Specifications

THE FRONT PANEL
D E I J
A B C F G H K
A. Input selector switches: Choose which of the three inputs to run through the Backbone. This switch
also determines what input comes out of the “SEL INPUT” XLR on the back panel.
B. Left-Right Reverse: Allows you to swap left and right channels.
Gains: When lit, bypasses all active electronics for the input and output gains.
Polarity: Changes the absolute polarity of the signal. For more on this, see page ???
C. Input Gains: 24-position, ½ dB stepped controls. From +6 to -5.5 dB.
D. SUM-DIF Rotary Switch: Lets you use Inserts 2 & 3 for sum-difference (mid-side) processing. Acti-
vated only when the SUM-DIF button (F in this diagram) is lit. For more info, see page ???
E. Inserts 1-8: Controls which inserts are in the signal path. See page ??? for details.
F. SUM-DIF Button: When lit, brings the SUM-DIF rotary switch into the circuit for processing of In-
serts 2 & 3.
G. Swap: Swaps the order of Inserts 4 & 5. See page ??? for info and suggestions.
H. MIX-FADE Button: Brings in the MIX-FADE knob (I in this diagram)
I. MIX-FADE Knob: Acts as a master fader or mixer, depending on the position of the FADER MODE
SWITCH (J in this diagram). For a detailed explanation, see page ???
J. FADER MODE Switch: Selects the function of the MIX-FADE KNOB (I in this diagram). See page
??? for more info.
K. Output Gains: 24-position, ½ dB stepped controls. From +6 to -5.5 dB.