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CHOOSING AN AMPLIFIER:
The LX-18 includes (2) 1/4” phone jacks
and one Neutrik NL4 Speakon input ter-
minals. All three terminals are internally
connected in parallel. Each of the three
connections can be used as an input or
as an output.
1. Neutrik NL4 Terminal
2. 1/4” Phone Jacks
2
1
1/4” Phone Jack Wiring
NEUTRIK CONNECTOR
Pin 1 +............Subwoofer + (input or output)
Pin 1 - ............Subwoofer - (input or output)
Pin 2 +............Subwoofer + (input or output)
Pin 2 - ............Subwoofer - (input or output)
mportant: When connecting a speaker to an amplifier or when connecting two speakers together, it
s important to match the polarity (+/-). Connect positive-to-positive and negative-to negative.
For optimal performance, it is extremely important that an elec-
tronic crossover be used in the audio system. An electronic
crossover will provide a low-pass output allowing the LX-18 to only
play low frequencies. B-52 recommends setting your low-pass
crossover filter between 80 to 120 Hz, depending upon the venue
and sound desired. In case of doubt, set the low-pass crossover to
100 Hz.
It is highly recommended to use an electronic crossover with
24 dB per octave slopes or higher. If your amplifier or electronic
crossover provides a 30 Hz subsonic filter, make sure this filter is
turned ON. The subsonic filter will prevent the subwoofer from
reproducing frequencies below 30 Hz. At high SPL, frequencies
lower than 30 Hz can damage to the subwoofer.
USING AN ELECTRONIC CROSSOVER
LX-18 CONNECTION DIAGRAMS
STEREO CONNECTION
MIXER
ELECTRONIC CROSSOVER
LOW PASS OUTPUTS
L
AMPLIFIER
R
L
R
L
R
LX-18
LX-18
MIXER
ELECTRONIC CROSSOVER
LOW PASS OUTPUTS
L
R
BRIDGED CONNECTION
AMPLIFIER
BRIDGED OUTPUT
L or R Out
LX-18
LX-18
Connecting two LX-18 subwoofers in
parallel results in a 4 ohm load.
There are numerous other configurations available.
Please consult your Authorized B-52 Dealer or
contact B-52’s Customer Service.
STEREO OUTPUT
1) It is important to choose an amplifier that matches the power
rating of the LX-18 (see specifications on back page).
2) When using TWO (2) LX-18 subwoofers in you system you may
choose an amplifier that delivers up to 750 watts @ 8 ohm
stereo or an amplifier that delivers up to 1500 watts @ 4 ohm
bridge (when connecting two LX-18 in parallel). Other combina-
tions are possible– –consult your authorized dealer or call B-52
for additional details. See Connection Diagram (right) for details.
3) Use caution when using large amplifiers. All amplifiers are capa-
ble of putting out much more power than they rated for. The
amplifiers rating is specified as undistorted output (low
THD– – total harmonic distortion). Amplifiers are capable of pro-
ducing much greater power that they are rated for when driven
into clipping.
4) Under powering the LX-18 may also damage the subwoofer.
Using a small amplifier and clipping its high output signal could
damage the subwoofer. Clipping the amplifier may distort the
signal and cause over heating of the voice coil.
CONNECTORS:
(Amp must be stable at 4
ohms in the BRIDGE mode)