Primo preamplifier
OPERATION
Issue 1
Page
9
of
12
STARTING
For all the inputs, there is a switch which selects the type of
input being used (see P.7).
Each switch must be set according to the sockets being used.
For an input using the RCA input sockets the switch should
be in the RCA (up) position.
For an input using XLR, the corresponding switch must be
set to XLR (down) position.
Once all connections are made, switch on the unit, using the
POWER
switch on the back of the unit. The standby LED
will light on the front panel. Push the
ON/STANDBY
button,
and the
POWER
and
MUTE
LEDs will light. Outputs are
muted, for about forty-five seconds, so no sound will be heard
until the
MUTE
LED goes out. The unit is now warmed up
and settled, ready for use.
VOLUME
The volume should be adjusted for normal listening levels.
This is done by turning the volume control up or down on the
front panel. The volume level is readily identifiable on the
dial for reference.
Adjusting the
volume can also be achieved using the remote
handset, using the volume up/down buttons (see p. 8).
GAIN
The gain is used to correctly set the amplification factor of
single ended mode (RCA) inputs. Select input that is to be
used in single ended mode. Press
GAIN
button so LED above
is alight for input using single ended source.
The unit is designed to remember which inputs are set and
which are not, even when unplugged. To “un-set” an input,
simply select that input, and push the
GAIN
button again, to
extinguish the LED.
Selecting the input
GAIN
can also be achieved using the
corresponding button on the remote handset, (see p. 8) The
remote
GAIN
button must be held in for about 3 seconds to
enable/disable the additional gain. This is a design feature, to
prevent accidental activation/deactivation. The front panel
button operates normally.
MUTE (remote only)
The sound from the preamplifier may be muted by use of the
MUTE
button on the remote. Press once and
MUTE
LED
will light indicating muted state. No sound will be heard from
the speakers.
To return to listening; simply press the
MUTE
button again
so
MUTE
LED is no longer lit.
CD
To use the
CD
input, connect
CD
player outputs to the
CD
input RCA or XLR sockets (see p.7). Select
CD
input using
the
CD
source button so the LED above is lit.
Selecting the
CD
input can also be achieved using the
corresponding button on the remote handset, (see p. 8).
TUNER
To use the
TUNER
input, connect
TUNER
outputs to the
TUNER
input RCA or XLR sockets (see p.7). Select
TUNER
input using the
TUNER
source button so the LED
above is lit.
Selecting the
TUNER
input can also be achieved using the
corresponding button on the remote handset, (see p. 8).
AUX1
To use the
AUX1
input, connect source outputs to the
AUX1
input RCA or XLR sockets (see p.7). Select
AUX1
input using
the
AUX1
source button so the LED above is lit.
Selecting the
AUX1
input can also be achieved using the
corresponding button on the remote handset, (see p. 8).
AUX2
To use the
AUX2
input, connect source outputs to the
AUX2
input RCA or XLR sockets (see p.7). Select
AUX2
input using
the
AUX2
source button so the LED above is lit.
Selecting the
AUX2
input can also be achieved using the
corresponding button on the remote handset, (see p. 8).
TAPE
To use the
TAPE
input, connect source outputs to the
TAPE
input RCA or XLR sockets (see p.7). Select
TAPE
input using
the
TAPE
source button so the LED above is lit.
Selecting the
TAPE
input can also be achieved using the
corresponding button on the remote handset, (see p.8)
RECORDING AND TAPE MONITOR
To record to tape, (or alternatively CD recorder, DAT,
minidisk or computer soundcard analogue input) connect the
tape out to the recorder line in. Press the input selector button
on the front panel or remote control. This source will now be
routed to the Primo Valve Preamplifier
TAPE
OUT
, without
any changes, for recording by tape deck.
The recording can be directly monitored through the
loudspeakers by pressing the
TAPE MONITOR
button. Press
again to return back to the input being recorded.
On some 3 head tape decks there is an additional tape/source
switch which should be in the tape position for this to work. If
in doubt, please consult tape deck operating manual.
Note - adjustment of the volume control has no effect on the
recording level.
TRIGGER INPUT
The trigger input allows the preamplifier to be switched on by
another device supplying between 5-12VDC trigger output.
The trigger signal can be either polarity, + or –, but must be
between 5 and 12V DC.
TRIGGER OUTPUT
The trigger output allows the remote triggering of other units
that accept up to +12V DC trigger input. This includes our
AMS and TITAN power amplifiers. On our amplifiers the
trigger input automatically takes over the ON
and
off
functions overriding the power amplifier ON/OFF button.
This trigger output also passes on the state of the trigger input.
This allows both the preamp and following unit to be
simultaneously controlled by an external trigger source.
Note
: Triggering
will not
override the MAINS on/off buttons.
If any of the apparatus does not trigger on check all MAINS
SWITCHE(S) are set to ON
