Emotiva Fusion Flex User manual

Important Safety Precautions and Explanation of Symbols
!
The exclamation point within an equilateral triangle is intended to alert the user to the presence of
important installation, operation, and service instructions in this manual.
The lightning ash with arrowhead symbol within an equilateral triangle is intended to alert the user to the
presence of uninsulated dangerous voltages within the enclosure that may be of sucient magnitude to
constitute a risk of electrical shock to the user.
Please read this manual thoroughly before attempting to install, congure, or operate the Fusion Flex
Amplier. After successful installation and conguration of the Fusion Flex Amplier, be sure to retain this
manual in a safe place for future reference.
Safety is a key component to a long lasting and trouble free installation. Please read and follow all
instructions and heed all warnings on the Fusion Flex Amplier and in this manual. The vast majority of the
subsequent safety precautions are common sense. If you are not comfortable with the installation of audio/
video entertainment equipment, you should seek the services of a qualied installation professional or call
us for help.
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT USE THE FUSION FLEX
AMPLIFIER NEAR WATER OR IN WET LOCATIONS, DO NOT EXPOSE IT TO RAIN OR MOISTURE, DO NOT
EXPOSE IT TO DRIPPING OR SPLASHING FROM OTHER SOURCES, AND ENSURE THAT NO OBJECTS
FILLED WITH LIQUIDS SUCH AS VASES ARE PLACED ON IT. DOING SO MAY RESULT IN DAMAGE TO
THE UNIT AND THE RISK OF ELECTRIC SHOCK, WHICH MAY RESULT IN BODILY INJURY OR DEATH.
WARNING: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE THE COVER FROM THE
FUSION FLEX AMPLIFIER. THERE ARE NO USERSERVICEABLE PARTS INSIDE THE UNIT. REFER ALL
SERVICE TO QUALIFIED SERVICE PERSONNEL.
Do not install the Fusion Flex Amplier near or above any heat sources such as radiators, heating vents, or
other apparatus that produce heat. Do not block any ventilation openings or heat sinks. Avoid installing
the unit directly above other heat-producing equipment unless sucient ventilation or forced-air cooling is
provided.
Do not install the Fusion Flex Amplier in locations without proper ventilation. The Fusion Flex Amplier
should not be operated on a bed, sofa, rug, or similar surface that may block vents. The unit should not be
installed in an enclosed location such as a bookcase, cabinet, or closed equipment rack unless sucient
forced-air ventilation is provided.
Always install your Fusion Flex Amplier according to the manufacturer’s instructions and only use
attachments or accessories specied by the manufacturer.
Do not install the Fusion Flex Amplier on any stand, shelf, or other piece of furniture that is unable to
support its weight. If a cart is used to move the unit, use caution to avoid injury from tip-over.
Connect the Fusion Flex Amplier only to power sources of the correct voltage (as shown in this manual
and on the Fusion Flex Amplier unit).
Protect power supply cables from being pinched, walked on, or otherwise damaged. Be especially careful
where the power cable enters the power outlet and the unit.
Only connect the Fusion Flex Amplier to an electrical outlet or extension cord of appropriate type and
rating.
DO NOT defeat the safety purpose of a grounding or polarized plug by removing ground pins or using
unsafe adapters. A polarized plug has two blades - one wider than the other. A grounding plug has a
third ground prong in addition to the two main conductors. The wide blade or third groundling prong is
provided for your safety. If the provided plug does not t your outlet, consult an electrician to replace your
obsolete outlet. If you replace the power cord, only use one of similar type and equal or greater current
rating.
!

The power cable for the Fusion Flex Amplier should be unplugged from the outlet during severe electrical
storms, or when unused for a long period of time.
Only replace the fuse(s) in the Fusion Flex Amplier with fuse(s) of proper value and voltage rating.
The Fusion Flex Amplier should only be cleaned as directed in the Manual. Avoid spraying liquids directly onto
the unit and NEVER spray liquids into the vents. Care should be taken so that small objects do not fall into the
inside of the unit.
You should seek service for your Fusion Flex Amplier by qualied service personnel if any of the following occur:
1. The power-supply cord or the plug has been damaged.
2. Objects or liquid have fallen or spilled into the vents.
3. The unit has been exposed to rain.
4. The unit exhibits a marked change in performance.
5. The unit has been dropped, or its enclosure or chassis is damaged.
NOTE: TO COMPLETELY DISCONNECT THE FUSION FLEX AMPLIFIER FROM THE AC POWER MAINS, DISCONNECT
THE AC POWER CORD FROM THE AC RECEPTACLE.
NOTE: THE POWER CORD ON THE FUSION FLEX AMPLIFIER MUST REMAIN READILY ACCESSIBLE AT ALL TIMES.
!
CAUTION
CAUTION: TO REDUCE THE RISK
OF ELECTRICAL SHOCK, DO
NOT REMOVE COVER. NO USER
SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL.

