gracias a ambos por vuestras respuesta
estas son las especificaciones de uno y otro
jmalb chorus
Description : Self powered bass reflex subwoofer

Drivers : 11" Polyglass woofer

Frequency response (+/- 3db) : 40Hz - 180Hz

Max. power handling : 300W rms BASH Amplifier

Dimensions(HxWxD) : 340x323x380 mm

Weight : 16.7kg

Finishes : Classic / Technic / Style

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infinity
Frequency Response: 30Hz – 150Hz (±3dB)
Maximum Amplifier Output: 150 watts RMS
(20Hz – 150Hz with
no more than 0.1% THD)
Crossover Frequencies: 50Hz – 150Hz,
24dB/octave, continuously variable
Driver: 250mm (10") CMMD
Dimensions (H x W x D): 400mm x 335mm x 375mm
(15-3/4" x 13-3/16" x 14-3/4")
Weight: 16.7kg (37 lb)
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no entiendo mucho de esto,pero son parecidos?