Originally Posted by blueraven316

We have opened up quite a few 2 year old installs we have done with crossovers in the same position behind the pad, no rust or anything, the only thing which is prone to damage is the speaker ring which is made of MDF and absorbs moisture, hence has to be changed every year or so depending on the moisture accumulation.

what you should do with those MDF speaker spacers is to actually after mounting the spacers and before mounting the speaker driver is to coat them with a layer of fibreglass resin, this will actually prevent any moisture penetrating them and maybe make them last a bit longer than usual

maybe one coat of resin on the back of the ring and the inside surfaces, then another coat to be painted on after they are mounted, then allow this to dry and then mount the speakers, it might increase your installation period but if the owner is serious about the install lasting a decent amount of time then he probably should not mind

to speed up the drying time of the resin you could maybe use a bit of extra hardener/activator instead of using the recommended amounts ie number of drops per bottle of resin, a couple of extra drops will make it dry quicker but do not mount the speaker driver till the resin dry's

its also a nice method to use for the longer installs ie you finish the work on the other bits of the vehicle ie the trunk/boot/hatch install bits while the resin dry's on the front stage stuff

[blueraven316]

Yeah, that works really well, have done it for some installs, but most people in India dont really give us more than 3 to 5 hours preferably to work on the car, so that becomes tough to do, however Me as an installer would love to throw in some fiberglassing and damping wherever necessary makes our work look and sound better.