User manual | Owner`s Manual - Etabeta Electronics

Owner’s Manual
SY-A4120
MULTI-ZONE POWER AMPLIFIER
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WARNING
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Table of Contents
SY-A4120
Table of Contents
Introduction ………………………………………………………… 2
Features ……………………………………………………………… 3
Front Panel Controls ………………………………………………… 4
Rear Panel Controls ………………………………………………… 5
Connections ............................................................................... 6
System Set Up ..……………………………………………………… 7
Output Wiring Guide .................................................................. 8
Specifications ....……………………………………………..……… 9
Block Diagram ……………………………………………………… 10
1
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Introduction
SY-A4120
Introduction
SY-A4120
MULTI-ZONE POWER AMPLIFIER
Welcome
Thank you for purchasing the SY-A4120 constant voltage power amplifiers from HPA
Technologies! The SY-A4120 have been designed to provide robust, clean output with
low distortion and wide dynamic range, along with the dependability demanded by the
most professional design engineers and audio installers. The SY-A4120 is enclosed
in a convenient 2 rack-space chassis and feature highly efficient Class D power cores
with universal power supplies that operate from 100 – 240 volts, at 50 or 60 Hz. Each
of the channels reach full power of 120 watts at 4 ohms, but they can also run at 70 or
100 volts thanks to their internal, high performance, toroidal matching transformers.
Front panel controls and displays include a Power switch with LED indicator, as well
as independent channel input level controls. The amplifiers include front panel Signal,
Peak and Protection LED indicators to help you set the correct operating levels. Euro
block input and output connectors are provided to insure easy connections and maximum flexibility. To keep the amplifiers running cool, their designs employ internal wind
tunnels with forced-air cooling via an internal fan, which greatly reduces the chance of
thermal and overheating problems. Multi-stage protection for power-up, over-heating,
over-current, short circuit, low output impedance and DC voltage, assures high reliability under the most demanding situations. 19-inch rack mount design and convenient
carry handles facilitating easy installation in any rack. Optimized for commercial installations, houses of worship, live sound venues and for driving small and medium-sized
live PA systems, the SY-A4120 will deliver reliable power. The Its’ advanced technology,
clear sound and reliable performance makes them ideal for any small PA or any distributed sound system installation.
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SY-A4120
Features
Features
The HPA SY-A4120 power amplifiers have been developed using the latest technology
in Class D power amplifier design. Here are some of their main features:
• The amplifier delivers 120 watts of clean power per channel at 70/100 volts and 4 Ohms,
with 4 x 120 watts.
• Class D amplifier operating at 85% efficiency using universal power supplies with power
factor correction and capable of operating from 100-240 V, 50 or 60 Hz. The SY-A4120
amplifiers generate virtually no heat and thanks to their low current draw.
• Built-in 70/100 volt output transformers with flat frequency response from 40Hz to 20kHz
provide constant voltage for distributed speaker systems.
• Independent input level controls for each channel allow precision adjustments and the
included security panel provides protection from unwanted adjustment.
• Clean, crisp sound - Impressive audio specifications such as 0.04% THD, dynamic range
of 105 dB, crosstalk of 80 dB, and frequency response of 10 Hz to 25 kHz guarantee ultraclean sound quality.
• LED signal indicators for each channel continuously display power output levels and allow
you to correct for overloading (clipping) conditions.
• Forced air cooling via internal fan provides reliable performance without thermal and
overheating problems.
• Protection circuitry (with dedicated LEDs for each channel) that guards against
overheating or faulty wiring conditions and also prevents “thumps” when powering on or
off. This means that you can use the SY-A4120 with a single power strip, into which a mixer
or other audio devices are connected, without danger of damage to connected speakers.
• Input connections for each channel are made using Euroblock connectors to
accommodate both balanced and unbalanced signals sources.
• Output connections for each channel are made using Euroblock connectors which accept
12 gauge wire.
• The SY-A4120 can be mounted in any standard 19” rack (taking just two rack spaces),
making it easy to integrate into any fixed or traveling PA rig.
• The amplifiers are enclosed in ruggedly construction (an all-steel chassis with a sleek black
finish), standard 2-space 19-inch rack mount unit.
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Front Panel Controls
SY-A4120
Front Panel Controls
1
2
1. Handle - For easy transport while carrying,
or while rack mounting, the amplifier features
two heavy duty die cast handles located
conveniently on the left and right side of the
front panel.
2. Fan Vent - The amplifiers stay cool thanks
to their twin, forced-air cooling vents. Cool
air is drawn through the front panel fan filters,
reducing the temperature of the internal
components while forcing the heat out the
rear vents.
3
4
5
6
output level for the corresponding channel.
The SIGNAL LED lights whenever output
signal is present.
