electro-music.com   Dedicated to experimental electro-acoustic
and electronic music
 
    Front Page  |  Radio
 |  Media  |  Forum  |  Wiki  |  Links
Forum with support of Syndicator RSS
 FAQFAQ   CalendarCalendar   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   LinksLinks
 RegisterRegister   ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in  Chat RoomChat Room 
 Forum index » DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
soundlab - im really kinda....patching it out
Post new topic   Reply to topic Moderators: dnny, Uncle Krunkus, v-un-v
Page 1 of 1 [18 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
Author Message
hans



Joined: Jul 22, 2007
Posts: 14
Location: germany

PostPosted: Thu Dec 06, 2007 1:27 pm    Post subject: soundlab - im really kinda....patching it out
Subject description: but...how?
Reply with quote  Mark this post and the followings unread

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
Back to top
View user's profile Send private message
Pehr



Joined: Aug 14, 2005
Posts: 1307
Location: Björkvik, Sweden
Audio files: 2

PostPosted: Thu Dec 06, 2007 2:38 pm    Post subject: Reply with quote  Mark this post and the followings unread

Well, the filter works like a mixer aswell so you could actually have input jacks on O1, O2 and NS (the mixer pots) in the schematic.
_________________
YouTube channel
flickr photostream
http://loxodrom.blogspot.com
http://www.garageband.com/artist/loxodrom
http://soundcloud.com/loxodrom
Back to top
View user's profile Send private message
hans



Joined: Jul 22, 2007
Posts: 14
Location: germany

PostPosted: Fri Dec 07, 2007 12:21 am    Post subject: Reply with quote  Mark this post and the followings unread

damit....i already thought so...

Crying or Very sad


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
Back to top
View user's profile Send private message
tommi



Joined: Dec 05, 2007
Posts: 247
Location: Italy
Audio files: 3

PostPosted: Sat Dec 08, 2007 5:56 am    Post subject: Reply with quote  Mark this post and the followings unread

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]
Back to top
View user's profile Send private message
hans



Joined: Jul 22, 2007
Posts: 14
Location: germany

PostPosted: Sat Dec 08, 2007 6:56 am    Post subject: Reply with quote  Mark this post and the followings unread

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 Embarassed
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
Embarassed
[/b]
Back to top
View user's profile Send private message
hans



Joined: Jul 22, 2007
Posts: 14
Location: germany

PostPosted: Sat Dec 08, 2007 7:02 am    Post subject: Reply with quote  Mark this post and the followings unread

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????
Back to top
View user's profile Send private message
tommi



Joined: Dec 05, 2007
Posts: 247
Location: Italy
Audio files: 3

PostPosted: Sat Dec 08, 2007 10:21 am    Post subject: Reply with quote  Mark this post and the followings unread

Well, me too I am just a beginner either in synth-tweaking and electronic troubleshooting Embarassed 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)

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. Shocked 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.
Back to top
View user's profile Send private message
hans



Joined: Jul 22, 2007
Posts: 14
Location: germany

PostPosted: Sat Dec 08, 2007 11:41 am    Post subject: Reply with quote  Mark this post and the followings unread

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 Wink 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


Posted Image, might have been reduced in size. Click Image to view fullscreen.

ill take some pics of the panels and of the back as i have some questions

see ya & thanks
Back to top
View user's profile Send private message
tommi



Joined: Dec 05, 2007
Posts: 247
Location: Italy
Audio files: 3

PostPosted: Sun Dec 09, 2007 5:47 am    Post subject: Reply with quote  Mark this post and the followings unread

WOW! Really nice work, Hans. Now I understand why you don't want to add holes to it Smile
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 Cool
T
Back to top
View user's profile Send private message
hans



Joined: Jul 22, 2007
Posts: 14
Location: germany

PostPosted: Sun Dec 09, 2007 6:04 am    Post subject: Reply with quote  Mark this post and the followings unread

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!
Back to top
View user's profile Send private message
Pehr



Joined: Aug 14, 2005
Posts: 1307
Location: Björkvik, Sweden
Audio files: 2

PostPosted: Sun Dec 09, 2007 12:42 pm    Post subject: Reply with quote  Mark this post and the followings unread

Wow! nice suitcase! Very Happy

Do I also see the 32 step sequencer in there? Cool

_________________
YouTube channel
flickr photostream
http://loxodrom.blogspot.com
http://www.garageband.com/artist/loxodrom
http://soundcloud.com/loxodrom
Back to top
View user's profile Send private message
hans



Joined: Jul 22, 2007
Posts: 14
Location: germany

PostPosted: Mon Dec 10, 2007 12:41 pm    Post subject: Reply with quote  Mark this post and the followings unread

yus! Very Happy

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!
Back to top
View user's profile Send private message
hans



Joined: Jul 22, 2007
Posts: 14
Location: germany

PostPosted: Fri Dec 14, 2007 7:54 am    Post subject: Reply with quote  Mark this post and the followings unread

is it normal that you always hear the lfo?
Back to top
View user's profile Send private message
Pehr



Joined: Aug 14, 2005
Posts: 1307
Location: Björkvik, Sweden
Audio files: 2

PostPosted: Fri Dec 14, 2007 9:18 am    Post subject: Reply with quote  Mark this post and the followings unread

Yes, that is true... for LFO high frequencies.

YOu can also hear the VCO2 through the noise...

_________________
YouTube channel
flickr photostream
http://loxodrom.blogspot.com
http://www.garageband.com/artist/loxodrom
http://soundcloud.com/loxodrom
Back to top
View user's profile Send private message
hans



Joined: Jul 22, 2007
Posts: 14
Location: germany

PostPosted: Fri Dec 21, 2007 9:54 am    Post subject: Reply with quote  Mark this post and the followings unread

thanks everyone

its running!!!

nothing ive built (i mean electric circuit stuff) was so easy and quick in a working condition

and its NICE Cool

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!
Back to top
View user's profile Send private message
hans



Joined: Jul 22, 2007
Posts: 14
Location: germany

PostPosted: Fri Dec 21, 2007 9:56 am    Post subject: Reply with quote  Mark this post and the followings unread

oh wait heres a thing im not sure about

turning the vca's initial pot completely down turns EVERYTHING down (except the bleed Laughing )

thats normal is it?
Back to top
View user's profile Send private message
RF



Joined: Mar 23, 2007
Posts: 1502
Location: Northern Minnesota, USA
Audio files: 28

PostPosted: Fri Dec 21, 2007 10:05 am    Post subject: Reply with quote  Mark this post and the followings unread

Congrats, Hans!

Sure looks great too - really nice package.

bruce
Back to top
View user's profile Send private message
hans



Joined: Jul 22, 2007
Posts: 14
Location: germany

PostPosted: Mon Dec 24, 2007 3:37 am    Post subject: Reply with quote  Mark this post and the followings unread

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?
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic Moderators: dnny, Uncle Krunkus, v-un-v
Page 1 of 1 [18 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
 Forum index » DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
Jump to:  

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Forum with support of Syndicator RSS
Powered by phpBB © 2001, 2005 phpBB Group
Copyright © 2003 through 2009 by electro-music.com - Conditions Of Use