RS 4001 E

Introduced: 1989
Dimensions: 57 x 29 x 24 cm
Weight: 12 kg
Bass: 1 x 20 cm
Mids: 1 x Polyspherit
Highs: 1 x Polyspherit
Suggested for amplifiers with: 25-125 Watts per channel
Frequency range: 44 Hz - 22 kHz
Crossover frequencies: 600 Hz, 4000 Hz
Suggested price (pair):  $ 578

A technical sheet with crossover schematics can be seen here.