SoundScope A12 Slim User manual

Installation Manual 45 Watt, Class D
SoundScope A12 Slim

SoundScope A12 Slim Installation Manual
Pg. 3
Important Safety Instructions
triangle, is intended to alert the user to the presence of un-
insulated dangerous voltage within the product’s enclosure that
shock to persons.
The exclamation point within an equilateral triangle is intended
to alert the user to the presence of important operating
and maintenance (servicing) instructions in the literature
accompanying the appliance.
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 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
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
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.
12. , 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.
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 MAINS plug or an appliance coupler is used as the disconnect device, so the disconnect device shall remain
readily operable.
16. This apparatus has been designed with Class-I construction and must be connected to a mains socket outlet with
a protective earthing connection (the third grounding prong).
Warning:
CAUTION
CAUTION: TOREDUCE THE RISK OF
ELECTRICAL SHOCK.
DONOT REMOVE COVER. NOUSER
SERVICEABLE PARTS INSIDE.
REFER S ERVICING TOQUALIFIED
SERVICE PERSONNEL.

SoundScope A12 Slim Installation Manual
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Table of Contents
1. Features
2. Package Contents
3. Recommended For Installation
3.1. Tools
3.2. Materials
3.3. Speaker Recommendation
4. Device Layout
4.1. Front Panel
4.2. Bottom
4.3. Rear Panel
5. System Design Considerations
5.1. Speaker Placement
5.2. Volume Control
5.2.1. No Inline Volume Controls
5.2.2. With Inline Volume Controls
5.3. Control Method
6. Installation and Setup
6.1.
6.1.1. Rack Mounting
6.2. Speaker Connections and Setup
6.2.1. Terminating Speaker Wire Connectors
6.2.2. Normal (Stereo) Output Zone
6.2.3. Bridged Output Zone
6.3. Source Connections and Input Setup
6.3.1. Input Selector Switch
6.3.2. Normal Stereo Input (4/8Ω Output)
6.3.3. Bridged Stereo Input (8Ω Only Output)
6.3.4. Normal Mono Input (4/8Ω Output)
6.3.5. Bridged Mono Input (8Ω Only Output)
6.4.
6.4.1. Master Power Switch
6.4.2. Front Panel Power Button
6.4.3. Power ON Mode
6.4.4. 12 Volt Trigger
6.4.5. AUTO (Audio Sense)
6.5. Zone Volume Calibration
6.5.1. Calibration Setup Tips
Applications Overview
6.6. Multi-Room Audio with Dedicated Sources
6.7. Multi-source Multi-Room Audio
7.
8. Troubleshooting
9. Warranty
10. Contacting Technical Support
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SoundScope A12 Slim Installation Manual
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1. Features
Durable Audiophile Design
reliable package. Plus, they feature superior-quality components for outstanding sound quality, and are up to 90%
Multiple Stages of Protection
Each pair of channels (or Zone) is individually protected with an operation mode indicated by bi-color LEDs on
shut down for protection due to a short, only the channels that are effected will be turned off. The other zones will
continue to play.
Global (A & B) and Direct Inputs
A dedicated input can be assigned to a pair of channels via the channel Line In connection. Each pair of channels
A 3-position switch is available for each
channel pair to choose between the Line-In and the 2 Global-Inputs.
needed for today’s demanding custom audio installations.
Individual Channel and Gain Adjustments
Each pair of channels has its own level adjustment which adjusts the maximum output. This allows the output to
be perfectly matched to its area. It can also be used to provide a limit on how loud each speaker may be allowed to
play.
Installation-Friendly Connections
Each pair of speakers features a removable speaker wire connector that accommodates 14-18 gauge stranded
speaker wire. The power cord is removable as well, facilitating fast and simple installations. The Global Inputs,
and individual Channel Inputs are all high-quality RCA connectors.
Bridging
The power output of adjacent channels can be combined to provide extra power when needed in certain areas.
Rack-Mountable
Power Mode
Power state can be toggled using the front Power Button, 12V input, or Audio Sensing for easy automated or
manual control.
Note: The front panel power button is inoperative when the 12V Trigger or Audio Sense power modes are
selected.
SoundScope
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2. Package Contents
3. Recommended For Installation
(1) SoundScope A12 Slim
(1) Installation Manual
(2) Rack Mounting Ears and Screws
(4) Removable Rack Feet and Screws
(1) Detachable IEC Power Cable
3.1. Tools
•#2 Philips Screwdriver
•Wire Strippers
3.2. Materials
•Speaker Wire
Use high-quality, 2 or 4 conductor, 14-18 gauge (AWG) speaker wire. The higher the strand count, the
better the sound quality will be. Using 4 conductor cables for stereo zones can save money and time on the
installation by reducing the number of wires that must be pulled.
•Source Input Cables
cables.
•Speaker Selectors and Volume Controls
speaker output and the speakers. Make sure that any equipment used is capable of handling the wattage
Any equipment used to add more speakers must have built–in impedance matching, or the speaker wiring must
3.3. Speaker Recommendation
The SoundScope A12 Slim is capable of handling a 4 ohm load at 45 watts for normal outputs, or an 8 ohm load at 90
watts for bridged outputs. Use speakers rated for 4-8 ohms and capable handling at least 45 watts RMS for the
best performance.
Avoid attaching more than two 8 ohm speakers or one 4-6 ohm speaker directly to any single output zone in
Normal mode. Attach only 8 ohm speakers directly to bridged output zones. When attaching multiple speakers
necessary to maintain the correct impedance.
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4. Device Layout
Use this section to become familiar with the connections, controls and features of the SoundScope A12 Slim
Refer to the page numbers in parentheses for more information on items regarding setup and operation.
4.1. Front Panel
4.2. Bottom
1. Power
1. Power
Change the transformer setting to allow for 115V or 230V AC operation.
Note: The SoundScope A12 Slim includes an IEC cable meant for use with a NEMA 5-15 receptacle supplying 115V AC power. For
countries utilizing 230V AC power, the cable can be swapped to the correct cable for that region. When using the 230V AC input
250V to a T4AL 250V fuse (See item 12, page 8 for fuse holder
, which is not covered by the warranty.
2. Channel Indicators
Indicates status of each channel based on the color of the LED.
1 2
Color State
Blue Power On, Normal Operation
Red Standby
Color State
Blue Channel is functioning correctly.
Red Channel is in Protection Mode
1

