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copper
Bronze Member
USA
73 Posts |
 Posted - 03/13/2009 : 02:01:55
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Sorry I don't hang around here a lot unless I have something to say or need help cuz I know you all love me 
On topic, I've been recently trying to do various mods to make my CE-3 sound the best it could because I think its stock form is somewhat disappointing. Here's all the mods that have been done so far. Schematic for CE-3 and CE-2 are at the bottom:
9v conversion
I've removed C29 on the CE-3. Smoothed the sweep slightly.
Jumpered R51. Smoothed the sweep a little more.
Changed C21 to .033. Feels like it warmed up a little and there was a little more presence.
Changed all 1uf aluminum electrolytes to 1uf metal film. Reduced noise and more hi-fi.
And today I experimented with the input capacitor/resistors. I changed it to CE-2 spec (order and values). I found it was too bright more my tastes. So I changed the cap to .15uf (.1 uf and .047 cap in parallel).
I think I'm starting to like this pedal. If anyone else has any mod ideas, please let me know. I'm looking to mod this pedal into something I like and would use, simply because it didn't sound amazing. Still doesn't sound amazing, but I think it's getting there. Maybe swapping out IC's for higher quality ones would improve noise and tone issues? Let me know. Thanks for all the mod helps 
CE-2:
http://acapella.harmony-central.com/forums/showthread.php?t=2267693
CE-3:
http://www.synthdiy.com/files/2007/bossce-3.jpg |
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cctsim
Silver Member
United Kingdom
418 Posts |
Posted - 03/13/2009 : 02:18:10
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To lower noise upgrade C3, C7, C8 and C13 to 1uF metal film (as you did).
Upgrading IC1 and IC2 to better specs also helps. Burr Brown OPA2134PA is a good option. |
Edited by - cctsim on 03/13/2009 02:28:06 |
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leslav80
Copper Member
15 Posts |
Posted - 04/02/2009 : 01:50:27
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Hi guys,
I have done those changes to my CE-3 and I must say it sounds great! One thing I have changed according to your instruction - I have used 1uF tantal capacitors instead of metelized.
Thanks a lot for your experiments!
I will post some pics showing where exacly are located parts that needs to be changed in this mod - my CE-3 haven't caps and resistors numbered on pcb, so it was not easy to locate them.
Update:
OK, I have these pics, so if someone wants it - PM me. |
Edited by - leslav80 on 04/03/2009 13:47:15 |
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cctsim
Silver Member
United Kingdom
418 Posts |
Posted - 04/03/2009 : 14:54:51
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Hi leslav80,
You could post the pics in this thread for the benefit of other members of the forum.
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 04/03/2009 : 17:36:20
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Hi leslav80
Upload them with the "Insert an image file"
in the bottom of the post window.
If they don't display - I will add the HTML code snippet for you.
Please try to keep the files to under 300K, in case you get a Server Timeout.
You might have to use an image editing application to scale them down a bit.
If you're not sure, no problems.
PM me, & I will give you a gmail account to mail them to.
Regards Dr. Bob  |
Edited by - Dr. Bob on 04/04/2009 03:28:14 |
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leslav80
Copper Member
15 Posts |
Posted - 04/03/2009 : 23:48:21
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OK here they come!!
Image display code added by moderator.
leslav80 - click on edit to see the HTML, copy this for future reference, just change the file name.
Download Attachment:  ce3_ 005.jpg 50.88�KB
Download Attachment: ce3_ 008.jpg 61.41�KB
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Edited by - Dr. Bob on 04/04/2009 03:26:53 |
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ChristoMephisto
Platinum Member
Canada
1288 Posts |
Posted - 04/04/2009 : 02:02:17
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Theres always the standard ones like reducing R52 to 470k to double the available Rate and C25 to 100pf to shift your Depth.
To get a 'vibrato' effect, put it Mode II and a jack in output B and the wet sound comes from output A |
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copper
Bronze Member
USA
73 Posts |
Posted - 04/07/2009 : 05:54:38
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Woah, your C21 is in a weird place.
My C21 is where you see the 2 capacitors in parallel:
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bassinyourface
Bronze Member
France
76 Posts |
Posted - 05/02/2009 : 11:46:04
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Thanks for this great mod Copper !
Before trying this mod I thought the CE-3 was an OK pedal - nothing to go crazy about.
My resurrected CE-3 sounds really great for guitar and bass.
I could'nt find a .033 cap in the house so I soldered a .022 and a .015 F in parallel - I guess it doesn't make that big a difference.
I replaced the 1uF electros with tantalums.
I replaced C25 for a 240 pF Mica Silver Cap (I had done a similar mod to a CH-1 before,so I knew I needed a 200+ pF Cap so I could also use it with bass)
The chorused sound is much more natural and deep and the metallic overtone is now gone.
By the way,my pedal also has C21 in "a strange place" and barely any indications on the board so the photos were a huge help.
Thanks a lot ! |
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copper
Bronze Member
USA
73 Posts |
Posted - 05/08/2009 : 04:49:10
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| For C21, are you all sure you're looking at the right cap? The one you guys are indicating is a different value of the stock C21 (.068 uf) on my pedal. I've traced the schem. several times and I'm pretty sure it's the one I found. Maybe the pedals are different, but I don't think they would be. |
Edited by - copper on 05/08/2009 04:49:43 |
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bassinyourface
Bronze Member
France
76 Posts |
Posted - 05/08/2009 : 11:42:55
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Hi there !
I didn't retrace the schematic,but I replaced the cap that was in the closest location.
It seems like my board is a different version.
I'll include photos if I can upload them properly.
Tell me what you think and by the way thanks a lot for your concern !
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bassinyourface
Bronze Member
France
76 Posts |
Posted - 05/08/2009 : 11:47:22
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OOps, hope I got it right this time ...
Large picture resized by Moderator
Original file (CE-3_1.JPG) left untouched, new file name (CE-3_1r.JPG)
Sorry for the poor quality of the photo. |
Edited by - Dr. Bob on 05/08/2009 14:51:25 |
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bassinyourface
Bronze Member
France
76 Posts |
Posted - 05/08/2009 : 11:52:45
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Hey copper,you are right  I replaced the wrong cap
Thanks a lot for your double checking ! |
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bassinyourface
Bronze Member
France
76 Posts |
Posted - 05/09/2009 : 17:41:01
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Having replaced the wrong cap I now have a new sound when I use mode II :
The attack is slightly squeezed and delayed like a compressor in an extreme setting and then it evolves and becomes slightly detuned and then back in tune.
May not be useable for a whole song but fun if used sparingly.
By the way Copper,do you know what the original value is for that cap ??
(mine is gone - just wondering so I can restore the pedal to its original state someday)
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copper
Bronze Member
USA
73 Posts |
Posted - 05/10/2009 : 17:06:20
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^^^
The value of the cap you incorrectly replaced was .0068 uf. |
Edited by - copper on 05/10/2009 17:15:08 |
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bassinyourface
Bronze Member
France
76 Posts |
Posted - 05/11/2009 : 10:58:15
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Thanks a lot !!  |
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Update on current CE-3 mods
ce3_ 005.jpg
ce3_ 008.jpg