Setting Up and Making Connections - Chapter 1
12 ADAT LX20 Reference Manual
Here’s how the input jacks and plugs are wired:
TipSignal
SleeveGround
Tip
Sleeve
TYPICAL INPUT JACK HOOKUPS
You typically patch the following into the inputs:
• Console direct tape outs. With many mixing consoles, such as the Alesis Studio
24, each mixer channel has a direct output. These can patch a channel directly
to tape, bypassing most mixer circuitry. You would normally patch the direct
out from channel 1 into LX20 input 1, channel 2 into LX20 input 2, etc. This is
preferred when the signals going to tape require none of the mixer’s routing or
processing features.
• Mixer bus outputs. One important mixer characteristic is the number of output
busses. Each output bus represents a mix of input faders, auxiliary sends, etc. Use
bus connections when the mixer performs grouping, premixing, effects, etc. Using
the bus outputs puts more circuitry between the input signals and LX20 compared
to using direct outs, although since most routing can be done at the mixer, you’ll
seldom need to do any repatching.
The LX20 can be optimized to work with 2 bus, 4 bus, or 8 bus mixers, as described
later. You would hook these up as follows.
2 bus mixer: Connect the main bus outs to inputs 1 and 2
4 bus mixer: Connect the main bus outs to inputs 1-4
8 bus mixer: Connect the main bus outs to inputs 1-8
For example, with an 8-bus mixer, you would normally patch output bus 1 to
LX20 input 1, output bus 2 to LX20 input 2, etc. until output bus 8 patches into
LX20 input 8.
• A combination of direct outputs and bus outputs. Some situations require a
combination of the two approaches. Example: Consider a live gig where you
want to record two vocal mics, four mics on drums, two direct feeds from guitar
and bass amps, and one direct feed from keyboards. The vocals, bass, guitar, and
keyboards could be taken direct and go to five LX20 tracks. The four drum mics
can be mixed to stereo within your mixer sent to the submix outs, then go to two
LX20 tracks. The remaining LX20 track could be used to record audience sounds or
capture one of the instruments in stereo, if applicable.
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