FUNDAMENTAL ACOUSTIC RESEARCH LBE 18 A User manual

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OWNER’S MANUAL
OWNERS MANUAL LBE 18 A

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Thank you for choosing the FAR LBE 18 A subwoofer.
In order to obtain the best performance from this active
subwoofer, please be sure to read this owner’s manual
and use your speaker only in accordance with its
instruction.
CONTENTS
• Applications 2
• Installation 3
• Technical description 4
• Technical drawing 6
• Fine frequency tuning 7
• Limiter function 8
• Rear panel level 8
• Troubleshooting 9
LBE 18 A
Applications
Video and film post production
Music industry
All mid field and far field applications

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Thank you for choosing a FAR active subwoofer. This unit
is an exceptional product that will give you years of superb
performance.
Do Not Open The Cabinet.
Do not attempt to service this unit. Tampering with internal
components can cause fire or shock, and may void your
guarantee. If water or small objets enter the unit, unplug
the power cord immediately and consult an authorized
FAR dealer. Using the unit under such condition may
cause a fire or shock hazard.
Installation
Mains
Attach the plug to the IEC socket. And connect it to the
mains.
A green LED on front face indicates when the power is
switched on.
Signal
The input signal is available in XRL or Jack plugs, both
are electronically symmetric inputs.
The link functions the same as both of the inputs. Use the
link to connect one speaker to another
pins connections
• Maximum length of the link cables
symmetric :15 meters
asymmetric : 8 meters
• Maximum linked LBE 18 A ’s : 4

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TECHNICAL DESCRIPTION
LBE 18 A
Sensitivity dB SPL
Maximum pressure level (Cabinets @ 1 m) 126
Frequency Range Hz
± 3 dB 20-80 / 120
Active filter
Low pass section
Crossover frequency 80/120 Hz 24 dB/Octave
Limiter (on/off) +2dB
Components
Woofer 46 cm/18 inch
Amplifier Specifications
Power W
Peak Power 750
Nominal Power 500

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Characteristics
Power bandwidth 20 - 25000 Hz
Slew rate 35 V/µs
SN ratio > 100 dB
Distortion
Intermodulation 0,01%
Total 0,05%
Input
Sensitivity 0 dB
Impedance > 10 kOhm
Connectors
Input (symmetric) XLR & Jack
Link XLR
Remote RJ-45
External dimensions mm
Height 900
Width 550
Depth 530
Weight kg 85

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TECHNICAL DRAWING
LEGEND
1. Main level tuning
2. Limiter function
3. Link
4. Input XLR
5. Frequency adjustment
6. Cooling system
7. Mains
8. Power
9. Phase adjustment
10.Input/output for level remote control

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FINE FREQUENCY TUNING
For maximum efficiency use the switches on the rear
panel. One for the phase adjustment (Figure 1) and one
for the frequency adjustment (Figure 2).
Phase adjustment
The switch can be set to one of the two positions for an
optimum placement in your room.
Positions available: 0-180°.
Figure 1 : phase adjustment
Frequency adjustment
The switch can be set to one of the two positions for an
optimum placement in your room.
Positions available : 80-120 Hz.
Figure 2: frequency adjustment

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Limiter function
The LBE 18 A has a built in limiter developed to protect
the drivers against harmful signals. The limiter acts
directly on the input signal by decreasing it when it
reaches the clipping level.
To activate the limiter turn it to the on or off position using
the dip switch on the rear panel.
Figure 3: limiter switch
The overload LED indicates whether or not the limiter is in
operation.
LED comes :
• Red when the limiter is not in use.
• Orange when the limiter is in use.
Rear panel level.
Adjust the sound level by turning the main level knob to
the desired position.
The range of tuning is from 0 (maximum attenuation) to
max (no attenuation).
Adjust the knob (Figure2) to the necessary to attain a
perfect stereo image.
Figure 2 : main level control

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TROUBLESHOOTING
This section is designed to trouble free technical operation. Most of the problems encountered by the users are due to operating mistakes .Please
check this list first for a possible solution. If the problem persists, consult your local FAR distributor or EMAIL to : [email protected]
Your problem is Make sure that
No light comes on when the power cord is
plugged into AC outlet.
• The unit is plugged into a live outlet
No sound is heard • That the level control at the rear is not turned to the minimum
• That the remote control is plugged in the right way
• That your audio connection is properly done
• That the remote control is not on mute position or – 80 dB position.
Sound is heard stronger from one side. • That the remote control is not on one side only
• That both level controls on the rear are correctly turned on the same
position.
When listening to stereo the left and right
sounds are reversed
• That left and right wires are connected the same way
When listening to surround (more than 12
surround both sides) the sound is less powerful
• That the link connection between each speaker is properly done
• That you didn’t connect more than six speakers on the link connector.
Too much low frequencies • That you have checked the low frequency deep switches adjustments
• That the position of your speakers is not too close to the corners
Not enough low frequencies • .That your connections are not out of phase.
• That you have checked the low frequency deep switches adjustments