Extron Electronics MLA-VC10 - Manual (Page 18)

MLA-VC10 • Installation and Setup
Installation and Setup, cont’d
2-6
Measuring the voltage for a TOA A-706 amplifier
TOA 700 series amplifiers use a 10k ohm potentiometer instead
of the variable DC voltage on the Remote Volume terminals. To
control volume on these amplifiers, it is necessary to connect the
MLA-VC10 to different terminals on the amplifier (see page
2-12). The control voltage for this amplifier is measured
between the "REMOTE VOLUME" Hot (H) terminal and the
"POWER REMOTE" negative (-) terminal (see figure 2-6).
Write down the measured voltage and which terminal is ground
as this will be important when you set the DIP switches.
N When measuring voltage, if the reading is positive, the
positive probe indicates the signal voltage terminal and
the ground probe indicates the ground terminal. If the
reading is negative, reverse the probes.
Figure 2-6 — Measuring control voltage for a
TOA A-706 amplifier
N The TOA 700 series needs different wiring to connect it
to the MLA-VC10 (see pages 2-12 and 2-13).