Hey guys,
i finally own a JBL GTI MKII 12"
BUT : something has gone wrong with it.
The first enclosure was a 2.25 cuft ported that sounded
ok till it blew apart, that's when the the GTI started to make
mechanical " bottoming " sounds.
So we tried it in free air before building a new sealed enclosure
just to test it, it seemed fine running in the open so a sealed
1.2 cuft box was built.
It sounds amazing until a certain power level is reached and the awful
noise rears it's ugly head again which has me turning down
the bass control instantly because it is a LOUD scary " WHACK ".
The amp is an Audison UNO and the gti runs at three ohms, so
it is seeing approx one thousand watts.
Im hoping someone out there has experience with the GTI's and
can point me in the direction of what to inspect :
- a separated spider ?
- voice coil former separated from spider ?
- something else ?
i just hope that this amazing woofer is saveable.....
thanks !