Bathtub Reverb Accu-Bell Effector Upgrade Project

[Tassieviking]

My traces are playing up too since I updated Kicad last time, there must be a bug in the new version.

 

[SamuelG]

Getting the BTR board ready

You may notice I’ve added a CLC choke at the DC input

 

[SamuelG]

The switch with only resistors is a voltage divider to make an attenuation switch for the output

 

[SamuelG]

The inductor for the CLC fit nicely where the reverse polarity diode should go. This diode is wired directly to the DC jack with heavier gauge leads to which the first bulk 220uF cap sits.

 

[SamuelG]

The switch with capacitors is the Fc voicing switch for the wet path. Fc values were chosen to suit the different effects but always leaves the dry analog tube path unaffected

 

[SamuelG]

In parallel to the second cap in the DC CLC choke is a 100nF film cap underneath. Some of my C2CE builds don’t play well together even on isolated outputs on my Cioks DC7 so I’m hoping this will help.

 

[SamuelG]

And now to fixing my pcb mistakes:

 

[SamuelG]

okay this side…

So close but no cigar… out comes the dremel

Output jack is too close to the socket.
Looks like I’ll be making another prototype
I’m hoping to get this one working though!

 

[Tassieviking]

What if you solder the IC directly to the PCB, no IC socket ??

 

[SamuelG]

Great minds think alike sir
That’s definitely part of the plan! That will give me “most” of the space I need. Then I’ll move the jack up and to the right just a little so the 1/4” plug misses that red cap as well.

 

[Tassieviking]

I have started to put the SMD footprint inside the through hole footprint on some of my PCB's, that way I can choose TH or SMD components, just imagine how little space a surface mount IC would use. I haven't tried soldering an OP-amp in SOIC-8 format yet but I have that option on some of my PCB's.
I also made some front panels for some amps from PCB's and I have tiny little SMD LED's just under the knobs so the panel is lit from under the knobs, you have to have all the traces on the back of the PCB or they will show up on the front panel, also a SMD connector on the back for powering the LED's.