Drive units: 140-mm (5 1/2-in) mid woofer PP cone treated and 28-mm (1-in) tweeter silk dome ferrofluid.
Anechoic frequency response: 55 ~ 25 kHz.+- 3 dB;
Sensitivity: 88 dB/1W/1M;
Recommended amplifier power: min. 30 W, max. 200 W;
Crossover frequency: 2.5 kHz. 6 dB/octave acoustical;
Nominal impedance: 4 ohms;
Dimensions: 340 mm x 200mm x300mm (11" x 8" x 9");
Weight: 21 lb;