Lo EQ frequency range on Mixbus 32C v6

[KevinTheDrummer]

Hi folks,

I'm using mixbus32c-6.2.270 on Linux, and I'm getting an unexpected result for the high and low frequencies of the LO EQ knob. As I turn the EQ frequency knobs I get the following.

         HI:   767 Hz - 16.75 kHz
 HI MID:    400 Hz - 6.0 kHz
LO MID:    200 Hz - 3.1 kHz
       LO:    383.5 Hz - 8.37 kHz

The above was all done with the boost/cut knobs set to 0 dB

The manual says I should see 

         HI:   900 Hz - 13 kHz    (close enough)
 HI MID:    400 Hz - 6.0 kHz  (matches) 
LO MID:    200 Hz - 3.1 kHz  (matches)
       LO:    40 Hz - 600 Hz


What might be wrong here? More importantly, how do I fix it?

Thanks,
Kevin

[KevinTheDrummer]

Hi folks,

I'm using mixbus32c-6.2.270 on Linux, and I'm getting an unexpected result for the high and low frequencies of the LO EQ knob. As I turn the EQ frequency knobs I get the following.

         HI:   767 Hz - 16.75 kHz
 HI MID:    400 Hz - 6.0 kHz
LO MID:    200 Hz - 3.1 kHz
       LO:    383.5 Hz - 8.37 kHz

The above was all done with the boost/cut knobs set to 0 dB

The manual says I should see 

         HI:   900 Hz - 13 kHz    (close enough)
 HI MID:    400 Hz - 6.0 kHz  (matches) 
LO MID:    200 Hz - 3.1 kHz  (matches)
       LO:    40 Hz - 600 Hz


What might be wrong here? More importantly, how do I fix it?

Thanks,
Kevin

Would it matter that I've used successive versions of Mixbus 6 on the same computer over the years?

It's ironic that the entire reason I bought Mixbus-32C a few days ago was to get the EQ section.

[loderunner]

Hello KevinTheDrummer,

might I ask how you measured your values? I tried to track the filter responses with an analyzer (Fons Adriaensen's japa) but coldn't get anywhere near the ones you posted.

To be honest, I never looked at the numbers, just turned the knobs and the 32 always seemed to be easier to dial in than other EQs. But now that you asked i noticed that the frequency of both shelf EQs changes when turning the gain knob but the analyzer shows just the response that I would expect. Seems like a pretty cool trick to me. Maybe there is nothing to fix and that is just how this EQ works?

Anyway – thanks a lot for your question! I have already learned something and look forward to learning more.

[sunrat]

I just noticed that recently too and I recall it being mentioned here a while back. The low frequency displayed in the scribble strip shows 10x what is actually being affected. It's a bug which I thought it was fixed.
I haven't updated to mixbus32c-6.2.270 from -200 yet but I believe that update was only to fix mp3 export.

[Dingo]

https://forum.harrisonconsoles.com/thread-10317.html