c) Once that is done, you click SET and the system will adjust the speaker diagram, install default crossovers,
and open (or clear) the I/O matrix so you can assign the needed inputs to each output channel.
Defining Inputs
To the right of the OUTPUT section is the I/O Matrix. When you choose your input and click SET, the
input squares in the matrix open and they say ON at the top. If you wish, you can click any ON square
and get a drop-down menu where you can name the input by function (i.e. FL Full, or Center, or
Subwoofer, etc.). While this is functionally an 8-Channel processor, the actual mechanics of the HDSP
processors has 12 input channels. 8 input channels are available for an aftermarket or OEM head unit.
2 channels (LEFT and RIGHT) are there to accept fixed 2-channel digital sources and the auxiliary LINE
input (if only 6 inputs are used in the OEM section). 2 more inputs (L-1 and L-2) are available in the
Loop section for creating special effects, which we will discuss later in the Special Features section.
Below is a 12-channel system with a 2-channel input. When we clicked SET inputs L-IN 1 and L-IN 2
opened and turned ON. We assigned input 1 to all left speakers and input 2 to all right speakers. The
subwoofers are mono, so we assigned both left and right inputs to them. When you assign multiple
inputs to a channel, they are distributed evenly to total 100%.
Advanced Tuning: You can change the percentages if you wish for
special effects by clicking the up/down arrows in the matrix boxes and
using your up/down keyboard arrows. Right clicking in a box will also
allow you to change the polarity of the box. You can use any
combination of adding or subtracting inputs for any speaker channel,
BUT, this should only be done by experienced tuners who know
exactly the effect they are looking for.
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