RS 4000

Introduced: 1988
Dimensions: 57 x 32 x 25 cm
Bass: 1 x 20 cm
Mids: 1 x Polycone
Highs: 1 x EMIT
Suggested for amplifiers with: 25-125 Watts per channel
Frequency range: 45 Hz - 45 kHz
Crossover frequencies: 800 Hz, 3500 Hz
Suggested price (pair):  $ 470

A technical sheet with crossover schematics can be seen here.