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Crossover Networks
Connecting a Terminal
Opus² -1,2,3 and Tri-Centre
i
loudspeakers use a specially
designed tr -wireable crossover panel with six terminal
binding posts. This facilitates standard single wiring,
advanced bi-wiring, and for the no-compromise audiophile,
tri-wiring. Follow the drawing carefully to see the correct
orientation of the loudspeaker terminals. The upper
terminals connect to the treble unit, the middle pair to the
mid-range and the lower pair to the bass units. As
supplied, the treble terminal pair is connected to the mid-
range pair and bass terminal pair via removable metal
straps. These should be left in place for standard single
cable installations. A second bi-wiring strap is provided
which connects the bass and midrange terminal pairs
leaving the treble pair to be separately wired. Refer to the
diagrams opposite
Unscrew the terminal. Insert the bare end of the cable into
the hole in the base of the terminal. Tighten securely.
When connecting terminals make sure you leave no
strands of bare wire that can short across to adjacent
terminals.
As an alternative to bare wire you can use specialist spade
connectors. Your Opus dealer will be pleased to advise
you.
Opus² -M1 and M2
The Opus² -Tri-surround, AVS and AVC
loudspeakers use a bi-wiring panel
essentially similar to the tri-wiring panel above but with
four terminal binding posts. This facilitates standard single
wiring, and advanced bi-wiring. Follow the drawing
carefully to see the correct orientation of the loudspeaker
terminals. The upper terminals connect to the midrange
and treble units, the lower pair to the bass unit. Although
the loudspeakers are full three-way designs, bi-wiring
terminals perform admirably in these loudspeakers'
intended applications without the added complexity and
cost of a full tri-wiring configuration.
The terminal straps are left and right handed for
identification.
loudspeakers use
a bi-wiring panel as shown on the right. These have the
treble and bass terminal pairs in a vertical configuration
with and again these are connected by removable straps to
facilitate single and bi-wiring. Follow the drawing carefully
to see the correct orientation of the loudspeaker terminals.
The upper terminals connect to the treble and midrange
units, the lower pair to the bass unit.
Connections And Terminals
Single
Wiring
Bi- Wiring
Tri- Wiring
Single
Wiring
Bi-
Wiring
Single Wiring Bi- Wiring
Opus²
8
Part number
Dome material & size
Coil size & type
Magnet d1 x d2 x h
Magnet weight
SPL 1w @ 1m
Fs
Frequency range -3dB
Distortion at 100dB @ 1m
Midrange Specifications
Part number
Dome material & size
Coil size & type
Magnet d1 x h
Magnet weight
SPL 1w @ 1m
Fs
Frequency range -3dB
Upper frequency limit -
Crossover sections
Type
Wiring
Connections
Crossover points at -6dB
Bass
mid
Tweeter
0775 & 0776
75mm textile
75mm aluminium
70x32x15
248gm
93dB
500Hz
400Hz–5kHz
typically < 1%
0373, 0374, 0375, 0368
25mm textile
25mm aluminium
25.4 x 4mm Neodynium
14gm
92dB & 94dB
1 kHz
800Hz–40kHz
45kHz
3 way
Butterworth
Triple Wire Plaited OFC
Amp/solder
600 & 750Hz; 900 Hz
400 & 900Hz
3000–4000Hz
3000–4000Hz
Opus²Opus²
Tweeter Specifications
Crossover Specifications
29
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