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DIY Stompboxes => Building your own stompbox => Topic started by: MovingInSloMo on October 24, 2008, 11:42:34 PM

Title: any mods for a boss ce-3
Post by: MovingInSloMo on October 24, 2008, 11:42:34 PM
same 'ol reviews and I agree... NOT ENOUGH DEPTH! Plus one review mentioned changing old capacitors might help the sound. Any mods I can do to this thing? I wanted a ce-2 way back when I bought it about 6 years ago, but the ce-3's were cheaper. I hardly ever run it stereo
Title: Re: any mods for a boss ce-3
Post by: Andre on October 27, 2008, 05:32:56 AM
You can increase depth by adding a 47pF capacitor parallel to C25.
Even better is to make it switchable like this:


p5        IC4           p7
|                          |
|          47p          |
|______||______|
|            ||           |
•          C25         |
  \                        |
   \                       |
o  \                     |
|_____||______|
            ||
          47p

Crappy drawing, but I hope you get the idea.
Title: Re: any mods for a boss ce-3
Post by: Mark Hammer on October 27, 2008, 10:14:37 AM
"Old capacitors" :icon_rolleyes:  Honestly, kids today...... :icon_mrgreen:

YES, age has a drying effect on capacitors, but you have to consider the production of caps at different points in history too.  A CE-3 does not use the same kind of caps as pedals made during the 60's and 70's.  Personally, I would not consider these old enough to warrant replacement.  Of course, caps are caps, regardless of age, and have fairly "generous" tolerances.  So, replacing a cap with something that actually lives up to the value it states on the outside can sometimes help.

André is right, though.  Different manufacturers situate their chorus pedals at different points in the delay range that produces "the chorus effect".  Often, although slightly longer delay times will provide a pleasing "thickening" of the sound by staggering wet and dry further apart, pedal-makers will elect to be more conservative and lean towards shorter delay ranges, simply because it avoids a number of noise and filtering issues.  If you are willing to accept the noise risks, then André's drawing is what you do.  Personally, I'd be a little more conservative, and use 22pf or 33pf, rather than doubling the cap value right off the bat.  Happily, if you identify the pads for that cap on the back of the board, you can temporarily tack an extra cap on the copper side, see if you like what it does, and try out other values before settling on any permanent change, or drilling of holes for toggles.
Title: Re: any mods for a boss ce-3
Post by: MovingInSloMo on October 28, 2008, 09:00:06 PM
K gonna have to learn some schematic reading lol
Title: Re: any mods for a boss ce-3
Post by: joelap on October 29, 2008, 12:26:51 PM
Replace the input FET stage with the BJT input stage of the CE-2.