Focal FLEX POWER 2120 User manual

FLEX POWER 2120
Stereo Mixer Amplifier
User manual

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Safety instructions
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 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 are 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 the 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. WARNING: To reduce the risk of re or electric shock, this apparatus should not be exposed to rain or moisture and objects lled with
liquids, such as vases, should not be placed on this apparatus.
16. To completely disconnect this equipment from the mains, disconnect the power supply cord plug from the receptacle.
17. The mains plug of the power supply cord shall remain readily operable.
18. Do not expose to dripping or splashing.

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The lightning ash with arrowhead symbol within an equilateral triangle, 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: to prevent the risk of electric shock, do not remove cover (or back). No user-serviceable parts
inside. Refer servicing to qualied service personnel.
The exclamation point within an equilateral triangle is intended to alert the user to the presence of impor-
tant operating and maintenance (servicing) instructions in the literature accompanying the product.
About this manual
This manual contains all information needed to install and use Flex Power 2120.
A sample of this product has been tested and found to comply with EU directives and other international standards following :
Electromagnetic Compatibility
EN 55103
EN 61000
Electrical Safety
EN 60065

Contents
Safety instructions
Flex power 2120
1 - Characteristics
1.1 Contents
1.2 Connectors
1.3 Dimensions
1.4 Technical specifications
2 - Installation
2.1 Front panel description
2.2 Rear panel description
2.3 Installation advice
3 - Chassis mounting
3.1 Mounting on a flat surface
3.2 Mounting in a rack
4 - Connections
4.1 Sound level remote control (VCA)
4.2 Input 1 description
4.3 Inputs 2, 3 and 4 description
4.4 Inputs 1, 2, 3 and 4 connections
4.5 ZONE 1 output connection
• stereo into 4/8 ohms
• double mono into 4/8 ohms
• stereo/double mono 100V line
• stereo/double mono 70V line
• stereo/double mono 25V line
• low and high impedance mixed connection
4.6 ZONE 2 output connection
4.7 STANDBY REMOTE connection (standby control)
5 - Setting procedure
5.1 Output level setting
5.2 Input sensitivity setting (inputs 1 to 4)
5.3 Signal and clipping diodes: inputs 1 to 4 state
5.4 Vox sensitivity and priority setting (Input 1)
5.5 Tone setting
5.6 Auxiliary Input and Boost level setting
5.7 Zone 1 and Zone 2 mixing switch
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6 - Applications
6.1 Public address in a shop
6.2 Public address in a restaurant
6.3 Public address in a bar
6.4 Public address in a meeting room
6.5 Public address in a department store
International Guarantee
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1. Characteristics:
- Exceptional sound quality: the Focal sound
- A single device for multi-purpose applications
- Simple and ergonomic
- 2x120W fully mixable stereo inputs
- Exclusive limiter and automatic level control, low risk of saturation
- Exclusive voice filter system for perfect intelligibility
- 70V/100V and 25V line output
- VCA or automatic volume control
- 2 output zones
- High efficiency, low energy consumption, silence (no fan)
- Additional auxiliary input on the front panel
1.1 Package contents
- 1 Flex Power 2120
- 1 user manual
- 1 power cable
- 1 screwdriver for adjusting potentiometers
- Two 19-inch rack mounting brackets with 4 retaining screws
- 4 rubber stands
- 1 set of 10 Euroblock connectors
1.2 Connectors
All the connectors mentioned below are supplied with Focal Flex Power 2120.
• 2-pin Euroblock connectors: for connecting the standby and priority control. (Qty: 2)
• 4-pin Euroblock connectors: for connecting the remote volume control like VCA. (Qty: 1)
• 6-pin Euroblock connector: for connecting the Zone 2 symmetric stereo line output. (Qty: 1)
• 9-pin Euroblock connectors: for connecting audio, mic, mono and stereo line inputs 1, 2, 3, 4. (Qty: 4)
• 6-pin Euroblock connector: for connecting the Zone 1 amplified audio output. (Qty: 2)
• 220V EC power cord with earth connection. (Qty: 1)
1
2
4
5
6
3
2 pin connector 4 pin connector 6 pin connector
6 pin connector 220 V Power cord
9 pin connector
3
1
5
24
6

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1.3 Dimensions
dim. 4” (101.5mm) with the original stands
dim. 33/4” (95.5mm) with the self-adhesive stands
dim. 31/2” (89.5mm)
dim. 137/8” (353mm)
dim. 1613/16” (427mm)

