Optimal Audio SmartAmp User manual

Ampliers
SmartAmp
Ampliers with DSP
USER GUIDE
>

The Optimal Audio range of
compatible audio zoners, controller,
ampliers and loudspeakers are
designed to work together simply
and effectively. Our quick start
guides will take you through
connectivity and set up in a
straightforward style that reects the
Optimal Audio brand.
Congratulations on your choice of Optimal Audio
for your latest sound system installation.
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© 2021. Optimal Audio Group Ltd. (v1.0)
Introduction
Overview
Start using
Power up
Rear panel
Inputs
Outputs
>
<
Dip switches
GPIO
Installation
Maintenance
Tech specs
Appendix A
Appendix B
Appendix C
Safety info

There are three ampliers in the SmartAmp range:
SmartAmp 10
Two channels of Class D amplication, 125W each with power sharing, low
impedance or 70 – 100V output, integrated DSP
SmartAmp 20
Four channels of Class D amplication, 125W each with power sharing between
pairs of channels, low impedance or 70 – 100V output, integrated DSP
SmartAmp 30
Four channels of Class D amplication,
250W each, low impedance or 70 – 100V
output, integrated DSP
3/20
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© 2021. Optimal Audio Group Ltd. (v1.0)
Introduction
Overview
Start using
Power up
Rear panel
Inputs
Outputs
>
<
Dip switches
GPIO
Installation
Maintenance
Tech specs
Appendix A
Appendix B
Appendix C
Safety info

All SmartAmps come loaded with DSP presets for Optimal Audio Up series
ceiling speakers and the smaller models in the Cuboid range. Presets are easily
selected via the dip switches on the rear panel. Presets can be found later in this
guide.
SmartAmp 10 and 20 offer increased exibility through power sharing between
pairs of channels. This means that if the power requirement on one channel of an
adjacent pair is required to deliver more that its rated 125W, it can draw unused
power from its partner channel, assuming it has the power available.
This does not apply for SmartAmp 30, which offers 4 channels of 250 W.
All SmartAmp models use identical connectors, which are supplied with the
units. Inputs are 3.5mm pitch green Euro Block connectors. Amplier outputs are
5mm pitch green Euro Block connectors. Refer to the diagrams on the rear panel
of SmartAmp for the correct wiring, and the Optimal Audio Connectors and
Cables, Lights and Labels Quick Start Guide, which will help you get the wiring
right.
• Connect the output of your Optimal Audio Zone 4 or 8 that relates to the
loudspeakers in the area you want your SmartAmp to power
• Once you have connected everything up, plug your SmartAmp into the mains
power and turn it on
• Turn the relevant amplier channel volume knob all the way up
• Apply signal and the amplier will automatically wake up, the front panel LED
turning from red (standby) to green (operational)
• Green LED’s will illuminate on the channels to which signal is applied.
Start using your SmartAmp
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Introduction
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Rear panel
Inputs
Outputs
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Dip switches
GPIO
Installation
Maintenance
Tech specs
Appendix A
Appendix B
Appendix C
Safety info

240V AC, 50/60Hz. Use the mains cable appropriate to your region as supplied
with the amplier and connect it to a switched mains supply.
SmartAmp ampliers have no mains power switch and are operational as
soon as mains power is connected. Ensure that all signal, GPIO and output
connections are made and that all DIP switch options are selected appropriately
before connecting the amplier to mains power.
NOTE
SmartAmps are Energy Star compliant and will sleep when not in use to
minimize energy consumption. On receiving a signal at the input above
-47dBu the amplier will wake up.
Ampliers will not power up from standby mode unless an input signal is
present.
Powering Up
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Introduction
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Inputs
Outputs
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Dip switches
GPIO
Installation
Maintenance
Tech specs
Appendix A
Appendix B
Appendix C
Safety info

SmartAmp 10
SmartAmp 20 & SmartAmp 30
Rear Panel Connections & Controls
GPIO
GPIO
Input Channel
1 & 2
Input Channel
1 & 2
Input Channel
3 & 4
Output Channel
3
Output Channel
4
Output Channel
1
Output Channel
1
Output Channel
2
Output Channel
2
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Introduction
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Rear panel
Inputs
Outputs
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Dip switches
GPIO
Installation
Maintenance
Tech specs
Appendix A
Appendix B
Appendix C
Safety info

