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hans
Joined: Jul 22, 2007 Posts: 14 Location: germany
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Posted: Thu Dec 06, 2007 1:27 pm Post subject:
soundlab - im really kinda....patching it out Subject description: but...how? |
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Hey folks,
wiring my soundlab right now
and im building the patched out version
sadly i didnt think alot about it before building it so there were and are
some minor problems i run/am running/will run through...hehe
i wanted to wire the pots for the "mixer" so... my question is
how (the f*) do i connect the pots for osc1 ,noise and especially osc2 so they do what they are supposed to do???
i mean if you take a look at osc2 ...you would switch between ramp and rect via s10 which further would feed the "mixer pot" r38
but if youre building the patched out version you send the ramp circuit to one out and the rect circuit to another out
how do i get r38 involved then???
(almost the same with osc1 and noise)
please please help
(and ,if possible, dont tell me ive drilled some waist holes in my already painted and labeld panel!)
thanks |
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Pehr
Joined: Aug 14, 2005 Posts: 1307 Location: Björkvik, Sweden
Audio files: 2
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hans
Joined: Jul 22, 2007 Posts: 14 Location: germany
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Posted: Fri Dec 07, 2007 12:21 am Post subject:
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damit....i already thought so...
well... then ill use one osc1 cv input as mixer input
and so on...
but that would leave only one noise out...
ok....i could use stereo jacks to get more ins/outs on the same space
thanks
edit...why wait a second... i have in total 4 inputs for the vcf
i could use 3 of em for the mixer inputs
and one stereo jack for voltage controll |
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tommi
Joined: Dec 05, 2007 Posts: 247 Location: Italy
Audio files: 3
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Posted: Sat Dec 08, 2007 5:56 am Post subject:
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Hey, take a look at this link: http://electro-music.com/forum/topic-10178.html (scroll down). You 'll maybe get some help from the wiring diagram made by this guy. If I remember he used a switch for selecting the lfo waveform.
I am not sure if I want to make my soundlab patchable or normalized with switches. I have still not received the board and components and i think that when i 'll got it, it will be easier for me to experiment and find out the best way for me to use it. I skipped the panel printing for that day because looking around the MFOS website and this forum i 've seen many differencesbetween patched versions and i dunno wich is better for me not being able to try them!
[/url] |
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hans
Joined: Jul 22, 2007 Posts: 14 Location: germany
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Posted: Sat Dec 08, 2007 6:56 am Post subject:
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thanks,
yeah i see .... would have been possible....
but i already wired the vcf ins to the mixer...so my labels arent quite right(you know the labels on my mixer saying osc1 osc2 noise)
but what the heck...
ive got it running right now and testing it...
i always thought i knew a little bit about synth...but now im not so sure anymore
i wouldnt even know how to patch the stuff???
this is my first synth so please please help me out
im telling you step by step what i do
to test each module i plug it into the ins of the vcf (the volume is controlled by my mixer)
noise is alright from what i can say
heres the first problem:
if got some lfo bleed even if i turn all the mixer pots down
nothing plugged in
if i got range on hi, waveform on ramp (both switches)
the bleed gets really loud
also the bleed is almost constant in relation to the main out pot
when you turn it up a little bit, the noise is as loud as if you turn the main out all the way up
dunno if you know what i mean
also is it normal when you switch the lfo range to low that the output signal
gets really really low?
and the output varies from waveform to waveform very much
like when i have the switch for ramp/rect on rect then i dont get much signal when the other switch (ramp/tri/saw ) is on ramp or saw
wrong resistor somewhere?
