preenfm Forum
PreenFM => preenfm2 and preenfm3 => Topic started by: pser on January 12, 2014, 01:42:20 AM
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I have just solder and mount the PreenFM2, I am stunned and very satisfied with the sound it generate. There are as mention in another thread some noise on some of the DX7 SYX, but Xavier a great synth you've made!
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Yes i can totally confirm this. PreenFM2 sounds wicked and has one of the best interfaces for FM-tweaking. Since building this 2 days ago, i've already made a few percussive combos and few bass patches.
(https://fbcdn-sphotos-a-a.akamaihd.net/hphotos-ak-prn1/t1/q84/s720x720/1012878_10151912644937444_771801837_n.jpg)
How it sounds (apart of echoes):
https://www.dropbox.com/s/jo615vebgyxh13s/PreenBeat1.mp3 (https://www.dropbox.com/s/jo615vebgyxh13s/PreenBeat1.mp3)
First, percussive combo was sequenced and sampled with octatrack from mixer, then played from octatrack + 2 new instruments (cycled clang + metallic chords).
Gonna make a few feature requests later btw.
Thank you Xavier!
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Wow! Really nice sounds! I must learn how to program FM synths better... Still struggling with getting the intuition for tweaking fm.
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Thanks for the nice words...
and for the nice track, and for this GREAT picture :D
Don't hesitate with your requests.
Xavier
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Here is Renoise sequencing 4 instruments of PreenFM2 via USB Midi (produced some noise) then signal was routed to 2 mono outputs, one for bass and one for everything else + send to echo. Then whole mix was sent to soundcard input and recorded.
https://www.dropbox.com/s/wrvcv0nvji64tm6/Noisefloor.mp3
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You're getting noise when using USB MIDI? are you using a USB cable with RF suppressors?
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do you mean this rolls on the ends? :D
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Yeah, those big cannister things on the cable. They should filter out any noise.
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Here is Renoise sequencing 4 instruments of PreenFM2 via USB Midi (produced some noise) then signal was routed to 2 mono outputs, one for bass and one for everything else + send to echo. Then whole mix was sent to soundcard input and recorded.
https://www.dropbox.com/s/wrvcv0nvji64tm6/Noisefloor.mp3
Nice track :)
Can i add it on the soundcloud PreenFM2 tracklist ?
Can you give more info about the USB midi noise ?
Is the noise still here when you turn down a little the volume ?
I would double check the soldering around the 4 * 220uF electrolytic caps.
And do you have a picture of the background to see how is your usb cable ?
Xavier
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Nice track :)
Can i add it on the soundcloud PreenFM2 tracklist ?
Thanks!
Sure, feel free :) You should upload it by yourself tho, cause i have no soundcloud account.
Can you give more info about the USB midi noise ?
Is the noise still here when you turn down a little the volume ?
I would double check the soldering around the 4 * 220uF electrolytic caps.
And do you have a picture of the background to see how is your usb cable ?
I replaced a cable with newer one and noise is gone. Nonetheless, i gonna get 9V DC power supply cause i prefer to be more autonomous from pc
Anyway, USB midi works like a charm via all 4 channels and it is good
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One more question, do i have to consider polarity of wall power supply somehow? Mine goes with removable heads for various devices and i can select polarity by side, this head attached to wire.
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Center pin is positive in nearly every device these days (Preen included).
There is a protection diode to prevent damage if you get it wrong.
Since it's using a linear regulator, the excess power is emitted as heat. So it will run cooler if you are just above the minimum required voltage. Given it is a 7805 it needs 7v minimum.
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OK, got it.
Thanks!