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Audio/Video
You may wish to use your
150SB
in the context of an
audio/video set-up. With the
150SB
, as we’ve seen, it’s
power section can be disassociated from the preamp
section. You can then connect an A/V processor which will
be driven by the
150SB
preamp.
When you have different amplifiers & speakers working
together in a system, it’s very important to know the
‘
phase
’ of each of the amplifiers in order to obtain the
optimum sound. For example, the
150SB,
when working
as an integrated, is in
positive
phase. However, when
disassociated, the power section of the
150SB
is in
positive phase
and the preamplifier of the
150SB
in
negative
or inverse phase.
Now, if your processor works in negative phase (ask
your dealer!) with the power section of the
150SB
in
positive phase, you’ll need to inverse the red/positive &
black/negative connections of the
speakers on the
processor – this way the phase will be positive and
listening levels comfortable.
One indication as to whether you have inverse phasing
when you shouldn’t, is when you find you need a great
amount of volume in order to hear properly. You’re
probably ‘out of phase’ if this happens!
- phase
The 150 has a motorised volume control that is controlled
either by the front plate buttons or by the remote control
handset. It is usable from the first time you turn on the
unit as well as on stand-by mode.
ADVICE :
Regulate your amplifier around –40dB the first
time you fire up, then adjust for your own taste.
Press the POWER button : the blue LED above will blink for
about 30 seconds. This is the necessary warm-up time for
the tubes. During this period no other control is available.
When the 30’ is over, the blue LED will remain alight and
you’re ready to listen to music.
The #1 input is automatically selected.
To go into the stand-by mode, press the POWER button :
the inputs cut out and the LED blue above the POWER
button will blink for 30’. At the end of this period, only the
volume/gain window will indicate that the unit is on stand-
by mode. The energy used is inferior to 1w.
You may leave the unit in this mode.
- turning on