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1.4 Characteristics
Performance
6 pin Euroblock driver outputs
(the two working channels, at 0.05% DHT)
•
High impedance nominal power
(25V / 70V / 100V)
• Low impedance power output (4Ω/8Ω)
2x120Watts RMS
2x120Watts RMS
•
Bandwidth
40Hz - 30kHz in max. power (4/8W outputs)
Typical DHT 0.1% at 1W / <0.2% from 1W to 100W
40Hz - 22kHz (25V, 70V, 100V outputs)
•
Bass/midrange/treble adjustments
9dB @ 100Hz / 1kHz / 10kHz
Inputs
Inputs 9 pin Euroblock line
Microphone •Impedance 3kΩ
•Sensitivity 1mV
•Signal/noise ratio - 70dB
•Phantom power supply 48V/6.8kΩ
•Permanent Voice filter
Commutable Voice Boost
- 6dB@180Hz / -6dB@15kHz
+ [email protected]
•Voice priority (input 1) Response: 50ms/recovery 2.5s
Stereo balanced •Impedance 20kΩ
•Sensitivity 850mV
•Signal/Noise ratio - 90dB
Stereo unbalanced •Impedance 10kΩ
•Sensitivity 850mV
•Signal/Noise ratio - 90dB
Stereo 3.5mm jack front input •Impedance 7,5kΩ (1,5kΩ in Boost mode )
•Sensitivity 250 mV (50mV in Boost mode)
•Signal/Noise ratio - 85dB
RCA stereo Amp input •Sensitivity 1V (0dBV)
•Input impedance 10kΩ
Outputs
Balanced 6 pin Euroblock Zone 2 output •Output level 1.3V (+4dBu)
•Output impedance 680Ω
Stereo RCA Record line output •Level output 350mV (-10dBV)
•Output impedance 680Ω
Stereo RCA Pre-Out output •Level output 1V (0dBV)
•Output impedance 680Ω
4-pin Euroblock VCA control •Voltage controlled amplifier 12V output Compatible with 0 - 10V robot
Control through 10kΩ potentiometer
Power supply / Consumption •
Local supply voltage
230/115V, ± 15%, 50/60Hz
•
Consumption at max. power
300VA
•
Standby Consumption mode
< 2 Watts
•
Fuse type
1.6A (220V), 3.15A (110V)
General •
Weight
30.2lb (13.7kg)
•
Chassis dimensions (H x L x D)
31/2 x 1613/16 x 137/8” (89.5 x 427 x 353mm)
•
Conformity
CEM 89/336/EEC and 73/23/EEC
•
Temperature of use
-10 to +35°C
•
Storage temperature
-40 to 70°C

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1On/off/standby: state of Flex Power 2120
• LED green: system on
• LED off: system off
• LED amber: system on standby
2On/Off switch: to turn the system on or off.
3Signal and clipping LEDs: state of inputs 1 to 4
• LED off: no signal or volume at 0
• LED green or amber briey ashing: optimal range of use
• LED amber steady: risk of clipping and distortion
4Volume potentiometer: to set the level of inputs 1 to 4.
5Clipping LEDs: to set the level of the left and right channels
• LED off: normal
• LED amber ashing: progressive limiting
• LED amber steady: risk of clipping and distortion
6Volume potentiometer: to set the levels of output 1
7Bass, Midbass, Treble potentiometer: equalisation on output 1
8Volume potentiometer: to set the level of the auxiliary input
9Auxiliary input: auxiliary audio input 5 on 3.5 mm stereo jack
10 Auxiliary input gain selector: to increase the auxiliary input
sensitivity
11 Mono mode selector: to select stereo or mono
12 Mono LED: state of mono mode (on = mono)
13 Zone 1 selectors: to assign inputs 1 to 4 to zone 1
14 Zone 2 selectors: to assign inputs 1 to 4 to zone 2
2. Installation:
2.1 Front panel description
1
2
3 4 5 6 7
13
14
12
11
8 9
10

