Bossarea Forum
Bossarea Forum
Home | Profile | Register | Serial Database | Active Topics | Members | Search | FAQ
Username:
Password:
Save Password
Forgot your Password?

 All Forums
 Boss Products
 Modifications and Technical Issues
 looking for a CS-3 mod
 New Topic  Reply to Topic
 Printer Friendly
Next Page
Author Previous Topic Topic Next Topic
Page: of 2

Mesjoggah
Gold Member

Netherlands
595 Posts

Posted - 12/02/2008 :  14:23:22  Show Profile  Click to see Mesjoggah's MSN Messenger address  Reply with Quote
Since i've got a spare CS-3 i am looking to mod it, who has a link to one?

Laurie
Double Platinum Member

Canada
4854 Posts

Posted - 12/02/2008 :  14:28:43  Show Profile  Visit Laurie's Homepage  Reply with Quote
Good CS-3 mods are hard to find...

An important consideration is which chip-set you have. What is your VCA? (dBx or THAT) and what op-amps are in it? Is it MIJ or MIT?
Go to Top of Page

Mesjoggah
Gold Member

Netherlands
595 Posts

Posted - 12/02/2008 :  15:00:42  Show Profile  Click to see Mesjoggah's MSN Messenger address  Reply with Quote
It's MIT and it has vca DBX 1252 in it, op-amps are m5218l (2x) and BA718.

Till my surprise this one has a 6 digit made in taiwan label under the treadle, haven't seen that yet! (at least not in my collection)
Go to Top of Page

Dirk
Platinum Member

Netherlands
1309 Posts

Posted - 12/02/2008 :  17:00:41  Show Profile  Visit Dirk's Homepage  Reply with Quote
I can recommend the Monte Allums opto mod.
That's quite good, my pedal has a real tubelike feel now.
One thing I added to the mod is to change D6 to Germanium (1N34A), which adds to the tubefeel.
Oh, and you got to install a yellow LED for added mojo

Question is, what do you want to achieve with it?

Edited by - Dirk on 12/02/2008 17:03:57
Go to Top of Page

Laurie
Double Platinum Member

Canada
4854 Posts

Posted - 12/02/2008 :  17:30:29  Show Profile  Visit Laurie's Homepage  Reply with Quote
quote:
Originally posted by Mesjoggah

It's MIT and it has vca DBX 1252 in it, op-amps are m5218l (2x) and BA718.

Till my surprise this one has a 6 digit made in taiwan label under the treadle, haven't seen that yet! (at least not in my collection)


This is one of the "good" ones. It seems unlikely to me that any mods will improve it substantially...

I have one of these exactly (with the 6 digit made in taiwan label under the treadle) and it sounds the best of the 5 of CS-3s with various chip-sets I've heard first-hand, including my late model THAT chipset one with a Monte Allums mod.

Edited by - Laurie on 12/02/2008 17:32:15
Go to Top of Page

Mesjoggah
Gold Member

Netherlands
595 Posts

Posted - 12/03/2008 :  10:01:49  Show Profile  Click to see Mesjoggah's MSN Messenger address  Reply with Quote
quote:
Originally posted by Dirk

I can recommend the Monte Allums opto mod.
That's quite good, my pedal has a real tubelike feel now.
One thing I added to the mod is to change D6 to Germanium (1N34A), which adds to the tubefeel.
Oh, and you got to install a yellow LED for added mojo

Question is, what do you want to achieve with it?




Actually i just wanted to mod something... but it would be nice if the hiss would go when turning the sustain knob past 10'o clock.
Go to Top of Page

Laurie
Double Platinum Member

Canada
4854 Posts

Posted - 12/03/2008 :  14:55:29  Show Profile  Visit Laurie's Homepage  Reply with Quote
You could buy some of these:
http://cimarrontechnology.com/so8dip8tosiladapterpn060301.aspx

and swap the 5218 op-amp chips (IC1 and IC2) out for low-noise ones (e.g. OPA2134 http://www.smallbearelec.com/Detail.bok?no=584)

Edited by - Laurie on 12/03/2008 15:03:56
Go to Top of Page

Von
Copper Member

Australia
26 Posts

Posted - 12/04/2008 :  04:17:18  Show Profile  Visit Von's Homepage  Reply with Quote
This might help

http://www.vonlehmannengineering.com/BOSS_CS3.html
Go to Top of Page

zerksies
Double Platinum Member

USA
3406 Posts

Posted - 12/05/2008 :  00:02:22  Show Profile  Send zerksies an AOL message  Click to see zerksies's MSN Messenger address  Send zerksies a Yahoo! Message  Reply with Quote
quote:
Originally posted by Dirk

