Isolating Crossovers

After Christmas I'm going to build my first loudspeaker kit and have thought about isolating the crossovers from cabinet vibration. Most articles about vibration mention that loudspeakers contribute to the vibration felt by other components so I suspect that components (e.g., crossovers) within the speaker box are subject to lots of vibration. The kit instructions say to stick (crossover circuit boards have double-sided tape) the crossovers to the cabinet panels with the option of using screws to solidify the mounting.

I have a sheet of 1/8" EAR Isodamp C-1002 which I thought of cutting into appropriate pieces and using between the crossover boards and the cabinet walls. Isodamp is a wonderful material for damping vibration.

Thus my questions: Does vibration affect the output (i.e., audio) of crossovers? Would isolation from cabinet vibration, in this way, be of any benefit?

Thanks, Ken.
Yes, it would be better to have the crossovers outside the speaker entirely. My Spendor S 100s have a modular crossover bolted to the back of the speaker by the binding posts and if I do not go to an electronic crossover I am going to remove it from the enclosure eventually. Look on some of the DIY sites for more info on this. There is a lot out there.
Outboard crossovers sound better. Direct mechanical coupling of the outboard crossover is another audible improvement that can be easily applied. I have used these methods previous including the Dunlavy SC4's speakers..Tom
Something to keep them from vibrating sounds like a good idea to me also.
Some of the best speakers in the world do not isolate the crossovers.
Some of the best speakers in the world do not isolate the crossovers.
And some do, such as Wilson. Also, some of the top of the line crossover part manufacturers such as Duelund and Claritycap "pot" their capacitors, inductors, and resistors for better sound.
Some Wilson Audio,Audes Orpheus,and Sonus Faber use isolated crossover systems from what I remember.
Thank you, everyone for your comments. While I agree that the best choice would be to have the crossovers outside the cabinet I'm not yet ready (knowledge-wise, technically and otherwise) to take that step. I am going to use EAR Isodamp to isolate the crossovers; I have the product, it is a simple procedure and it should be much better than not doing anything. I'm a bit surprised that, while most people agree that vibration is harmful to (or at least not good for) the audio signal, it seems very few manufacturers of all types of high-end audio equipment incorporate any vibration isolation product(s) in their components. It would seem sensible to do something!