Lab.gruppen's PLM Series preset suitable for JBL's VTX S25 sub-speaker, Rel 1.2.0

Application notes:
The preset is low-passed at 80 Hz,
The filter is IIR and output 1 is front and output 2 is rear firing for cardioid.

Technical info:
* Amp Gain is 35 dB
* MaxRMS limiter threshold at +8 dBu (Sub)
* ISVPL thresholdat 177 Vpk (SUB) 
* MaxPeak limiter threshold at maximum factory value (i.e. +24 dBu-pk)
 - The ISVPL threshold corresponds to a MaxPeak limiter threshold at 
    +14 dBu-pk (SUB)
