HPA SY-P804 User manual

Owner’s Manual
SY-P804
Audio Pre Amplifier
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+15-15+15
-15+15
-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
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 3MASTER 2MASTER 1
-20
CLIP
0
-10
-20
SIG
CLIP
0
-10
-20
SIG
CLIP
0
-10
-20
SIG
CLIP
0
-10
SIG
PRE AMPLIFIER
SY-P804

WARNING

SY-P804
1
Table of contents
Introduction …..........……………………………………….2
Features ..............……………………………………………3
Front panel controls......…………………………………..4
Rear panel controls..….……………………………………6
Blockdiagram…...........……………………………………8
Specifications ……….....…………………………………...9

SY-P804
2
Introduction
Introduction
Welcome
Congratulation and thank you for purchasing SY-P series audio pre ampli-
fier.
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+15-15+15
-15+15
-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
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 3MASTER 2MASTER 1
-20
CLIP
0
-10
-20
SIG
CLIP
0
-10
-20
SIG
CLIP
0
-10
-20
SIG
CLIP
0
-10
SIG
PRE AMPLIFIER
SY-P804
SY-P804

SY-P804
3
Features
Features
• Controls
– Front : 4 Mic/Line Input Level control (CH1-4) with 3-band EQ and selec-
tor switches.
4 Line Input Level control (CH5-8) with selector switches.
4 Output Level control with 2-band 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 LINE output.
• Indicators: Power. SIG, PEAK for each input channel and SIG,-20dB,
-10dB,0dB, CLIP for each output channel.

SY-P804
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
-20
CLIP
0
-10
-20
SIG
CLIP
0
-10
-20
SIG
CLIP
0
-10
-20
SIG
CLIP
0
-10
SIG
PRE AMPLIFIER
SY-P804
-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
4 5 6 9 10 13
14 15
11
12
1. INPUT CHANNEL EQ CONTROLS
These controls allow to equalize 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-P804
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. MUTE SWITCH
These buttons allow to mute for each output channels.
10. OUTPUT FADER
These faders allow to adjust the level for each output channels.
11. POWER INDICATOR
This indicator lights when power switch is turned on.
12. POWER SWITCH
This button is power on/off switch.
13. MONITOR SWITCH
These switches allow you to monitor each output channel through monitor
speaker.
14. MONITOR OUTPUT CONTROL
This control allow to adjust the monitor level of monitor speaker.
15. MONITOR SPEAKER
Front Panel Controls

SY-P804
6
Rear Panel Controls
Rear Panel Controls
DC 24V
IN
LINK
OUT
MIC
LINE
PHANTOM
MIC
LINE
MIC
LINE
MIC
LINE
CHANNEL 1CHANNEL 2CHANNEL 3CHANNEL 4
LINE
CHANNEL 5
LINELINELINE
LINE LINE LINE LINE
CHANNEL 6CHANNEL 7CHANNEL 8
REMOTE INPUT
PRIORITY
TRIM
-6/+14 -50/-30
TRIM
-6/+14 -50/-30
TRIM
-6/+14 -50/-30
TRIM
-6/+14 -50/-30
TRIM
+14 -30
+14-30
TRIM
+14-30
TRIM
+14-30
LINE 1-4
LINE 5-8
TRIM
OUTPUT
CHANNEL 4
REMOTE INPUT
CHANNEL 3
REMOTE INPUT
CHANNEL 2
REMOTE INPUT
CHANNEL 1
LINE LINE LINE LINE
GND GND GND GND
COM
ALL
CH1
CH2
CH3
CH4
PHANTOM 2-4
L
R
L
R
L
R
L
R
DESIGNED AND ENGINEERED IN KOREA
MADE IN CHINA
EXT. MUTE
1 8
29
3
464
7
5
ON OFF
RJ45 RJ45 RJ45 RJ45
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-P804
7
Rear Panel Controls
3. LINE OUTPUTS
These LINE output blocks can be connected to the input of a power am-
plifier.
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.
8.EXT.MUTE
Mutes input signals fed to CH1~CH4 employing muting function by short-
circuiting at these terminals.
9.DC 24V INPUT & LINK TERMINAL
If connected to DC 24V.These terminals are provided for the connection
of 24V DC power source.24V DC battery source can be connected to
these terminal.The device will supply power to other device by the link
output terminal.

SY-P804
8
Block Diagram
Block Diagram

SY-P804
9
Specifications
Specifications
SY-P804
Rated Output Level / Impedance 0dB / 600 ΩBalanced
Input sensitivity
/ Impedance
Mic Input - 60dB~ - 16dB / 20KΩBalanced
Line Input -20dB~ + 4dB / 20KΩBalanced
Remote Input 0dB / 600Ωbalanced
Output level / Impedance 0dB / 600 ΩBalanced
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 : 10 kHz ± 15 dB / Low : 100 Hz ± 15 dB
Hum & Noise EIN > 127 dB
Residual > 90 dB
Power Source AC 100~240 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.