SmartAmp inputs are of balanced, line level format and require the use of
suitable two-core, screened signal cable.
Input connections to SmartAmp are achieved via male ‘Euro Block’ connectors.
Connecting cables to the supplied female input connectors is illustrated below
Input Connections
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Inputs
Outputs
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Dip switches
GPIO
Installation
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Tech specs
Appendix A
Appendix B
Appendix C
Safety info

All channels are capable of both Low-Z and Hi-Z (70V or 100V) outputs.
Output impedance is selected by a combination of the impedance switches
and the active preset. Where presets include subs, these channels are xed
at low impedance.
It is critical that the correct connections are made using the appropriate
‘Euro Block’ connectors, supplied with the unit. Again, ensure the amplier is
off when connecting loudspeakers and check that you have used the correct
combination of pins for your application.
Be aware that the Hi-Z output pins can deliver voltages up to 100 volts!
Output connections from SmartAmp are achieved via male ‘Euro Block’
connectors. Ensure that speaker connection polarity is correct throughout
the installation: positive (+) amplier terminals should always be connected
to positive speaker terminals and negative (–) amplier terminals always
connected to negative speaker terminals.
Together with DIP switch conguration, the output connector blocks provide
connection options that enable channel independent selection of Hi-Z or
Low-Z mode. Connecting cables to the supplied female output connector,
and the selection of Hi-Z or Low-Z connection options as shown in the
diagram.
Loudspeaker Outputs
Ch1: Low-Z connection
Ch2: Hi-Z connection
Ch3: Hi-Z connection
Ch4: Low-Z connection
The caution symbol printed next to the
OUTPUT terminals of the SmartAmp
amplier is in addition to the “CLASS
2 WIRING” text intended to alert the
user to the risk of hazardous energy.
Output connectors that could pose a
risk are marked with caution symbol.
Do not touch the output terminals while
the amplier power is on. Make all
connections with the amplier turned off.
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© 2021. Optimal Audio Group Ltd. (v1.0)
Introduction
Overview
Start using
Power up
Rear panel
Inputs
Outputs
>
<
Dip switches
GPIO
Installation
Maintenance
Tech specs
Appendix A
Appendix B
Appendix C
Safety info

