They are oak/black hard to see in photos. Price now includes shipping to ConUs. Stands are not included I don't think anyone would want then anyway they are ones I modified, reasonable priced stands can be found at Skyland for these speakers.
Due to unforeseen circumstances I'm selling my Dutch and Dutch 8c. All original items including boxes. These speakers are only a few months old asking $7800. They will need to be strapped to a pallet and shipped freight. PayPal add 3%.
This has a DAC so you could connect to subs and an amp.
You can also use passive filters to block low frequencies from the bookshelf speakers. You can get them in 80hz or 100hz. Put one of these behind each speaker connected to the speaker wires. Cheap solution if you don't want to get into active crossovers...
Adam Sub7 and Sub8 have a fixed high pass at 85hz or you can passthrough. If 85hz would work for you the Sub7 is $700 the Sub8 $900 but you can find used or b stock cheaper on Reverb.
Edit: Cheaper Presonus Temblor T8 has a fixed 80hz HPF. They're about $350
Have you considered active speakers? I've seen a new company, GGNTKT have active speakers at €5750 including vat which leaves 4250 for preamp and kitchen speakers. I've never heard these speakers but the measurements look pretty good and you could give them a listen...
When I saw the topic I wondered will it gloss over the influence of slave states and their threat of not ratifying the constitution if the President was elected by popular vote ? Your link is a good article. The threat also extended to another abomination the reason for the 2nd amendment.