No, my system is neither warm nor punchy. CAs are generally not warm-sounding. They're fairly neutral-sounding gear, imho. PSB Imagine speaks also do not share the obvious warmth that's in the Image line. Aside from these, the smaller drivers and enclosures make the Imagine speaks less vulgar with the lows, so that answers the reason why it's not punchy.
Sure, it can punch harder than many other systems (having enough power on tap), but it does not have a heavy-handed character at all.
If you want some warmth, you might be better-served by the 650C/650A, if you're looking at Cambridge Audio models. The x50 models have a noticeably fuller sound when compared to the x40 series products. The greater dynamic reserve also allows them to deliver more weight, if needed. Contact Beginner if you'd like some tips with coupling the current PSB Image products with the CA x50 units.