The rear panel contains:

5 terminal strips - Direct IN/OUT and Iso 1-4. Each of the wire end screw type terminals handles 4 channels

Individual ground lift switches for every Iso output on the unit

A 9-pin DSUB connector that connects the monitor unit and supplies DC power to the AS8X4

As8x4 MONITOR UNIT

The monitor unit is available with various wattage power supplies depending on the number of channels needed in the system. The units are available in 2 configurations, rack mount with the supplies mounted to the rack panel, or a 2 space rack unit for the monitor section only with the supplies located in a separate Hoffman box with multipin connects. The monitor unit can be configured to handle up to 10 AS8X4 splitter units or 80 channels.

Specifications:

 

 

Frequency response

± .15dBv 31Hz - 18KHz, -3dBv at 20Hz, -1.53dBv at 20

Total harmonic distortion + noise

.0019 % at 1KHz –14dBv

Phase shift

.4 degrees at 1KHz

Equivalent input noise

120dBv

Total gain

40dBv

Gain of microphone preamp

20, 30 or 40dBv selectable

Common mode rejection of input

90dBv at 60Hz

Maximum input level

0dBv

Input impedance

1.2K Ohms

Maximum output level

+22dBv

Output impedance

80 Ohms T pad on, 22 ohms T pad off

Headphone output impedance

13 Ohms

Minimum impedance of headphones

30 Ohms

Noise at unity gain

-116dBv

Noise at 40dBv of gain no T pad

-80dBv

Noise at 30dBv of gain no T pad

-89dBv

Headroom LED threshold

0, -12 –24dBv

Phantom power

+ 48 volts DC

Max output of headphones at 30 Ohms

+8dBv

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Whirlwind UT-20581-1 manual As8x4 Monitor Unit, Specifications

UT-20581-1 specifications

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