PRO 6/5/1

Two 6.5" mid-bass  drivers
Two 5.25" mid-range  drivers
Two 1" (25mm.) soft dome tweeters
Two 12db/octave  crossovers
39 - 22KHz +/- 3db

PRO 6/4/1
 PVP 620€

Two 6.5" mid-bass  drivers
Two 4" mid-range  drivers
Two 1" (25mm.) soft dome tweeters
Two 12db/octave  crossovers
39 - 22KHz +/- 3db

PRO 4.0

Two 4" mid-range drivers
Two 1" (25mm.) soft dome tweeters
Two 12db/octave  crossovers
88db  1W /1M sensitivity
59 - 22KHz +/- 3db

PRO 1.0
 PVP 160€

Two 1" (25mm.) soft dome tweeters
Two 12/db/octave high pass filters
Flush and surface mount hardware