The bookcases will definitely be Ikea, and probably the Billy model. I have a couple disassembled in the garage but I haven't been able to find them yet. That, in itself, is alarming.

Mark, the colour between your speakers and bookcases seems very well matched. I assume those are Mansfield Beech speakers; what model & finish are the bookcases ?

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8