AudioControl LC6i, User Manual

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Summing The Outputs
Under the cover are connection jumpers that allow the Main outputs
of the LC6i to receive signals from the inputs of Channel pairs 2 and 3.
These jumpers allow you to select which input signals will be summed
into the Main output. When one of the jumpers is in the Summed
position, the corresponding green indicator light on the front of the
LC6i will be lit. The shipped-from-the-factory setting is in the Separate
position.
When you have summed several channels together, you will want
to make sure the output levels are providing a balanced frequency
response. A simple technique involves using a pink noise CD and a real
time audio analyzer (AudioControl happens to make a great one!) Refer
to the diagram on the next page.
1. Perform all of the steps necessary to install your LC6i.
2. Connect the Main Outputs from your LC6i to the audio input on
your real time analyzer. “Yes”, your amplifiers will be disconnect-
ed from the LC6i at this time.
3. Start playing pink noise on your CD player and raise the volume
level until signal is displayed on your real time audio analyzer
(RTA).
4. Adjust the LC6i input level controls for each pair of channels until
your RTA is displaying a smooth or flat response curve.
5. If you wish to make any additional frequency response adjust-
ments you may want consider adding an equalizer to your system
(we happen to know someone who makes some really good
ones: yep, us again, please visit- www.audiocontrol.com).