Fresh water, and I’ll mostly be at the dock except for day sails and overnights with my sons.
I got the measurements today. 5 3/4" (146mm) high by 14 1/8" (360mm) wide by 11 3/4" (300mm) deep is what will fit inside the bookshelf area I identified. Otherwise, I could fit slightly bigger speakers that are wall mounted.
The Gallo Acoustics Strada 2 would fit.
The Vandersteen VLR Wood is in my budget (less than $2K) but would require wall mount. They won’t fit inside the bookshelf.
The Spendor A1 is 12.1" x 6.5" x 7.3" (308 x 165 x 186 mm) and that might be the ticket if they sound ok on their sides. I seem to remember a pair of Advents I had in high school that sounded good with the tweeters on the inside and the woofers on the outside while lying on their side. Oh, wait.. they are 3/4 inch too wide. Dang. They'd have to be wall mounted.
The hard part is I know that no matter what, I’m going to loose a lot of soundstage and imaging compared to my incredible LX521 based system. I’m trying to minimize the pain.
Now, I am very familiar with the modern car audio world. I have a Sony XAV-9500ES, Helix DSP.3S, Biketronics BT4180 (N-Core amp), and Audible Physics NZ3 speakers in my Cayenne and it sounds much, much better than any car system I’ve ever heard. However, it’s not in the same league as my current home system. I wonder if I used the Helix/Biketronics for amp/dsp and find a nice analog pre-amp to mate to my Ayre........ You think that would be better than the Audio by Van Alstine integrated? I’ve always been anti-EQ in my home system, preferring location and treatments. I don’t know..... I’m in the in-between world here.