SoundScope A12 Slim Installation Manual
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4.3. Rear Panel
1 2
4 75 63
8 9 10 11 12
Same for All Outputs
1. Global Input A
RCA stereo line for source A input.
2. Global Input B
RCA stereo line for source B input.
3. Level (Gain/Volume)
Adjust the gain level of each output zone individually. (Counterclockwise for minimum; clockwise for
maximum.)
4. Channel Input Selector
Select the Global Input (A or B) or the local Line In for the output.
5. Bridge Switch
Select whether a pair of left and right output channels are individual or bridged together for a more powerful
mono channel. The NORMAL setting yields (2) 4Ω stable channels in one zone (Left and right stereo, 45w per
channel). The BRIDGED setting yields (1) 8Ω stable channel in one zone (mono 90w channel).
6. Local Line In
Local input for zone (plays only on that zone’s outputs). Use for instances where the zone will always play a
different source than other zones. Set the Channel Input Selector switch to “Line In” to use this input.
7. Speaker Output
Set-screw connector to attach speaker wires to zone output. Note the diagram below the connector port on the
8. Power Mode Selector
Set the preferred power mode: ON, AUTO or TRIGGER DC 12V.
9. Master Power Switch
Rocker style toggle switch for master power control.
10. 12 Volt Trigger Ports (In and Out)
TRIGGER DC 12V. When 4.5-15
11. Power Connector
Connect the included grounded, 3 prong IEC power cord for use with 120V AC applications, or the correct
power cord type for the country for 230V AC applications.
12. Fuse Holder
User-serviceable fuse holder. 1 spare fuse is included inside the holder. Replacement fuse types are listed in