I can recommend the Monte Allums opto mod.
That's quite good, my pedal has a real tubelike feel now.
One thing I added to the mod is to change D6 to Germanium (1N34A), which adds to the tubefeel.
Oh, and you got to install a yellow LED for added mojo

Question is, what do you want to achieve with it?

i second that it is a great mod it makes the pedal sound way better then stock
Go to Top of Page

Laurie
Double Platinum Member

Canada
4854 Posts

Posted - 12/05/2008 :  00:33:36  Show Profile  Visit Laurie's Homepage  Reply with Quote
There was some discussion in another thread about what chipset the Monte Allums mod was designed for - from my experience, it doesn't work that well with a late production MIT/THAT pedal.

The early production MIT and MIJ pedals with dBx chipsets are completely different animals to the MIT/THAT. It is quite possible that the Monte Allums mod was designed for the dBx chipset and will make it sound even better... If you try it and it works, please let us know!
Go to Top of Page

Mesjoggah
Gold Member

Netherlands
595 Posts

Posted - 12/24/2008 :  17:00:22  Show Profile  Click to see Mesjoggah's MSN Messenger address  Reply with Quote
I did the Indyguitarist mod and i am pleased with the result, it has an overall more 'richer' sound.
Go to Top of Page

Laurie
Double Platinum Member

Canada
4854 Posts

Posted - 12/24/2008 :  17:09:36  Show Profile  Visit Laurie's Homepage  Reply with Quote
Thanks for the info!
Go to Top of Page

jfromel
Copper Member

USA
11 Posts

Posted - 12/29/2008 :  10:42:07  Show Profile  Reply with Quote
This is what I did with my CS-3, it's very happy now. All 1u caps are film, in fact all the caps are film except C5 which is Mica. C1 in this list refers to C1 on the board attached to all the pots.

D10 JUMP w/R32
C2 47n
R32 JUMP w/D10
C17 1U
D2 1n34A
D3 1n34A
C14 1U
C15 1U
C4 1U
R5 3.24K
C5 430P
C6 1U
C7 10n
C1 100n
C9 10n
D6 1n34A
C10 47n
C15 10n
C16 47n
C18 10n
R36 3.24k
Go to Top of Page

cctsim
Silver Member

United Kingdom
418 Posts

Posted - 12/30/2008 :  04:43:04  Show Profile  Reply with Quote
Just a minor suggestion: C10, C16, and C18 are part of the on/off flip flop and do not affect the sound in any way, so it is a bit pointless upgrading these caps.

Even worse, by increasing C18 you decrease the response time of the switch.

Go to Top of Page

Mesjoggah
Gold Member

Netherlands
595 Posts

Posted - 12/30/2008 :  06:32:03  Show Profile  Click to see Mesjoggah's MSN Messenger address  Reply with Quote
This is what i did:

R36 - 100 ohm
C2 - .1 uf
C1 - .22 uf
C13 - 2uf/2.2uf film
R5 - 470 ohm
R32 - jumper
D10 - jumper

C4 - 1 uf film
C14 - 1 uf film
C17 - 1 uf film
C6 - 1 uf film
Go to Top of Page

ElfegoBaca
Copper Member

USA
20 Posts

Posted - 01/01/2009 :  07:51:31  Show Profile  Reply with Quote
Hey Mesjoggah!
Hello! I'm interested in seeing what I can do to improve the response of my MIT CS-3 as well, this particular pedal project has been the least rewarding of my pedal mods: haven't had any noteworthy gains in my recent attempts. There are some new differences in your approach that I would like to experiment with, and ask you about, particularly the C1 change from 100uf to .22uf. This is the main board not the pot board, right? Still a 16v NP electrolytic? Any help is mucho apreciado! Thanks!
Go to Top of Page
Page: of 2 Previous Topic Topic Next Topic  
Next Page
 New Topic  Reply to Topic
 Printer Friendly
Jump To:
Bossarea Forum © 2005-2007 BossArea Go To Top Of Page
Powered By: Snitz Forums 2000 Version 3.4.06