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Note: For speaker level operation, connect
the LS720P just like an ordinary speaker
along with the full-range loudspeakers. Set
the Input Level switch to Speaker if the signal
is coming directly from a power amplifier,
'powered' mixer, or other powered source.
If the LS720P is receiving the signal from
a non-powered mixer, a line-level signal
processor (as in an equalizer) or another
line-level source, set the input switch to Line.
The LS720P may be plugged in before or after
the full-range loudspeaker. The LS720P does
not alter the signal to the daisy-chained (thru)
loudspeakers and will not draw any power from
the host amplifier/processor driving them. Also,
note that an external crossover is not necessary
when using the LS720P .
Note: As well as accommodating full-range
loudspeakers, the Thru jacks allow many
LS720Ps to be connected in a string (parallel).
There is no practical limit to the number of
LS720Ps that may be connected together
(even greater than 30).
At high power levels when the limiter is operating, increasing the subwoofer level control will not
increase the output. Do not increase the setting while operating at high levels.
Note: The LS720P's built-in stand mounting adapter can be used with the Yorkville SW-Teletube accessory to support
our E160 cabinets. The support tube can be adjusted up to its full 5-foot 4-inch extension safely
as long as the LS720P is NOT inclined more that 10° (10-degrees).
All manuals and user guides at all-guides.com
POWER
LIMIT
LS720P LEVEL
HF
ROLLOFF
0
POWER
LIMIT
dB
Hz
6
90
00
LS720P LEVEL
HF
ROLLOFF
0
INPUT SELECT
LINE
dB
Hz
6
90
00
INPUT SELECT
LINE
P
A
INPUT A
R
A
INPUT
A
P
L
A
INPUT A
L
R
A
INPUT
E
A
L
L
L
E
L
THRU A
THRU A
THRU A
THRU A
WARNING: Larger or heavier cabinets should NOT be used!
6. Protection
The LS720P has circuitry to prevent clipping,
over current and over excursion. At high levels
the limiter will limit the gain of the LS720P and
hence if the user attempts to set the subwoofer
level control at a high level, the resulting setting
will be incorrect. The level control should be set
while operating at low levels (under 10 watts).
Note: If the level control is set too high, due to
high operating levels there will be excessive
bass when operating at lower levels possibly
causing low frequency feedback.
7. NX Link Outputs (NX Series
Full-Range Loudspeakers)
Many of the NX powered loudspeakers have a
link output. The LS720P may be driven from this
output. This allows the internal mixer to be used
while still driving the LS720P powered subwoofer.
CLIP
BOOST
FREQUENCY
CLIP
Hz
150
45
90
BOOST
FREQUENCY
SPKR
Hz
150
45
90
SPKR
P
A
R
B
INPUT
A
P
L
A
L
R
B
INPUT
A
E
L
L
L
E
L
THRU B
THRU B
A-Z552B / 1v0
A-Z552B / 1v0
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