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Pg. 9
5. System Design Considerations
5.1. Speaker Placement
bridged for one mono channel. For most applications, a pair of stereo speakers properly placed in a room (or a
single dual voice coil speaker playing stereo audio) will sound better than a mono bridged output feeding one
bigger speaker unless the extra power is needed for a high wattage speaker or a long wire run.
When planning speaker locations, check with the speaker manufacturer for the best possible layout for the
models used. As a general guideline, try to spread locations evenly to accommodate both the room dimensions
and the overall balance of each channel (left and right). Consider using a bridged output for large outdoor
speakers, or if a non-powered subwoofer will be attached to an output. Full information on speaker wiring and
connections can be found in Section 6.2 Speaker Connections andSetup.
5.2. Volume Control
eSection 6.5 Zone Volume Calibration.
5.2.1. No Inline Volume Controls
When setting up a system without inline volume controls, make sure that the source used has adjustable volume for
Any zones playing that input will change volume together. Each zone level can be calibrated individually to a degree
by changing its LEVEL knob.
This setup is optimal for zones utilizing dedicated input sources, as the volume is usually much more adjustable than
if an inline volume control were being used, and other zones aren’t affected by source volume changes.
5.2.2. With Inline Volume Controls
volume can be adjusted in each zone individually no matter what the other zones are set to. Source volume and
normal use.
If a multi-source setup is used (as in Section 6.7 Multi-source Multi-Room Audio) there will be full control of both
source selection and volume in every zone. Combined with an automation system for remote control of sources, this
setup allows for the most control possible in a multi-room audio application using the SoundScope A12.
5.3. Control Method
•Using the front Power button (Power ON mode) will allow manual control at all times, and is useful for
installations where the audio system will be powered on and shut down regularly at the equipment. Use this
mode if the system is always set by the user at the equipment.
•Avoid using Power ON mode for jobs where a remote is typically used to control the system, since the
may confuse the user into thinking there is a problem.
•When the system will be controlled from anywhere but at the equipment, try to use the TRIGGER DC 12V
automated toturn on whenever it is needed.
•
unit powered at all times due to either signal or noise on the line from the source. This can be avoided by
turning the source off completely when not in use, or by using a 12 volt trigger instead.
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SoundScope A12 Slim Installation Manual
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6. Installation and Setup
perience that makes your music come alive
receive and the life of the unit.
•Be sure that the unit is in a well-ventilated area that provides adequate cooling.
•Do not block the cooling vents located on both sides of the unit.
•Do not place the unit on carpeting or any similar material.
•Do not install the unit near a source of heat, or in an extremely humid or wet location.
•
necessary to create ventilation to allow outside air into the space.
•Allow a minimum of 5” of free air space above the unit.
•Allow a minimum of 3” of free air space on either side of the unit. (Does not apply to rack mounting)
3in.3in.
5in.
Minimum of 3"
free air space on
each side.
Minimum of 5"
free air space
above.
2in.
6.1.1. Rack Mounting
rack ears at the front left and right sides as shown below using the included screws. Tighten the screws tightly
with a screwdriver. Then, remove the feet on the bottom of the unit and store the feet and screws in case they
are needed later.
connections and adjustments for the output zone.
Important!
Remove Feet
Attach Ears using Supplied Screws
(4 on Each)
SoundScope
SoundScope A12 Slim

