Tannoy System 1000, User Manual

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We recommend location of the monitors so that the drive units are toed inwards, with
their axes oriented towards the listening position. The distance between the two
speakers should be 1.5 to 2.5 metres, depending on the monitoring position. The
distance between the monitoring position and each speaker should be slightly greater
than the distance between the speakers. If the speakers are placed too close to each
other the full stereo image may not develop, on the other hand if you place them too
far apart you will notice a hole in the middle of the stereo image.
Ensure that the console position does not obscure the direct sound radiation from the
Dual Concentric drive unit when sitting down. The engineer and producer should
have a clear, uninterrupted view of the monitor loudspeakers.
Connecting the loudspeakers.
The loudspeaker can be connected to the amplifier via to two different modes of
operation : conventional wiring and bi-wiring. In the latter mode two separate pairs of
cables are used to connect the amplifier to the monitor, i.e. one for the low-frequency
(LF) and one for the high-frequency (HF) sections.
The termination panels located at the back of the loudspeakers must be set
according to the desired wiring mode, as shown on the figures below. The
termination panels are factory set for normal wiring operation, as shown on Fig.1. In
this mode the LF and HF banana sockets are connected together by two gold-plated
links, allowing a single twin core cable to drive the loudspeaker. For bi-wiring
operation, loosen the banana sockets (turn knob anti-clockwise) and remove the two
gold-plated links ; then connect each twin core cable to one pair of red / black
terminals of the speaker (one is marked LF and the other HF), as shown on Fig. 2. At
the other end (amplifier) the two cables are connected together, positive to positive,
negative to negative.
Figure 1. Normal wiring Figure 2. Bi-wiring
When connecting the speakers it is essential that consistent polarity is observed. The
red terminal(s) on the loudspeaker must be connected to the red or positive
terminal(s) on the power amplifier, and the black terminal(s) on the loudspeaker must
be connected to the black, negative or ground terminal(s) of the power amplifier.
When operating the loudspeakers in normal wiring mode, it is important that the two
gold-plated links are properly tightened to ensure a perfect electrical connection
between LF and HF terminals.
The types of cable used to connect the speakers to the power amplifier will
marginally affect the sound. The cross-sectional area of the cable should be large
enough so as not to affect the damping factor, and generally a cable with a cross-
sectional area of 2.5 mm² or greater is recommended.