I'm new here, having just bought my first Hi-fi car audio system (well, first since my MUCH younger years)
My question is: Is there usually a 'break-in" period for new speakers?
The reason I ask is, I just bought and installed a whole new system from Crutchfield, and things worked pretty well at first... By at first, I mean for the first 20 minutes or so.
Here's the system I bought:
Front spkrs: Alpine SPR-50C's (100W)
Rear spkrs: Alpine SPR-60C's (110W)
Amp: Alpine PDX-V9 5 ch (4x100W, 1x500W)
Sub: none yet
I set the gains according to the directions, which was to max the head unit volume, and turn up the amp gain until that channel started to distort, then back off a bit. I did this for fronts, and then rears. I set the amp cross-overs to HP at 120Hz or so.
I had my sons old sub that I connected, just to temporarily get the base, and set the cross-over for that to 120Hz.
Things sounded good all around, so I started to crank it up and listen to some Rush & Van Halen. I ran it for about 15-20 minutes, enjoying the whole **** thing. Then, I started to notice a slight burning smell... Figured this was normal as the crap burned off of all the surfaces.
Well, very quickly, things started to sound very distorted on mid-low bass notes. So I shut it off, and grumbled. I took out the front speaker that was sounding distorted, and saw that the metal cone in the middle of the speaker was rubbing against the speaker mesh... The reason for this seems to be that the adhesive on the cone seems to have melted/failed, and the cone slide down to where the speaker mesh is now rubbing against it. I looked at the other 3 speakers, and they all did the same thing to some degree... ie: the metal cone is no longer centered.
I called Crutchfield, and explained it to the tech guy... He said that I needed to break-in the speakers for 3-4 weeks at lower gain settings, and that is what caused the problem. I've never heard of this before. Is this true, or did I just get a bad set of speakers with improperly cured adhesive or something? Or did I do something else wrong? I'm pretty sure I didn't drive the speakers past their rating, as the amp is rated at 100 Watts/ channel... each channel was connected to one speaker, and the speakers are 100W/110W.
To Crutchfields credit, they are sending me new speakers right away. Alpines were always very good speakers back in the day, and seem to still have a good reputation, but I am nervous about this. If it was my mistake, I don't want to make it again... But if not, I don't want to have the hassle of dealing with poorly made speakers.
Any thoughts or suggestions?