indigobjn wrote:

 

...

But I want you to send the changes made to HD400 unit (1A) and only then after go to 1B using the HD Edit. And go to 1A again. Sometimes, The changes aren't retained even after saving it. Please check this with your HD400 and reply....

OK - so I followed the same recipe as in my previous post, but this time I added a step:

4a) SEND SELECTED patch 1A to the HD400 device.

Then I proceeded with steps 5 and 6.

Observations: the default cab selection appears again in the HD Edit workspace for preset 1A. This reflects the bug that we now know exists. However: if you proceed:

7) RECEIVE SELECTED patch 1A.

you will observe that the change that was saved to the HD device in step 4a was correctly stored in the HD400, and is correctly recalled by the RECEIVE command. So there is nothing more going wrong here other than the already acknowledged bug. It is only the HD400 Edit workspace that is incorrect - theHD400 device did retain the saved changes.

indigobjn wrote:

...

And I want you to try one more thing with your HD400 along with a Cab model other than Default. Add a digital delay on that preset on 1A and note down the delay parameters such as: Delay time, Mix amount, Feedback, Treble, Bass and then go to 1B after sending (also without sending) it to HD400 unit via HD400 edit and return to 1A using edit. Does the Delay parameters go all over the place along with the Cac model getting changed and preset shown unsaved?

...

I tested this in two ways as you asked:

Without SENDing the change to the HD400 device before switching to 1B:

After switching back again to 1A the cab default bug shows itself again. However, the changes made to the Digital Delay FX were retained in the HD400 Edit workspace. I saw nothing unexpected.

After SENDing the change to the HD400 device  before switching to 1B:

Same result as above. The known bug is evident; the Digital Delay changes work as expected.

Note that your observed behaviour here could depend on your HD400 SETUP with respect to the AutoFX system setting. If you're not sure what that does please check it out in the manual.

Note also that I was ONLY using HD400 Edit to make these changes. The observed behaviour could be different if you use the HD400 footswitch to change presets. You can demonstrate this in the first example immediately above - the one where you change the Digital Delay parameters in HD400 Edit, but do NOT SEND the changes to the HD400 device.  After changing the Digital Delay parameters, use the HD400 footswitches to select preset 1B and then back to 1A. When I do that, the Digital Delay settings do jump around in a very confusing manner. That is normal behaviour. WHY? Because when you use the device footswitch to change to preset 1A it loads the preset data from the original unchanged preset location in the HD400 device - it does not load the preset data from the HD400 Edit workspace. Since you did not SEND the HD400 Edit changes, these two sets of preset data are different. For reasons known only to the Line 6 product developers, it appears that some of this different data is transmitted to the HD400 Edit program when the HD400 footswitch is used, and some isn't - resulting in unpredictable behaviour and data displays. This is the root cause/explanation of the loss of synchronization that I was talking about earlier in this thread.

SO - my conclusion after all of this is:

- yes, there is a bug in HD400 Edit re: the default cab selection behaviour. We have reported that bug.

- all other anomalies in expected behaviour that I observed were due to the loss of synchronization between the HD400 device and the HD400 Edit workspace. All of these anomalies can be avoided by NOT using the HD400 device to make any changes while HD400 Edit is running.