6. Power switch - Use this to power the
Amplifier on or off. The internal LED lights
whenever the Amplifier is powered on.
3. Clip LED - The CLIP segment lights
whenever the channel is outputting signal
at full strength. For the best signal-to-noise
ratio, the right (PEAK) segment should light
occasionally during peak levels; if it lights
frequently, you may be overloading the
SY-A4120 and a distorted (“clipped”) signal is
probably being output.
4. Protection LED - This goes on for
approximately one second, whenever the
SY-A4120 is powered on and then turns off
. The Protection LED will also light when
overheating or other severe problems occur.
It is normal for the Protection LED to fade
slowly when the amp is powered off. When
lit, no signal is provided to any connected
speakers, thus muting them and preventing
any “thump” from occurring.
5. Signal LED - The front panel LED
indicators continuously monitor the power
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Rear Panel Controls
SY-A4120
Rear Panel Controls
5
6
SPEAKER OUTPUT
100 V 70 V 22 V
(83 ) (41 ) (4 )
CH 4
100 V 70 V 22 V
(83 ) (41 ) (4 )
COM
~ AC INPUT
100~240V 50/60Hz, 118W
CH 1
COM
CH 2
CH 3
WARNING
DO NOT EXPOSE
THIS EQUIPMENT
TO RAIN OR
MOISTURE
CAUTION
FOR CONTINUED
PROTECTION AGAINST
RISK OF FIRE, REPLACE
ONLY SAME TYPE FUSE
AVIS
RISQUE DE CHOC
ELECTRONIQUE NE
PAS OUVRIR
ATTENTION
UTILISER UN FUSIBLE
DE RECHANGE MEME
TYPE
SY-A4120
100 V 70 V 22 V
(83 ) (41 ) (4 )
COM
100 V 70 V 22 V
(83 ) (41 ) (4 )
COM
PUBLIC ADDRESS POWER AMPLIFIER
HPF
400Hz
OFF
ON
ADJUST
-12 dB 0
3
HPF
400Hz
OFF
LINK
CH 4
INPUT
ADJUST
ON
-12 dB 0
HPF
400Hz
OFF
LINK
CH 3
INPUT
ON
ADJUST
-12 dB 0
HPF
400Hz
OFF
ADJUST
ON
LINK
CH 2
INPUT
1
-12 dB 0
LINK
CH 1
INPUT
DESIGNED AND ENGINEERED IN KOREA
4
1. Fan - This internal fan provides vital cooling to
your SY-A4120. Make sure that both the front and
rear panels are kept free of all obstructions and
that cool, fresh air is accessible at all times. Also,
try to ensure that the Amplifier is used in a dustfree environment.
2. Input connectors - Connect incoming signals
to these electronically balanced connectors. We
recommend the use of balanced three-conductor
cabling wherever possible (unbalanced twoconductor signals can also be inserted into these
inputs, but you’ll get better signal quality and less
outside noise and hum if you use balanced lines).
The SZ Series accepts input levels of any strength
but needs at least 0 dBu to achieve maximum
power.
2
at the input jacks and the Channel input
level controls are set to their fully clockwise
position, the Amplifier delivers full power
output.
7. High Pass filter - It can be allowed toggle on
and off the HPF.
WARNING!: Each of the amplifier channels can
run only one output configuration at the same
time. Operating amplifiers using 4 ohm and 70 or
100 volt concurrently may cause damage to the
amplifier or connected speakers, and may void
your warranty.
3. Link Output Connectors - Connect out going
signals from these jacks.
4. AC input - Connect the supplied heavy-gauge
3-pin “IEC” power cable here.
5. Euroblock Output connectors - Use these
to connect each channel of the SY-A4120 to
4-ohm or 8-ohm loudspeakers, or to one of the 70
and 100 volt outputs if you are using a constant
voltage system .
6. Channel input level controls - These
controls allow you to precisely adjust the
input level of the signal arriving at the
rear-panel input connectors. At their fully
counterclockwise position, the signal is
attenuated by -12 dB. At their fully clockwise
position, the signal is at unity gain (that is,
no attenuation). When 0dBu of signal arrives
5
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SY-A4120
Connections
Connections
The following diagrams illustrate various wiring set ups for 4 ohm, 8 ohm and 70 Volt operation.
