4-acoustic Pro Audio SX-27000 User manual

4-acoustic.com
SX-HP Operation Manual REV01 1022
Pro Audio
Germany
4
acoustic
Operation Manual
SX-27000 |SX-29000 |SX-48000

Page 2 of 24 4-acoustic.com
Table of Content
1.) Important Safety Instructions
1.1) Explanations Of Graphical Symbols........................................................................................ Page 3
1.2) Explanations Of Risk................................................................................................................. Page 4
1.3) Important Safety Instructions................................................................................................. Page 4
2.) Declarations
2.1) EC Declaration Of Conformity ................................................................................................. Page 5
2.2) FCC Compliance Notice ............................................................................................................ Page 5
2.3) WEEE Directive........................................................................................................................... Page 5
3.) Welcome
3.) Welcome....................................................................................................................................... Page 6
4.) Unpacking
4.1) Unpacking & Checking for Shipping Damage........................................................................ Page 7
5.) Installation
 5.1)InstallingYourAmplier .......................................................................................................... Page 7
6.) Dimensions
6.1) SX-27000, SX-29000 Dimensions.............................................................................................. Page 8
6.2) SX-48000 Dimensions ............................................................................................................... Page 8
7.) Controls And Indicators
7.1) SX-27000, SX-29000 Front Panel .............................................................................................. Page 9
7.2) SX-27000, SX-29000 Back Panel ............................................................................................... Page 9
7.3) SX-48000 Front Panel................................................................................................................ Page 10
7.4) SX-48000 Back Panel................................................................................................................. Page 10
7.5) SX-27000, SX-29000 DIP Switch Setting................................................................................... Page 11
7.6) SX-48000 DIP Switch Setting .................................................................................................... Page 12
8.) Connecting
8.1) AC Mains Connection................................................................................................................ Page 13
8.2) Audio Input Connection ........................................................................................................... Page 14
8.3) Speaker Connection.................................................................................................................. Page 15
9.) System Setup
9.1) Typically Stereo System Setup ................................................................................................ Page 16
9.2) System Setup With 4-Wire Cable............................................................................................. Page 17
9.3) Subwoofer Setup In Bridge Mode ........................................................................................... Page 18
9.4) Four Channel Sound System.................................................................................................... Page 19
9.5) Two Channel Parallel Mode ..................................................................................................... Page 20
9.6) Stereo System Setup with Subwoofer and Mid/High Cabinets ........................................... Page 21
9.7) Setting System Gain Structure ................................................................................................ Page 22
9.8) Bridge Mode Function .............................................................................................................. Page 23
10.) Copyright
10.) Copyright .................................................................................................................... Page 23
11.) Technical Specication
 11.)TechnicalSpecication............................................................................................................. Page 24

Page 3 of 24
SX-HP Operation Manual REV01 1022
1.1) EXPLANATIONS OF GRAPHICAL SYMBOLS
The triangle with the lightning bolt is used to
alert the user to the risk of electric shock.
Symbol for earth/ground connection.
Symbol indicating that the equipment is for
indoor use only.
Symbol for conformity with Directive
2002/96/EC and Directive 2003/108/EC of the
European Parliament on waste electrical and
electronic equipment (WEEE).
The RoHS Symbol shows that this product is
RoHS compliant.
The CE-mark indicates the compliance with
the low voltage and electromagnetic compa-
tibility.
The triangle with the exclamation point is
used to alert the user to important operating
or maintenance instructions.
When the unit is installed in a cabinet or a
shelf, make sure that it has sucient space
on all sides to allow for proper ventilation.
(50 cm from the front and rear
Ventilation Openings)
To completely disconnect this apparatus from
the AC Mains, disconnect the power supply
cord plug from the AC receptacle.
To reduce the risk of Electric Shock, do not
attempt to open any parts of the unit. No
user serviceable parts inside. Refer servicing
to qualied service personal.
The Mains plug of the power supply cord
must remain readily accessible.
Do not expose this equipment to rain or
moisture, dripping or splashing liquids. Ob-
jects lled with liquids, such as vases, should
not be placed on this apparatus.
Connection to the Mains shall be done only
by an electrotechnical skilled person accor-
ding the national requirements of the coun-
tries where the unit is used.
WARNING
1.) Important Safety Instruction

