Capital V
Capital V
This procedure moves three sliders to examine filter interplay. 315Hz goes up to +10dB, 500Hz stays down at -10dB from the last test and 800Hz is moved up to +10dB. It's plain as day if you look at the Audient ASP231 pictured here. The boosting you see is quite a bit more than one would typically use on monitor wedges but I figured that by examining the responses I would be able to separate unfamiliar GEQs into one of several filter classes. One thing to look for is to note the level of 500Hz on the computer screenshot. Is it higher than -10dB? Are the 315 and 800 filters pulling it upward?
The Normal and Narrow modes of the Audient are worth looking at. In the Normal mode, the 10dB targets are reduced to about 6-8dB due to filter interplay. But in the assymetric Narrow mode the wide boosts overpower the single narrow cut, bringing the 500Hz point up to about 1dB above unity.
When testing the Presonus in different modes we simply toggled the relevant switches, keeping the faders in the same positions they were in at the start in ±12dB mode. That's why you see -20dB instead of -10dB at 500Hz in +12/-24 mode.
dbx 480 - no Capital V trace stored
Rane GE 27 - no Capital V trace stored
UREI 527-A serial #167 not shown. 500Hz filter non-operational.
