Where/how to set low pass filter and sub sonic filter?

[Syphlyn]

I know what both these are for the first part.

My new amp has a dial for each one. (SAZ-2000D)

Low pass filter: 35hz-300hz

Sub Sonic: 10hz-60hz.

I'll be setting my low pass at 60hz-80hz

Should my sub sonic be set at half an octave below tuning. Box is tuned to 32 hz so I should set sub sonic @ 24?

Now for the tricky part. With the dials being so vast. How do I make sure I've set it specifically to 60 and 24 and not say 50 and 20? Is it just a guessing game or is there some method I'm not aware of to make sure they're set at the right levels? Are the dials linear like if it starts at 10 and maxes out at 60 is the halfway point (12 o'clock) 35?

Thanks guys please correct me if I should be setting my filters at different levels.

Click to read more...

 

[LosIsATool 5,000+ posts]

24 should be fine and you use test tones

 

[Syphlyn]

24 should be fine and you use test tones

SO choose 24 and turn it down/up until I hear what? I heard sub sonic is a roll off not a cut off, so what do I listen for?