
POWER
ON
OFF
HIGH
-15+15
LOW
-15+15
HIGH
-15+15
LOW
-15+15
HIGH
-15+15
LOW
-15+15
HIGH
-15+15
LOW
-15+15
CH 1 CH 2 CH 3 CH 4 CH 5 CH 6 CH 7 CH 8 MASTER 4MASTER 3
MASTER 2
MASTER 1
-10
PROT
CLIP
0
-10
SIG
PROT
CLIP
0
-10
SIG
PROT
CLIP
0
-10
SIG
PROT
CLIP
0
SIG
4CH MIXING AMPLIFIER
SY-A8412H
-15+15
HIGH
-15+15
HIGH
-15+15
HIGH
-15+15
HIGH
-15+15
-15+15
MID MID MID MID
-15+15 -15+15 -15+15
MID MID MID MID
-15+15 -15+15 -15+15
SY-A8412H / SY-A8224H / SY-A8148H

SY-A8412H / SY-A8224H / SY-A8148H
3
Features
Features
• Controls
– Front : 4 Mic/Line Input Level(CH1-4) with 3-band EQ and selector
switches.
4 Line Input Level (CH5-8) with selector switches.
4 Output Level with 2 Tone control and Mute switch.
Monitor Level with 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 operation.
– Euro Block for 4 output.
• Indicators: Power. SIG, CLIP for each input channel and SIG,-
10dB,0dB, CLIP,PROT for each output channel.

SY-A8412H / SY-A8224H / SY-A8148H
4
Front Panel Controls
Front Panel Controls
PEAK
SIG
PEAK
SIG
PEAK
SIG
PEAK
SIG
PEAK
SIG
PEAK
SIG
PEAK
SIG
PEAK
SIG
0 0 0 0 0 0 0 0 0 000
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4MUTE MUTE MUTE MUTE
0+10
LEVEL
CH 1
CH 2
CH 3
CH 4
POWER
ON
OFF
HIGH
-15+15
LOW
-15+15
HIGH
-15+15
LOW
-15+15
HIGH
-15+15
LOW
-15+15
HIGH
-15+15
LOW
-15+15
CH 1 CH 2 CH 3 CH 4 CH 5 CH 6 CH 7 CH 8
MASTER 4MASTER 3
MASTER 2
MASTER 1
-10
PROT
CLIP
0
-10
SIG
PROT
CLIP
0
-10
SIG
PROT
CLIP
0
-10
SIG
PROT
CLIP
0
SIG
4CH MIXING AMPLIFIER
SY-A8412H
-15+15
HIGH
-15+15
HIGH
-15+15
HIGH
-15+15
HIGH
-15+15
-15+15
MID MID MID MID
-15+15 -15+15 -15+15
MID MID MID MID
-15+15 -15+15 -15+15
1 2 3 7 8 9
4 5 6 10 11 14
15 16
12
13
1. INPUT CHANNEL EQ CONTROLS
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.
2. SIGNAL INDICATORS
These indicators show current input signal on the each input channels.
3. PEAK INDICATORS
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 flickering to make best performance.
4. INPUT CHANNEL FADER
These allow to adjust for each input level.
5. OUTPUT CHANNEL SELECTORS
These selectors allow to route each input signal through out to selected
output channels.
6. OUTPUT CHANNEL EQ CONTROLS
Output channels have two band equalizer which is adjustable over a wide
range as follow.
HIGH : ±15dB at 12KHz / LOW : ±15dB at 80Hz

SY-A8412H / SY-A8224H / SY-A8148H
5
7. OUTPUT LEVEL METER
These indicators show current output level.
8. CLIP INDICATORS
These indicators warn against overload shortly on the each output chan-
nels. We would like to recommend for users to adjust FADER control when
CLIP indicators are flickering to make best performance.
9. PROTECT INDICATORS
These indicators show to be protected amplifiers due to over current or
over heat.
10. MUTE SWITCH
These buttons allow to mute for each output channels.
11. OUTPUT FADER
These faders allow to adjust the level for each output channels.
12. POWER INDICATOR
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
Front Panel Controls