Page 4 of 24 4-acoustic.com
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings.
Install in accordance with the manufacturer’s
instructions.
8. Do not install near any heat sources such as
radiators, heat registers, stoves, or other
apparatus (including ampliers) that produce heat.
9. Do not defeat the safety purpose of the polarized
or grounding-type plug. A polarized plug has two
blades with one wider than the other. A
grounding-type plug has two blades and a third
grounding prong. The wide blade or the third
prong is provided for your safety. If the provided
plug does not t into your outlet, consult an
electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or
pinched, particularly at plugs, convenience
receptacles, and the point where they exit from
the apparatus.
11. Only use attachments/accessories specied
by the manufacturer.
12. Use only with a cart, stand, tripod, bracket, or table
specied by the manufacturer, or sold with the
apparatus. When a cart is used, use caution when
moving the cart/apparatus combination to avoid
injury from tip-over.
13. Unplug this apparatus during lightning storms or
when unused for long periods of time.
14. Refer all servicing to qualied service personnel.
Servicing is required when the apparatus has been
damaged in any way, such as power-supply cord or
plug is damaged, liquid has been spilled or objects
have fallen into the apparatus, the apparatus has
been exposed to rain or moisture, does not operate
normally, or has been dropped.
15. Use the mains plug to disconnect the apparatus
from the mains.
16. WARNING: To reduce the risk of re or electric
shock, do not expose this apparatus to
rain or moisture.
17. Do not expose this equipment to dripping or
splashing and ensure that no objects lled with
liquids, such as vases, are placed on the equipment.
18. The mains plug of the power supply cord shall
remain readily operable.
19. Do not connect the unit’s output to any other
voltage source such as battery, mains source, or
power supply, regardless of whether the unit is
turned on or o.
20. Do not remove the top (or bottom) cover. Removal
of the cover will expose hazardous voltages. There
are no user serviceable parts inside and removal
may void the warranty.
21. An experienced user shall always supervise this
professional audio equipment, especially if
inexperienced adults or minors are using the
equipment.
22. The US National Dierences clause 16.3 requires
that network cables must be ame rated VW-1.
Before using the device, be sure to carefully read the safety instructions. Keep this document
with the device at all times.
!
CAUTION / VORSICHT
RISK OF ELECTRIC SHOCK!
DO NOT OPEN
STROMSCHLAG-GEFAHR
NICHT ÖFFNEN
CAUTION:
TO REDUCE THE RISK OF
ELECTRIC SHOCK
DO NOT REMOVE COVER (OR BACK)
NO USER SERVICEABLE PARTS INSIDE
VORSICHT:
ÖFFNEN SIE NICHT DAS GEHÄUSE
STROMSCHLAGGEFAHR
REPARATUR NUR DURCH
FACHPERSONAL
1.3) IMPORTANT SAFETY INSTRUCTIONS
1.2) EXPLANATIONS OF RISK

