mckyj57 wrote:
Smoothedge69 wrote:
chrisavis wrote:
Again, there is only a single set of gear that is ever at my house. And it usually never comes in the house, it stays in the truck. The discs are another matter though which is why I have considered storing those. I want to find a temp/humidity controlled unit though. Insurance is still being fretted over. Been working on some things with my insurance company, but now ready to re-join the ADJA just for that benefit alone.
I would love to leave my equipment in my truck, but alas, here in Florida electronics would not last too long in a vehicle. The heat would destroy everything. I would LOVE to leave my stuff in my truck. The last ting I want to do at 2:30 in the morning is unload my truck. By then my back has had enough.
Heat isn't what kills it -- it can take a lot. But the heat plus the humidity? That will do a lot.
I am going to see soon what the effect is -- I have been storing my Yorkvilles for 6 months in my garage in Florida. When I get there in December, I am going to want to do a gig. We'll see if they are still in good shape.
As a retired electronics component design engineer (tantalum capacitors wet & dry) all quality components are tested to withstand 130 F and 75 percent humidity and 130% rated voltage for a minimum of 90 days (1980's standards) which is intended to represent an accelerated life test. Early failures (infant mortalities) are analyzed for cause and written up for process, and manufacturing engineering to correct. In some cases the voltage rating is reduced in order prevent scrapping an entire batch.
Environmental test factors can be increased to achieve ISO standards or Milspecs. I am not familiar with today's minimum standards but I would bet that they are similar to the 1980's specs. Electronically capacitors are usually the first components to fail in a circuit and an electrolytic cap failure can cause extensive damage.
Solder joint failure is also highly possible when subjected to high temps and vibration and again those usually occur early, and once past the early failure time frame they tend to be a non-issue. I bet that the temps inside a "hard driven" powered speaker case gets greater than 130 F.
I have stored my equipment in the back seat, and trunk of my car, in my garage, for over 5 years in Florida and I have yet to have my first electronic equipment failure. Today's pro speakers have cones made of cellulose paper, into which various types of fibers can be added. It might also use a layered sandwich construction, or a coating might be applied to it so as to provide additional stiffening or damping. These added fibers and construction techniques greatly add to the increase in the temps (and SPL's) they can handle. Consumer electronics are a different story