SY-A8412H / SY-A8224H / SY-A8148H
6
Rear Panel Controls
Rear Panel Controls
WARNING
DO NOT EXPOSE THIS EQUIPMENT
TO RAIN OR MOISTURE
AVERTISSEMENT
NE PAS EXPOSER CET APPAREILÀ LA
PLUIE OU À OU À L'HUMIDITÉ
CAUTION
FOR CONTINUED PROTECTION
AGAINST RISK OF FIRE, REPLACE
ONLYSAME TYPE FUSE
ATTENTION
UTILISER UN FUSIBLE DE RECHANGE
MEME TYPE
AVIS
RISQUE DE CHOC ELECTRONIQUE
NE PAS OUVRIR
WARNING
DO NOT EXPOSE THIS EQUIPMENT
TO RAIN OR MOISTURE
AVERTISSEMENT
NE PAS EXPOSER CET APPAREILÀ LA
PLUIE OU À OU À L'HUMIDITÉ
CAUTION
FOR CONTINUED PROTECTION
AGAINST RISK OF FIRE, REPLACE
ONLYSAME TYPE FUSE
ATTENTION
UTILISER UN FUSIBLE DE RECHANGE
MEME TYPE
AVIS
RISQUE DE CHOC ELECTRONIQUE
NE PAS OUVRIR
MIC
LINE
PHANTOM
MIC
LINE
MIC
LINE
MIC
LINE
CHANNEL 1CHANNEL 2CHANNEL 3
CHANNEL 4
CHANNEL 1
LINE
CHANNEL 5
LINELINELINE
LINE LINE
LINELINE
CHANNEL 6CHANNEL 7CHANNEL 8
LINE 1-4LINE 5-8
REMOTE INPUTREMOTE INPUTREMOTE INPUTREMOTE INPUT
ON
OFF
TRIM
PRIORITY-6/+14 -50/-30
TRIM
-6/+14 -50/-30
TRIM
-6/+14 -50/-30
TRIM
-6/+14 -50/-30
TRIM
+14+14+14+14 -30-30-30-30
TRIMTRIMTRIM
OUTPUT
AMP AMP AMP AMP
CHANNEL 2CHANNEL 3CHANNEL 4
MADE IN CHINA
DESIGNED AND ENGINEERED IN KOREA
100V
COM
100V
COM
100V
COM
100V
COM
PHANTOM 2-4
ON
OFF
RJ45RJ45RJ45RJ45
1 3 5
2 4 4
7
6
~AC INPUT
230V 50Hz, 173W
FUSE T4AL/250V
1. AC POWER INPUT CONNECTOR
Acorrect capacity of fuse and power cable should be applied. Please
make sure the value of fuse before replacing.
2. REMOTE INPUT
These RJ45 jacks allow to connect with WP1(wall control panel) for ad-
justing volume and inserting music source of remote area.
LINE
010
5
ACTIVE
MIC
WALL CONTROL
WP1
VOL
ON
P
P
P
P
P
U
S
S
S
S
S
S
H
H

SY-A8412H / SY-A8224H / SY-A8148H
7
Rear Panel Controls
3. AMPLIFIER OUTPUTS
These amplifier output blocks provide 100V constant voltage output for
commercial and industrial use.
4. TRIM CONTROLS
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.
5. SIGNAL INPUTS
This amplifier 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.
6. PRIORITY SWITCH
All other input signals are muted by the input signal of channel 1 auto-
matically when this switch pressed on.
7. PHANTOM POWER SWITCH
The phantom power can be provided to each microphone input for using
condenser microphone.

SY-A8412H / SY-A8224H / SY-A8148H
8
Block Diagram
Block Diagram

SY-A8412H / SY-A8224H / SY-A8148H
9
Specifications
Specications
SY-A8412H SY-A8224H SY-A8148H
Rated Output Power 120W X 4CH 240W X 2CH 480W X 1CH
Output / Impedance 100V (83 Ω) 100V (42 Ω) 100V (21 Ω)
Input sensitivity
/ Impedance
Mic Input - 50dB~ - 6dB / 20KΩBalanced
Line Input -30dB~ + 14dB / 20KΩBalanced
Frequency Response (-1dB) 20Hz - 20kHz
T.H.D < 0.1%
Closstalk > 70 dB
Equalization Input High : 12 kHz ± 15 dB / Mid : 2.5 kHz ± 15 dB /
Low : 80 Hz ± 15 dB
Output High : 12 kHz ± 15 dB / Low : 80 Hz ± 15 dB
S/N Ratio EIN > 127 dB
Residual Noise > 90 dB
Power Source AC 230 Volt, 50~60Hz
Weight (Net) 9 kg
Dimensions (W x H x D) 420 x 88 x 320mm
* Specications and design subject to change without notice for improvements.