2.2 Description face arrière
12 3 4 5 7
910 11
6
1514
8
12
13
16
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1Mic Gain Potentiometer: microphone gain setting for inputs
1 to 4
2Dipswitch inputs 1 to 4:
• Dip 1: mic power supply 48 V On/Off
• Dip 2: mic/line selection
• Dip 3: Voice Boost speech lter On/Off
• Dip 4: Vox activation (automatic priority mode for input 1
over inputs 2, 3, 4)
3VCA: Euroblock connector for remote volume control of the
amplied Zone 1 output
4Zone 2: Euroblock connector for balanced/unbalanced
stereo line output
5Speaker Zone 1 (left): Euroblock connector for left low im-
pedance output 4-8 ohms and line output 25 V/70 V/100 V
6Line 25/70/100 V: Left channel Zone 1 line switch
7Standby remote: Euroblock connector, standby control by
contact
8115 V/220 V: mains supply voltage selector
9Power cord plug with fuse
10 Line 25/70/100 V: Right channel Zone 1 line switch
11 Speaker Zone 1 (right): Euroblock connector for right low im-
pedance output 4-8 ohms and line output 25 V/70 V/100 V
12 Record: stereo audio line output on RCA
13 Pre-Out/Amp-in: loop to insert an equalizer or audio proc-
essor on RCA
14 Input 1 to 4: 9-pin Euroblock connectors for mono mic and
stereo line inputs
15 Vox potentiometer: to set the priority Vox threshold
16 Priority: Euroblock connector for priority by contact

2.3 Installation tips
• Make sure that air circulates freely around the device. Air inlet openings are on the sides, and the hot air outlet opening is on the top. Do
not obstruct these openings. The base of Flex Power 2120 also acts as a radiator. It must never be in direct contact with the support without
using the stands.
3. Chassis mounting:
3.1 Mounting on a flat surface
Focal Flex Power 2120 mixer amplifier is factory-fitted with 4 stands. They protect the support surface and prevent the chassis from sliding
accidentally.
For mounting on a 19" rack, four self-adhesive stands are also supplied instead of the factory-fitted stands. If necessary, provide for the ventila-
tion of the rack. The following instructions must be followed (positioning tips) when choosing the location.
ok
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4. Connections
4.1 Sound level remote control (VCA)
3.2 Mounting in a rack
The chassis requires a 2 rack locations.
• Use the brackets and accessories supplied for rack mounting.
• To fix the chassis in the rack, use four screws with washers (not supplied) to avoid scratching the front panel of the brackets.
Note: Preferably choose neoprene washers as they prevent the nuts from becoming loose in case of vibrations or during transport.
Caution: To be able to transport the chassis once mounted in the rack, the rear of the chassis must be supported mechanically in the
rack.
Controller (0-10 V)
• Single VCA to control the right and left channels simultaneously (mono or stereo mode).
• Controller.
• Dual VCA to control the right and left channels independently.
VCA
VCA
VCA
R, L
R, L

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4.2 Input 1 description
The balanced (mic or line) and unbalanced (line) audio sources can be connected to the MIC/LINE INPUT 1 Euroblock terminals.
The functions are selected on DIPSWITCH 1.
•DIP A: 48V: On/Off. This function is used to connect a static microphone requiring a 48V Phantom power supply.
• DIP B: Mic/Line. This function is used to select the input 1 level for a microphone (MIC) or a music source (LINE) like CD, DVD, MP3,
computer, TUNER, satellite terminal, cassette deck, etc.
• DIP C: Voice Boost speech filter. On/Off: Activating DIP B in Mic mode automatically activates a circuit that filters signals below 180
Hz and above 15 kHz (-6 dB) to give priority to speech. The Voice Boost speech filter can be activated to enhance voice intelligibility (+ 5
dB at 3.7 kHz).
• DIP D: VOX: On/Off. Input 1 can be given priority using the automatic Vox. When a signal is detected, input 1 is given priority and all the
others are cut off (except for the auxiliary input on the front panel). To activate this function, the DIP Switch must be set to ON. The "VOX"
gain potentiometer is used to set the "Priority" input sensitivity.
4.3 Inputs 2, 3 and 4 description
The balanced (mic or line) and unbalanced (line) audio sources can be connected to the MIC/LINE INPUT 2, 3 and 4 Euroblock terminals.
The functions are selected on DIPSWITCH.
• DIP A: 48 V: On/Off. This function is used to connect a static microphone requiring a 48V Phantom power supply.
• DIP B: Mic/Line. This function is used to select the input 1 level for a microphone (MIC) or a music source (LINE) like CD, DVD, MP3,
computer, TUNER, satellite terminal, cassette deck etc.
• DIP C: Voice Boost speech filter. On/Off: Activating DIP B in Mic mode automatically activates a circuit that filters signals below 180
Hz and above 15 kHz (-6 dB) to give priority to speech. A Voice Boost speech filter can be activated to enhance voice intelligibility (+ 5 dB
at 3.7 kHz).