Page 1
Fusion Flex Amplier
Contents
Important Safety Precautions and Explanation of Symbols
Introduction .......................................................................................................................3
About This Manual...........................................................................................................4
Features ...............................................................................................................................5
Unpacking...........................................................................................................................6
Fusion Flex Amplier Front Panel...............................................................................7
Fusion Flex Amplier Remote Control......................................................................8
Fusion Flex Amplier Rear Panel.................................................................................9
Inputs and Outputs ...................................................................................................... 11
Installation Tips .............................................................................................................. 12
Conguration.................................................................................................................. 13
Operation ......................................................................................................................... 14
Care and Maintenance ................................................................................................ 16
Performance Specications....................................................................................... 17
Troubleshooting ............................................................................................................ 18
Emotiva Audio Corporation Five-Year Limited Warranty ................................ 19
Notes.................................................................................................................................. 21
Emotiva Fusion Flex Amplier
DN----------VOLUME----------UP
1------------AUTO------------2
STANDBY
FLEX

Page 2
Fusion Flex Amplier

Page 3
Fusion Flex Amplier
Introduction
The Fusion Flex Amplier oers a combination of sound quality and features far above what you might
expect from a “little amplier”. With its beefy toroidal transformer power supply, and classic short signal
path, Class A/B output topology, the Fusion Flex Amp delivers true audiophile quality sound, even into
dicult loads. However, what really sets the Fusion Flex Amp apart from the pack is the wide variety
of convenience and automation features that make it the go-to amp for high quality zone amp and
remote applications.
Dual line level inputs let you connect two separate audio sources; and you can switch between them
using the front panel controls, or the remote control, or the IR and RS-232 remote control inputs, or
you can even set the Fusion Flex Amp to switch to the active input automatically. You can turn the
Fusion Flex Amp on manually, or by remote control, or using the standard trigger input, or it can be
set to switch on automatically when it senses an audio signal. The digitally controlled analog volume
control oers precise control, near perfect channel tracking, and very low noise and distortion; you can
operate it from the front panel or any of the remote control options, and a row of LEDs let you see what
level your Volume is set to from across the room. You can also use the buered Loop Outputs to chain
to another Fusion Flex Amp to easily support more channels, or another zone. The Fusion Flex Amp
can be run from any standard 115 VAC or 230 VAC power line, and doesn’t have any noisy fans to annoy
you - and, with its diminutive size, the Fusion Flex Amp is easy to t into most cabinets or racks.
The Fusion Flex Amp really is the perfect solution – whether you simply need a high quality integrated
amplier for a small bedroom or oce system, or you need a fully featured zone amp that can provide
excellent sound quality, and easy integration with your other remote control and audio systems.
The Fusion Flex Amplier…. exible power.
Enjoy
The Emotiva Team

Page 4
Fusion Flex Amplier
About This Manual
This User Manual will provide you with the information you need to get started enjoying your
Fusion Flex Amplier.
We suggest that you read through the entire manual; we kept things as short and direct as
possible. Even if you’re an expert user, you will probably nd some interesting information and
useful suggestions.
You may wish to keep a copy of this manual with your records, and record serial numbers or other
purchase information on the Notes page at the back.

Page 5
Fusion Flex Amplier
Features
The Fusion Flex Amplier combines enough audiophile-quality power to drive a pair of
loudspeakers to satisfying levels in a small high quality stereo system with a wide selection of
features that make it ideally suited for use in second-zone and remote control applications.
Some of the features oered by the Fusion Flex Amplier:
• 50 watts per channel of quiet, low distortion, audiophile quality class A/B power into 8 ohms
(75 watts into 4 ohms).
• Massive toroidal power supply for plenty of power to drive dicult loads.
• Full sized heavy duty ve-way binding post speaker terminals.
• Digitally controlled analog volume control for precisely repeatable control and superb
channel tracking.
• Two stereo inputs with manual or automatic input switching.
• Manual, triggered, or automatic power switching.
• Includes a full function IR remote control and wired IR and RS-232 remote control inputs for
the ultimate in exibility.
• Convection cooled; no fans.
• Low prole (3” high) “half-sized” unit.
• Two Fusion Flex Ampliers can be mounted side by side in a single 2 RU rack space with the
optional dual rack mount kit.
• Loop output for easy daisy chaining of multiple units.
• Automatic turn-on and input selection options make the Fusion Flex Amp perfect for a
second zone or remote location.
• User selectable AC line voltage; 115 VAC or 230 VAC.
You can nd more information about the Emotiva Fusion Flex Amplier on our website at
www.emotiva.com.

