Antex Electronics DMX-4 USB Recording Mixer - Manual (Page 8)

DMX-4 USB Mixer User Manual
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fixed gain of 0dB in “line” setting. Inputs 3 and 4 have
an adjustable gain of –8 to +31.5dB in “line” setting.
(Although the circuitry is capable of a lower gain setting
than –8dB, the setting is limited in the Antex Mixer
Program to –8dB so that it is not possible for the analog
circuitry to go into clipping before the A/D.)
The monitor outputs are single ended RCA jacks,
capable of a 2VRMS signal (+6dBV). The level
adjustment range is from –102dB to +25.5dB. The
output has a 560 ohm internal series resistance to
protect it from short circuits to ground. The equipment
that the monitor output is connected to should have an
input impedance of 2K or greater.
The A/D converter sample rate can be set to 8, 11.025,
12, 16, 22.05, 24, 32, 44.1, or 48KHz. This allows for
optimization between file size and audio fidelity. All 4
inputs are digitized separately, and 4 tracks may be
recorded to hard disk. The inputs may be mixed in any
combination to the 4 record channels using the Antex
Mixer Program. On your PC, the 4 record channels are
accessed as 2 stereo Wave Devices. Record channels 1
and 2 are left and right of Wave Device 1, respectively,
and record channels 3 and 4 are left and right of Wave
Device 2.
Power input to the DMX-4 can be from +5 to +15 VDC.
Power consumption is about 5 watts. The unit is
supplied with a 9V international wall adapter, but can
also be powered by battery packs or from an automobile
accessory plug (“cigarette lighter”). The power indicator
LED changes gradually from green at 12 volts to red at 5
volts so the user can note a color shift on battery power
when the battery gets low.