Electro-Voice DC-One, Руководство пользователя

Страница: 18 / 49

DC-One
18 Owner‘s Manual
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 1.1 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. 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.