Step 1: Measure the Thiele-Small parameters of your drivers using the
DATS v2 or similar. You should also get a
calibrated measurement mic to measure the response of the drivers.
Step 2: Model bass response of the woofer with those T/S params using WinISD or similar.
Step 3: Build a test box. Load up the drivers. Be sure to put a capacitor on the tweeter so you don't damage it during sweeps. Measure the response of the drivers in the cabinet.
Step 4: Design a crossover with appropriate phase alignment and baffle step compensation, paying special attention to ensure the woofer's breakup mode is at least 15dB down. Notch filters to flatten peaks as needed.
See this page for more info.
-or-
Trash your Bose drivers and go with a proven DIY design where someone else has already done all the design work, trial and error, and found 2,000 ways not to make a lightbulb. One of the cones (in "2.pdf") looks warped and water damaged anyway.
DIY Sound Group,
Madisound,
Parts Express,
Meniscus Audio,
Selah Audio,
Melby Audio, and many other companies sell kits of speaker drivers, crossover components, and plans; and some even offer CNC machine-cut flat packs for the speaker cabinets. Ultimately, not having to waste money on trial and error, buying collections of crossover components you'll never use (or making multiple orders, paying shipping each time you want to try a new resistor value or try substituting a polypropylene cap for an electrolytic, etc.), not having to buy equipment to measure the speaker parameters, all serve to support this assessment: you'll spend less money and end up with better speakers by starting from scratch.