The dip switches allow you to
select the recommended DSP
presets for the Optimal Audio
Up series of ceiling speakers,
Cuboid 8, Cuboid 10 and Sub
10. The following tables contain
all the presets available in
SmartAmp 10, 20 and 30. Be
sure to use the correct table
for the amp you are using, as
SmartAmp 10 has different
preset allocations to SmartAmp
20 and 30.
Please note that only the
rst 5 switches are used for
loudspeaker preset selection.
SmartAmp Presets – white
squares show switch position.
Dip Switches
SmartAmp 10
Preset No. Speaker Configuration Phase 1
CH1 CH2 12345
22222
1
2 2 2 2
1
2 2 2 2
1 1
2 2 2
1
2 2 2 2
1 1
2 2 2
1 1
2 2 2
111
2 2
1
2 2 2 2
1 1
2 2 2
1 1
2 2 2
1 1 1
2 2
1 1
2 2 2
1 1 1
2 2
1 1 1
2 2
1 1 1 1
2
1
2 2 2 2
1 1
2 2 2
1 1
2 2 2
1 1 1
2 2
1 1
2 2 2
1 1 1
2 2
1 1 1
2 2
1 1 1 1
2
1 1
222
1 1 1
2 2
1 1 1
2 2
1 1 1 1
2
1 1 1
2 2
1 1 1 1
2
1 1 1 1
2
11111
27
28
29
30
31
Reserved
Reserved Reserved
Reserved Reserved
Reserved Reserved
Reserved Reserved
Reserved Reserved
Reserved Reserved
Reserved Reserved
Reserved
Reserved
24
25
26
15
17
18
19
20
21
22
Up 4
16 Sub 10 Up 4O
23
Reserved
Reserved
Reserved Reserved
Reserved Reserved
Sub 10 Up 6
Reserved Reserved
Reserved
Reserved
10 Reserved Reserved
Sub 10 Up 4S
12
Reserved
Reserved
13 Sub 10 Sub 10
14 Sub 10 Up 3
Sub 10
Up 4S Up 4S
11 Reserved Reserved
6Reserved Reserved
7
Reserved
Reserved
8Reserved Reserved
9Reserved
5Up 6 Up 6
0No Processing No Processing
1Up 3 Up 3
2Up 4 Up 4
3
Up 4O
Up 4O
4
SmartAmp 20 & 30
Preset No. Speaker Configuration Phase 1
CH1 CH2 CH3 CH4 12345
22222
1
2222
1
2 2 2 2
1 1
222
1
2 2 2 2
1 1
2 2 2
1 1
2 2 2
1 1 1
2 2
1
2 2 2 2
1 1
2 2 2
1 1
2 2 2
1 1 1
2 2
1 1
2 2 2
1 1 1
2 2
111
2 2
1 1 1 1
2
1
2 2 2 2
1 1
222
1 1
2 2 2
1 1 1
2 2
1 1
2 2 2
1 1 1
2 2
1 1 1
2 2
1 1 1 1
2
1 1
2 2 2
1 1 1
2 2
1 1 1
2 2
1 1 1 1
2
111
2 2
1 1 1 1
2
1111
2
11111
28 Reserved Reserved Reserved Reserved
31 Reserved Reserved Reserved Reserved
29 Reserved Reserved Reserved Reserved
30 Reserved Reserved Reserved Reserved
26
Reserved
Reserved
Reserved
Reserved
27 Reserved Reserved Reserved Reserved
24 Reserved Reserved Reserved Reserved
25 Reserved Reserved Reserved Reserved
22 Sub 10 Cuboid 10 Sub 10 Cuboid 10
23 Reserved Reserved Reserved Reserved
20 Reserved Reserved Reserved Reserved
21
Sub 10
Cuboid 8
Sub 10
Cuboid 8
18 Reserved Reserved Reserved Reserved
19 Reserved Reserved Reserved Reserved
16 Sub 10 Up 4S Sub 10 Up 4S
17 Sub 10 Up 6 Sub 10 Up 6
14 Sub 10 Up 4 Sub 10 Up 4
15 Sub 10 Up 4O S ub 10 U p 4O
12
Sub 10
Sub 10
Sub 10
Sub 10
13 Sub 10 Up 3 Sub 10 Up 3
10 Cuboid 8 Cuboid 8 Cuboid 8 Cuboid 8
11 Cuboid 10 Cuboid 10 Cuboid 10 Cuboid 10
8Reserved Reserved Reserved Reserved
9Reserved Reserved Reserved Reserved
6Reserved Reserved Reserved Reserved
7
Reserved
Reserved
Reserved
Reserved
4Up 4S Up 4S Up 4S Up 4S
5Up 6 Up 6 Up 6 Up 6
2Up 4 Up 4 Up 4 Up 4
3
Up 4O
Up 4O
Up 4O
Up 4O
0No Processing No Processing No Processing No Processing
1Up 3 Up 3 Up 3 Up 3
DIPS 6 7
DIPS 8
1
0
1
2
3
0
Trim gains disabled
Trim gains enabled
Low-Z 8 ohms
High-Z 100V
Low-Z 4 ohms
High-Z 70V
DIPS 6 7
DIPS 8
1
0
1
2
3
0
Trim gains disabled
Trim gains enabled
Low-Z 8 ohms
High-Z 100V
Low-Z 4 ohms
High-Z 70V
DIPS 6 7
DIPS 8
1
0
1
2
3
0
Trim gains disabled
Trim gains enabled
Low-Z 8 ohms
High-Z 100V
Low-Z 4 ohms
High-Z 70V
DIPS 6 7
DIPS 8
1
0
1
2
3
0
Trim gains disabled
Trim gains enabled
Low-Z 8 ohms
High-Z 100V
Low-Z 4 ohms
High-Z 70V
SmartAmp standalone mode
+4dBu input level gives maximum
amplier output
Front panel volume controls active
SmartAmp used with a Zone
processor
+20dBu input level gives maximum
amplier output
Front panel volume controls inactive
and levels set to unity.
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© 2021. Optimal Audio Group Ltd. (v1.0)
Introduction
Overview
Start using
Power up
Rear panel
Inputs
Outputs
>
<
Dip switches
GPIO
Installation
Maintenance
Tech specs
Appendix A
Appendix B
Appendix C
Safety info

