So, after my recent success with the Ibanez BC9 Bi-mode Chorus, I decided to revisit my original CS9 project and resolve some mistakes I made in the first design. This version is just a simple CS9 clone with an added vibrato mod (dry kill). This is the 6th CS9 derived circuit I've built, so, I think I'm good on this one for the rest of my life ;D
I repurposed the box from my version 1 build. It's a no-film on a Tayda powder coat.
(https://imagizer.imageshack.com/img923/4665/5yZvYh.jpg)
(https://imagizer.imageshack.com/img924/5879/HEHlEW.jpg)
(https://imagizer.imageshack.com/img923/4845/H85KQ9.jpg)
Gorgeous. Killer work! Glad you were able to sort out the issues on this one!
Fancy!
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Spiffin' top shelf stuff! Very cool! 8)
Thanks guys! 8)
This is one of my favorite circuits. I really appreciate the gate in the design. I've been wondering if maybe adding it to something like a flanger might be cool. I use flanger on my bass and it's always bugged me to hear the LFO whining when I stop playing. The A/DA is the only flanger I'm aware of with a gate.
I've likely said this before but the design is amazing, really enjoy it. The knob choice sets it off a treat.
Didn't know this had a gate, I always wondered if the Bad Stone had a gate due to how the LFO sounded when it kicked in with playing. Schematic says no but it seems to restart the LFO each time. Gonna need to check this one out!
Great build and great looking layout too. I need to mess around more with choruses... chori?
The color is a cool nod to the original as well. Very nice indeed.
Thanks, fellas! 8)
Quote from: storyboardist on June 30, 2022, 07:19:08 PM
Great build and great looking layout too. I need to mess around more with choruses... chori?
This one is very close to a CE-2 (one I know you've done, recently), the important exceptions being the adjustable clock frequency and the noise gate on the delay line.
Hot damn ;D! This is cool as hell.
Great build indeed! And a really great PCB design. You've become a KiCAD master !
I've always regret my original CS-9...
Could you please share you're schematic ?
Looks great and I can't wait to build one of these up too! I very well may borrow your artwork as well. ;)
Quote from: zombiesonore on July 01, 2022, 05:27:51 AM
Great build indeed! And a really great PCB design. You've become a KiCAD master !
I've always regret my original CS-9...
Could you please share you're schematic ?
Sure thing, I can send you files or a board if you want. PM me.
Quote from: Bret608 on July 01, 2022, 03:33:12 PM
Looks great and I can't wait to build one of these up too! I very well may borrow your artwork as well. ;)
Thanks, Bret! You're more than welcome to use what ever.
Quote from: Bret608 on July 01, 2022, 03:33:12 PM
Looks great and I can't wait to build one of these up too! I very well may borrow your artwork as well. ;)
The artwork really is great.
<squeaky voice> Thankyouverymuch </squeaky voice>
I'll pm you.
Look good!
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The schematic is attached. I used a TL022 for the LFO in my builds not the TL062 in the schem.
This is awesome! Do you have a demo? Also have you ever done the dual output on any of your CS9 builds? I am interested in building this if you ever plan on releasing the pcb and/or build notes. I've been searching online for a CS9 build for a bit when I stumbled upon on of your older posts. Anyway, great work!
I never tried to do a stereo output. The schematics are available and I don't think it would be difficult to implement. It required another op amp. I just never use stereo outs, so, it was something I left out to save space.
I did a demo of the BC9, which sounds similar:
https://www.madbeanpedals.com/forum/index.php?topic=33837.msg325005#msg325005 (https://www.madbeanpedals.com/forum/index.php?topic=33837.msg325005#msg325005)
I have some boards available if you are interested. PM me.
Looking sharp, as usual. I'm a fan of the CS9 after a friend asked me to build him one because apparently John Scofield uses one. This was right before they started up with the reissues, I believe.
This and the FL9 flanger seem to revolve around the same circuit, but the LFOs have different speed ranges and the feedback loop. I wonder if there could be a happy medium in the LFO to make a twofer out of this. Then you would have the LFO delay control as well. As for the feedback loop, I would make it to where you get positive or negative feedback by running through a JFET out of different legs like on the Lovetone flange. One last tweak would be to have a blend knob that goes from 100% dry to %100 wet like Madbean's Florist. On an unrelated note...I might have to fire up Eagle...no reason at all...
Quote from: diablochris6 on July 23, 2022, 04:12:03 PM
Looking sharp, as usual. I'm a fan of the CS9 after a friend asked me to build him one because apparently John Scofield uses one. This was right before they started up with the reissues, I believe.
This and the FL9 flanger seem to revolve around the same circuit, but the LFOs have different speed ranges and the feedback loop. I wonder if there could be a happy medium in the LFO to make a twofer out of this. Then you would have the LFO delay control as well. As for the feedback loop, I would make it to where you get positive or negative feedback by running through a JFET out of different legs like on the Lovetone flange. One last tweak would be to have a blend knob that goes from 100% dry to %100 wet like Madbean's Florist. On an unrelated note...I might have to fire up Eagle...no reason at all...
Thanks DC! 8) I did a first version of this with the blend circuit from MB's Pork Barrel, but I never really got it to work right (link below). Alas, Bean is way better at this than me. This version, I wanted to strip it down but give the vibrato option. As far as blend knobs on choruses go, for me personally, I end up setting them at ~50% or 100%.
I've been looking at the FL9, recently. I was wondering if the gate from the CS9 would be a nice addition. I'd guess that took it out for space, but in a 1590BB, I'd like to add it. Another thought I've had is a 2 LFO FL9. I did the BC9, not too long ago, and it came out really good. I'd like to hear what a flanger sounds like with that set up.
I'm using KiCad now, but if you need any flies from me to get started, I'm happy to send them.
First Version: https://www.madbeanpedals.com/forum/index.php?topic=33035.msg317647#msg317647 (https://www.madbeanpedals.com/forum/index.php?topic=33035.msg317647#msg317647)
BC9: https://www.madbeanpedals.com/forum/index.php?topic=33837.msg325005#msg325005 (https://www.madbeanpedals.com/forum/index.php?topic=33837.msg325005#msg325005)