Author |
Message |
NoizeToyz
Joined: Jan 09, 2010 Posts: 24 Location: Brighton
Audio files: 1
|
Posted: Wed Aug 15, 2012 12:25 am Post subject:
|
|
|
Hey Jim,
Thanks for your answer; yes I also thought it might be the noise source modulating it so I actually disconnected the shell modulation switch to see if that helped, but alas not.
I took a direct audio feed from the shell output jumper (J16 / 2) and it is the same sound...
I'll check the power going to the ICs to make sure that's all good...
Ed
*Edit*
I found that other people have had the same problems and it seems like it's down to a dodgy batch of XR2206 chips with batch numbers F0919. These don't seem to work on anything above around 11v strangely.
I swapped them for some other ones and all is working perfectly. The batch numbers which work for me are;
0519 & F0630 Last edited by NoizeToyz on Wed Mar 27, 2013 3:44 am; edited 1 time in total |
|
Back to top
|
|
|
o-live
Joined: Aug 14, 2012 Posts: 25 Location: france
|
Posted: Thu Aug 16, 2012 3:00 pm Post subject:
|
|
|
hello
where i can found the pcb for the MPS please ,i don't see it on the web
thank you |
|
Back to top
|
|
|
elmegil
Joined: Mar 20, 2012 Posts: 2177 Location: Chicago
Audio files: 16
|
|
Back to top
|
|
|
o-live
Joined: Aug 14, 2012 Posts: 25 Location: france
|
Posted: Thu Aug 16, 2012 6:48 pm Post subject:
|
|
|
thank you sams as teh other topic where i have posted my question
i have see the store of electro music , but this pcb is not available from long time ,i search an other site for purchase it ,or other method for make the pcb
good day |
|
Back to top
|
|
|
elmegil
Joined: Mar 20, 2012 Posts: 2177 Location: Chicago
Audio files: 16
|
Posted: Thu Aug 16, 2012 7:11 pm Post subject:
|
|
|
I don't understand what you're talking about, I bought one from here just last month. If they were out of stock, they wouldn't have it in the store. |
|
Back to top
|
|
|
o-live
Joined: Aug 14, 2012 Posts: 25 Location: france
|
Posted: Thu Aug 16, 2012 8:36 pm Post subject:
|
|
|
sorry for misunderstanding , i have look sometimes in this last month and always (not available) ,hope new batch come soon |
|
Back to top
|
|
|
elmegil
Joined: Mar 20, 2012 Posts: 2177 Location: Chicago
Audio files: 16
|
|
Back to top
|
|
|
o-live
Joined: Aug 14, 2012 Posts: 25 Location: france
|
Posted: Fri Aug 17, 2012 12:42 am Post subject:
|
|
|
i'm not very good in english ,i have the understand the inverse
thank's for your help |
|
Back to top
|
|
|
elmegil
Joined: Mar 20, 2012 Posts: 2177 Location: Chicago
Audio files: 16
|
Posted: Fri Aug 17, 2012 5:29 am Post subject:
|
|
|
I'm glad you can get the board |
|
Back to top
|
|
|
o-live
Joined: Aug 14, 2012 Posts: 25 Location: france
|
Posted: Fri Aug 17, 2012 11:02 am Post subject:
|
|
|
Thank you too
do you have make this project ? |
|
Back to top
|
|
|
elmegil
Joined: Mar 20, 2012 Posts: 2177 Location: Chicago
Audio files: 16
|
Posted: Fri Aug 17, 2012 11:44 am Post subject:
|
|
|
No, it's buried pretty far back in my backlog. As of this moment I'm not even sure where I will be able to house it, my hand made modular really doesn't have room. I just know I need some percussion and I like Thomas Henry's designs a lot, and I wanted to support EM as well. |
|
Back to top
|
|
|
sduck
Joined: Dec 16, 2007 Posts: 459 Location: Nashville
Audio files: 5
|
Posted: Thu Dec 20, 2012 10:17 am Post subject:
|
|
|
Finally got around to building this.
Works perfectly, sounds great! |
|
Back to top
|
|
|
Uncle Krunkus
Moderator
Joined: Jul 11, 2005 Posts: 4761 Location: Sydney, Australia
Audio files: 52
G2 patch files: 1
|
Posted: Thu Dec 20, 2012 2:06 pm Post subject:
|
|
|
Beautiful build sduck. _________________ What makes a space ours, is what we put there, and what we do there. |
|
Back to top
|
|
|
mosc
Site Admin
Joined: Jan 31, 2003 Posts: 18198 Location: Durham, NC
Audio files: 213
G2 patch files: 60
|
Posted: Fri Dec 21, 2012 1:12 am Post subject:
|
|
|
Uncle Krunkus wrote: | Beautiful build sduck. |
Yup _________________ --Howard
my music and other stuff |
|
Back to top
|
|
|
synthcube
Joined: Dec 21, 2011 Posts: 64 Location: boston
|
Posted: Sat Dec 29, 2012 8:43 pm Post subject:
|
|
|
ditto. the colors really brighten that up.
Its on my backlog list too. Which keeps growing |
|
Back to top
|
|
|
mubase
Joined: Mar 24, 2011 Posts: 117 Location: London UK
Audio files: 5
|
Posted: Sun May 05, 2013 2:48 pm Post subject:
MPS boards are still available?? |
|
|
Hi all. Are the MPS PCBs still available??
