雞婆一下,貼上A1的規格供大家參考
http://www.arietta.ws/production3.htm

Model: Type-A1 Bookshelf Speaker
Cabinet: 180W x 310H x 250D M/M, two-way bass-reflextype.
Bass-Midrange: 5 1/4", 13 oz. Magnet, 1" Voice coil, doped long fiber semi-press paper cone with rubber surround.
Tweeter: 1" doped silk soft dome, 8 oz. Magnet, ferrofluid cooled.
Impedance: 6 ohms nominal.
Crossover Frequency: 3,000 Hz. 1st order with impedance equalization
circuit on woofer, 2nd order on tweeter..
Frequency Response: 50-20,000 Hz.
Sensitivity: 90 dB/1M-2.83V
Power Handling: 50 W R.M.S. 80 W Max.
Weight: 6kg/each