CH 3
WARNING
DO NOT EXPOSE
THIS EQUIPMENT
TO RAIN OR
MOISTURE
CAUTION
FOR CONTINUED
PROTECTION AGAINST
RISK OF FIRE, REPLACE
ONLY SAME TYPE FUSE
AVIS
RISQUE DE CHOC
ELECTRONIQUE NE
PAS OUVRIR
ATTENTION
UTILISER UN FUSIBLE
DE RECHANGE MEME
TYPE
HPF
400Hz
OFF
ON
ADJUST
-12 dB 0
HPF
400Hz
OFF
LINK
SY-A4120
CH 4
PUBLIC ADDRESS POWER AMPLIFIER
INPUT
ON
ADJUST
-12 dB 0
HPF
400Hz
OFF
ADJUST
ON
CH 3
INPUT
HPF
400Hz
OFF
-12 dB 0
LINK
ON
LINK
CH 2
INPUT
ADJUST
-12 dB 0
SPEAKER OUTPUT
LINK
CH 1
CH 2
~ AC INPUT
100~240V 50/60Hz, 118W
INPUT
100 V 70 V 22 V
(83 ) (41 ) (4 )
CH 1
100 V 70 V 22 V
(83 ) (41 ) (4 )
CH 4
COM
CH 4
100 V 70 V 22 V
(83 ) (41 ) (4 )
COM
CH 1
COM
100 V 70 V 22 V
(83 ) (41 ) (4 )
COM
SPEAKER OUTPUT
CH 2
~ AC INPUT
100~240V 50/60Hz, 118W
CH 3
WARNING
DO NOT EXPOSE
THIS EQUIPMENT
TO RAIN OR
MOISTURE
CAUTION
FOR CONTINUED
PROTECTION AGAINST
RISK OF FIRE, REPLACE
ONLY SAME TYPE FUSE
AVIS
RISQUE DE CHOC
ELECTRONIQUE NE
PAS OUVRIR
ATTENTION
UTILISER UN FUSIBLE
DE RECHANGE MEME
TYPE
SY-A4120
100 V 70 V 22 V
(83 ) (41 ) (4 )
COM
100 V 70 V 22 V
(83 ) (41 ) (4 )
8 Ohm
8 Ohm
HPF
400Hz
OFF
LINK
CH 4
INPUT
ON
ADJUST
-12 dB 0
HPF
400Hz
OFF
LINK
CH 3
INPUT
ON
ADJUST
-12 dB 0
HPF
400Hz
OFF
LINK
CH 2
INPUT
ON
ADJUST
-12 dB 0
LINK
CH 1
INPUT
SPEAKER OUTPUT
CH 4
100 V 70 V 22 V
(83 ) (41 ) (4 )
COM
100 V 70 V 22 V
(83 ) (41 ) (4 )
CH 1
COM
CH 2
CH 3
WARNING
DO NOT EXPOSE
THIS EQUIPMENT
TO RAIN OR
MOISTURE
CAUTION
FOR CONTINUED
PROTECTION AGAINST
RISK OF FIRE, REPLACE
ONLY SAME TYPE FUSE
AVIS
RISQUE DE CHOC
ELECTRONIQUE NE
PAS OUVRIR
ATTENTION
UTILISER UN FUSIBLE
DE RECHANGE MEME
TYPE
SY-A4120
100 V 70 V 22 V
(83 ) (41 ) (4 )
COM
COM
PUBLIC ADDRESS POWER AMPLIFIER
100 V 70 V 22 V
(83 ) (41 ) (4 )
4 Ohm
4 Ohm
4 Ohm
8 Ohm
8 Ohm Operation (One 8 Ohm speaker per amplifer)
~ AC INPUT
100~240V 50/60Hz, 118W
ADJUST
-12 dB 0
DESIGNED AND ENGINEERED IN KOREA
4 Ohm
8 Ohm
ON
DESIGNED AND ENGINEERED IN KOREA
COM
100 V 70 V 22 V
(83 ) (41 ) (4 )
COM
COM
PUBLIC ADDRESS POWER AMPLIFIER
100 V 70 V 22 V
(83 ) (41 ) (4 )
HPF
400Hz
OFF
HPF
400Hz
OFF
ON
8 Ohm Operation (One 8 Ohm speaker per amplifer)
ADJUST
-12 dB 0
HPF
400Hz
OFF
LINK
CH 4
INPUT
ON
ADJUST
-12 dB 0
HPF
400Hz
OFF
LINK
CH 3
INPUT
ON
ADJUST
-12 dB 0
HPF
400Hz
OFF
LINK
CH 2
INPUT
ON
ADJUST
-12 dB 0
LINK
CH 1
INPUT
DESIGNED AND ENGINEERED IN KOREA
70 Volt Operation (Four speakers per amplifer with their line transformers set to 25 watt)
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SY-A4120
System setup
System setup
The following is a typical constant voltage system setup for a small restaurant using the HPA Preamplifier power
amplifier along with an S zone feeding several audio zones with paging and music. The first two channels are connected to four wall-mounted speakers in each of the Dining Rooms with their transformers set to a 25 watt tap. The
third channel powers two speakers in the outside Bar area with their transformers set to 50 watt. The fourth channel
powers small speakers in the lobby with a 12 watt tap.
