Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

Topics - opus.quatre

Pages: [1]
PreenFM2 / Output volume vs polyphony..
« on: May 15, 2017, 05:51:44 PM »
Hello there..
Is it normal if I get a big difference in output volume, when I turn the polyphony "knob" ??
On my preenfm2, the output volume is decreasing, as long as I increase the polyphony, and vice versa.. Is it the normal behaviour ? Or is it just on mine ?

And still.. Enjoy your sun..

PreenFM2 / A higher polyphony ??
« on: May 13, 2017, 10:33:10 PM »
Hello there.. And most of all, hello Xavier.. Because this message is mainly for you..

Let's say that the subject will be : would it be possible to make a version of PreenFM2, with a bigger polyphony, by using a pair of Preenf405, one would be the master, and the other would simply be the slave ??

I know that the PCB is not made for it.. But we can probably imagine that, instead of placing the Preenf405 board in the IC support, we could use headers, and connect a second PCB which would hold both Preens..

My old Ensoniq ESQ'1 has a "overflow" option, in its MIDI menu, which allows driving a second ESQ'1 (or a ESQ'M expander) when the number of midi notes received, exceeds it's own polyphony (8 notes)..

The master Preen would then have to send exceeding notes to the slave, and performance control like pitch bend, mod wheel etc.. In fact a full bunch of incoming midi messages.. But not only ; it would also have to send all the preset (or combo) parameters, so that both play the same preset or combo..
The slave would be totally hidden, the user would not have access to it : it would only be there to obey to the master..

Each preset or combo that we would save in the master, would be saved identically in the slave's memory, same preset or combo number..

In terms of price, what would it cost ? Of course, an added PCB, and a second Preen.. What else should be doubled ?
What else should be added ?? I think that there would need a mixer.. Possibly digital mixer, or analog, but prior to the final stage, so that we can use the volume knob to set the volume of the mix..

I know, Xavier, that your time is not infinite.. You have a life to live, and you once said that you would like to have time to play your music.. I understand this very well, and I can just approve you..
And in fact, except me, I don't know how many people would be interested in having a more polyphonic version..
I'm just wishing that I could have a "wider" preenFM, (mainly for electric pianos, in fact) and by this message, I'm opening the topic, for discussion.. But if you say "no way", or "no time", or "too complicated", and even "useless when it concerns only you", then I would fully understand and abandon my wish..

Have a good week end..

PreenFM2 / Connecting..
« on: May 03, 2017, 09:04:32 PM »
Hello there..

I wanted to power my Preenfm2 with an external 9V power chord.. Plus is at the center..
The blue leds flashed once, and that's all.. After a few seconds, the 7805 was terribly hot..
And I've been taught that electronics do need smoke.. Components are full of smoke, and once you let the smoke escape from it, then this component no more works; or very badly.. So I stopped immediately..

So my question is : which is the polarity and the voltage of the external power supply that we are supposed to use ??
Plus at the center ? at the periphery ??
And what will be the problem if anyone plugs a power voltage that would be polarity inverted ??
I wonder if I'd rather unsoulder this power supply entry, and have my preenfm always powered by USB..

Second question is :
About the MIDI sockets : I must connect pins 2 and 4 right ?? And there's no polarity, right ??

Thanx in advance for all your possible and wise answers..
And enjoy the rain..

PreenFM2 / Keyboard scaling on envelope rates..
« on: April 23, 2017, 06:57:44 PM »
Hello there..
I see that there is no keyboard scaling, or keyboard follow, for the envelope rates..

I understand that, through the matrix section, I can direct the keyboard-follow value (in fact, 2 values) to different destinations.. This includes individual operator attacks, all operators attack, and all operators release..
But nothing for the decay sections of the envelope (time 2, 3)..

Having a decay depending on the keyboard is truly useful for all pianos (acoustic and electric), for mallet instruments (marimba, vibraphone...) and for plucked string instruments (guitars, basses)..
Can this be changed ?

Enjoy the sun..

PreenFM2 / User wave forme ??
« on: March 30, 2017, 06:54:09 PM »
Hello there..
Why is the number of user waveforms limited to 6 ??
Sure it's better than on a DX7..
Is it for technical reasons and then, this limit can't be changed ?? Or is it just a choice, and it can be discussed and modified ??

Second question is : when I use one of them in a sound,  is the waveform stored with the preset data, or am I supposed to always leave this waveform on the USB key, so that the preset can call it when needed ??

Enjoy the sun..

PreenFM2 / I ordered it..
« on: December 14, 2016, 09:43:28 AM »
Hello there..
Today is a  big day for me.. I ordered THE synth !!
Yeah !!

