Specifications

Rear Panel Connections
Never Connect Either the Positive or Negative Speaker Output to Any Ground Contact!
Use Class 2 Wiring for all Loudspeaker Connections!
Connecting any Speaker Output on the REF150S to Ground will cause the amplifier to go into protection and
could damage the amplifier and void the warranty.
• Power Switch: Power is on when the switch is
toggled to the I position and off in the O position.
• IEC power cord jack: Connect a heavy gauge
power cord from this jack to the wall power
supply. Note the power setting indicated on the
back of the amplifier before connecting the
power.)
• Output Connections: WBT nextgen 5-way
binding posts
• Input Connections and RCA/XLR switch: When
using RCA cables for the input ensure that the
RCA/XLR switch is pressed in to the RCA
position. When using XLR cables insure that the
switch is out in the XLR position. Do not
connect both XLR and RCA cables to the
inputs!
Double-check all connections to and from the
amplifier. Power on the preamplifier in your system,
activate its Mute setting and then power on the
REF150S.
Front Panel Indicator Lamp
What to do if there is hum or ground noise: