4)
Placement of the preamplifier
- The preamplifier is the “brains“
of your system and will have the greatest number of
interconnects. Therefore, the preamplifier should be located
such that it is accessible for cabling between itself and all other
relevant pieces of equipment. NEVER place another piece of
equipment on top of the preamplifier and be sure to leave
adequate space (three inches or more) on the top, sides and rear
for airflow.
Note: The external power supply should be placed as
far away as possible from any other components or
cables.
5)
Connections to other components
- Connections are shown in
Figure 2. The input connections for source material (phonograph,
CD player, tuner, tape recorder) are made via RCA jacks on the
rear of the preamplifier. One pair of additional auxiliary jacks is
also available for line level sources (approximately 1 volt). A
five-way lug is provided for grounding the turntable to the
preamplifier. There is also a headphone jack provided on the rear
of the unit. The outputs to the power amplifier and tape recorder
are arranged to the right of the input jacks.
Be sure to use high
quality interconnect cables - they do make a difference.
6)
Polarity -
The Rogue Ninety-Nine preamplifier is an inverting
amplifier (positive signal in gives negative signal out) so, for
best sound, care should be taken to ensure correct polarity at the
speaker terminals. If your power amplifier is also inverting (most
are not), then connect the positive (+) outputs of your power
amplifier to the positive (+) terminals of the loudspeakers and
the negative (-) outputs to the (-) negative loudspeaker terminals.
If your power amplifier is non-inverting, then connect the
positive outputs (+) of your power amplifier to the negative (-)
loudspeaker terminals, and the negative outputs (-) to the
positive (+) loudspeaker terminals. (Rogue Audio power
amplifiers are non-inverting.) If you are unsure as to the polarity
of your power amplifier, check the owner’s manual or contact
the manufacturer. If all else fails, try both connections and listen
to which sounds better (do this using several different recordings
as not all recordings are made with correct phase).
OPERATING YOUR PREAMPLIFIER
1)
Delays-
Note that the Rogue Ninety-Nine is equipped with a
slow turn-on feature that protects other equipment from
dangerous transients at turn-on as well as significantly
prolonging tube life. This feature is provided via several timing
circuits that allow the tube filaments to reach operating
temperature before turning on the high voltage supply. The
outputs are muted during this sequence and then opened after
turn-on transients have been safely dissipated to ground.
2)
Powering up the system -
First turn on the preamplifier by
pushing in the “power” button. The red LED will light after
several seconds. After the heater filaments have warmed up
(approximately 15 seconds), the high voltage supply will turn on.
After an additional 15 seconds, the outputs will disconnect from
ground and the unit is ready to play. After turning on the
preamplifier, turn on the power amplifier and source material
and you are ready for listening.
Rogue Ninety-Nine Owners Manual
5
Rogue Ninety-Nine Owners Manual
4
