2 track 1 & 2 track 2 input sensitivity, Phantom power disable – Allen&Heath WZ20 8 2 SERVICE MANUAL User Manual

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ALLEN & HEATH

2E-8SM

2 Track 1 & 2 Track 2 Input Sensitivity

Both 2 track inputs can be set for nominal high level +4dBu operation or low level -10dBV operation as is common
with much of the external equipment available today. The factory default setting for 2 track 1 is nominal high level
+4dBu operation and for 2 track 2 the factory default setting is low level -10dBV operation. Most outboard
equipment includes output level adjustment but if you wish to change the input sensitivity, the rear connector circuit
board assembly can be reconfigured.

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Connector circuit board assembly

trackside view

Solder link between square
pads for -10dBV operating
level on 2 Track 1.

Cut tracks between square
pads for +4dBu operating
level on 2 Track 2.

Phantom Power Disable

It is perfectly safe to connect non-phantom powered sources such as dynamic microphones to powered XLR sockets
providing that balanced leads and sources are used. The +48V supply is current limited through 6.8k ohm resistors
to each XLR to prevent damage. However, you can disable phantom power to selected channels by cutting out links
on the rear connector circuit assembly.

Phantom power
links

Connector circuit board assembly.

component side view

2 Track1 & 2 level
Option location

8 7 6

This manual is related to the following products:

WZ20:8:2 Service Manual