Arcam Loudspeakers 882 - Manual (Page 2)

Bi-wiring
Bi-wiring loudspeaken is a cost effective way of improving the sound quality of
lii-fi system. The bi-wdring principle involves electrically isolating the treble and bass
sections of the loudspeaker's crossover network and bringing out the connections to the
four terminals on the loudspeaker. The use of separate cables to each half of the crossover
then enables the complete isolation of the signals fed from the amplifier to the treble and
bass speaker units. A reduction in low level intemrodulation and crosstalk effects is
acliieved, resulting in a cleaner sound ^^^th improved imaging and separation of
instruments.
To bi-wire a loudspeaker you must remove the two hnks 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 connected together at the
amphfier's output temunals. This may be done by connecting both cables into a single
pair of 4nmi plugs or by making common bare wire or spade connections to the tenninals.
Bi-amping
Bi-amping is a similar principle to bi-wiring, except that two stereo amphfiers
are used to drive the loudspeaken instead of one. To bi-amp, connect the treble units to
one of the amplifier's outputs, and the bass units to the other amphfier. Both amplifien
must be fed from a common stereo signal and must be of equal gain. Arcani models such
as the Delta 290 and Delta 290P are ideal for tliis application. Bi-amping offen a further
improvement over bi-wiring, as separate amplifien are dedicated to treble and bass
frequency bands, with less internal intemiodulation effects occurring in each amphfier.
You must remove the links on the rear of the loudspeakers for bi-
amping, otherwise you will damage your amplifiers. Care must also be taken to
ensure that aU individual loudspeaker umn are connected in the same phase (i.e. connect
temiinals FkED to P^D and BLACK to BLACK). If this is not done serious frequency
response deviations will result.
Power Handling
Arcam loudspeaken are designed to reproduce recorded music under normal
domestic conditions. We do not reconmiend nor w'arrant them for use in any form of
sound reinforcement appUcarion or at discothèques, parties or other fomis of speaker
demohtion contest.
Bearing this in mind the loudspeaker will perfomi well and safely with hi-fi
amphfien rated at between approximately 40 and 150 watts per charmel. How>-ever care
must always be taken to avoid amphfier overload or "chpping". If you hear distortion
from the loudspeaken, then reduce the volume level at once, as this is a clear sign of
overload. Apart from possible damage to the amphfier this can and does damage
loudspeaken. In this respect, an overdriven low- powered amphfier is much more hkely
to cause damage than a properly used high powdered one.
SPECIFICATION
Model No.
882 884 886 888
Frequency range 50Hz-22kHz 45Hz-22kHz 40Hz-22kHz 40Hz-22kHz
Drive unit system 2 way 3 way 2 w'ay 3 way
Sensitivity IW at Im 88dB 85dB 88dB 88dB
Nominal Impedance 6 ohms 6ohms 6ohms 6ohms
Compatible amplifier 40-120W 4C-150W 40-150W 40-200W
Weight each 5.9kg 8kg 11.2kg 13.7kg
Height (nun) 381 557 841 966
Width (nun) 216 216 216 216
Depth (nun) 247 247 267 299