Bowtie427ss, how do you like the HIII's?
These are 604-8G's with H III cones in them, the product of "uncle mel" using genuine GPA parts and doing his own work. I've had to do a lot of careful cutting and soaking with MEK to correct the improper dust guard installation on both. Right now they run without the dust guards in place as there is still much work left in removing the old bits of felt and glue from the cones before i can install newt felt. Some suggested just gluing the new felt over the old remnants. But my understanding is that the H III cone is lighter than the others, and my fear is that adding much mass will defeat any advantage the lighter cone weight offers.

Sadly, i sold my only working original 8G before i cut the felt on these recones. The problem with the recones is that the felt was installed with no slack to allow for cone excursion. Any significant LF signal quickly caused the voice coil to go out of alignment and crash in the gap making any kind of listening comparison impossible. It took me a while to get brave enough to cut into these myself. After many months of silence i decided i had little to lose.

My advice to anybody buying Altecs advertised as reconed by anyone other than GPA, get references for the reconer's work before you let go of your money. Don't learn the way i did.