Te dejo las especificaciones de las cajas de la web de INFINITY:
PRODUCT SPECIFICATIONS
Frequency Response (±3dB): 35Hz – 20kHz
30Hz – 40kHz (– 6dB)
Recommended Power Amplifier Range: 10 – 250 watts
Sensitivity (2.83V @ 1m): 91dB
Nominal Impedance: 8 ohms
Crossover Frequency: 600Hz; 18dB/octave
3,200Hz; 12dB/octave
Low-Frequency Driver: Dual 8" (200mm) CMMD™
Midrange Driver: 5" (130mm) CMMD™
High-Frequency Driver: 1" (25mm) CMMD™
Dimensions
(H x W x D): 41-5/16" x 10-7/16" x 14-11/16" (1050mm x 265mm x 372mm)
Weight: 62.5 lb (28.4kg)
Habla de 10 W mínimo, nada más.
Saludos