mudbunny mids pots too subtle?

[add4]

I finished a ram's head and added the midts pot and while i can hear a difference, i find it too subtle (i'd love to go from no mids to too much miss in one swipe of the pot).
I tried 25kB, 50kB, and 100kB pots and it's still too sublet for me..
Is there problem on my pcb? is it supposed to be obvious? am i tone deaf? or is it a subtle effect from the beginning?
Thanks

[mgwhit]

Adding the Mids/Presence control to the Mudbunny actually requires tweaking the values of other components on the board.  At least C10 and R18, possibly C11 and R19 as well.  I don't think the build doc mentions this.  Check out Jack Orman's AMZ Presence Control article that the whole mod is based on.  Good luck!

[marauder]

Download this
http://www.duncanamps.com/tsc/

It will let you plug in the values you are using and see what effect various resistors and caps in the muff tone have.

[add4]

doesn't work with mac, unfortunately :p
but thanks for the help ... i'll try the amz values

[marauder]

doesn't work with mac, unfortunately :p
but thanks for the help ... i'll try the amz values

PM me some values and I'll get some screen shots for you.

[add4]

Thanks.. but i won't do it in the near future.. i think i'll keep this pedal closed and play with it a bit to see if i actually would like to change that or not .. i really like the EQ of the ram's head in fact, and i'd like to add the miss option without changing the rest of the EQ at all..
I think on the next try i'll just make a separate control for the bass and treble side.

I'm also thinking i could remake the tone stack calculator by myself in matlab or R. writing boring equations in computer is supposed to be my job after all i could make it a little less boring for once.

[marauder]

Did you change R18 to a lower value?
If not the pot wont scoop, only flatten the response when turned up.

Change it to a 15K resistor, then the response will be pretty much stock with the mid pot in the middle using a 50K pot.

Changing C11 to a 15nf will help if you find too many high mids are being scooped.

Just do the resistor swap first and see how you like it.

[add4]

i'didn't change anything at all! i'll try that in a few days and i'll post the results here for more advices or the archives in case someone else has the same question.
thanks

[add4]

Ok guys,
i used this marauder's values in this thread (http://www.madbeanpedals.com/forum/index.php?topic=4038.0;topic seen).
i replaced R18 by a 6.8K resistor and used a 50Kb pot .. it's perfect now! thanks for your help.
i had no idea the resistor had to be changed, but it's logical in fact.. thanks to you all for your help

this pedal is jut great!

[oldhousescott]

I'm not a Mac guy, (we do have a MBP, but my daughter has pretty much commandeered it), but I was wondering if Wine would let you run the TSC. Anybody tried it?