Page 6
Fusion Flex Amplier
Unpacking
Your Fusion Flex Amplier was carefully packed and should reach you in perfect condition. If
you notice any shipping damage or other issues when you unpack it, please contact Emotiva
immediately.
Gently remove your Fusion Flex Amplier from the packing carton and remove all wrappings and
shipping material.
It is important to save the box and all packing materials in case your power amp ever needs to be
moved or shipped back to the factory for service.
We truly value customer feedback and would like to hear from you.
In The Box
• Emotiva Fusion Flex Amplier
• Remote Control (with battery)
• Power cable
• Trigger cable
• (2) spare fuses

Page 7
Fusion Flex Amplier
Fusion Flex Amplier Front Panel
1. Standby Button
Switches (toggles) the unit between Standby and On.
2. Standby LED
Illuminates red for Standby; blue for On, ashing red for a Fault condition.
3. Infrared Detector Window
Used by the infrared remote control.
4. Input Selector Pushbuttons and Input LEDs
Pressing 1 or 2 manually selects that input; pressing Auto instructs the Fusion Flex Amp to use
whichever input has active audio signal on it. (If both inputs are active, Input 1 has priority.) When
each input / mode is selected, the corresponding LED will illuminate.
6. Volume LEDs (8)
These LEDs indicate the approximate volume setting.
Note: The Volume on the Fusion Flex Amp can be set in very small increments; the
LEDs only show an approximation of the current setting.
5. Volume Up and Volume Down Pushbuttons
Press and hold either button to increase or decrease volume gradually.
DN----------VOLUME ----------UP
1------------AUTO------------2
STANDBY
FLEX
1 32 4
5
6

Page 8
Fusion Flex Amplier
Fusion Flex Amplier Remote Control
FLEX
MUTE AUTO
STANDBY
VOL+
VOL-
INPUT 1 INPUT 2
The Fusion Flex Amplier includes an infrared remote
control that duplicates most of the front panel controls, and
adds some additional functionality.
1. Standby Button
Switches (toggles) the unit between Standby and On.
2. Volume Up and Volume Down
Press and hold the top or bottom of the control ring to
increase or decrease volume gradually.
3. Input Selector and Auto Button
Pressing 1 or 2 manually selects that input; pressing the
Auto Button instructs the Fusion Flex Amp to use whichever
input has active audio signal on it. (If both inputs are active,
Input 1 has priority.) When each input / mode is selected,
the corresponding front panel LED will illuminate.
4. Mute
Switches the Mute function On. The Volume LEDs will all
extinguish when the Fusion Flex Amp is muted. Pressing the
Mute button again, or pressing either Volume button, will
return the Fusion Flex Amp to its previously set Volume.
Note: The Volume Lockout feature cannot be
activated using the remote control; it can ONLY
be activated and deactivated using the front panel
Input 1 Button.

Page 9
Fusion Flex Amplier
Fusion Flex Amplier Rear Panel
1, 2. Inputs (one stereo pair for each input; unbalanced)
Connect your line level inputs to these.
3. Outputs (one stereo pair; unbalanced)
Stereo pass through output carries the selected input signal for chaining other devices.
4. Speaker Outputs
Heavy duty binding posts accept bare wires, spade lugs, and banana plugs.
5. Power Switch
Switches the AC mains power to the Fusion Flex Amplier On and O. When this switch is O, the
Fusion Flex Amplier will not respond to trigger signals or manual controls.
6. Input Voltage Selector Switch
Always ensure that this switch is set for the proper line voltage for your area and installation.
+ LEFT - + RIGHT -
RS-232 CONTROL
INPUT 1 INPUT 2 OUTPUT
SPEAKER OUTPUTS
TRIGGER
IN
IR
IN
ON
OFF
AUTO
ON OFF
POWER
115
L
R
1 2 3 4 5 6
7 8 9 10 11
FUSION
FLEX POWER

Page 10
Fusion Flex Amplier
7. RS-232 Serial Remote Control Interface
Accepts RS-232 control codes from a wired serial remote control.
8. Trigger Input
The Trigger Input is used to allow other trigger-enabled equipment to switch the Fusion Flex
Amplier between On and Standby.
9. IR Input.
Connect an external IR sensor to this input if the Fusion Flex Amplier is mounted such that IR
remote control signals cannot reach the front panel directly.
10. Power Mode Switch.
Selects between regular, triggered, and auto-on power modes.
Refer to the Installation Tips and Conguration sections for details.
11. Standard IEC Power Inlet.
The Fusion Flex Amplier requires a standard IEC C7/C8 (2.5A two wire) power cable.

Page 11
Fusion Flex Amplier
Inputs and Outputs
Analog inputs:
2 inputs; each one stereo pair of unbalanced (RCA) inputs.
Analog (line level) outputs:
1 output; one stereo pair of unbalanced (RCA) outputs .
Input sensitivity (for full output into 8 ohms):
600 mV
Speaker outputs:
Heavy duty audiophile quality ve way binding posts.
Minimum recommended load impedance:
4 ohms (one 4 ohm load or two paralleled 8 ohm loads per channel)
Trigger and control:
Trigger Input (mono 1/8”).
IR input (optical); window on front panel next to Standby switch.
IR Input (electrical; mono 1/8”); on rear panel next to Trigger Input.
RS-232 serial input/output; on rear panel (9 pin d-connector; female).
Front panel controls and indicators:
Standby; (large push button); toggles Standby mode.
Standby LED (1); red for Standby mode; blue for normal operation; red for fault.
Input; pushbuttons; (1, 2, auto); select input / mode; Input LEDs indicate active input.
Volume Up, Volume Dn; pushbuttons; Volume LEDs (8); indicate approximate volume setting.
Rear panel controls and indicators:
Power (rocker switch); switches mains power.
Input Voltage (protected slide switch); selects 115 or 230 VAC line voltage.
Power Mode toggle switch (On / O / Triggered).
Remote control:
Includes full-function IR remote control; inputs for IR remote control and RS-232 serial control.
AC power input:
IEC C7/C8 (2.5A two wire) type inlet and power cord.

Page 12
Fusion Flex Amplier
Installation Tips
Input Switching
The Fusion FLex Amplier has two separate stereo inputs. Explicitly choosing either Input 1 or
Input 2 (by either the front panel buttons, the IR remote, or the RS-232 remote) selects that input
as the signal source; choosing Auto as the signal source instructs the Fusion Flex Amp to use
whichever input signal is active; if Auto is selected, Input 1 has priority over Input 2 if both inputs
are receiving signal. If only a single input is to be used, Input 1 should always be chosen to assure
optimum performance.
Auto Power Mode
When the rear panel Power switch is set to On, and Power Mode is set to Auto, the Fusion Flex
Amplier will switch On when signal is detected at either input (regardless of which input is
selected as the signal source).
Volume and Input Setting Persistence
When the Fusion Flex Amplier is powered On from a full shutdown, or returned to operating
mode from Standby, the Volume level and Input selection will return to the settings in eect when
the Fusion Flex Amp was shut down.
Volume Lockout
The Fusion Flex Amplier has a special user Volume control lockout feature. This feature is
engaged by pressing the front panel Input 1 button and holding it for approximately 3 seconds.
THIS LOCKOUT MODE WILL REMAIN IN EFFECT EVEN IF THE FUSION FLEX AMP IS SET INTO
STANDBY MODE OR POWERED OFF AND ON AGAIN. The lockout mode is disengaged by again
pressing the front panel Input 1 button and holding it for approximately 3 seconds.
When the lockout mode is engaged, the front panel Volume controls and the IR Volume control
are disabled; the RS-232 Volume control functions will still operate normally. (This is not a Mute
function; the Volume remains set as it was when the lockout was initiated.) When the Input
1 button is pressed to engage the lockout mode, the Input selection will also switch to Input
1. Since the Input selection controls are not locked out, Input 2 or Auto may be re-selected
afterwards.
Ventilation and cooling
Even though the Fusion Flex Amp is quite ecient, it still produces some heat; to avoid
overheating, be sure to provide adequate clearance and ventilation, and do not block the vents.
Overheating adversely aects performance and shortens component life. We suggest locating
components that produce the most heat towards the top of your rack if practical, and leaving at
least 1U (1.75”) of rack space between components. Space between components can be left open
for ventilation, lled with a spacer, or used to house a forced-air cooling solution.

