Hi Sashav,
Apologies for replying to a post that is now nearly 14 years old, but I’m engaged in some ‘loudspeaker archaeology’ and am taking a long-shot. I have some old FB1s that I’m in the process of upgrading to FB1+. This is difficult, as even PMC don’t know all of the details anymore. PMC helped by letting me know which tweeters to get & the crossover amendments (I’ve now done these); but nobody left at PMC remembers about the foam upgrade...
When you upgraded your friend’s FB1 to you remember what sort of foam (roughly) was used? Was it similar to the other foam in the enclosure? Roughly how much was there? And finally where did you put it? (Behind the mid/bass driver, or at the exit port?).
Sorry - lots of questions, hope you can help.
Best wishes & kindest regards,
Draco.
Apologies for replying to a post that is now nearly 14 years old, but I’m engaged in some ‘loudspeaker archaeology’ and am taking a long-shot. I have some old FB1s that I’m in the process of upgrading to FB1+. This is difficult, as even PMC don’t know all of the details anymore. PMC helped by letting me know which tweeters to get & the crossover amendments (I’ve now done these); but nobody left at PMC remembers about the foam upgrade...
When you upgraded your friend’s FB1 to you remember what sort of foam (roughly) was used? Was it similar to the other foam in the enclosure? Roughly how much was there? And finally where did you put it? (Behind the mid/bass driver, or at the exit port?).
Sorry - lots of questions, hope you can help.
Best wishes & kindest regards,
Draco.