I have read the inforrmation and am becoming very enamoured by the possibilities! I love the idea that it can be used as a percussive instrument or a synthesizer in its own right..
I have an SN voice which I have built in a small ex-coco serial box as seen here: http://www.youtube.com/watch?v=eABfF8u4XkI
I think the Thomas Henry coupled with my SN voice would make a very nice team.
....
I'd build something similar to the Sn Voice LUX in the video with a baby 8 sequencer but with the MPS as the main engine... _________________ There's a crack in everything...Thats how glue manufacturers make a living. |
|
Back to top
|
|
|
sduck
Joined: Dec 16, 2007 Posts: 459 Location: Nashville
Audio files: 5
|
Posted: Sun May 05, 2013 5:16 pm Post subject:
|
|
|
Click the "store" link at the top left of this page |
|
Back to top
|
|
|
elmegil
Joined: Mar 20, 2012 Posts: 2177 Location: Chicago
Audio files: 16
|
Posted: Sat Jun 08, 2013 11:34 pm Post subject:
|
|
|
I can't compete with sduck for beautiful builds, but I like it nonetheless
|
|
Back to top
|
|
|
NoizeToyz
Joined: Jan 09, 2010 Posts: 24 Location: Brighton
Audio files: 1
|
|
Back to top
|
|
|
NoizeToyz
Joined: Jan 09, 2010 Posts: 24 Location: Brighton
Audio files: 1
|
|
Back to top
|
|
|
mubase
Joined: Mar 24, 2011 Posts: 117 Location: London UK
Audio files: 5
|
Posted: Mon Jul 01, 2013 7:26 am Post subject:
MPS build started. Very excited about this one. |
|
|
I recieved my MPS PCB in the post on Friday gone. Very excited about this build. I've got most of the componenjts except for a few resistors. I'm thinking of building it inside the same type of box as my SN Voices with a baby 8 sequencer built in also like here:
. All Patchable. http://electro-music.com/forum/phpbb-files/thumbs/t_snlux_174.jpg
Only problem might be the number of pots... I'm thinking I might be able to sacrifice some of the banana sockets as potholes (like on the sequencer...)
Then when I'[url] finished I'll have 3 of these boxes, 2 of which will be SN Voice based and the other an MPS! Then I will be able to patch them all together!!!! Mwahhaaahahahahahaaaaaaaa....[/url] _________________ There's a crack in everything...Thats how glue manufacturers make a living. |
|
Back to top
|
|
|
JoeMorris
Joined: Apr 26, 2009 Posts: 161 Location: Brighton
|
Posted: Sun Jul 07, 2013 11:12 am Post subject:
|
|
|
Had the board for this for a while and finally got round to putting it together a few weeks ago. Unfortunately I'm having real trouble with it, and am desperately wanting to get some of the wonderful sounds I have heard in the demos!
My tests show that the trigger section works as it should and at the other end the mixer section works as it should when I input external signals into the returns, but not the all important stuff in between! I am getting a square wave from pin 4 of the CD4046 and a chaotic-looking triangle wave from pin 2 of the XR Oscillator chip with or without the LM17600s in place, but when I turn the power on the LM17600Ns start to heat up to the touch until they either burn out or I turn the power off in time (Ive been through a couple of sets whilst troubleshooting). A couple of the transistors smoked out too.
Is there anything obvious in the circuit that could be wrong that is frying the LMs whilst leaving the other three chips intact? I'm starting to tear my hair out here |
|
Back to top
|
|
|
elmegil
Joined: Mar 20, 2012 Posts: 2177 Location: Chicago
Audio files: 16
|
Posted: Sun Jul 07, 2013 1:23 pm Post subject:
|
|
|
There are transistors in each section of the circuit that are key to generating currents for controlling the LM chips. If those, or their associated resistors are wrong, or have shorts, I could see that causing this kind of behavior without blowing up the op amps.
So I'd go over the circuit paying special attention to the transistors (are they the right ones?) and the resistors around them, and whether there are any solder bridges or touching leads. |
|
Back to top
|
|
|
JoeMorris
Joined: Apr 26, 2009 Posts: 161 Location: Brighton
|
Posted: Sun Jul 07, 2013 1:37 pm Post subject:
|
|
|
Many thanks for the swift reply! did you solve your volume problem in the end? I have used bc550 and bc560 instead of 2n3904 and 2n3906, I thought they were interchangeable, could this be the problem do you think? Do you know what the LM pin readings should be? |
|
Back to top
|
|
|
elmegil
Joined: Mar 20, 2012 Posts: 2177 Location: Chicago
Audio files: 16
|
Posted: Sun Jul 07, 2013 1:47 pm Post subject:
|
|
|
BC series transistors usually orient the opposite way (flat side wise) from 2N series transistors, that sounds like a highly likely possibility for your problem.
There's no reason you shouldn't be able to use them, but you have to make sure the pinouts are oriented per the way the transistors need to be oriented (emitter, base, collector), rather than the cases
I got my volume problem partly solved on the circuit, and partly solved by going through a sub mixer. Still not thinking that should be necessary, but I get good sounds with what I have now and it saves me some frustration that I can apply to other things . |
|
Back to top
|
|
|
|