Parametric (1) Yes Yes Yes No
Low Shelf (2) No Yes Yes Yes
High Shelf (3) No Yes Yes Yes
Lowpass (4) No Yes No No
Highpass (5) No Yes No No
Linkwitz-Riley Lowpass (6) No Yes No Yes
Linkwitz-Riley Highpass (7) No Yes No Yes
When a parameter is invalid for a given filter type, the parametric EQ commands will still set that 
parameter, however its value will not be used for filter computations. This valid/invalid parameter 
information above is provided mainly as guidelines for programmers writing control software for the 
Vortex. If a parameter is not valid for a specific filter type, then the control for editing that parameter 
should be disabled or removed when that filter type is selected. 
This command is saved to non-volatile memory only as part of a preset. The state of this command 
will be restored after power-up only if a preset is saved and that preset is set to be the power-on 
preset. 
Example Description Status Message
S01PEQIA1,2,1,1250,40,-20,1,1
Set the 
parametric EQ on 
input 1 , band 2 
to the following 
parameters: type 
= parametric 
filter, frequency 
= 1250 Hz, 
bandwidth = 40 
1/100th octaves, 
gain = -20 dB, 
enabled = yes, 
slope = 1 dB per 
octave. The 
value of the 
slope parameter 
is irrelevant for 
this type of filter, 
we could have 
set it to 
anything. 
S01PEQIA1,2,1,1250,40,-20,1,1