We keep hearing about this Vifa drivers but i searched on icehifi no much information available, so I am starting this thread dedicated to vifa drivers. Lets discuss about the PL18 and PL17 and the legendary xt25 tweets then we move on to other models.
Let this more like FAQ thread for VIFA users, guys who are deciding to get this babies.

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Vifa PL18WO09-04 PREMIUM LINE 7" Woofer
+ Vifa XT25TG30-04 1" Ring Radiator Tweeter
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VSVifa P17 6.5" + Vifa XT25TG30-04 1" Ring Radiator Tweeter

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*Pictures are just for reference.
From this above 2 models of drivers, which is better ?
1) Is 6.5" or 7" better ?
2) Which in terms of quality is more detail, clear, better staging ?
3) Which will produce better bass 6.5" or the 7" ?
4) Any other comments for those who are using it or have audition it before.... please write review. (Much appreciated)
5) Tuning information ? Frequency, Hz, DB slopes, freq cut off, for ACTIVE setup users please share.
Lets share...