The GPIO connectors enable remote control of key parameters of SmartAmp:
*In order to conform to EMC specications, shielded cable must be employed
when connecting external volume control potentiometers to the GPIO connectors.
This is to prevent the cable acting as an antenna for any radiated emissions from
within the amplier.
Be sure to use the appropriate Euro Block connector for the GPIO inputs
GPIO (General Purpose In/Out) Connections
Function Notes
GPIO GND (1) Ground reference for all GPIO pins
GPIO v12 (2) * Channel 1 & 2 auxiliary gain
control
Connect to a potentiometer (>10kΩ) wiper between
the VCC and GND pins. The maximum level available
when using GPIO control is dened by the front panel
gain control setting.
GPIO V34 (3) * Channel 3 & 4 auxiliary gain
control (four channel ampliers
only)
Connect to a potentiometer (>10kΩ) wiper between
the VCC and GND pins. The maximum level available
when using GPIO control is dened by the front panel
gain control setting.
GPIO VCC (4) Control voltage output Provides a 3.3V DC control output (100Ω
output impedance) for up to two volume control
potentiometers (>10kΩ)
GPIO STB (5) Alarm Mute Connect to GND pin to mute the unit and place it in
standby mode
GPIO GPO (6) Mute Out OV DC indicates normal status, +3.3V DC indicates
one or more channels in protection mode
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Introduction
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Inputs
Outputs
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Dip switches
GPIO
Installation
Maintenance
Tech specs
Appendix A
Appendix B
Appendix C
Safety info

Optimal Audio provide a set of hardware options for rack mounting SmartAmp in
several ways.
Rack Kit A (see Appendix A) is suitable for rack mounting both full and half-rack-
sized units and enables coupling of half-rack-sized units to t two SmartAmp 10
or 20 into a single rack space.
Rack Kit B (see Appendix B) is for providing rear support to units when mounted
in mobile racks and other more demanding situations
SmartAmp Wall Mount (See Appendix C) is used for mounting any of the
SmartAmp range against at surfaces
SmartAmp 30 is shipped with rack mount ‘ears’ attached as illustrated above and
is primarily intended to be installed in an equipment rack. The installation and
equipment rack should be congured to provide appropriate ventilation airow
space around the sides and rear of the amplier. Ventilation airow space of at
least 25 mm (1 in) should be maintained along at least one side of the amplier
at all times. Ventilation apertures are also located on the rear panel of the
amplier and must not be obstructed. It is important to retain at least 80 mm (3.1
in) free space for airow behind the amplier rear panel.
Installation & Rack Mounting
SmartAmp 30 showing rack ears and with the rear support attached
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Appendix A
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Appendix C
Safety info

SmartAmp 20 is shipped without rack mount hardware attached but can be
congured for rack installation using one standard rack ‘ear’ and one half-rack
extension piece as illustrated. The installation and equipment rack should be
congured to provide appropriate ventilation airow space around the sides and
rear of the amplier. Ventilation airow space of at least 25 mm (1 in) should
be maintained along at least one side of the amplier at all times. Ventilation
apertures are also located on the rear panel of the amplier and must not be
obstructed. It is important to retain at least 80 mm (3.1 in) free space for airow
behind the amplier rear panel.
In addition to rack mount ears, optional rack mount rear support hardware is
available and can be attached to the amplier. Rear support hardware may
be appropriate if the amplier is to be used in a mobile rack or potentially be
subject to signicant movement. Multiple SmartAmp 20 can also be mechanically
connected using accessory connecting plates.
Installation & Rack Mounting
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Appendix C
Safety info

