Wiring Diagram Using An Ssp; Noise In A/V Systems - Mark Levinson 380 Owner's Manual

Note:
wiring diagram
using an SSP

noise in a/v systems

the Nº380 will not allow an input with an "ssp" name
to be selected during initialization, since allowing a
line level signal to pass through unattenuated at start-
up presents a potential hazard to your loudspeakers.
video 1 video 2 video 3
Surround Sound Processor
LF RF
display
intensity
inverted
mode
polarity
monitor record select balance
mon 1 2 3 4 5 6 mute
o
In some cases, connecting your audio and video systems together can
result in noise, typically a 50/60 Hz or 100/120 Hz hum. The most
common cause for this noise is a "ground loop" caused by the presence
of two ground references in the system: one from the power company
and another from the cable-television company. The simplest way of
solving this problem is to break the cable company's ground by using
an isolation transformer on the incoming cable line, before it reaches
your television or VCR. If you cannot find a 75 -75 balans (isola-
tion) transformer, you can easily construct one from the adaptors
which probably came with your VCR and television, as shown below.
LS
video 4
RS
Surround Power Amplifier
Ctr
Center/Sub Power Amplifier
Sub
RF
R
MADRIGAL AUDIO LABORATORIES
Main (Front) Power Amplifier
PREAMPLIFIER Nº 380 LF
standby
Listening Room
LS
RS
Ctr
Sub
RF
LF
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