Increase low end response from CE-2 Clone

Eightsevenzero · Post by **Eightsevenzero** » 16 Jun 2022, 13:24

I recently built a Cephid chorus from PedalPCB (CE-2 clone). Works great and all component values were tested before building to make sure everything was in spec. I compared it to a Danelectro Cool Cat 18v (cs-505 clone) and the cool cat had a bit more bass response which I tend to favor. Does anyone know what caps I should modify to get a bit more bass response out of a ce-2? I have attached a schem. Thanks!

Ichabod_Crane · Post by **Ichabod_Crane** » 16 Jun 2022, 14:41

The C12 cap is critical for the bass amount in the wet signal.
For the CE-2 (for guitar) is 33nF, in the CEB-2 (for bass) the low end are slightly cut for a more focused lowest notes, and it use a 12nF, indeed.
In the CE-3 that cap is a 68nF. In the CE-5 (a bit different because the chip) there's a 1uF.
So, you can make some experiments with that cap, but I don't know how many difference you can hear.
I can't tell you more than it, but let us to know.

karul · Post by **karul** » 16 Jun 2022, 17:34

C14 on the BOSS CE-2/CE-2B schematic, C21 on CE-3, C17 on pedalpcb

CE-2/CE-2B
viewtopic.php?t=4862&hilit=boss+ce+2+bass

CE-3
viewtopic.php?t=471

https://www.electrosmash.com/boss-ce-2-analysis

Eightsevenzero · Post by **Eightsevenzero** » 16 Jun 2022, 18:54

Thanks!

karul · Post by **karul** » 16 Jun 2022, 21:37

You are using it with bass or guitar? For bass you may consider implement the effect level pot (turning it in CE-2B), insert 250k pot between C17 and R35. For guitar there were some mods, take a look over here:
http://www.tonepad.com/getFile.asp?id=101

There were some other mods like led LED blinking at the same rate as the LFO etc..Search you will will find them.

Eightsevenzero · Post by **Eightsevenzero** » 16 Jun 2022, 23:49

Guitar only