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Strange filter 2 behavior

Re: Strange filter 2 behavior
« Reply #20 on: August 07, 2017, 03:39:35 AM »
The thing is that I can get F1 to fully close by running the calibration a few times, F2 never really closes and the cutoff is not as smooth as F1. F2 when sweeping has a point between 100 and 130 where there are no changes in sound.

drxcm

Re: Strange filter 2 behavior
« Reply #21 on: January 24, 2019, 06:22:33 PM »
Brand new Pro 2 just opened today and seeing the same behaviour here.
Tried running the filter calibration but no change.
Have emailed support - any other suggestions?

drxcm

Re: Strange filter 2 behavior
« Reply #22 on: January 24, 2019, 09:21:47 PM »
When i find the solution i’ll post it here, seems like afew others on here have had the same issue but no followup on what fixed it..

A temporary frustration with my brand new Pro 2 I hope!

Re: Strange filter 2 behavior
« Reply #23 on: January 24, 2019, 10:49:25 PM »
drxcm FYI the debug menu can be accessed by pressing ‘Octave Up’ and ‘Down’ buttons along with ‘Global' at the same time. Just be wary while in this menu page.

drxcm

Re: Strange filter 2 behavior
« Reply #24 on: January 25, 2019, 12:54:15 AM »
drxcm FYI the debug menu can be accessed by pressing ‘Octave Up’ and ‘Down’ buttons along with ‘Global' at the same time. Just be wary while in this menu page.

Thanks, but what do i do in the debug menu to fix this?

Re: Strange filter 2 behavior
« Reply #25 on: January 25, 2019, 02:04:49 AM »
Dsi claimed that the filler tuning inconsistency  was fixed but it is not. I tried to calibrate my filter a few weeks ago and afterwards F2 wouldn't close fully.

I must've ran the calibration unsuccessfully 10 times and then randomly it went back to closing fully.



Brand new Pro 2 just opened today and seeing the same behaviour here.
Tried running the filter calibration but no change.
Have emailed support - any other suggestions?

Re: Strange filter 2 behavior
« Reply #26 on: January 25, 2019, 02:45:34 AM »
1. I would do as DSI recommend on this post https://forum.sequential.com/index.php/topic,2742.0.html

2. If previous suggestion fails I would set every knob/button to it's minimum/default position then try again.

3. If above suggestion also fails then go into the debug menu Clear Calibration and try again.

I myself have not noticed this problem. As you can read, people have had a hit and miss experience. However, upon delivery of my Pro2 it  did need calibrating straight out of the box which I did. Good luck.




drxcm

Re: Strange filter 2 behavior
« Reply #27 on: January 25, 2019, 09:18:08 AM »
1. I would do as DSI recommend on this post https://forum.sequential.com/index.php/topic,2742.0.html

2. If previous suggestion fails I would set every knob/button to it's minimum/default position then try again.

3. If above suggestion also fails then go into the debug menu Clear Calibration and try again.

I myself have not noticed this problem. As you can read, people have had a hit and miss experience. However, upon delivery of my Pro2 it  did need calibrating straight out of the box which I did. Good luck.

Thanks. None of this has worked. Interesting that the thread you posted saif the bug was fixed ina beta OS but I’m running the latest OS and its still there.

I’ll wait to see what support suggssts

cbmd

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Re: Strange filter 2 behavior
« Reply #28 on: January 25, 2019, 12:26:03 PM »
To note, due to the filter's different topologies, filter 2 will never cut as much low end as filter 1. 

There is danger in users presuming that the filter's expected behavior is related to a previously resolved bug.  Please contact us directly in this regard so we can assess whether the synth is working correctly or not.
Dave Smith Instruments

drxcm

Re: Strange filter 2 behavior
« Reply #29 on: January 25, 2019, 06:56:46 PM »
Ok, so I've been in touch with support.   My issue was identical to the video posted earlier in this thread.

The advice provided by Sequential support was quick and helpful, but did not resolve the issue without my own experimentation.

It was only after considerable experimentation that I was able to get the filter 2 cutoff to behave what I presume is correctly.

The initial advice was to run the filter autotune with the F2 cutoff and resonance knobs fully counter clockwise.  This initially produced a dead zone between fully counterclockwise and 11 oclock, but addressed the strange bipolar issue I was having.

Then this advice was corrected, and I was told I should instead have run it with those knobs fully clockwise.  I did and this  reverted the behaviour to the original problematic state.

Running the calibration did not consistently reproduce the above behaviour.  It was very hit and miss.  Sometimes no effect, sometimes a big effect on the knob behaviour.  Nothing consistent.  Even when clearing the calibrations in the debug menu first.

I eventually got to a good result, after a lot of experimentation, with the following routine:

I cleared the calibration again.
Then ran the filter autotune / calibration with F2 cutoff / resonance knobs fully counterclockwise
This got rid of the bipolar behaviour in my video, and reproduced the pot’s dead zone from fully counterclockwise to noon before the filter audibly started to respond (ie where I got to the first time).

This time however, each time a calibration was run resulted in successive improvements in the response.

The first run resulted in the bottom 1/2 of the filter pot travel being “dead”
The second run resulted in the bottom 1/3 of the pot travel “dead”
The third run resulted in behaviour “within normal spec” with the far ends of the pot travel being relatively symmetrically dead but the pot working correctly.

Seems to be acceptable in terms of functionality at the moment, but I’m not sure now if it’s “normal” or not.
« Last Edit: January 25, 2019, 06:58:36 PM by drxcm »