Electro-Voice Speaker System - Manual (Page 18)

18
USB
Connecting the DC-One to a PC for operation via the DC-One Graphic User
Interface application is accomplished via the front panel USB port. The port
conforms to the USB 1.0. Type B specification. Type B USB cables are readily
available at computer dealers.
Connection to Amplifiers
It is very important to confirm correct connection to all amplifiers.
The DC-One has the ability to configure each output for a
specific frequency range; sub, low freq. mid freq, high freq.
You must make sure that each output is connected to the
correct amplifier and loudspeaker(s). Incorrect connections
could lead to unexpected results or damage to loudspeaker
components.
Note also that each preset in the DC-One includes DSP and
bandpass parameters for the output channels. It is possible
for a new preset to change an output from Hi to Sub, for
instance. Make sure that connections to amplifiers and
loudspeakers are correct before using a new preset.
Input Level Adjustment
The final step in setting up, installing and connecting the DC-One is to set
proper input levels to the unit. The DC-One does not itself have input level
controls. Proper input level setting is accomplished by setting the output level
from the (L / R) bus outputs from the connected mixer (or other audio output
device). The input meters monitor the input level of either analog or AES/EBU
inputs, depending on the input mode selection set in the Setup Menu.
Optimal signal-to-noise performance is obtained when the nominal
(average), input level consistently lights the +3dBu (green) and /
or +6dBu (Yellow) LED indicators. As the DC-One is a digital audio
device – and digital clipping produces very unpleasant results – the
Clip (red) LED should never light. If it does, reduce the output level
of the connected mixer.
Input levels to the DC-One can be reduced -6dB with the
rear panel pad switch to compensate for higher-level
output from mixers and other audio devices. For ideal
signal to noise performance when connecting the DC-
One to high output level devices, engage the -6dB pad
rather than turning down the output of the connected
device.