One Systems POPS SUBa - Manual (Page 15)

USING THE POPSSub (Application and Trouble-Shooting Tips)
POPSSub is a high-quality professional sound reinforcement system designed
for use in both direct weather outdoor applications as well as high ambient noise
indoor applications. The POPSSub is designed to be used with the POPS15.
Some basic precautions will insure long-term reliability.
INSURE THAT THE POPSSub IS PLACED ON LEVEL GROUND THAT IS
CAPABLE OF SUPPORTING THE WEIGHT OF BOTH THE POPSSub AND
THE TOP POLE-MOUNTED ENCLOSURE .
FAILURE TO INSURE A FLAT SURFACE THAT IS CAPABLE OF
SUPPORTING THE ENTIRE WEIGHT OF THE POPSSub AND POPS15 MAY
RESULT IN INJURY AND PROPERTY DAMAGE!
GAIN
POPSSub has an external gain control designed to match the subwoofer’s
acoustic output with the POPS15. Care should be exercised when setting this
gain level to insure that the overall system gain structure is below the system’s
electronic overload (below clipping levels).
The optimal “starting” point of the POPSSub’s gain function is at the 50% rotation
position. (half-way between the rotation extremes of the gain function control)
In this position, adding the POPSSub’s output to the output of the POPS15 will
increase the low-frequency output at 50 Hz by 6 dB and over 8 dB at 40 Hz.
Increasing the gain control to max will produce approximately another 4 dB of
output from the 50% position.
Rotating the gain in the counter clockwise direction from the 50% position will
rapidly reduce the gain of the POPSSub.
The output gain of the mixing console should be set at a low level and then the
gain of the POPSSub should be set to the desired level to achieve the required
overall system acoustic response.
Then the gain of the mixing console should be increased to achieve the desired
output levels. If any distortion or clipping is detected, the gain of either the mixing
console output or the gain of the POPS Sub should be reduced.
The POPSSub’s gain control location is shown in the picture below: