Crescendo Evolution 312 is 12 inch (30 cm) subwoofer that has 4 Ohm impedance and works on the range of 300 to 500 Watts. Bass reproduction is low and punchy as to match any kind of music. On top of that, the box size is small (start from 28 litre) thus will not occupy much of the interior space.

Evolution 312 is designed to move 22 mm back and forth without distortion, therefore the bass reproduction is loud.

Some advance features of Evolution 312 as follows:

• Abundant source of bass energy is 4 layer 50 mm large voice coil and double 150 mm large magnet.
• Custom made chassis creates maximum ventilation to cool down voice coil and avoid distortion.
• Aluminium ring with hexagon grill gives complete protection and beautifies the outlook.

Technical Data

• Weight: 6.3 kg
• Dimensions: 332 × 332 × 180 mm
• Subwoofer size: 305 mm (12 inch)
• Nominal impedance: 4 Ohm
• Power Demand: 300 – 500 Watt
• Cosmetic appearance: Brushed aluminum with black and red lining
• Package accessories: Aluminum ring, Hexagon grill, Silver screws
• Fs (resonance frequency): 27.83 Hz
• Re (DC resistance): 3.8 Ohm
• Minimum impedance: 4.63 Ohm
• Sd (cone area): 486.95 cm2
• Xmax (linear excursion): 22 mm
• Qms (Q mechanical): 5.18
• Qes (Q electrical): 0.61
• Qts (Q total): 0.54
• Vas (acoustical volume): 90.58 liter
• Mms (moving mass): 119.54 gram
• BL (force factor): 11.46
• Sensitivity @1W 1m: 87.11
• L1kHz (inductance): 2.94 mH
• Sealed box recommendation: 28 – 56 liter (1 – 2 cu.ft) with 80% dacron fill
• Ported box recommendation: 50 liters (1.8 cu.ft), port tuned @34 Hz (diameter = 10cm, length = 27cm)