Bose Speakers

[secondchance]

I was browsing through "the other" forum and stumbled on this thread on C4 Bose system.
Initial post is about disassembling speakers and coating the factory speaker cones w/ mixture of Elmer's wood glue/hot water.
It dawned on me these speakers are 14-20 years old depending on the model year and cones being made of paper back then would be a good idea to do some preventive maintenance.
Paper cones will degrade with age and could disintegrate with time. The flexible surround could also degrade and rip with time but can't do much with that part of the speaker. Nonetheless, I figured it would be better to do this now than wait for the cone to rip at which point would cost between $70-80 (speaker only) depending on whether it's the front or the rear.
So, I removed all speaker/enclosures and removed the plastic grilles. As I suspected, although not torn, paper cone obviously looked faded and tired. Then, per the post below, I diluted Elmer's Waterproof Wood Glue (figured extra protection against moisture) and diluted it with hot water and applied 2 coats allowing the cones to dry between the coats.
After it dried completely I reinstalled them.
First, it's good knowing that I have reversed the effect of aging, possibly leading to speaker replacement, and secondly this procedure seems to have tightened the sound quite a bit (similar to polypropylene cone speakers).
For those who intend to keep the "Bose system", at least speaker/amp part, 3 hours spent doing this may be a good investment.

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