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 
 Forum index » Wanted, For Sale, Opportunites and Requests » Parts and Components
Wanted - BBD chip
Post new topic   Reply to topic Moderators: Scott Stites, Uncle Krunkus
Page 1 of 1 [7 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
Author Message
philpeery



Joined: Nov 08, 2006
Posts: 125
Location: new jersey, usa

PostPosted: Fri Jul 20, 2007 7:59 pm    Post subject: Wanted - BBD chip
Subject description: a BIG long shot....
Reply with quote  Mark this post and the followings unread

Hi everyone,

I am looking for a working, long out of production SAD-4096 for a analog BBD chorus delay designed by Craig Anderton. I built the project back when it was published in the early 80's, and used the hell out of it, it was a great sounding delay. When digitals started to become available cheaply, it got foolishly put on the shelf.

So I recently found it in a box in the closet, and when I powered it up, it worked for about a week, and then the delay times started to get very eratic. After another day or so, it stopped altogether. I have checked the circuit with a scope, and it looks like everything else is ok - clocking, signal conditioning, etc. I'd like to get this pedal back into service, and understand that it's not easy or feasable to retrofit an MN3005 into the same circuit.

Does anyone know of a source for this chip, or maybe have one they would be willing to part with?

Thanks!
Phil
Back to top
View user's profile Send private message
Dan Lavin



Joined: Nov 09, 2006
Posts: 620
Location: Spring Lake, Mi, USA
Audio files: 21

PostPosted: Mon Jul 23, 2007 9:03 am    Post subject: Reply with quote  Mark this post and the followings unread

Phil,

Let me check when I get home tonight. I think I have one I'd be willing to trade for chips again. I'll PM you tonight and verify.
Back to top
View user's profile Send private message
magixs



Joined: Feb 29, 2008
Posts: 3
Location: US

PostPosted: Fri Feb 29, 2008 1:50 am    Post subject: Reticon 4096
Subject description: DOD 680
Reply with quote  Mark this post and the followings unread

Same here - have the Dod 680 delay - chip is gone ... so I am looking for a SAD4096 !! I've read in another post : (BBD RETICON SAD1024 under voltage controls) - that it is possible to swap the 4096 for a 1024 ? Does anybody know if these 2 chips are interchangeable? Ofcourse that would turn the delay into a chorus/flanger of sorts ... but at least it's not goin to the local landfill.
Back to top
View user's profile Send private message
philpeery



Joined: Nov 08, 2006
Posts: 125
Location: new jersey, usa

PostPosted: Fri Feb 29, 2008 7:51 am    Post subject: Reply with quote  Mark this post and the followings unread

You can't just drop an SAD1024 in, they are not pin compatible. You would have to buil;d an adapter board for the SAD1024 in order to use it. Also, there are only 1024 delay stages as opposed to 4096 stages between the two chips, so you will loose some of the capability of the 680. But it would make a mean chorus/flanger!

Phil
Back to top
View user's profile Send private message
magixs



Joined: Feb 29, 2008
Posts: 3
Location: US

PostPosted: Fri Feb 29, 2008 2:52 pm    Post subject: Reticon 4096
Subject description: Revive 680
Reply with quote  Mark this post and the followings unread

Thanks Phil - ofcourse that would have been too easy!
I am not a technician but I am good with a solder iron. Is there any hope for me to perform this surgery? How would one make such an adapter, or where do I find some info about it? Some delays use a couple of 1024s - would it be possible to chain them together ... 1024 are still available for about $20.

Nel
Back to top
View user's profile Send private message
philpeery



Joined: Nov 08, 2006
Posts: 125
Location: new jersey, usa

PostPosted: Fri Feb 29, 2008 3:14 pm    Post subject: Reply with quote  Mark this post and the followings unread

I know of a couple of designs that chain a few BBD's together serially, and the results are very successful. I think there is one on generalguitargadgets.com that uses a pair of 3208's or 3205's that you could look at for insipration. I haven't done it myself though, but am going to try working in an mn3005 in place of the SAD4096 on the TH VCAD project from the old Midwest Analog website. Also, I think I have a layout for a daughter board that accepts an SAD 1024, and allows you to wire it to an SAD4096 socket. Let me dig a bit and see if I can find it for you....

Regards,
Phil
Back to top
View user's profile Send private message
magixs



Joined: Feb 29, 2008
Posts: 3
Location: US

PostPosted: Fri Feb 29, 2008 3:44 pm    Post subject: Dod 680 salvage Reply with quote  Mark this post and the followings unread

Thanks! So there's still hope .... I just ordered one SAD 1024chip, new/old stock. - here's my direct email, in case you find something: nelgerome@hotmail.com.
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic Moderators: Scott Stites, Uncle Krunkus
Page 1 of 1 [7 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
 Forum index » Wanted, For Sale, Opportunites and Requests » Parts and Components
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