Yea they are older RCF 90deg horn bells EAW used them in a few boxes years ago. I got the bells and drivers NOS a few years ago for a good price and snagged them. The N482 uses the same diaphraghm as the 480 and 481 Im pretty sure think it is M59 or something(I forget).
Ill look up that beyma driver also.
Thanks
According to my old RCF catalog from pre Loud era the N481K used a phenolic diaphragm, while the 482 used a titanium version.
the phenolic diaphragm had higher power ratings ( 55 versus 30 W 100 hour IEC noise ).
By todays standard both drivers are probably not very good ( Still have two M59 left somewhere
)
Second problem you wll have: 4,2 cu ft cabinet volume is way to high for any modern 15" driver suitable for mid/low mid.
To big a volume will give you a little bit of bass extension at the cost of seriously degraded low mid performance.
Internal resonances are another problem.
With all these caveats: I have used 18sound 15MB650 and 15ND730/15NMB420 with not too bad results together with 1" drivers, 15MB700 is probably something like an EV 15L on steroids, but I have never used it.
IMO any 15"/1" is too much of a compromise for professional use