Are you sure that you don't have a couple of 1206-series SMD ceramic capacitors in Jeff's kit? The Bantam BOM uses SMD caps at C11 and C13. That's why the pads are both square and somewhat over-sized. The silkscreen is there for a circular electrolytic at both positions, but that's not the default. The reason being is that the TPS regulators need the ceramic SMD caps, not electrolytics. In the layout image, you can see the rectangles drawn inside the circles, indicating a choice of which type of capacitor you can use. We kept the organic polymer at C12 because that's a critical low-ESR position in the circuit. Here's the layout from the website:
All of the build instructions also show the SMD caps used at C11 and C13:
"Also, C11 and C13 have dual pads for electrolytic or SMD capacitors. The TPS regulators only use the SMD capacitors."
This is from Step 10 on this page:
http://www.diyforums.org/BantamDAC/BantamDACsteps-2.php
Also, the video tutorials show the SMD caps installed here:
http://www.diyforums.org/BantamDAC/BantamDACvideo.php
Yes, they are required and needed for the TPS regulators. Contact Jeff at Glass Jar Audio if you do not have these caps.
Edited by tomb - 1/12/12 at 5:35pm
![DSC_0302[1].JPG](http://cdn.head-fi.org/9/95/955d6919_DSC_03021.jpeg)
![DSC_0305[1].JPG](http://cdn.head-fi.org/9/95/9598904c_DSC_03051.jpeg)