Two SmartAmp 20 ampliers mechanically connected through the connection
plate.
SmartAmp 10 is also shipped without rack mount hardware attached but can be
congured for rack installation in the same way as SmartAmp 20.
Free-standing
If not to be installed in an equipment rack, SmartAmp can be placed free-
standing on a at surface. Adhesive rubber feet are supplied for this purpose.
SmartAmp 10 and SmartAmp 20 can also be attached to the underside of desks
or wall mounted using connecting plate hardware. The adhesive rubber feet
should also be used in these circumstances. Wall and desk mounting is illustrated
above.
It is important in any free-standing installation that airow through the
amplier’s side panel mounted fans and rear panel ventilation apertures is
not compromised by adjacent items. At least 80mm of free space behind the
amplier and 25mm along at least one side should be retained at all times.
Installation & Rack Mounting
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Appendix A
Appendix B
Appendix C
Safety info

Your Optimal Audio SmartAmp should require minimal maintenance and prove to be
a reliable workhorse in your sound system
From time to time it may be necessary to clean the fan lters. SmartAmps are forced
air cooled, and if located in certain environments the lters can become blocked,
causing the amplier to run at high temperatures, with the potential for shut down.
If in doubt, contact your distributor, who will help you with whatever you need to
keep your Optimal Audio system running at its best.
Maintenance
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Appendix C
Safety info

TECHNICAL SPECIFICATIONS SmartAmp 10 SmartAmp 20 SmartAmp 30
TYPE CLASS D power amplifier with DSP CLASS D power amplifier with DSP CLASS D power amplifier with DSP
POWER OUTPUT (4Ω-16Ω) 2 x 125W 4 x 125W 4 x 250W
70V – 100V OUTPUT 2 x 125W 4 x 125W 4 x 250W
DIGITAL SIGNAL PROCESSING EQ & limiter presets for Optimal Audio loudspeakers EQ & limiter presets for Optimal Audio loudspeakers EQ & limiter presets for Optimal Audio loudspeakers
COOLING Forced air cooling with fan Forced air cooling with fan Forced air cooling with fan
ANALOGUE IN/LINK 2 balanced line inputs on Euroblock connectors 4 balanced line inputs on Euroblock connectors 4 balanced line inputs on Euroblock connectors
ANALOGUE INPUT IMPEDANCE 10kΩ unbalanced, 20kΩ balanced 10kΩ unbalanced, 20kΩ balanced 10kΩ unbalanced, 20kΩ balanced
MAXIMUM ANALOGUE INPUT LEVEL +24dBu +24dBu +24dBu
AMPLIFIER OUTPUTS Euroblock Euroblock Euroblock
SIGNAL TO NOISE RATIO > 100dB (A-weighted, 20Hz - 20kHz, 8Ω load) > 100dB (A-weighted, 20Hz - 20kHz, 8Ω load) > 100dB (A-weighted, 20Hz - 20kHz, 8Ω load)
FREQUENCY RESPONSE 20Hz - 20kHz, +0/-0.25dB (8Ω load, 3 dB below rated power) 20Hz - 20kHz (+0/-0.25dB (8Ω load, 3dB below rated power) 20Hz - 20kHz, +0/-0.25dB (8Ω load, 3dB below rated power)
TOTAL HARMONIC DISTORTION < 0.05 % (20Hz - 20kHz, 8Ω load, 3dB below rated power) < 0.05 % (20Hz - 20kHz, 8Ω load, 3dB below rated power) < 0.05 % (20Hz - 20kHz, 8Ω load, 3dB below rated power)
SLEW RATE 8.796V/µS at 70V peak, low impedence,
17.77V/µS at 100V peak, high impedence
8.796V/µS at 70V peak, low impedence,
17.77V/µS at 100V peak, high impedence
8.796V/µS at 70V peak, low impedence,
17.77V/µS at 100V peak, high impedence
DAMPING FACTOR 370 with 8Ω load 370 with 8Ω load 370 with 8Ω load
CONTROL AND MONITORING GPIO GPIO GPIO
DSP SAMPLE RATE 48kHz 48kHz 48kHz
MAINS POWER INPUT Universal mains, 100-240V, 50-60Hz Universal mains, 100-240V, 50-60Hz Universal mains, 100-240V, 50-60Hz
MAINS CONNECTOR IEC IEC IEC
POWER CONSUMPTION 75W 150W 300W
HEAT GENERATED 270kJ per hour 540kJ per hour 1080kJ per hour
DIMENSIONS (W) 220mm x (H) 43.9mm x (D) 277mm
(W) 8.67” x (H) 1.73” x (D) 10.91”
(W) 220mm x (H) 44mm x (D) 353mm
(W) 8.67” x (H) 1.73” x (D) 13.90”
(W) 440mm x (H) 44mm x (D) 308mm
(W) 17.32” x (H) 1.73” x (D) 12.13”
WEIGHT 1.9kg (4.2lb) 2.4kg (5.3lb) 3.6kg (7.9lb)
ACCESSORIES (available separately) Rack ears and connection plate, rear rack support kit, wall/desktop mount kit Rack ears and connection plate, rear rack support kit, wall/desktop mount kit Rear rack support kit
ACCESSORIES (included) n/a n/a 2 x rack ears
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Appendix A
Appendix B
Appendix C
Safety info