i put two 1µF caps in parallel for c13
another thing on the lfo is: i put the mod with the rotary switch in (all of them not just the lfo)
# Use Rotary Switches To Change Timing Capacitors
Carlos Adriano B. Blanco of Brazil shares this mod:
I also want to share 3 simple “mods” I made on my own using single pole 10 position non shorting rotatory switches as follow:
* For C8 and C9 (I kept the original 0.001 uF and then I
added 0.0022, 0.0033, 0.0047 .. and so on)
* For C3 (I did the same but the first position is a 0.5
uF then 1.0 uF, 2.2 uF …..47 uF)
* For C14 also (I kept the original cap then added different
caps for each position)
it doesnt do anything...but ill get to that when i have the regular stuff runnin
ill write more later
thanks
[/b] |
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hans
Joined: Jul 22, 2007 Posts: 14 Location: germany
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Posted: Sat Dec 08, 2007 7:02 am Post subject:
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how can i test the ar generator? it does something...but...not really attack release thingy
where to plug it in and how should it sound?
the vca initial pot seems not to work
here a strange thing
if got abou 20mV when i measure from my front panel to ground???? |
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tommi
Joined: Dec 05, 2007 Posts: 247 Location: Italy
Audio files: 3
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Posted: Sat Dec 08, 2007 10:21 am Post subject:
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Well, me too I am just a beginner either in synth-tweaking and electronic troubleshooting but I want to build a Soundlab too and maybe your problem could be mine when I 'll have built and tested so as first i suggest you to check that every component is in the right place and then check that wiring is ok ( a bit more complicated for you 'cause there's not a panel wiring diagram for patched version like ther is for normalised version ).
Have you added a led indicator on your LFO circuit? Now I can't find it but ireaded somwhere in this forum that they could give problems like yours - no, i find it: http://electro-music.com/forum/topic-18190.html
The 2 1mF cap in parallel for C13 are ok as far as i know.
Quote: | how do i get r38 involved then???
(almost the same with osc1 and noise)
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I think you can add mixer inputs on panel or connect pin 1 of R29, R38 and R44 to their output jack pins. Example: signal of O1 goes to his output jack that is also wired to pin 1 of R29. But i think you need to add a mixer pot so that you got one for O2 ramp and one for O2 rect. well.. i hope it makes sense...
Quote: | how can i test the ar generator? it does something...but...not really attack release thingy
where to plug it in and how should it sound? |
in the normalised version they are plugged to the filter CV input and VCA CV input. Attack time is supposed to give a quickly rising amplitude at the beginning of the sound (in the fully counterclockwise position) and a slowly rising amplitude in the fully clockwise position. Release is how quickly the amplitude goes off after the attack peak. Output is how much this volume shaping given by the attack and release will affect the sound. This happens if you plug it to the VCA CV in. You can give the same shaping to the filter if you plug it to it. |
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hans
Joined: Jul 22, 2007 Posts: 14 Location: germany
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Posted: Sat Dec 08, 2007 11:41 am Post subject:
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thanks
im past the mixer problem already
my dilemma was, i already had the panel ready (drilled, painted and labeled)
ill post some pics sometimes later so youll maybe get what i mean
so i figured...the mixer isnt really a mixer but a section of the vcf
on my panel there are 4 inputs for the vcf section
so what i did is this: first input --> (mixer pot) osc1, second--> osc2 and the third --> noise
(the fourth input is the voltage controll in for the filter)
hope this is clear now cant really explain things in english as its not my native language
i mean i know how a argenerator should sound and how the filter should sound and stuff
ive been using software synth so... but the way my soundlab acts is really strange to me so i wondered
this is a pic how its going to look like
its a soundlab, guitar trigger , sequenzer (also running halfway but one chip is missing so i dont know), sample and hold II
ill take some pics of the panels and of the back as i have some questions
see ya & thanks |
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tommi
Joined: Dec 05, 2007 Posts: 247 Location: Italy
Audio files: 3
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Posted: Sun Dec 09, 2007 5:47 am Post subject:
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WOW! Really nice work, Hans. Now I understand why you don't want to add holes to it
I am curious to hear some sample from your lab when you 'll got it working.
Like you i want to add S&H. Have you used a rotary switch for selection of source to S&H? Have you done by yourself the work of panel painting?