Yeah Yeah Yeah Yeah Yeah !!!!!

PreenFM2 / Any other project ??
« on: October 13, 2016, 09:48:07 PM »
Hello again.. 
This might have been discussed earlier,  but..  Do you,  Xavier (or did you) have any project,  for another synth,  with another synthesis method??
Additive synthesis,  for example.. Of substractive ??

PreenFM2 / Wood and synths..
« on: October 05, 2016, 01:06:55 PM »
Hello there..
I suppose you already know this page..
Me,  I just been told today.. So I decided to share it..  Just in case..
Have a nice sunny day in the nicest season of the year..

PreenFM2 / A possible all in one synth ??
« on: September 30, 2016, 06:52:09 PM »
Hello there..
I guess this question is mainly for Xavier..
I would like to built an all in one synth, better than an expander..
I would like to have in a single box, the keyboard, 2 or 3 wheels (bend, mod, plus an extra one), and an input for breath controller (in fact, an external potentiiometer)..
I already have a good 3oct keyboard (Kimber Allen, with 2 contacts per key, which I bought in the last century, but never buiilt..)
The questions are..

1) Does anyone here have a good scheme, to share ? So that I could build my own controller..

But I could as well use an already made master keyboard..

2) In both cases, I would want the "internal" keyboard to control the Preenfm2, of course.. So I would connect its midi out to the tmidi in of the preenFM2.. Simple and basic.. But I would also want to be able to command the Preenfm2 with an external device (Other keyboard, sequencer, or anything..).. So of course, I would need a midi merge..
Does anyone have a good scheme for a MIDI merge circuit ?? A real midi merge, able to manage at least two inputs, even if they send midi codes simultaneously..

3) The question is for Xavier.. Would it be possible to have the preenfm2 merging 2 or more midi inputs, by itself, without using any midimerge ??

3) The next question is for Xavier again.. Would it be possible to have the Preenfm2 doing all this :   reading the (open/close) contacts of the bare keyboard, translating into note on/note off/ velocity.. Reading the status of theb  wheels and external potentiometer, turning these into commands value.. Using all this to command its own sound generating module.. accpeting incoming midi data, and merging them with its own command values.. and eventually, sending those data to a midi out plug ??
What any compact combo synth can do, in fact..

Maybe this topic has already been talked about, I don't know..

Have a nice weekend..

PreenFM2 / [Added in 2.05] Breathing..
« on: September 11, 2016, 04:39:12 PM »
Hello there..
Any possibility to have PreenFM2 responding to breath controller midi messages ??
I guess it's not harder to implement, than the mod wheel..
Is it possible to have it implemented so that it would appear as one source in the modulation matrix ??
I suppose, but maybe I'm wrong, that it should be as simple as duplicating the line corresponding to the mod wheel, and then replace the mod wheel identification code, by the breath controller identification code..
Then probably one line to add, so that it's visible in the matrix ??
Is it possible ??

"Only the fools blew it,
You and me knew life itself is
Oooh life is..... breathing.."

(Kate Bush)

PreenFM2 / Anyone is wanting to sell back his used PreenFM1 ???
« on: July 24, 2016, 10:46:44 PM »
(I know this is the PreenFM2 sub-forum, but as I am not sure that anyone will still read the PrennFM1 subforum, I thought it was clever to post my message here..)

I was wondering.. does anyone want to sell back his used PreenFM1 ??
Or would like to trade it ?
What I can offer in return is..
Well, I have an used (of course) Yamaha TX81Z..
Or.. I also could propose an used (of course) Alesis HR16B drum machine (needs some repair on one slider..)..
what else ?? Oh, yes.. I don't suppose that you want a Roland RA30 expander.. Or a Yamaha QX5 sequencer.. But maybe, you would be interested by the lot (RA30 PLUS QX5) ??

I live in France.. It's good to know, because of shipping costs..

Have a nice time..

PreenFM2 / I want one !!
« on: July 22, 2016, 10:03:18 PM »
Hello there..
First of all, un grand merci à Xavier pour sa création, que je connais encore trop mal, mais dont j'ai cru comprendre qu'elle est de qualité..
So.. I want to buy/build/use/cherish a Preenfm2.. How must I  proceed..
I must buy the board.. Ok..
I must buy the preenf405.. Ok, but where ??
I must buy the components from there :
Ok.. But the list has errors.. One component is only delivered by groups of 16 (the opto coupler) and one is no more available.. And I don't know how to correct it (how to edit the listing/order form).. Est-ce que Xavier pourrait la mettre à jour ?? Merci d'avance..

Have a nice time, and enjoy the sun..


Pages: [1]