SmartAmp Rack Kit A
15/11/2021
CC
001
1
4
4
1
Single Half Rack Unit
1
2
1
Torx Screw Countersink
M4 x 8
Torx Screw Countersink
M3 x 6 Black
Torx Screw Button
M3 x 6 Black
Two Joined Half Rack Units
Long Rack ear
Rack Ear
Coupling Plate
SmartAmp Support Bush4
5
6
7
1
2
3
5
7
4
3
5
21
6
2
Appendix A
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Appendix C
Safety info

SmartAmp Rack Kit B
18/11/2021
CC
001
Rack Kit B Front
Rack Kit B Back
Support Bracket
Support Bush
Torx Screw Flathead
M4 x 8
1
2
3 2
2
2
13
2
Appendix B
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Appendix C
Safety info

SmartAmp Wall Mount
24/11/2021
CC
001
1
2
2
4
SmartAmp Wall Mount
Wall Mount Bracket
Torx Screw Countersink M3 x 6 Black
1
2
Appendix C
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Safety info

This symbol is intended to alert the user to
the presence of important operating and
maintenance (servicing) instructions in the
literature accompanying the appliance.
WARNING!
DO NOT EXPOSE THIS EQUIPMENT
TO RAIN OR MOISTURE
This symbol is intended to alert the user to the
presence of uninsulated “dangerous voltage”
within the product’s enclosure that may be of
sufcient magnitude to constitute a risk of
electric shock to persons.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
THIS EQUIPMENT MUST BE EARTHED
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 opening. 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. To reduce the risk of electrical shock, the power cord shall be
connected to a mains socket outlet with a protective earthing
connection.
10. 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 are provided for your safety. If the
provided plug does not t into your outlet, consult an electrician for
replacement of the obsolete outlet.
11. Protect the power cord from being walked on or pinched particularly
at plugs, convenience receptacles, and the point where they exit from
the apparatus.
12. Do not unplug the unit by pulling on the cord, use the plug.
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. The appliance coupler, or the AC Mains plug, is the AC mains
disconnect device and shall remain readily accessible after installation.
16. The apparatus shall not be exposed to dripping or splashing and
no objects lled with liquids, such as vases, shall be placed on the
apparatus.
17. Do not remove any covers, loosen any xings or allow items to enter
any aperture.
Important Safety Instructions FCC Compliance
This device complies with part 15 of the FCC Rules. Operation is subject to
the following two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received, including
interference that may cause undesired operation.
Note: This equipment has been tested and found to comply with the limits
for a Class B digital device, pursuant to part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates uses
and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio
communications.
19/20
SmartAmp
Ampliers with DSP
Ampliers
USER GUIDE
© 2021. Optimal Audio Group Ltd. (v1.0)
Introduction
Overview
Start using
Power up
Rear panel
Inputs
Outputs
>
<
Dip switches
GPIO
Installation
Maintenance
Tech specs
Appendix A
Appendix B
Appendix C
Safety info

Relax, It’s Optimal Audio.
Optimal Audio Group Ltd.
Century Point, Halifax Road,
Cressex Business Park,
High Wycombe,
Buckinghamshire,
HP12 3SL
optimal-audio.co.uk