JBL LSR25P, Руководство пользователя

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Diagram B
Unbalanced Sources:
Consumer and semi-professional equipment with unbalanced signals usually
have a lower output capability than professional devices. In these cases, it is recommended
to use the LSR25P RCA input. This input has been specifically designed to accommodate
the lower output levels typical of consumer and semi-professional equipment. Figure C
shows when using the RCA connection.
Diagram C
While there are only HOT and GROUND/SHIELD connections from unbalanced
sources, it is recommended that high quality twisted pair cable be used when using the
XLR input of the LSR25P. Diagram D shows an unbalanced source connected to the bal-
anced XLR input of the LSR monitor using twisted pair cable. Note that the shield is con-
nected to the GROUND/SHIELD connector at the LSR input, but not at the source. This
reduces the likelihood of introducing a ground loop into the system.
Diagram D and E are similar. In Diagram E, a link is added between Pin 3 and Pin 2 of
the XLR connector. In some cases, this could be required if hum is encountered.
13
Appendix A: Wiring Recommendations
+
-
Tip
Sleeve
Pin 2
(Tip)
(Ring)
(Sleeve)
Pin 3
Pin 1
LSR25P RCA Input Balanced Source
+
Tip
Sleeve
Sleeve
Tip
+
LSR RCA Input Unbalanced Source
+