electro-music.com   Dedicated to experimental electro-acoustic
and electronic music
 
    Front Page  |  Articles  |  Radio
 |  Media  |  Forum  |  Wiki  |  Links  |  Store
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 
Live streaming at radio.electro-music.com

  host / artist show at your time
  Antimon Antimon's Half Year Report
Please visit the chat
 Forum index » Clavia Nord Modular » NM Classic (NM1 or G1)
Noise from Input - bad ADC?
Post new topic   Reply to topic Moderators: Nord Modular Editors
Page 1 of 1 [4 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
Author Message
elros



Joined: Jan 22, 2006
Posts: 13
Location: Norway

PostPosted: Sat Feb 25, 2006 7:02 am    Post subject:  Noise from Input - bad ADC?
Subject description: My new Micro Modular isn't quite well.
Reply with quote  Mark this post and the followings unread

Hi,

I recently got hold of a new (actually demo used) Clavia Micro Modular. Those things aren't easy to get these days, so I was happy to finally find one. I'm using it to process my drum machine sound, including some MIDI clock synced effects. It's very nice!

But. I've found that it gives a bit of noise from Audio In R. Not very much, but it becomes quite a problem when I run the input signal through the overdrive module, and especially through the bit reduction module. Then it is madly noisy!

Has anyone else experienced this kind of thing?

The noise is not like white noise, more like... I don't know what to call it in English. Spot noise? Much like the noise we had at some of the inputs in our old Yamaha ProMix01 at church - and on that one the ADCs were faulty and needed to be replaced. Alas that I don't have the tools (nor experience) to repair SMD stuff. I opened up the MM and found that there's an Analog Devices AD1865R chip - I guess this one is the trouble maker.

Thoughts?
Where should I get it repaired? At Clavia in Sweden probably?

thanks.
Back to top
View user's profile Send private message
Blue Hell
Site Admin


Joined: Apr 03, 2004
Posts: 20474
Location: The Netherlands, Enschede
Audio files: 147
G2 patch files: 318

PostPosted: Sat Feb 25, 2006 7:16 am    Post subject: Reply with quote  Mark this post and the followings unread

Do you still have that noise when you disconect all the MIDI cables from the MM ? Or when you turn your PC off ?

It sounds a bit digital signals are getting in some way, it might be a ground loop somewhere in the system.

_________________
Jan
Back to top
View user's profile Send private message Visit poster's website
elros



Joined: Jan 22, 2006
Posts: 13
Location: Norway

PostPosted: Sat Feb 25, 2006 8:54 am    Post subject: Reply with quote  Mark this post and the followings unread

Blue Hell wrote:
Do you still have that noise when you disconect all the MIDI cables from the MM ? Or when you turn your PC off ?

It sounds a bit digital signals are getting in some way, it might be a ground loop somewhere in the system.


Yes.

I have tried without any cables at all hooked up - only the headphones. I could imagine it being MIDI noise or something like that, since it wasn't static noise but rather dynamic.
Ground loop noise would most likely be present at both input channels, and this doesn't sound at all like your usual 50Hz hum or buzz.
Back to top
View user's profile Send private message
Blue Hell
Site Admin


Joined: Apr 03, 2004
Posts: 20474
Location: The Netherlands, Enschede
Audio files: 147
G2 patch files: 318

PostPosted: Sat Feb 25, 2006 9:20 am    Post subject: Reply with quote  Mark this post and the followings unread

Sounds like its defective then, too bad ...

I'd contact the shop where I bought it, but when not bought in a shop maybe contact Clavia about what to do.

_________________
Jan
Back to top
View user's profile Send private message Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic Moderators: Nord Modular Editors
Page 1 of 1 [4 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
 Forum index » Clavia Nord Modular » NM Classic (NM1 or G1)
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
e-m mkii

Please support our site. If you click through and buy from
our affiliate partners, we earn a small commission.


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