Download LP-1500 series

1500. Do not connect the 1500 to the output of a power amplifier, a signal large enough to drive a
loudspeaker could damage the LP-1500.
Set the rate control on the front of the console to the fully counter-clockwise position. This enables
the audio trigger, and lights the yellow led next to the rate knob to indicate this. Each time the audio
signal reaches a level high enough to trigger the chase, the yellow Step led on the chaser will blink.
A small control knob marked “audio gain” on the back of the console can be adjusted to trigger the
chaser at the desired volume level.
In addition to the gain adjustment on the back of the board, a menu setting of the chase controls can
help get the best results with the audio input. Press the Chase menu button, and rotate the data
wheel to the right until this display is seen:
Audio Trigger
Mask = 0.00 S
This trigger mask is used to keep the chaser from triggering too many times from one large audio
signal. The value for the mask indicated how quickly a second trigger will be allowed. To change
the value, hold the Modify button down and turn the data wheel. As an example, a display of 0.25 S
would mean that a second trigger would be at least .25 seconds after the first.
The audio feed can come from any source, but certain signals lend themselves better to being used
as a trigger. A feed from a drum machine or a mixer output that contains a kick drum or snare will
work well to give a regular, rhythmic trigger for the chaser.
7.7 Linking Chases to Scenes
The LP-1500 can easily manage what is a challenge for a board operator; doing two things at once.
The 1500 can be set to bring up a scene, and turn on (or off) the chaser at the same time. There
are two ways to go about it.
If a scene, either a Preset Master or a Cue Stack step, is recorded with the chaser running, the
scene will play back with the same chase. So, simply turn on the chase you wish to see as you
record the scene.
Scenes that have already been recorded can have a chase attached later. For our example, let’s
attach chase 2 to Cue Stack scene 12.
While in Run mode, press the Stack menu button below the display. Turn the data wheel to the right
until you see:
Now 0 Chase
NXT 1
0
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