251e gremlins (again)

Discussing some incredible modules that don't quite fit into the other forum categories.

Moderators: Kent, Joe., luketeaford, lisa

Post Reply
corkyburger
Wiggling with Experience
Posts: 257
Joined: Mon Feb 23, 2009 8:14 am

251e gremlins (again)

Post by corkyburger » Tue Nov 19, 2019 10:34 am

Just wondering if anyone else has encountered this behaviour with the 251e.

I'm using two channels in S&h mode, using pulse outs from the 281e and SRV's from the 266e. I've used this successfully in the past (in fact it was working fine just yesterday!), pre-programming a sequence of notes in a key, and using the SRV to determine which steps are played, with as much/little random as I like. (by using the skew to move through the steps and adjusting the chaos and degree controls to set how much random I want)

So that was all working fine till today when I noticed that the 251e wouldn't go any lower than step 15. I have the degree and chaos dials set to zero and the skew set to zero, so I should be seeing step 1 on the 251 repeating. But, as i said, it won't go any lower than step 15.

I have switched off and on, tried a blank patch memory.

I want to love this module but damn it drives me mad......

User avatar
dougcl
Number 6
Posts: 4051
Joined: Sat Jul 26, 2008 3:04 am
Location: Portland OR

Re: 251e gremlins (again)

Post by dougcl » Tue Nov 19, 2019 4:52 pm

Not sure this is related, and it's not clear in your post if you are doing this, but whenever I run 281e pulses to the 251e the 251e freaks out. The problem as I understand it is that the 281e pulses, which are 15V in magnitude, are too much for the 251e. Note all other pulses in the system are 10V max. Conversely, the 251e is the only module in the system that has this problem.

I have also had trouble using S&H on the 251e to reach the full range, but it was at the upper end.

You could try eliminating the 266e and use another channel of the 251e to produce 0-10V just to check. Also try using pulses from another 251e channel.

User avatar
missingtwin
Veteran Wiggler
Posts: 661
Joined: Tue Jun 02, 2009 11:12 am
Location: Little Rock, AR

Post by missingtwin » Wed Nov 20, 2019 6:26 am

And don’t try to save the delay parameter to a preset. It no worky.
Ah, Buchla

Image

User avatar
Kent
Large Member
Posts: 12020
Joined: Thu Mar 06, 2008 10:17 am
Location: Vienna, Austria

Post by Kent » Wed Nov 20, 2019 7:31 am

Sure would be nice if Ezra Buchla would finish/fix this thing.

User avatar
misa
Ultra Wiggler
Posts: 889
Joined: Thu Dec 29, 2011 4:18 pm
Location: Cologne, Germany
Contact:

Post by misa » Wed Nov 20, 2019 10:04 am

Kent wrote:Sure would be nice if Ezra Buchla would finish/fix this thing.
Then I will buy one!

kainiggemann.bandcamp.com
anterasa.bandcamp.com
gratofficial.bandcamp.com
thedorf.net

User avatar
Drillionaire
Wiggling with Experience
Posts: 377
Joined: Mon Jan 26, 2015 7:35 pm

Re: 251e gremlins (again)

Post by Drillionaire » Wed Nov 20, 2019 11:23 am

dougcl wrote:the 281e pulses, which are 15V in magnitude,
This is only true for early revision 281e modules.

User avatar
dougcl
Number 6
Posts: 4051
Joined: Sat Jul 26, 2008 3:04 am
Location: Portland OR

Re: 251e gremlins (again)

Post by dougcl » Wed Nov 20, 2019 7:05 pm

Drillionaire wrote: This is only true for early revision 281e modules.
No kidding. Good to know!

Post Reply

Return to “Buchla, EMS & Serge”