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4.4 Inputs 1. 2, 3 and 4 connection
XLR
2
3
1
XLR
table de
mixage
3
3
2
2
1
1
Microphone (balanced) Line (balanced)
1 2
3
1 2
3
1
1
2
CD
MD
RCA
2
RCA line (unbalanced)
4.5 ZONE 1 output connection
a. Stereo into 4/8 ohms
To activate the ZONE 1 amplification output in low impedance (4Ω /8Ω) and in stereo, proceed as follows:
1. Set the MONO selector on the front panel to OFF.
2. Set the LINE 25/70/100 V" switch to OFF position.
3. Connect the loudspeaker cables to the "4Ω/8Ω" and "" outputs of the SPEAKER ZONE 1 (Left) Euroblock terminal. Make sure the
polarity of the enclosures is correct: the "4Ω/8Ω" terminal is the positive pole to be connected to the enclosure's "+" (red) connector, the
negative " " terminal to the "-" (black) connector.
4. Repeat operations 1, 2, 3 for the "LINE 25/70/100 V" switch and the SPEAKER ZONE 1 (Right) Euroblock terminal.
+
-
+
-

b. Double mono into 4/8 ohms
To activate the ZONE 1 amplification output in low impedance (4Ω /8Ω) and in mono, proceed as follows:
1. Set the MONO selector on the front face to ON.
2. Set the "LINE 25/70/100 V" switch to OFF mode.
3. Connect the loudspeaker cables to the "4Ω/8Ω" and " " outputs of the SPEAKER ZONE 1 (Left) Euroblock terminal. Make sure the
polarity of the enclosures is correct: the "4Ω/8Ω" terminal is the positive pole to be connected to the enclosure's "+" (red) connector , the
negative " " terminal to the "-" (black) connector.
4. Repeat operations 1, 2, 3 for the "LINE 25/70/100 V" switch and the SPEAKER ZONE 1 (Right) Euroblock terminal.
+
-
+
-
Note: if 8Ω speakers are used, two speakers may be connected in parallel on each of the "4Ω/8Ω" channels. If 4Ω speakers are used, only
one speaker may be connected.
Warning: Failure to carry out the connections as shown above may lead to malfunctions and damage the
amplifier and/or the loudspeakers.
c. Stereo/double mono 100V line
To activate the ZONE 1 amplification output at 100 V, proceed as follows:
1. Set the MONO selector on the front panel to ON (double mono) or to OFF (stereo).
2. Set the "LINE 25/70/100V" switch to ON mode.
3. Connect the loudspeaker cables to the "0V" and "100 V" outputs of the SPEAKER ZONE 1 (Left) Euroblock terminal. Make sure the polar-
ity of the enclosures is correct: the "100 V"terminal is the positive pole to be connected to the enclosure's "+" (red) connector, the negative
"0 V" terminal to the "-" (black) connector.
4. Repeat operations 1, 2, 3 for the "LINE 25/70/100V" switch and the SPEAKER ZONE 1 (Right) Euroblock terminal.
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d. Stereo/double mono 70V line
To activate the ZONE 1 amplification output at 70V, proceed as follows:
1. Set the MONO selector on the front panel to ON (double mono) or OFF (stereo).
2. Set the "LINE 25/70/100V" switch to ON mode.
3. Connect the loudspeaker cables to the "0V" and "70V" outputs of the SPEAKER ZONE 1 (Left) Euroblock terminal. Make sure the polarity
of the enclosures is correct: the "70V" terminal is the positive pole to be connected to the enclosure's "+" (red) connector, the negative
"0V" terminal to the "-" (black) connector.
4. Repeat operations 1, 2, 3 for the "LINE 25/70/100V" switch and the SPEAKER ZONE 1 (Right) Euroblock terminal.
e. Stereo/double mono 25V line
To activate the ZONE 1 amplification output at 25V, proceed as follows:
1. Set the MONO selector on the front panel to ON (double mono) or OFF (stereo).
2. Set the "LINE 25/70/100V" switch to ON.
3. Connect the loudspeaker cables to the "0V" and "25V" outputs of the SPEAKER ZONE 1 (Left) Euroblock terminal. Make sure the polarity
of the enclosures is correct: the "25V" terminal is the positive pole to be connected to the enclosure's "+" (red) connector, the negative "0V"
terminal to the "-" (black) connector.
4. Repeat operations 1, 2, 3 for the "LINE 25/70/100V" switch and the SPEAKER ZONE 1 (Right) Euroblock terminal.
Warning: to avoid distortions or malfunctions, the sum of the powers distributed in the enclosures composing
the line must be less than or equal to 120 W per channel.

