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11
PreenFM2 / Re: New filters
« Last post by Toltekradiation on October 06, 2019, 01:02:05 PM »
adcIn version
12
PreenFM2 / Re: New filters
« Last post by Toltekradiation on October 06, 2019, 01:01:09 PM »
here is a version with 3 more filters, for sound design and phasing fun :)

changes are :

Not3 :
  triple notch filter, Sprd to spread the 2 poles around the center frequency
Ap3 :
  all pass triple filter, Sprd to spread the 2 poles around the center frequency
Ap3b :
  all pass triple filter, resonant version, Sprd to spread the 2 poles around the center frequency

Reworked pann fx :
  stereo placement tool : pos = panning, sprd = 3 x pole spread

Slight modification of the Txr1&2, LPx1&2
13
PreenFM2 / Re: Big Problem..
« Last post by Mortic on October 04, 2019, 08:41:49 PM »
Quote
If it cannot read and write on the key : USB key problem.
As the Usb key is directly wired to the Microcontroller, that cannot be other components.
The first USB key must be burned as it cannot accept more than 5V.
Format it again copy the /pfm2/ fodler from the zip file.
If it still does not work try another USB Key.

I changed the key (for the third time) and it was good that was it!

Quote
"The usb power does not work either" : What do you mean ?
I thought we could feed the preen by usb port but apparently no.


In any case I love this synth and I want to say congratulations and thank you for creating it :)

14
PreenFM2 / Re: Big Problem..
« Last post by Xavier on October 04, 2019, 10:28:40 AM »
I changed the MCP4922 and the 6n1372, the sound came back and the midi too. (yeah!)

Great !  :)

But I discovered a new problem ...
when I want to save patches or settings the PreenFm2 freeze, nothing responds ..
I changed usb key (in fat32), put the latest firmware (2.10) but nothing works.
The usb power does not work either and he does not read the dx7 presets too.
it's as if he could not read and write on the key .
Any idea what this can be?
If it cannot read and write on the key : USB key problem.
As the Usb key is directly wired to the Microcontroller, that cannot be other components.
The first USB key must be burned as it cannot accept more than 5V.
Format it again copy the /pfm2/ fodler from the zip file.
If it still does not work try another USB Key.

"The usb power does not work either" : What do you mean ?




15
PreenFM2 / Re: Big Problem..
« Last post by Mortic on October 01, 2019, 09:13:34 PM »
Hi Xavier,
I changed the MCP4922 and the 6n1372, the sound came back and the midi too. (yeah!)
But I discovered a new problem ...
when I want to save patches or settings the PreenFm2 freeze, nothing responds ..
I changed usb key (in fat32), put the latest firmware (2.10) but nothing works.
The usb power does not work either and he does not read the dx7 presets too.
it's as if he could not read and write on the key .
Any idea what this can be?

Thank you in advance for your answers.
16
PreenFM2 / Re: Newly built, no audio or indication of incoming midi
« Last post by manateemilitia on October 01, 2019, 06:40:43 AM »
Fixed it. It was the exact same short Xavier found in this thread: http://ixox.fr/forum/index.php?topic=63509.msg65719#msg65719
17
PreenFM2 / Re: Newly built, no audio or indication of incoming midi
« Last post by manateemilitia on October 01, 2019, 05:30:40 AM »
Well, some good news—I had soldered the wrong MIDI pins. Still no audio though, unfortunately.
18
PreenFM2 / [Resolved] Newly built, no audio or indication of incoming midi
« Last post by manateemilitia on October 01, 2019, 05:17:14 AM »
Just built this great synth from a full kit, very excited to play it but I get a little bit of a crackle from the right channel and no chime as well as nothing indicating that incoming midi messages are received. Any idea of what I should check? Menu browsing, etc works great.
19
PreenFM2 / Re: New filters
« Last post by Toltekradiation on September 29, 2019, 09:34:37 PM »
yes it work fine now ! thanks !
it allowed me to fix some performance issues i wasn't aware of ;)
20
PreenFM2 / Re: Strange behaviour starting up
« Last post by Soop on September 29, 2019, 06:08:30 PM »
Ah, that makes sense - many thanks Xavier. I inserted a jumper instead of the 22ohm resistor and now I have audio and USB midi working.

What a great sounding synth that you made! So full of character and a powerful sound.

Thanks so much for your help.
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