2500
Introduced: 1981
Dimensions: 50 x 33 x 24 cm
Bass: 1 x 20 cm
Highs: 1 x Dome Tweeter
Suggested for amplifiers with: 100 Watts per channel
Frequency range: 45 Hz - 20 kHz
Crossover frequencies: ???
Suggested price (pair): $ 298
Comment: 1500 and 2500 are the same.
A technical sheet with crossover schematics can be seen here.