FRS 7 - 8 OHM FRS 7 - 4 OHM FRS 5 XWP - 8 OHM FRS 5 XTS - 8 OHM FRS 5 X - 8 OHM FRS 5 - 8 OHM FRS 10 WP - 8 OHM (WHITE) FRS 10 WP - 8 OHM (BLACK) FRS 10 WP - 4 OHM (WHITE) FRS 10 WP - 4 OHM (BLACK)