K 28 WP - 50 OHM
K 28 WP - 8 OHM
EX 60 R - 8 OHM
K 28 WPC - 50 OHM
K 57 C - 8 OHM
K 23 - 8 OHM
EX 45 S - 4 OHM
K 50 - 50 OHM