Page 5 of 24
SX-HP Operation Manual REV01 1022
NOTE: This equipment has been tested and found to
comply with the limits for a Class D digital device, pur-
suant to part 15 of the FCC Rules. These limits are desi-
gned to provide reasonable protection against harmful
interference in a residential installation. This equipment
generates, uses, and can radiate radio frequency ener-
gy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to
radio communications. However, there is no guarantee
that interference will not occur in a particular installati-
on. If this equipment does cause harmful interference to
radio or television reception, which can be determined by
turning the equipment o and on, the user is encouraged
to try to correct the interference by one or more of the
following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and
receiver.
• Connect the equipment into an outlet on a circuit
 dierentfromthattowhichthereceiveris
connected.
• Consult the dealer or an experienced radio/TV
technician for help.
2.3) WEEE Directive
If the time arises to throw away your product, please
recycle all the components possible.
This symbol indicates that when the end-user
wishes to discard this product, it must be sent
to separate collection facilities for recovery
and recycling. By separating this product from
other household-type waste, the volume of
waste sent to incinerators or land-lls will be
reduced and natural resources will thus be
conserved.
The Waste Electrical and Electronic Equipment Directive
(WEEE Directive) aims to minimize the impact of electri-
cal and electronic goods on the environment. 4-Acoustic
comply with the Directive 2002/96/EC and 2003/108/EC
of the European Parliament on waste electrical nance
the cost of treatment and recovery of electronic equip-
ment (WEEE) in order to reduce the amount of WEEE that
is being disposed of in land-ll site. All of our products
are marked with the WEEE symbol; this indicates that
this product must NOT be disposed of with other waste.
Instead it is the user’s responsibility to dispose of their
waste electrical and electronic equipment by handing it
over to an approved reprocessor, or by returning it to
4-Acoustic for reprocessing. For more information about
where you can send your waste equipment for recycling,
please contact 4-Acoustic or one of your local distribu-
tors.
2.1) EC Declaration of Conformity
Manufacturer:
4-Acoustic Pro Audio Germany
INLINE Marketing GmbH
Bunsenstrasse 32
59227 Ahlen, Germany
We declare that under our sole responsibility the
the products:
AudioPowerAmplierSX-27000,SX-29000,SX-48000
are in conformity with the provisions of the following EC
Directives, including all amendments, and with national
legislation implementing these directives:
• 2006/95/EC Low Voltage Directive
• 2004/108/EC Electromagnetic Compatibility Directive
• 2002/95/CE RoHs Directive
The following harmonized standards are applied:
EN 55103-1:2009 /A1:2012
EN 55014-1:2006 /A1:2009 /A2:2011
EN 55022:2010 /AC:2011
EN 61000-3-2:2006 /A1:2009 /A2: 2009
EN 61000-3-3:2013
EN 61000-3-11:2000
EN 61000-3-12:2011
EN 55103-2:2009 /IS:2012
EN 61000-4-2:2009
EN 61000-4-3:2006 /A1:2008 /IS1:2009 /A2:2010
EN 61000-4-4:2012
EN 61000-4-5:2006
EN 61000-4-6:2014
EN 61000-4-11:2004
EN 60065:2002 /A1:2006 /A11:2008 /A2:2010 /A12:2011
Ahlen, 10th August 2020
Detlef Risse
2.) Declarations
2.2) FCC Compliance Notice
This device complies with part 15 of the FCC rules. Ope-
ration is subject to the following two conditions: (1) This
device may not cause harmful interference, and (2) this
device must accept any interference received, including
interference that may cause undesired operation.
CAUTION: Changes or modications not expressly
approved by the party responsible for compliance could
void the user’s authority to operate the equipment.

Page 6 of 24 4-acoustic.com
Welcome at 4-Acoustic
ThankyouforselectingourSX-Seriesamplierforyoursoundsystemdemand.
Wearecondentthatyouwillbesatisedwiththeprofessionalfeatures,excellentperfor-
manceandreliabledurabilityoeredbythisseries.
4-AcousticSX-SeriesamplierscanbeusedinanunlimitedrangeofPAapplicationssuchas
touring, clubs, opera houses, theaters, churches, cinema, and theme parks.
Forsafeinstallationanduseofthisamplierpleasestudythisoperationmanualthoroughly
tobecomeacquaintedwiththebasiccongurationandcontroloptionsavailable.
ItprovidesabriefintroductiontothefeaturesandfunctionalityoftheSX-Seriesamplier,
and it also contains the information required to safely install the product and place it in ser-
vice.
It is recommended that you also review all other product documentation to ensure familiari-
tywiththevariouscongurationandcontroloptions.
Thankyouagainforyourcondencein4-Acousticproducts.
3.) Welcome
Detlef Risse

