View unanswered posts | View active topics It is currently Tue Oct 21, 2014 11:55 am



Reply to topic  [ 6 posts ] 
Mastermind, Expression Pedal, Timefactor 
Author Message

Joined: Tue Jan 18, 2011 3:03 pm
Posts: 15
Post Mastermind, Expression Pedal, Timefactor
Hi,

I just wanted to pass along some information, in case it might be helpful to other users. I have a Timefactor and Modfactor. I am using an RJM Mastermind for midi control. I have been trying to assign to the CC assigned to the expression pedal to control a function in the Timefactor. I had been using an Ernie Ball volume pedal and an M-audio expression pedal into the Mastermind. With both pedals, I had problems with the Timefactor. For example, when I assign the CC assigned to the pedal in the Mastermind to the Mix knob on the Timefactor, the pedal did not sweep evenly from 0 to 127. I tried numerous times to calibrate the pedal (and yes, I had the polarity correctly set according to the manual), but it always just sweeped erratically through the range. I finally tried a Yamaha FC7. This is a winning combination. Now the sweep from 0 to 127 is even.

So, if you have an RJM Mastermind and a Timefactor, and you are having trouble with other expression/volume pedals, try the Yamaha FC7.

All the best,


Tue Jan 18, 2011 3:07 pm
Profile
Site Admin

Joined: Mon Jan 18, 2010 4:29 pm
Posts: 1443
Post Re: Mastermind, Expression Pedal, Timefactor
Thanks for the info! Do you happen to know the impedance of the two pedals? And, what version of the Mastermind firmware are you using?


Wed Jan 19, 2011 9:06 am
Profile

Joined: Tue Jan 18, 2011 3:03 pm
Posts: 15
Post Re: Mastermind, Expression Pedal, Timefactor
I am using the 1.4 firmware. The volume pedal is the Ernie Ball junior, so I am assuming the impedance is 25k, the value of the pot. I cannot find any info on the m-audio exp. Could I measure the impedance with a multimeter set to ohms and rocking the pedal? I would be happy to do that. Also, I should say that both those pedals worked fine with my G -major 2. And both those pedals worked fine plugged directlybinto the Timefactor. It was just the combination of pedal, mastermind, and timefactor that caused a problem.


Wed Jan 19, 2011 5:10 pm
Profile
Site Admin

Joined: Mon Jan 18, 2010 4:29 pm
Posts: 1443
Post Re: Mastermind, Expression Pedal, Timefactor
Yes, if you measure between the connector ground and the tip, you'll either get a constant value of resistance, or one that varies with the pedal position. (Depending on how the pedal is wired). Please let me know what you find!


Thu Jan 20, 2011 8:11 am
Profile

Joined: Tue Jan 18, 2011 3:03 pm
Posts: 15
Post Re: Mastermind, Expression Pedal, Timefactor
Hi,

OK, I measured the impedance of the M-Audio EXP expression pedal. It is 60K. The pedal also has a switch to shift the polarity, so you do not have to do any rewiring to get the connections to match those in the Mastermind manual. It also has a knob on the side that adjusts the impedance of the pedal to adjust how quickly the pedal goes through its range. I measure with the impedance with the control fully open. With the knob fully closed the impedance was 11K. Hope that helps.

All the best,

and thanks for making some great products.


Thu Jan 20, 2011 4:04 pm
Profile

Joined: Mon Feb 21, 2011 6:14 am
Posts: 8
Location: United States
Post Re: Mastermind, Expression Pedal, Timefactor
Thanks for sharing the useful information with us here...internet radio station


Mon Feb 21, 2011 6:21 am
Profile
Display posts from previous:  Sort by  
Reply to topic   [ 6 posts ] 

Who is online

Users browsing this forum: No registered users and 1 guest


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 post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group.
Designed by STSoftware.
Localized by MaĆ«l Soucaze © 2010 phpBB.fr