Paradigm Cinema 90 Bookshelf Speakers

The Paradigm Cinema 90 is a bookshelf speaker designed for home theater, featuring a 2-driver, 2-way acoustic suspension design with a mineral-filled polymer enclosure. It has a third-order electro-acoustic crossover at 2.3 kHz. The high-frequency driver is a 25-mm PTD dome, while the bass/midrange driver is a 115-mm ICP cone. 
Here's a more detailed look at the specifications:
Driver Configuration:
High-Frequency: 25-mm (1 in) PTD dome
Bass/Midrange: 115-mm (4-1/2 in) ICP cone
Design: 2-driver, 2-way acoustic suspension 
Crossover:
Type: 3rd-order electro-acoustic
Frequency: 2.3 kHz 
Enclosure:
Type: Mineral-filled polymer enclosure
Design: MagneShield 
Frequency Response:
On-Axis: ±2 dB from 110 Hz - 20 kHz
30° Off-Axis: ±2 dB from 110 Hz - 15 kHz 
Amplifier Compatibility:
Power Range: 15 - 100 watts
Maximum Input Power: 50 watts
Impedance: Compatible with 8 ohms