Page 7 of 24
SX-HP Operation Manual REV01 1022
First carefully inspect the shipping package before
opening it.
If you nd any damage notify the shipping company
immediately.
If there is no damage at the packing open it and imme-
diately inspect your new amplier.
Your 4-Acoustic amplier has been completely tested
and inspected before leaving the factory.
The box contains the following:
• SX-Series amplier
• AC mains power cord with Neutrik Powercon® plug.
• This operation manual
We recommend that you save all packing materials for
use if you ever need to transport the unit. Never ship
the unit without the factory carton and packing mate-
rials.
Disposal of the packing material. The transport and
protective packing have been selected from materials
which are environmentally friendly for disposal and
can normally be recycled. Rather than just throwing
these materials away, please ensure they are oered
for recycling.
4.1) Unpacking & Checking For
Shipping Damage
5.1) Installing Your Amplier
Before you begin, make sure your
amplierisdisconnectedfromthe
power source.
The common installation of the SX-Amplier Series is in 19“
standard rack cabinets. In order to limit the risk of mechani-
cal damages, the ampliers must be xed to the rack using
both frontal and rear mounting brackets. (See Figure 5.1)
Note: Instead of connecting the amplier to the power grid
directly, plug the amplier’s mains connections to a power
distribution panel inside the rack cabinet.
Proper Cooling
When using an equipment rack, mount units directly
on top of each other. Close any open spaces in the
rack with blank panels. (Open spaces will reduce coo-
ling eciency.) DO NOT block front or rear air vents.
The rack should be a minimum of two inches (5.1 cm)
away from the amplier, and the back of the rack
should be a minimum of four inches (10.2 cm) from
the amplier back panel. Air ow is front to back as
illustrated in Figure 5.2.
CAUTION
4.) Unpacking 5.) Installation
Figure 5.1
Figure 5.2

Page 8 of 24 4-acoustic.com
6.1) SX-27000/SX-29000 Dimensions
6.2) SX-48000
6.) Dimensions
478,5014
437
32
44,50
483
CH A CH B
POWER
PROTECT
478,5014
437
32
483
44,50
ON
OFF
CH A CH B CH C CH D
POWER
BRIDGE
POWER
BRIDGE
PROTECT PROTECT

Page 9 of 24
SX-HP Operation Manual REV01 1022
H - AC Power Inlet
32A Neutrik Powercon® inlet for detachable connection.
J - Speaker Output Section
Neutrik Speakon® and Binding Post connector per channel
connect to loudspeakers.
I - Cooling Fan Outlet
Outlet for cooling air ow. Do not block or cover this outlet
K - DIP Switches
DIP switches for Mode and Sensitivity setup.
L - Analog Input Section
Balanced Analog Inputs and Loop-Through Outputs for each
channel. A 3-pin female XLR connector for each channel in-
put and two 3-pin male XLR output connectors are provided
(one per channel). The signal at these connectors is paralle-
led with the input signal for feeding the input signal to other
ampliers.
7.) CONTROLS AND INDICATORS
7.1) SX-27000/SX-29000 Front Panel
OFF
ON
CH A CH B
POWER
PROTECT
E
AF
E GC D B
K
H
JL
I
II
7.2) SX-27000/SX29000 Back Panel
II
A - Level and Signal Indicators
LEDs indicate signal presence and level as follows:
-20dB green = -20dB below rated output
-10dB green = -10dB below rated output
- 7dB green = -7dB below rated output
- 3dB green = -3dB below rated output
- 1dB green = -1dB below rated output
0dB yellow = rated output
+1dB yellow = 1dB over rated output
+2dB yellow = 2dB over rated output
Clip red = clipped signal detected at Input or Output
B - Protect Mode
Indicator (red) Illuminates when the amplier output
channel has stopped operating.
C - Power CH A/B
Indicator (blue) Illuminates when power supply is activated
for channel pair A/B.
D - Bridge Mode CH A/B
Indicator (orange) Illuminates when Bridge Mode is activated
for channel pair A/B or C/D.
E - Cooling Vent Grille
Provides cooling air ow ventilation from front to back. Do
not block or cover these vents.
F - Gain Control
Sets output level of each channel.
G - Power Switch
Power LED´s Illuminate when the amplier is connected to
the mains power supply and switched on.

