Sonic Farm Tantra, User Manual, Page: 8 / 12

TANTRA’S REAR PANEL CONTROLS:
36 Standard IEC-type power receptacle. Just make sure that the fuse ratings correspond to the mains voltage you are using.
37 and 38: Voltage selectors for power amp and preamp separately. These are 2 different circuits; make sure both are set to the correct
mains voltage.
38 See above.
39 and 50 : Speaker “Speakon” connectors. Active only when the power module is built in. Use only the proper Speakon cables. Total
minimum speaker impedance not to go under 4Ω (Ohms). This is the same as 2 x 8Ω. Of course, you can use a single 8Ω or a 4Ω speaker
cabinet. The maximum output power will be 1000W into 4Ω or 500W into 8Ω.
40 External power amp input. Active when the pushbutton switch (41) is depressed.
41 Press to activate the external power amp input and separate the preamp from the power amp. The line preamp output will still be
active. You can even insert an external (balanced, studio grade) processor in between the preamp line output (42) and the power amp
external input (40). For normal amp operation, this switch should be out (not depressed).