SoundScope A12 Slim Installation Manual
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R+ R- L+
L-
Right
Speaker
Left
Speaker
Switch Set to NORMAL
(Up)
Switch Set to BRIDGED
(Down)
R+ R- L+L-
Speaker
(+) Positive
Speaker
(-) Negative
6.2. Speaker Connections and Setup
The SoundScope A12 Slim has removable connectors to allow for the connection of two channels on each output
zone (1 left and 1 right) or one bridged mono channel if more power is needed. Follow the directions below to
properly connect speaker wiring.
6.2.1. Terminating Speaker Wire Connectors
Each output zone of the SoundScope A12 Slim utilizes a 4-pole set screw type connector for speaker wire connection.
To terminate the connectors properly:
1. Strip the outer jacket (if applicable) of the speaker cable back about 2”, and then strip the insulation of each wire
back ¼“.
2. .
3. Twist the wires clockwise, insert them into the correct holes, and tighten the screws. Do not allow any strands
of copper to touch between the terminals to avoid short circuits.
6.2.2. Normal (Stereo) Output Zone
Many audio applications use paired speakers in each listening zone, playing stereo left and right audio channels
will play at the same volume, and the speakers will be placed so that audio is balanced in the listening area.
6.2.3. Bridged Output Zone
For applications where more power is needed, any of the six output zones can be bridged together to make a
single output zone that is twice as powerful, but with twice the impedance (8 ohms instead of 4 ohms). This
is ideal for powering larger speakers or speakers on long cable runs. Bridging an output zone yields a mono
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Each output zone can be adjusted tothe correct volume. Followthese
directions toconnect the speakers.
Note: Be sure to follow the same wire color coding for “+” and “-” at both the
1. Set the Bridge mode switch to 4/8Ω NORMAL.
2. Attach the left and right speaker channel wires to their respective terminals on
the connector. Follow the same color coding on the wire for “+” and “-” as used at the speaker.
Note: Be sure to follow the same wire color coding for “+” and “-” at both the
When using a bridged output, the connection pattern is different than normal
output wiring. “+” and “-” connections are marked on the ampli
Follow these directions to attach speaker wiring to a bridged output.
1. Set the Bridge mode switch to BRIDGED (8Ω ONLY).
2. Attach the speaker channel wires to their respective terminals on the
connector as seen in the diagram at right. Follow the same color coding on
the wire for “+” and “-” as used at the speaker.
Important! Do not attach a speaker load of less than 8 ohms to any output set for BRIDGED
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6.3. Source Connections and Input Setup
6.3.1. Input Selector Switch
The SoundScope A12 Slim has several options for attaching sources. Global inputs A and B can be used to route
audio to any of the output zones, or a zone may be fed individually by its Local input. Settings and connections
vary based on the output settings used.
Each output zone (1-6) has its own switch to control the input used for the zone. Set the switch to GLOBAL A,
GLOBAL B, or LINE IN, depending on the source input desired for each output zone. See the following sections
6.3.4. Normal Mono Input (4/8Ω Output)
If a source only provides a mono output and it must be played through a normal stereo output, the source signal
cable must be split using an RCA 2 way splitter. Connect an RCA cable from the source output and use the splitter
to connect it to the desired left and right inputs. This will allow the source to play through both the left and right
channels equally. This applies to both LINE IN and GLOBAL inputs.
6.3.5. Bridged Mono Input (8Ω Output Only)
To connect a mono source for use with a bridged output zone, connect an RCA cable from the source output to the
left channel of the desired input.
Note: It is recommended to use the LINE IN of the bridged zone instead of a GLOBAL input unless only bridged
mono output zones are set to play that GLOBAL input. Normal output zones will only play mono audio through
the left channel speakers if the input is selected.
6.3.2. Normal Stereo Input (4/8Ω Output)
For normal applications, one output zone can power one left and one right channel. To connect a stereo source for
use in this application, connect an RCA cable from the source output left and right channel to the desired input left
6.3.3. Bridged Stereo Input (4/8Ω Output)
For applications where two-channel stereo requires higher output than a standard zone can provide, two output
zones can be bridged, with one used for left and one used for right audio. To attach a stereo source for use in
this application, connect an RCA cable from the source output left channel to the left channel LINE IN of the
zone connecting to the left speaker wiring. Connect the RCA cable from the source output right channel to the
left channel LINE IN of the zone connecting to the right speaker wiring. Set the input selector switches on each
bridged zone to LINE IN.
Note: When using bridged outputs for stereo audio, the global inputs may be used, but if they are, they can only
feed the bridged zone(s) to achieve stereo audio, and any other inputs must be attached to LINE IN of the zone
they feed.
and the source’s right channel output to the left channel input for GLOBAL B. Then set the input selector switches
appropriately on the desired left and right output zones.

SoundScope A12 Slim Installation Manual
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6.4.1. Master Power Switch
The master power toggle switch at the back of the unit controls the main power
will not respond to any control method. This switch should be left in the ON position after installation and setup is
decide on one of the options below.
Use the Power Mode switch (below the Master Power switch) to select the desired power control mode.
6.4.2. Front Panel Power Button
all illuminate solid blue (if any channel LED illuminates RED, remove power immediately and consult the
Troubleshooting section to diagnose the issue. This indicates that a channel is in safe mode.). When it is off the
power button will be red and the channel LEDs will turn off.
Note:
6.4.3. Power ON Mode
Power button to toggle between Stand-by and On.
6.4.5. AUTO (Audio Sense)
source connection and power on when the level is high enough to be process as an audio signal. No further setup
is needed.
Stand-by mode until a signal is received again.
6.4.4. 12 Volt Trigger
Some audio sources and custom remote control systems can use a 12V DC trigger output to control the power
.
To utilize the 12V DC trigger function, set the Power Mode switch to the right (closest to the 12V trigger
connections) and attach a mono mini cable between the 12V trigger output of the controlling device and the
TRIGGER DC 12V IN port on the SoundScope A12 Slim. Connect to other devices by connecting them to the OUT
Tip
Sleeve
Cable 3.5mm Mono-mini
Tip 4.5-15V DC (constant during use)
Sleeve Ground/Common
SoundScope A12 Slim