SPEAKER OUTPUT
100 V 70 V 22 V
(83 ) (41 ) (4 )
CH 4
100 V 70 V 22 V
(83 ) (41 ) (4 )
COM
~ AC INPUT
100~240V 50/60Hz, 118W
CH 1
COM
CH 2
CH 3
WARNING
DO NOT EXPOSE
THIS EQUIPMENT
TO RAIN OR
MOISTURE
CAUTION
FOR CONTINUED
PROTECTION AGAINST
RISK OF FIRE, REPLACE
ONLY SAME TYPE FUSE
AVIS
RISQUE DE CHOC
ELECTRONIQUE NE
PAS OUVRIR
ATTENTION
UTILISER UN FUSIBLE
DE RECHANGE MEME
TYPE
SY-A4120
100 V 70 V 22 V
(83 ) (41 ) (4 )
COM
100 V 70 V 22 V
(83 ) (41 ) (4 )
COM
PUBLIC ADDRESS POWER AMPLIFIER
HPF
400Hz
OFF
ON
ADJUST
-12 dB 0
HPF
400Hz
OFF
LINK
CH 4
INPUT
ON
ADJUST
-12 dB 0
HPF
400Hz
OFF
LINK
CH 3
INPUT
ON
ADJUST
-12 dB 0
HPF
400Hz
OFF
LINK
CH 2
INPUT
ON
ADJUST
-12 dB 0
LINK
CH 1
INPUT
DESIGNED AND ENGINEERED IN KOREA
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Output Wiring Guide
SY-A4120
Output Wiring Guide
There are several ways to interface the amplifers, depending on your exact system set-up. For most
small installation 14 to 16 gauge zip cord can be used for most small to medium size installations. Follow the cable diagrams below for connecting to the input of your amplifier.
4 and 8 Ohm Wiring Guide
100 V
(83 )
70 V
(41 )
25 V
(5.2 )
4 OHM
COM
25 Volt Wiring Guide
100 V
(83 )
70 V
(41 )
25 V
(5.2 )
4 OHM
COM
70 Volt Wiring Guide
100 V
(83 )
70 V
(41 )
25 V
(5.2 )
4 OHM
COM
100 Volt Wiring Guide
100 V
(83 )
70 V
(41 )
25 V
(5.2 )
4 OHM
COM
SHOCK HAZARD SYMBOL
WARNING!!! - PAY ATTENTION TO THE WARNING SYMBOL AND AVOID ELECTRICAL SHOCK.
DO NOT HOLD OR TOUCH THE COMMON AND 70 OR 100 VOLT WIRE CONNECTION WHILE
OPERATING THE AMPLIFIER.
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Specifications
SY-A4120
Specifications
All channels driven
8 ohms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Watts
4 ohms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118 Watts
Current Consumption(115VAC)
@1/8 rated power 4ohms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.6A
@1/3 rated power 4ohms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.6A
@ rated power 4ohms, max.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.0A
Input Sensitivity (Balanced Line Input) . . . . . . . . . . . . . . . . . . . . . . . . 1.0 + 0.2Vrms / 10Kohm
Frequency Response (50Hz~18kHz). . . . . . . . . . . . . . . . . . . . . . . . . . +1.5/-3dB
Dynamic Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >90 dB A-weighted, typical
THD+N (AES17 20kHz brickwall filter, Rated output). . . . . . . . . . . . . Less than 5%
S/N Ratio (AES17 20kHz brickwall filter). . . . . . . . . . . . . . . . . . . . . . . 90dB
Residual Noise (AES17 20kHz brickwall filter) . . . . . . . . . . . . . . . . . . -70dB
Input Clipping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +26dBu
Connectors (each channel)
Input: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . XLR jack
Output:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Euroblock
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AC power switch,Channel volume, HPF
Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power on(blue),Protection(red)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Signal(green) for each Ch.,Cilp(red) for
each Ch.
Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Short circuit,Thermal,Current limit,DC
offset,Current inrush,RF protection, Turn
on/Turn off muting
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuously variable speed, fan forced air
Transformer Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118 Watts
Input voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28.28 Vrms 100 watts / 8_load
Output Tap 1: Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70.7 Vrms 50_ load
Output Tap 2: Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 Vrms 100_ load
Output Tap 3: Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Vrms 4_ load
Power Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100/115/220/230/240 VAC, 50/60 Hz
Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . All Steel
Dimensions(WXHXD). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 482mm X 88mm X 432.8mm
Net Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17.8kg
Necessary modifications are carried out without notice.
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Block Diagram
SY-A4120
Block Diagram
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SY-A4120
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SY-A4120
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SY-A4120
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