Page 17
Macro-Tech 5000VZ Power Amplifier
Reference Manual
3.3.4 Input Connection
Both the XLR and ¼-inch phone jack inputs are bal-
anced. They have a minimum impedance of 10 K ohms
(5 K ohms with unbalanced wiring) and will accept the
line-level output of most devices. The XLR connectors
and phone jacks are provided on the standard
PIP2-FXQ input module (other
PIP and PIP2 modules
are described in Section 8.1). Correct input wiring will
depend on two factors: (1) whether the input signals
are balanced or unbalanced, and (2) whether the sig-
nal source floats or has a ground reference. Figures
3.7 and 3.8 show the recommended XLR connection
techniques for each type of signal source.
Fig. 3.7 Unbalanced Input Wiring
Fig. 3.9 Balanced and Unbalanced
Phone Plug Wiring
Fig. 3.8 Balanced Input Wiring
The phone jack input connectors can be wired simi-
larly for balanced or unbalanced, ground-referenced
or floating sources. They have a standard tip-ring-
sleeve (TRS) configuration: the tip is positive (+), the
ring is negative (–) and the sleeve is ground (see Fig-
ure 3.9). Wiring for various sources follows the XLR wir-
ing guidelines shown in Figures 3.7 and 3.8.
The XLR and ¼-inch phone jacks provided on the
PIP2-FXQ are wired in parallel. This makes it possible
to use one set for input to the amplifier and the other
set for “daisy-chained” output to other amplifiers.
Please follow the instructions in Section 3.3.2 and 3.3.3
if the amplifier will be used in either Bridge-Mono or
Parallel-Mono mode. Remember, the Channel 2 input
and level control are disconnected in both mono
modes.
