Hi fellow Spendor D9 owner! My room is approx 14x9 and I previously had D7 speakers in there. Trust me, the D9s will open up drastically after the first few days, and they will keep doing so for a few weeks. I expect you'll be enjoying the shockingly good mid-range from these units. The mid range unit is on top (as you know), but it's also in a sealed enclosure, separate from the other drivers. The sound is vastly different to the D7. I've never heard anything like it before.
I've got a Chord 3650 powering mine. I'd be curious how much deep presence of bass you can hear from your amp.
I've got a Chord 3650 powering mine. I'd be curious how much deep presence of bass you can hear from your amp.