You guys have got me thinking if I should not after all keep my Fs.
Concerning the renovation of the fs, i use to make speakers and even sold a few so I know that even the smallest changes can modify the original sound of a speaker. The changes which were made are the following;
1) The foam inside the cone and the surround (suspension) of the cone has been replaced by the exact same foam by a technician who has been doing this for years.
2) the top is now bolted to the bottom with four bolts instead of only two
3) the amp is now connected directly into the cone instead of in the bottom connectors placed at the back it the cabinet, so the inside wiring is no longer used
4) the connectors on the cone have been changed for modern connectors (I've tried many while I was making speakers and I chose the most neutral ones IMO )
5) the quantity of the damping material has been slightly reduced after several hours of testing (two inches were taken at the top)
So you see I've kept the changes to a minimum. I know there is some guy who restored them by changing the cabinet completely (type of wood and thickness of the walls - the result is not an ohm f anymore since it is impossible that with such changes the speaker sound anything ode to the original Fs.
Concerning the renovation of the fs, i use to make speakers and even sold a few so I know that even the smallest changes can modify the original sound of a speaker. The changes which were made are the following;
1) The foam inside the cone and the surround (suspension) of the cone has been replaced by the exact same foam by a technician who has been doing this for years.
2) the top is now bolted to the bottom with four bolts instead of only two
3) the amp is now connected directly into the cone instead of in the bottom connectors placed at the back it the cabinet, so the inside wiring is no longer used
4) the connectors on the cone have been changed for modern connectors (I've tried many while I was making speakers and I chose the most neutral ones IMO )
5) the quantity of the damping material has been slightly reduced after several hours of testing (two inches were taken at the top)
So you see I've kept the changes to a minimum. I know there is some guy who restored them by changing the cabinet completely (type of wood and thickness of the walls - the result is not an ohm f anymore since it is impossible that with such changes the speaker sound anything ode to the original Fs.