Chipamp.com pcb with linkwitz 3875 design

I'm building a gainclone for tweeters and mids using the design shown here: http://www.linkwitzlab.com/images/graphics/3886amp.gif . For Ci, I'm gonna use a 4.7uf cap, but im having difficulty installing it on this chip: http://www.chipamp.com/lm3875.shtml. The problem is that signal ground is connected to both the 20kohm input to ground and the 1k resistor right above Ci. If I put the cap on the signal ground, the cap would be in series with the 1k resistor AND the 20kohm input to ground resistor, which the design does not call for.

How do i solve this problem?

Thanks
Alex