Soundtube AC-JB10-XFMR 10 W 25/70.7/100 volt transformer inside a junction box

10 Watt 25/70.7/100 volt transformer inside a junction box. Includes 4-position tap switch. Can be added to any low impedance speaker. Tap settings include 10 W, 5 W, 2.5 W and 1.3 W (1.3 W tap not available on 100 V setting). (25 Volt only: 1.3 W, 0.7 W, 0.4 W, 0.2 W).