Hello Jade,
The holes in the bottom do go through, so I closed the holes with wooden plugs. Otherwise I turned them into (small) ported speakers instead of sealed ones.
I tried the Stillpoint Five under the Dunlavy SC-VI. Both I and an audiophile friend listened A-B-A and did not like the effect. They sound better, in my system and room, with the BDR mk.4 puck-cone-puck combinations. With the Stillpoints there was a shift to higher frequencies, a shortening of harmonics, and decrease of front attack of piano notes. We tried adjusting the positioning of the speakers, but the BDRs always sounded better. So twice, I took the stillpoint 5 out (all eight of them 4+4) and I am back to the BDRs.
Cheers,
VPN