Join Date: May 2005
Location: St Pete, Florida
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So wait a minute. You had a new driver installed in your car, and this shop delivers it to you already blown? The way you wrote your post, it sounds like you just had it installed, then they damaged it, then they give it to you...
BTW, if it's a dual voice coil (VC) driver, it is just two windings on the same bobbin. Essentially, to replace one, you have to replace both. And it's typically not a user replaceable part. Generally what happens is that the entire surround, cone and VC gets replaced as one unit, not just the VC by itself.
Also, I'm no expert on blown drivers (as I only blew one years ago as a kid), I do not believe that you can "hear" a blown coil. Either it works or or it doesn't. If the winding is burnt, it will make no sound at all. If it's a dual VC, then one will be silent and the other will play like normal. The other thing could be that the driver was asked to travel too far and/or beyond its Xmax, causing it to bottom out or stretch the entire suspension system out of alignment in which case it wouldn't matter which winding received a signal. Both windings would cause the cone to move, and if the bobbin/suspension system is damaged, you would hear the bobbin rubbing/scratching on the side of the pole piece or gap.
In either case, if this is a brand new driver that you have not even used yet, and the clowns at that audio shop blew the driver, it's their responsibility to replace that driver on their dime, NOT yours.
This is one of the many reasons why I always installed my own systems. I would never trust those punks with my cars/equipment.
"I don't care if he's Mohamed "I'm Hard" Bruce Lee!" - Brick Top Polford: Snatch