Cheers
T |
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hans
Joined: Jul 22, 2007 Posts: 14 Location: germany
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Posted: Sun Dec 09, 2007 6:04 am Post subject:
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thanks a lot
yeah ive done it all myself
its actually just like...those decals (? right word? you know clear foil you can print on and then glue it on the panel)
and some marker...
nevermind
the s&h is just another section on the "jack panel" so if got like a in, out, gate, trigger, and 3 out jacks for the s&h module
i think im not going to do the troubleshooting next week...ive really got to put this onto hold cause ive been wiring and doing nonstop for like 4days
(got up at 6, no break until 13:00...then open end)
i cant even drive a car cause i dont really see anything at further distances
haha..gotta get some sleep
see you! |
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Pehr
Joined: Aug 14, 2005 Posts: 1307 Location: Björkvik, Sweden
Audio files: 2
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hans
Joined: Jul 22, 2007 Posts: 14 Location: germany
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Posted: Mon Dec 10, 2007 12:41 pm Post subject:
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yus!
you know i was looking for some diy synth layouts/plans for quite a long time
and i found the plans for the soundlab and through it (the soundsamples) the link to the 32/2 sequenzer
i thought "wow lets get started" and didnt find out about the rest of the sequenzers and modules
so in my "happy-haze" i built a sequenzer w/o switchable gate
DAMN! |
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hans
Joined: Jul 22, 2007 Posts: 14 Location: germany
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Posted: Fri Dec 14, 2007 7:54 am Post subject:
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is it normal that you always hear the lfo? |
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Pehr
Joined: Aug 14, 2005 Posts: 1307 Location: Björkvik, Sweden
Audio files: 2
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hans
Joined: Jul 22, 2007 Posts: 14 Location: germany
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Posted: Fri Dec 21, 2007 9:54 am Post subject:
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thanks everyone
its running!!!
nothing ive built (i mean electric circuit stuff) was so easy and quick in a working condition
and its NICE
the sequenzer is cool too
i dont know about the a+r generator in gated mode though...but i think thats what it s'posed to do
well...
now ill take a look at that guitar trigger ive built...hope it works
YAY! YAY! |
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hans
Joined: Jul 22, 2007 Posts: 14 Location: germany
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Posted: Fri Dec 21, 2007 9:56 am Post subject:
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oh wait heres a thing im not sure about
turning the vca's initial pot completely down turns EVERYTHING down (except the bleed )
thats normal is it? |
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RF
Joined: Mar 23, 2007 Posts: 1502 Location: Northern Minnesota, USA
Audio files: 28
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Posted: Fri Dec 21, 2007 10:05 am Post subject:
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Congrats, Hans!
Sure looks great too - really nice package.
bruce |
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hans
Joined: Jul 22, 2007 Posts: 14 Location: germany
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Posted: Mon Dec 24, 2007 3:37 am Post subject:
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thanks
i used the last days to get to know all the stuff (as its my first analog synth)
today i recieved my patch cabels so i have more than 6
ok everything runs perfectly but the ar generator
in gate mode its just fine
but the trigger mode is kinda doing nothing
i have a rotary switch for c3 and on some settings im getting a always on when in triggered mode and on most absolutely nothing
i thought maybe the trigger out of my sequenzer aint right (havent a osci available right now)
so i tried it with the sample and hold trigger out
still nothing
and i mean if it was working i could trigger with s1 (manual gate)
but its not
so i looked at the schems and i thought
"well the only thing that could be wrong is a wrong resistor or a faulty 40106"
so i checkt some resistors (not all by now) and took the ic out and replaced it with the 40106 i got on the s&h pcb
same here
it cant be the wiring could it? i mean it works "gated"
and the trigger wire is just one stupid wire
just so i get it right
when in triggered mode one short pulse from s1 (or the ext gate in)
should start the attack
right? |
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