37
Note: 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.
wiring diagram
using an SSP
LF
RF
Ctr
RS
LS
Listening Room
video 1 video 2 video 3 video 4
Surround Sound Processor
Sub
Surround Power Amplifier
Center/Sub Power Amplifier
Main (Front) Power Amplifier
RFLF
RS
LS
Ctr
Sub
LF
RF
MADRIGAL AUDIO LABORATORIES
R
display
intensity
monitor record select balance
inverted
polarity
mon
o
123456
standby
PREAMPLIFIER Nº 380
mode
mute
noise in a/v systems 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 75Ω-75Ω balans (isola-
tion) transformer, you can easily construct one from the adaptors
which probably came with your VCR and television, as shown below.
To Next Page
Loading...
