1. Completely made by High-intensity MDF which can efficiently eliminate resonance and box noise. 2. Digital VFD display 3. With USB/SD/FM function 4. With remote control 5. 3.1 model driver units: 6.5inch*1, 3inch*3. Packing size: 397*390*325mm color box G.W: the 3.1 model is 6.5KG. 20 FT: about 560 sets 40FT: about 1160 sets 40HQ: about 1360 sets.
