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Cable Choice
Always use the best quality of cable available within your budget. High quality audio signals passing from the amplifier to the loudspeaker
are unusual in their demands on the cable. Wide dynamic range and frequency bandwidth information has to coexist with the ability
to transmit peak currents of at least 10 amps, without incurring any loss or signal impairment. This explains why the sound quality of
the information reproduced by the loudspeakers is so dependant on the physical properties of the cables connecting them to the
amplifier.
Technically, we recommend two-core cable with cross section area not less than 1.5 square millimeters (1.5mm
to 3 metres. For longer lengths you will require to use cable with a minimum cross sectional area of 2.5 square millimetres (2.5mm
In addition always keep the cable runs the same length for each speaker.
Cable construction can affect the sound quality. Be prepared to experiment to find a cable that suits your ear and audio system. We
do not recommend the use of braided (Litz) or coaxial cables as these have a high capacitance that may affect the stability of certain
amplifiers.
Terminal Panel
In order to take advantage of the driver earthing feature within Glenair and to optimise performance further, use a shielded or screened
loudspeaker cable. The screening termination should be connected to the earth or 'ground' (green) terminal on the loudspeaker and
to the ground or earth connection on the amplifier.
Alternatively if you are not using a screened loudspeaker cable but wish to utilise the earthing facility, run a single cable between the
earth or 'ground' (green) terminal on the loudspeaker to the earth (ground) connection on the amplifier.
HIGH FREQUENCY
NEGATIVE(-) TERMINAL
LOW FREQUENCY
NEGATIVE(-) TERMINAL
4
2
) for cable runs of up
).
2
HIGH FREQUENCY
POSITIVE(+) TERMINAL
LOW FREQUENCY
POSITIVE(+) TERMINAL
'EARTH' OR 'GROUND' TERMINAL
Connecting your Loudspeakers
To avoid potential damage to your loudspeaker, ensure that the amplifier is switched OFF prior to connecting or disconnecting any cables.
Before switching on double check that all connections are secure and that polarity is correct.
CONNECTION IN SINGLE WIRE MODE
LINKS IN PLACE
• Without removing the link plates on the terminal panel, start with the red (positive) lead. Fit this into the red (positive) high frequency
(HF) terminal on the loudspeaker. To do this, loosen the terminal nut sufficiently to allow insertion of the cable and then re-tighten
the terminal nut finger-tight.
• The cable at the other end of the lead should be connected to the red (positive) terminal on the amplifier.
• Repeat this operation for the black (negative) HF terminal, and connect to the black (negative) terminal on the amplifier.
• Repeat the whole operation for the other loudspeaker.
Choosing the HF terminals for single wire mode has been found to give the best sound quality.
Select a signal source, such as a CD player; switch on the amplifier and slowly turn up the volume control to check that both loudspeakers
are reproducing bass and treble information.
TO
RIGHT
SPEAKER
+ -
+
-
L
R
POWER AMPLIFIER
TO 'GROUND' OR
'EARTH'
CONNECTION
ON AMPLIFIER (OPTIONAL)
5
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