Page 10 of 24 4-acoustic.com
H - AC Power Inlet
20A Neutrik Powercon® inlet for detachable connection.
I - Output Connectors
Neutrik Speakon® connector per channel connect to
loudspeakers.
J - Cooling Fan Outlet
Outlet for cooling air ow. Do not block or cover this outlet
K - DIP Switches
DIP switches for Mode and Sensitivity setup.
L - Analog Input Section
Balanced Analog Inputs and Loop-Through Outputs for each
channel. A 3-pin female XLR connector for each channel in-
put and 3-pin male XLR output connectors are provided (one
per channel). The signal at these connectors is paralleled
with the input signal for feeding the input
signal to other ampliers.
A - Level and Signal Indicators
LEDs indicate signal presence and level as follows:
-20dB green = -20dB below rated output
-10dB green = -10dB below rated output
- 7dB green = -7dB below rated output
- 3dB green = -3dB below rated output
- 1dB green = -1dB below rated output
0dB yellow = rated output
+1dB yellow = 1dB over rated output
+2dB yellow = 2dB over rated output
Clip red = clipped signal detected at Input or Output
B - Protect Mode
Indicator (red) Illuminates when the amplier output
channel has stopped operating.
C - Power CH A/B and CH C/D
Indicator (blue) Illuminates when power supply is activated
for channel pair 1/2 or 3/4.
D - Bridge Mode CH A/B and CH C/D
Indicator (orange) Illuminates when Bridge Mode is activated
for channel pair A/B or C/D.
E - Cooling Vent Grille
Provides cooling air ow ventilation from front to back. Do
not block or cover these vents.
F - Gain Control
Sets output level of each channel.
G - Power Switch
Power LED´s Illuminate when the amplier is connected to
the mains power supply and switched on.
7.3) SX-48000 Front Panel
ON
OFF
CH A CH B CH C CH D
POWER
BRIDGE
POWER
BRIDGE
PROTECT PROTECT
E
AF
EG
I
H
KL
JJJ
7.4) SX-48000 Back Panel
7.) CONTROLS AND INDICATORS
CD BCD
B
L

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SX-HP Operation Manual REV01 1022
7.5) SX-27000/SX29000 DIP Switch Settings
SETTINGS
SENSITIVITY MONO/BRIDGE
3
2
1
ON ON
2
1
ON ON
2
1
ON ON
2
1
ON ON
0,775V 1,0V 1,4V 2,0V
CLIP
4
ON
ON
41dB 38dB 35dB 32dB
1
ON
The two-channel model SX-27000 and SX-29000 has control options for the Input sensitivity and the signal input
mode of the XLR input sockets CHA and CHB.
Sensitivity Switches: Selectbetweenfourdierentinputsensitivitylevelwiththetwodip
switches 1 and 2. (0,775V/1,0V/1,5V/2V)
Figure 7.1 shows how to select the right setting.
The right setting and a correct system gain structure is very important to reach maximum signal headroom, less
noise and avoid clipping at any position of your sound structure. Please refer to 9.7 Setting System Gain Structure.
Input Mode: SelectbetweenStereoorModeBridgeModeasshowningure7.1.
If the dip switch 3 are set to Mono Bridge Mode the signal of the input socket CHA will be internal linked to the
Input signal for CHB.
Clip: SelectiftheinternalClipprotectionlimitershouldbeonoroassowningure7.1.
If the dip switch 4 is set to Clip the internal clip protection limiter is on.
7.) CONTROLS AND INDICATORS
Figure 7.1
Switch the two amplier channels A/B to Mono Bridge Mode. The input
signal of CHA will be linked internal to CHB.
If use the output sockets A and A+B with 1+/1- connection the two rela-
ted output channels will have the same signal of input CHA. If use output
socket A+B with 1+/2- connection the amplier will work in mono bridge
mode. Output socket A can not be used if you want to drive the two amp
channels in bridge mode!
Select the input sensitivity (Volatage Gain)
Switch on/o the internal clip protection limiter.