SoundScope A12 Slim Installation Manual
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6.5. Zone Volume Calibration
Follow these directions to calibrate the LEVEL setting in relation to the source input volume and inline volume
control level (if applicable) for the best sounding and most reliable installation.
1.
leave it turned Off at the Master Power Switch.
2. (If applicable) Set all volume controls to their maximum volume setting.
3. Set the LEVEL for each zone in use to baseline by turning the knob counterclockwise to its minimum limit, and
then turning it back up about ¼ turn. Set the LEVEL for any unused zones to minimum (counterclockwise).
4.
the volume of the source to around half of its volume. If the audio becomes distorted, turn the volume back to
a point where audio is clear.
5. Set the LEVEL adjustment for the zone to a level where the volume is slightly above normal listening level. If
the audio becomes distorted, experiment with changes to the source volume and the LEVEL adjustment until
audio is clear and slightly too loud.
6. Now the volume level of each zone is matched to the volume of the source input. Adjust the level of audio
back to a comfortable level by adjusting the inline volume control (if equipped) or the source volume.
6.5.1. Calibration Setup Tips
The following common issues may occur with a poorly calibrated system. Use the tips listed to identify and correct
these problems:
Distorted Audio at Normal Volume
If the LEVEL adjustment for a zone is set too high to compensate for low source volume, distortion can occur in the
form of background noise or poor audio quality. This will be heard as a steady hissing or humming behind music,
clipping of signal, or distortion of highs and lows.
volume so that a maximum comfortable volume level can be reached with no distortion while using the source
volume or inline control.
Inline Volume Controls “Thump” or Play Source Audio in the Walls
and the volume controls are being used to attenuate too much power from the speakers. This causes the entire
system to work harder, and can reduce reliability and sound quality.
adjustment levels away from their maximum setting when audio heard in the room is at the normal listening level.
This will leave one to three settings above normal level for use if a little extra volume is needed.

SoundScope A12 Slim Installation Manual
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Applications Overview
6.6. Multi-Room Audio with Dedicated Sources
R
L
Zone 2
Out
Input 1
Input 2
Input 3
AV Receiver
R+ R- L+
L- R+ R- L+ L- R+ R- L+ L- R+ R- L+ L- R+ R- L+ L- R+ R- L+ L-
Room
1
Room
2
Room
3
Room
4
Back Patio
(Zone 5 & 6
Bridged)
Blu-ray Player
Cable Box
AppleTV
R
L
Analog
Out
Streaming Music
Player
The diagram above illustrates the basic setup of a multi-room audio system with dedicated source inputs. See the
notes below to understand the setup:
•The AV Receiver Zone 2 output is connected to the GLOBAL A input so that any sources attached to the
AV receiver can be played throughout the home on zones 1 through 4 at the same time. (zones 1-4 input
selectors are set to GLOBAL A)
•Each of the zones powering Rooms 1 through 4 are using the NORMAL (4-8Ω) output mode to allow for
a pair of speakers to be attached for left- and right channel audio in each zone. Individual zone volume is
adjustable through the inline volume controls in the rooms so that speakers can be turned off or adjusted to the
appropriate volume level as needed.
•Any source attached to the AV receiver can be set to play on zones 1 through 4, but there is no way to change
•Zones 5 and 6 are both bridged so that more power can be delivered to a pair of large outdoor speakers on the
Back Patio. There is no volume control since the end user can simply adjust the source volume directly using
their remote control for the player (they already use it for selecting what the source is playing).
•In this application, a dedicated source has been connected for use on the patio, since bridged stereo would
require the use of both Global inputs, and the other zones would not be able to play both channels (because
they are not set to bridged, they would only receive signal and play audio on their left output channels).
•
be used in this case since two trigger inputs would be needed– one from the AV receiver, and one from the
streaming music player to allow for reliable operation.

