Arcam Delta 2 - Manual (Page 3)

Arcam Delta 2 Loudspeaker
Further improvements may also be gained by careful
choice of the cable types for bass and treble signals. As a general guide
bass will usually benefit from a heavier gauge cable and treble from a
cable of smaller cross-section. However, cable construction as well as
size plays an important part in its behaviour at high and low frequencies.
To bi-wire a loudspeaker first remove the two links
between the pairs of red and black terminals on the rear of the speaker
and then connect two separate cable runs to the bass and treble
inputs. These cables should then be commoned (i.e. connected together)
at the amplifier's output terminals. This may be done by connecting both
cables into a single pair of 4mm plugs or, if the amplifier has binding
posts, by making common bare wire or spade connections to the
terminals.
Care must be taken to ensure that all individual
loudspeaker units are connected in the same phase (i.e. connect
terminals RED to RED and BLACK to BLACK). If this is not done serious
frequency response deviations will result.
Power Handling
The Arcam Delta 2 loudspeakers are designed to
reproduce recorded music under normal domestic conditions. We do not
recommend nor warrant them tor use in any form of sound reinforcement
application or at discotheques, parties or other forms of speaker
demolition derby.
Bearing this in mind the loudspeakers will perform well
and safely with hi-fi amplifiers rated at between 20 and 70 watts per
channel. However care must always be taken to avoid amplifier overload
or "clipping". Apart from possible damage to the amplifier this can and
does damage loudspeakers. In this respect, an overdriven low powered
amplifier is much more likely to cause damage than a properly used high
powered one.
Technical Specifications
System design:
Two way reflex loudspeaker, 14 litres internal volume.
Cabinet solidly constructed from 18mm board with a
19mm Medite front baffle, braced and optimally damped.
Drive units:
180mm Polypropylene coned bass / mid range unit with
a diecast chassis.
20mm soft domed tweeter.
Crossover:
High performance 8 element design. 3kHz, 12dB / octave.
Connections:
4mm sockets / binding posts on rear.
Frequency range:
40Hz to 20kHz
Impedance:
8ohms nominal (6.5ohms minimum).
Sensitivity:
88dB / Watt measured at 1 m.
Amplifier Compatibility:
15 to 70W, under normal operating conditions.
Finish:
Real wood veneers. Black Ash or Walnut.
Dimensions:
223
X 281 X 378mm (width x depth x height).
Weight:
Net 8.5kgs each.
Packed: 20 kgs. / pair.
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