SC 5.9 FLX - 8 OHM SC 5.9 FLX, 8 ohm SC 5.9 ND - 4 ohm SC 5.9 ND - 8 ohm SC 5.9 ND 4 OHM SC 5.9 ND 8 OHM SC 5.9 OM 4 OHM SC 5.9 OM - 4 OHM SC 5.9 OM - 8 ohm SC 5/ST -AS