Arcam Delta 90.2 - Manual (Page 5)

Tuner input
The tuner input is suitable for use with almost any AM or FM
tuner. Connect your tuner to the amplifier using the phono sockets
marked tuner.
The switched (SP2) outputs also give the opportunity of using
two sets of 8ohm impedance (or higher) loudspeakers with the Delta
90.2. By connecting one set of speakers to the main outputs and one to
the switched and by depressing the SP2 switch on the front of the
amplifier it is possible to drive both sets at once.
Tape input/Output
The Delta 90.2 has connections for two tape recorders and is
suitable for use with almost any cassette, reel to reel or video tape
recorder:
1 connect the 'record' leads of your tape recorder to the
phono sockets marked 'out' on the rear of the Delta 90.2 using
phono/phono leads
2
connect the 'playback' leads of your tape recorder to the
phono sockets marked 'in' on the rear of the Delta 90.2 using phono/
phono leads.
Loudspeakers
The loudspeaker outputs are suitable for driving loudspeakers
in the range 4— 16ohms impedance. The heavy duty loudspeaker binding
posts will accept almost any type of connector, i.e. bare wires, 4mm
'banana' plugs, spade connectors, pin connectors etc. A set of 4 suitable
plugs is supplied as standard with the Delta 90.2. The Delta 90.2 has
two sets of speaker outputs, marked main and switched (SP2). The main
outputs, which offer a slightly superior sound quality to the switched, are
suitable for use where loudspeakers are to be used alone or where
loudspeakers and headphones are to be used at the same time.
The switched (SP2) outputs, in addition to the above, offer
the possibility of using headphones only. The switched (SP2) outputs are
operated by depressing the SP2 switch on the front panel of the
amplifier. When the SP2 switch is depressed the operation of the
switched outputs is identical to that of the main outputs. When the
switch is out the switched outputs are off, allowing headphones to be
used alone.
Loudspeaker connections
1 For both main and switched connections connect the
negative side (usually black) of your left hand speaker to the black
terminal of the two sockets marked 'L'. The other (the positive side or
red) should be connected to the red terminal marked 'L'.
2 Repeat for the right hand loudspeaker.
Bi-wiring
If you are using, or are planning to use, a pair of
loudspeakers which can be bi-wired, such as our own Arcam One+ or
Two+ models, you can easily take advantage of this simple but very
effective sonic upgrade with the Delta 90.2.
For each loudspeaker connect one pair of speaker cables, we
suggest those running to the bass inputs on the speaker, to the main
output for the corresponding channel on the amplifier; and one pair, we
suggest those running to the treble inputs on the speaker, to the
switched output for the corresponding channel on the amplifier. It will be
necessary to depress the SP2 switch to enable the treble units to be
driven.
Heatsink/ventilation requirements
The heat produced by the amplifier is dissipated into the air
by the finned heatsink on the rear which will, along with the
surrounding panel, become warm while the amplifier is on. The whole
back panel may become quite hot if the amplifier is run near full power.
This is perfectly normal. However, if it becomes too hot to touch, switch
off the amplifier at once and consult your dealer. It is very important that
there is adequate ventilation for the whole of the amplifier, but especially
for the rear. It is also important to remember not to place records on top
of it!