Page 13
Fusion Flex Amplier
Conguration
Operating Voltage
Verify that the EFusion Flex Amplier is congured for the correct operating voltage for your area.
(Voltage is set via the AC Input switch on the rear panel of the Fusion Flex Amp).
Power Mode
The way in which the Fusion FLex Amplier responds to the Trigger Input, audio signals, and the
front panel Standby switch is determined by the setting of the Power Mode switch (the small bat
switch on the rear panel below the speaker outputs, to the right of the Trigger and IR Inputs).
When the rear panel Power rocker switch is set to O, the Fusion Flex Amp is powered completely
o and will not respond to any other control, switch setting, or input. In order for the Fusion Flex
Amp to operate as described below, the rear panel Power rocker switch must be set to On.
• When the Power Mode switch is set to On, the Fusion Flex Amp is controlled by the front
panel Standby switch, which toggles between Standby and operating (On) modes each time
it is pressed.
• When the Power Mode switch is set to Auto, the Fusion Flex Amp is controlled by audio input;
the Fusion Flex Amp switches On when there is audio signal present at any of the inputs (this
will occur even when audio arrives at an input which is not assigned as a source); the Fusion
Flex Amp will return to Standby mode about fteen minutes after audio input signal is no
longer present.
• When the Power Mode is set to O, the Fusion Flex Amp will switch On when a trigger signal
is received, and will return to Standby mode when the trigger signal is no longer present.
Remote Control
The Fusion Flex Amp responds to certain remote control commands (including the Power On
command) when in Standby mode. The rear panel Power rocker switch is a manual, mechanical
switch; when it is set to O, the Fusion Flex Amp is powered completely o and will not respond
to any remote control commands. The remote control Power O commands (and the Standby
button) return the Fusion Flex Amp to Standby, but do not remove all AC mains power (the
remote control receivers remain powered on).

Page 14
Fusion Flex Amplier
Operation
Turning on the AC power
The AC mains power on the Fusion Flex Amplier is controlled by the Power rocker switch located
on the rear panel above the power cable. When the AC mains power is O, the Fusion Flex Amp
will not respond to any command (but it will remember Volume and Input settings.) Once the
AC power is turned on, the Fusion Flex Amp will remain in Standby mode until:
• the Standby push button on the front panel is pressed.
• the Trigger Input is asserted (if the Power Mode switch is in Trigger mode).
• audio signal is sensed at an input (if the Power Mode switch is in Auto mode).
• the Standby button on the IR remote is pressed
(or the code is received from a compatible control).
• the Power On command is received from an RS-232 serial device.
The PA 2-50 will then remain On until:
• the Standby push button on the front panel is pressed again.
• the Trigger Input is dropped (if the Power Mode switch is in Trigger mode).
• audio signal is no longer sensed at an input - after a short delay
(if the Power Mode switch is in Auto mode).
• the Standby button on the IR remote is pressed
(or the code is received from a compatible control)
• the Power O command is received from an RS-232 serial device.
The Power Mode switch is the small bat switch on the rear panel labelled “On/Auto/Trigger”.
Status Indicators
When the Fusion Flex Amp is in Standby mode, the single LED next to the front panel Standby
switch will be lit red; when the Fusion Flex Amp is On, the LED will be lit blue; if a fault occurs, the
LED will ash red (and all other LEDs will be o).
Selecting an Input
To select in input using the front panel controls, press one of the Input Selector buttons
(1, 2, or Auto). Pressing 1 or 2 directly selects that input; pressing Auto congures the Fusion
Flex Amp to use whichever input is active. If both inputs have audio signal on them, Input 1
takes priority and will be selected. If only a single input is to used, it should be Input 1. The same
input commands may be received via the included IR remote control, a programmable IR remote
congured with the correct codes, or a remote control device connected to the RS-232 serial port
on the rear panel of the Fusion Flex Amp.

Page 15
Fusion Flex Amplier
Volume Control
To control the volume of the Fusion Flex Amp from the front panel or the IR remote control, press
or press and hold the Volume Up or Volume Dn button. The level will increase or decrease by
a very small increment each time the button is pressed, and move smoothly up or down if the
appropriate button is held down. When under the control of an RS-232 serial controller, the level
may be either moved up or down, or set to an explicit level (explicit levels are expressed as a
negative value, with 0 being full volume and 80 being minimum volume).
Note: The Volume LEDs only indicate the approximate Volume setting; the actual
actual Volume control operates in much ner increments than the LEDs indicate.

Page 16
Fusion Flex Amplier
Care and Maintenance
Periodic Maintenance
Your Fusion Flex Amplier requires no periodic maintenance or calibration.
Cleaning your Fusion Flex Amplier
• If necessary, the Fusion Flex Amp should be cleaned gently with a soft rag.
• If something sticky gets on the front panel or case of the Fusion Flex Amp, it should be
cleaned with a mild cleaning solution applied to a soft rag, followed by wiping with a clean
rag dampened with plain water and drying with a soft dry rag or cloth.
Note: DO NOT spray water or cleaning solution directly onto the Fusion Flex Amp or
into the vents.