Page 12 of 24 4-acoustic.com
SETTINGS
SENSITIVITY MONO/BRIDGE
3
2
1
ON ON
2
1
ON ON
2
1
ON ON
2
1
ON ON
0,775V 1,0V 1,4V 2,0V
CLIP
4
ON
ON
41dB 38dB 35dB 32dB
7.6) SX-48000 DIP Switch Settings
The four channel model SX-48000 has control options for the Input sensitivity, bridge function and the signal input
mode of the XLR input sockets.
Sensitivity Switches: Selctbetweenfourdierentinputsensitivitylevelwiththetwodipswitches1and2.
0,775V/1,0V/1,5V/2V
Figure 7.2 shows how to select the right setting.
The right setting and a correct system gain structure is very important to reach maximum signal headroom, less
noise and avoid clipping at any position of your sound structure. Please refer to 9.7 Setting System Gain Structure.
Input Mode: SelectbetweenStereoorModeBridgeModeasshowningure7.1.
If the dip switch 3 are set to Mono Bridge Mode the signal of the input socket CHA (CHC) will be internal linked to
the Input signal for CHB (CHD).
Clip: SelectiftheinternalClipprotectionlimitershouldbeonoroassowningure7.1.
If the dip switch 4 is set to Clip the internal clip protection limiter is on.
7.) CONTROLS AND INDICATORS
Figure 7.2
Switch the amplier channels A/B or (and) C/D to Mono Bridge Mode. The
input signal of CHA (CHC) will be linked internal to CHB (CHD).
If use the output sockets A (C) and A+B (C+D) with 1+/1- connection the two
related output channels will have the same signal of input CHA (CHC). If
use output socket A+B (C+D) with 1+/2- connection the amplier will work
in mono bridge mode. Output socket A (C) can not be used if you want to
drive the two amp channels in bridge mode!
Select the input sensitivity (Volatage Gain)
Switch on/o the internal clip protection limiter.

Page 13 of 24
SX-HP Operation Manual REV01 1022
8.) CONNECTING
8.1) AC Mains Connection
This amplier comes with a power cord using a Neutrik Powercon® plug to connect to the amplier and a power
plug used in your country to connect to the mains. The AC mains voltage and current must be sucient to deliver
the power you need to drive this amplier. Ampliers don’t produce energy so all the power the amplier need to
provide to your speaker comes out of your mains connection.
Before connecting the Powercon® plug check if the amplier is switched o. First connect the Powercon® plug
with the amplier as shown in gure 8.1 before connecting the power cord with the Mains supply. The
Powercon® Connector should be never connect or disconnect if the amplier is switched on or under power.
Always disconnect the power cord from the Mains rst.
The ground connection of the supplied AC power cord connector is a required safety feature. Do not attempt to
disable this ground connection by using an adapter or other methods.
Please check the label on the back panel of your amplier about the correct power supply. Make sure that your
power source meets this requirement before you connect the mains supply. A wrong power supply could cause
damage of your amplier and connected equipment. If you are unsure please consult your electrician.
WARNING
Figure 8.1

Page 14 of 24 4-acoustic.com
8.) CONNECTING
2
1
3
2
1
3
PIN1=GND (Ground)
PIN2=SIG+(HOT)
PIN3=SIG-(Cold)
8.2) Audio Input Connection
The cable quality has a major impact on the sound quality of your entire audio system. Take care to always use high quality
shielded wire cable for input wiring. The higher the density of the shield the better. Spiral wrapped shield should be not used.
- When using unbalanced lines keep the cables as short as possible and no longer than 3 meters.
- High-Level wiring such as loudspeaker wires or AC cords should not run together with audio signal cables. The chance of hum
and noise being induced in the signal cables gets higher as closer this two groups of cable are.
To prevent the risk of overdriving and damage transducers always turn o the entire sound system before start connecting or
change any connections.
Figure 8.2 shows connector pin assignments for balanced analog wiring
Figure 8.3 shows connector pin assignments for unbalanced analog wiring.
Figure 8.4 shows male and female XLR connector pin assignment.
XLR Connector wiring
Unbalanced Analog Input
Connector Wiring
Figure 8.4
Figure 8.3
Pre-build or professionally wired balanced cable (two-conductor plus shield) and connectors are
recommended. (Figure 8.2)
Unbalanced line (Figure 8.3) may also be used but may result in noise over long cable runs.
Balanced Analog Input
Connector Wiring.
Figure 8.2

