So shortly after I got my first pair of Kef 104/2s (The venerable Kef 104/2) I did some tweeter surgery as all the forums say the ferro fluid in the T33s should be toast due to age. Well, all I’ve gotta say is don’t believe everything (or much of anything) you read in the forums and trust your ears. I thought they sounded fine but did it anyway and it made no difference what-so-ever.
Having said that, the Kef T33 tweeter is undoubtably the weak link of the 104/2s and I have no idea why Kef didn’t utilize the far better T27s of Rodgers LS3/5A fame (What is it about the Roger’s LS3/5A?…). In any event, I subsequently upgraded to a new Vifa equivalent that upped the ante for the clarity of the high frequencies and mates perfectly to the obsolete T33’s specifications. It also fits nicely in the 104/2’s cabinets without major modifications.