SoundScope A12 Slim Installation Manual
Pg. 16
6.7. Multi-Source Multi-Room Audio
The diagram above illustrates the basic setup of a multi-room audio system with selectable source inputs routed
through an audio matrix. See the notes below to understand the setup:
•
of the source routing to each zone. Inline volume controls are utilized for zone volume adjustment so that
changing source volume won’t affect more than one listening zone.
•Each of the zones powering Rooms 1 through 4 are using the NORMAL (4-8Ω) output mode to allow for a pair
of speakers to be attached for left- and right-channel audio in each zone. Individual zone volume is adjustable
through the inline volume controls in the rooms so that the volume level can be adjusted as needed.
•Zones 5 and 6 are both set to BRIDGED output mode so that more power can be delivered to a pair of large
outdoor speakers on the Back Patio. The matrix output has been connected to the left channel LINE IN of the
•There is a control system installed on the job for source control that also has a 12 volt trigger output, so the
Power mode has been set to TRIGGER DC 12V. When any source is turned on for use, the control system
program also turns on the SoundScope A12 Slim by energizing the trigger. When the system is turned off, the
R+ R- L+
L- R+ R- L+ L- R+ R- L+ L- R+ R- L+ L- R+ R- L+ L- R+ R- L+ L-
Room1 Room2 Room3 Room4
Back Patio
(Zone 5 & 6
Bridged)
Blu-ray Player R L Cable / Sat Receiver
R L
AppleTV Toslik
Out
B-220-DAC
R L Toslink
In
Audio Matrix Switcher
R L R L R L R L R L R L
R L R L R L
12 Volt Trigger Wire
(From Control System)

SoundScope A12 Slim Installation Manual
Pg. 17
Continuous Power Output
(All Channels)
45 watts RMS at 4 ohms
30 watts RMS at 8 ohms
Bridged Power Output
(All Channels)
90 Watts per channel RMS at 8 ohms
Note: Maintain 8 ohm minimum when using bridge mode
Input Sensitivity 500mV
Input Impedance 20,000 ohms
AUTO ON (Audio Sense)
Sensitivity 2.5mV
12 Volt Trigger Input 12V DC; 10K Ohms
12 Volt Trigger Output 12V DC; 10mA
S/N ratio 95 dB
Frequency Response 20 Hz to 20 kHz
Distortion (Un-bridged) 0.1% THD 20 Hz-20 kHz
Distortion (Bridged) 0.1% THD 20 Hz-20 kHz
Input Voltage 115V AC/230V AC
Fuse
115V AC T8AL 250V
230V AC T4AL 250V
Dimensions (Inches) 17”W x 2.3”H x 11”D
Weight 9.4 lbs.
Meets FCC Part 15, ETL Listed and tested under UL/EN60065

SoundScope A12 Slim Installation Manual
Pg. 18
8. Troubleshooting
No audio from any channel
•
outlet that does not have power. Check connections and verify power on
the outlet.
•Audio cable to the source component is not connected properly, connected
to incorrect BUS input or the cable is defective. Check connections or
•The Input Selection switches are set incorrectly. Refer to instructions for
correct settings.
No audio from one or more
channels
•Audio cable to the source component is not connected properly or the
cable is defective. Check connections or replace cable with one that has
•The Input Selection switch is positioned incorrectly. Refer to installation
instructions for proper settings.
•The Bridging switch is positioned incorrectly. Refer to installation
instructions for proper settings.
•Check the connections of the speaker wire at both the speaker and
No audio from one channel or
one zone only
•Check the front panel LED for the zone that is not working. If it is red, you
may have a short on either one of the speaker wires for that zone. Check
wires and speaker connections for shorts.
•The level adjustment on the channel is turned down. Turn it slowly to the
right to raise the volume.
•Test the bad channel by connecting it to a speaker that you know works.
•Audio cable to the source component is not connected properly or the
cable is defective. Check connections or replace cable with one that has
•The Input Selection switch is positioned incorrectly. Refer to installation
instructions for proper settings.
•The Bridging switch is positioned incorrectly. Refer to installation
instructions for proper settings.
•Check the connections of the speaker wire at both the speaker and
Hum or buzzing sound is
heard
•Check RCA input cables by removing them one at time (powering down
cable is to blame.
•
•The power switch on the back panel must be on.
•Ensure 12V is present if using the trigger input.
•Ensure that the Power Mode switch is set correctly for the desired power
mode.
Front panel power button is
inoperative •Set the Power Mode Switch to POWER ON.

SoundScope A12 Slim Installation Manual
Pg. 19
9. Warranty
10. Contacting Technical Support
2 Year Limited Warranty
labor repairs on all components found to be defective in material or workmanship under normal
or disassembled. Products to be repaired under this warranty must be returned to SnapAV or a
Email: [email protected]
SoundScope A12 Slim