Page 15 of 24
SX-HP Operation Manual REV01 1022
8.3) Speaker Connection
Recommended are professionally wired, high quality, heavy gauge speaker wire and connectors with two or four conductors.
Figure 8.5 shows the wiring with a 4-pole Speakon® connector.
Select the appropriate size of wire based on the distance from amplier to speaker.
Distance Wire Size:
up to 10 Meter 1,5mm²
up to 30 Meter 2,5mm²
over 30 Meter 4,0mm²
CAUTION: Never use shielded cable for speaker wiring.
SHOCK HAZARD:
Whentheamplieristurnedonandpassingasignalpotentiallylethalvoltagesexistatthe
speaker output connectors. Use Class 2 output wiring.
WARNING
Figure 8.5
8.) CONNECTING

Page 16 of 24 4-acoustic.com
Figure 9.1
9.1) Typically Stereo System Setup
Typical input and output wiring for stereo system setup. Maintain proper polarity (+/–) on output and input connectors. Use
Class 2 output wiring.
IMPORTANT: Turn o the amplier and unplug its power cord.
INPUTS: Connect analog input wiring for both channels.
OUTPUTS: Speakon®outputsgure9.1
To wire stereo speakers to the Speakon® connectors plug the Channel 1 speaker into the Channel 1 Speakon®
connector, and plug the Channel 2 speaker into the Channel 2 Speakon®
DIP SWITCHES: Select the input sensitivity accordingly your audio source or mixer.
Select the Input Mode to Stereo.
Channel A
Channel B
Audio Source
1+
1-
2-
2+
Channel AChannel B
1+
1-
2-
2+
2 Wire Cable
(1+/1-)
2 Wire Cable
(1+/1-)
9.) SYSTEM SETUP

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SX-HP Operation Manual REV01 1022
CH A (MID/HIGH)
CH B (SUB)
Audio Source
(DSM-428)
1+
1-
2-
2+
1+
1-
2-
2+
4 Wire Cable
CH B (SUB)
CH A (MID/HIGH)
2 Wire Cable
(1+/1-)
1+
1-
2-
2+
9.2) System Setup with 4 Wire Cable
Four wire system setups with subwoofer and Mid/High cabinet. Maintain proper polarity (+/–) on output and input connectors.
Use Class 2 output wiring.
IMPORTANT: Turn o the amplier and unplug its power cord.
INPUTS: Connect analog input wiring for both channels.
CHA Mid/High signal
CHB Sub signal
OUTPUTS: Speakon®outputgure9.3
Plug the four-wire cable with Speakon® plugs to the subwoofer input socket and to the CHA output
socket of the amplier.
The wiring is: Mid/High 1+/1-
Sub 2+/2-
The woofer must be connected 2+/2-. A link Speakon® socket in the sub must link the 1+/1- signal
to the mid/high cabinet.
To connect the mid/high cabinet plug a two wire Speakon® cable into the link socket of the subwoofer
and the cabinet you want to connect. To wiring must be 1+/1-.
DIP SWITCHES: Select the input sensitivity accordingly your audio source or mixer.
Figure 9.3
9.) SYSTEM SETUP

