Voice coil rub with use / heat or magnet shift.

pkquat

I finally swapped my 11t's with TL's. I hadn't given the TL's much time or a work out since I purchased them. After they were paying for a shorter while, some sounded off/scratchy for stong bass with little else. Sure enough, when I lightly pressed the driver, or the PR's I heard scratching. I guessed that while I was careful in moving them, and never dropped them, a magnet must have shifted.

I waited a day to swap it with one from the 11t's. When I pulled it out, and checked again, nothing rubs. I have to press only on one side to get it to rub. The magnet looks centered measuring it to the steel disks. I swapped the drivers anyway and the bad one does not make a sound in the 11t's when I press it or the PR's.

I am guessing it must be use / heat related and and looking for confirmation. Is there any fix for this?

ken brydson

Try flipping them 180 degrees and test. Seems like I've heard that works sometimes.

pkquat

It didn't work. I am guessing something was out of alignment from stock, or maybe the magnet moved a little at some point, but not enough to lock it. I tried it in all 4 positions. Once it played for a very short while at even a moderate volume I heard some scratches. I gave them a decent workout when I bought them, so idk what is up. I played with it more out of the cabinet and it seams like the rub is 90 degrees off normal orientation (never had them on their sides). I'll look for a used 6510 and maybe karma this one to magnet shift repair if its possible or to whoever wants to try something to fix it.

FestYboy

I'll give it a shot...