Warning: if an 8Ω enclosure is connected to the low impedance output, 60 Watts will be reserved for it. There
will be 60 Watts left to distribute on the high impedance output. If a 4 Ω enclosure is used, the 120 Watts will
be fully dedicated to it. There will no more power available for the line output.
+
-
+
-
+
-
+
-
4.6 ZONE 2 output connection
Connection of the ZONE 2 output.
The stereo signal of one of the four inputs can be sent to the ZONE 2 line level output connector. This output can feed a second amplifier or
another device installed in your configuration, or an amplified active subwoofer.
5 types of connections may be made on the ZONE 2 output connector:
RCA
unbalanced connectors
XLR
balanced connectors
1 2
3
1 2
3
f. Low and high impedance mixed connection
Flex Power 2120 is capable of simultaneously feeding a low impedance enclosure (4Ω/8Ω) and a set of high impedance enclosures (25V, 70V
or 100V) on a single channel.
To activate the ZONE 1 amplification output in mixed mode, proceed as follows:
1. Set the "LINE 25/70/100V" switch to ON mode.
2. Connect the loudspeaker cables to the "0V" and "25V" or "70V" or "100V" outputs and simultaneously to the "4Ω/8Ω" and
" " outputs of the SPEAKER ZONE 1 (Left) Euroblock terminal. Make sure the polarity of the enclosures is correct: the "25/70/100V" ter-
minal is the positive pole to be connected to the enclosure's "+" (red) connector, the negative "0V" terminal to the "-" (black) connector.
The negative "0V" terminal to the "-" (black) connector. The "4Ω/8Ω" terminal is the positive pole to be connected to the enclosure's "+" (red)
connector, the negative " " terminal to the "-" (black) connector.
3. Repeat this operation for the "LINE 25/70/100V" switch and the SPEAKER ZONE 1 (Right) Euroblock terminal.
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6 mm jack
balanced connectors
6 mm jack
unbalanced stereo connectors
6 mm jack
balanced connectors
R
L
4.7 STANDBY REMOTE connection (standby control)
Astandby control can be activated using a dry contact (switch) connected to the STANDBY REMOTE input. This is a safety function to cut off
the public address system in the event of an emergency or for putting the system automatically on standby, when connected to a timer (power-
saving mode with consumption lower than 2 W in standby mode).
switch

5. Setting procedure
5.1 Output level setting
1- Set the Left and Right potentiometers on the front panel to the maximum position to take full advantage of the amplifier's dynamic range.
This control can be used when the sound level is intentionally limited by the installer. The overall sound level can be modulated using the
VCA (remote volume control).
2- Flex Power 2120 has a sufficient power reserve for the amber LEDs to flash briefly.
3- If the LED remains amber too often, the limiter comes into action, and the sound can then deteriorate.
5.2 Input level setting (input 1 to 4)
Flex Power 2120 is equipped with a line preamp and a mic preamp with a wide dynamic range that must be adjusted independently.
1- Connect a standard source (like CD) and choose a high dynamic range.
2- Set the input volume (Level) on the facade of each input as desired. The LED can turn amber briefly on a very high peak level. If the LED is
regularly red (risk of saturation and sound deterioration), decrease the volume.
3- If a microphone is used, connect it to the dedicated inputs (mic).
4- Position the microphone.
5- Set the mic input sensitivity (mic gain) at the rear of the device until the desired volume is obtained. Follow the same procedure as in point 2.
5.3 Signal and clipping LEDs: state of inputs 1 to 4
• LED off: no signal or volume at 0.
• LED green or briefly flashing amber: optimal usage range.
• LED amber steady: risk of clipping and distortion. Decrease the volume.
5.4 Vox sensitivity (Input 1) and priority
1- Connect a microphone to input 1.
2- Use the microphone in real configuration: speak normally close to the microphone.
3- Increase the Vox button sensitivity on the rear panel until the Vox priority input is activated while speaking.
4- If the Vox input is activated undesirably, decrease the sensitivity.
5.5 Setting the tone
Flex Power 2120 has Bass/Mid-range/Treble tone controls to adapt the sound according to the acoustics of the room and/or the enclosures,
or according to the type of tone desired.
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