Page 18 of 24 4-acoustic.com
CHA (SUBWOOFER 1)
CHC (SUBWOOFER 2)
Audio Source
(DSM-428)
1+
1-
2-
2+
1+
1-
2-
2+
2 Wire Patch Cable
1+/2- at the amplifier
1+/1- (or 2+/2-) at the subwoofer
2 Wire Patch Cable
1+/2- at the amplifier
1+/1- (or 2+/2-) at the subwoofer
Switch to
Bridge Mode
9.3) Subwoofer Setup in Bridge Mode
Subwoofer setup in bridge mode. Maintain proper polarity (+/–) on output and input connectors. Use Class 2 output wiring.
IMPORTANT: Turn o the amplier and unplug its power cord.
The lowest speaker impedance of each output channel in bridge mode is 4 Ohm!
The wiring is 1+/2- at the amplier and 1+/1- (or 2+/2-) at the subwoofer!
INPUTS: Connect analog input wiring for CHA and CHC
CHA Subwoofer 1 signal
CHB Subwoofer 2 signal
OUTPUTS: Speakon®outputgure9.4
Plug the two wire patch cables with Speakon® plugs to the subwoofer input socket and to the amplier
output sockets CHA and CHC.
The wiring is: Amplier socket 1+/2-
Subwoofer socket 1+/1- or 2+/2-
DIP SWITCHES: Select the input sensitivity accordingly your audio source or mixer.
Select the Input Mode CHA-CHB to Bridge
Select the Input Mode CHC-CHD to Bridge
Figure 9.4
9.) SYSTEM SETUP

Page 19 of 24
SX-HP Operation Manual REV01 1022
Channel C
Audio Source
(DSM-428)
Channel D
Channel A
Channel B
1+
1-
2-
2+
Channel AChannel D
1+
1-
2-
2+
1+
1-
2-
2+
Channel B
Channel C
1+
1-
2-
2+
CH D
2 Wire Cable
(1+/1-)
CH A
2 Wire Cable
(1+/1-)
CH C
2 Wire Cable
(1+/1-)
CH B
2 Wire Cable
(1+/1-)
Typically, four channel sound setups for monitoring, multi room usage, or line array cluster. Maintain proper polarity (+/–) on
output and input connectors. Use Class 2 output wiring.
IMPORTANT: Turn o the amplier and unplug its power cord.
INPUTS: Connect analog input wiring for all channels.
OUTPUTS: Speakon®outputsgure9.5
To wire the speakers connect two wire Speakon® cables (1+/1-) from each speaker to the corresponding
output socket of the amplier.
DIP SWITCHES: Select the input sensitivity accordingly your audio source or mixer.
Select the Input Mode to Stereo.
Figure 9.5
9.) SYSTEM SETUP
9.4) Four Channel Sound System SX-48000

Page 20 of 24 4-acoustic.com
Channel C
Audio Source
(DSM-428)
Channel A
1+
1-
2-
2+
Channel AChannel D
1+
1-
2-
2+
1+
1-
2-
2+
Channel B
Channel C
1+
1-
2-
2+
CH D
2 Wire Cable
(1+/1-)
CH A
2 Wire Cable
(1+/1-)
CH C
2 Wire Cable
(1+/1-)
CH B
2 Wire Cable
(1+/1-)
Switch to
Mono Bridge Mode
Figure 9.6
Two Inputs in parallel mode. If you need the same signal on two or more outputs you can set the inputs to parallel mode. That
means the input signal will be internal linked to the next input channel.
Maintain proper polarity (+/–) on output and input connectors. Use Class 2 output wiring.
IMPORTANT: Turn o the amplier and unplug its power cord.
INPUTS: Connectanaloginputwiringforallsignalsyouwanttoconnecttotheamplier.
OUTPUTS: Speakon®outputsgure9.6
To wire the speakers connect two wire Speakon® cables (1+/1-) from each speaker to the corresponding
output socket of the amplier.
DIP SWITCHES: Select the input sensitivity accordingly your audio source or mixer.
Select the Input Channel you want link into parallel mode. In our sample CHA->CHB and CHC->CHD.
9.) SYSTEM SETUP
9.5) Two Channel Parallel Mode SX48000