CONNECTION IN SINGLE WIRE MODE
The terminal panels have captive link bars fitted as standard to link the positive and negative HF and LF terminals respectively. These must be removed to bi-wire the speakers - see section entitled Connection in Bi-wire mode. (See fig. 4)
For optimum performance in single wire mode, loudspeaker cable connections from the amplifier should be made to the high frequency (HF) terminals of the loudspeaker:
*The positive (plus) terminal on the amplifier left channel (marked + or coloured red) must be connected to the positive HF terminal on the left speaker. The left speaker is the one on the left as you look at
the stereo pair from your listening position.
*The negative (minus) terminal on the amplifier left channel (marked - or coloured black) must be connected to the negative HF terminal on the left speaker.
*Repeat this connection process for the right speaker. Remember that the positive (+ or red) on the amplifier must be connected to the positive (+ or red) on the speaker and the negative (- or black) to negative.
*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.
CONNECTION IN BI-WIRE MODE
Please note in bi-wire mode that the link bars must be removed. Unscrew the knurled nuts on both the positive and negative HF and LF terminals and remove the link bar and then replace the colour- coded nuts, as they will be required to clamp the bi-wire cables in place. Retain the link bars in a safe place for possible future use.
*Be sure that the amplifier is switched OFF and then prepare the two sets of cabling for each 'side' of the system separately. Measure and cut four lengths of cable, two per speaker.
Label two of the cable lengths Left LF and Left HF (low frequency and high frequency) then repeat this process for the right pair.
*If your amplifier is not equipped with separate output terminals for bass and treble information then, at the amplifier end of the cables, twist the Left LF+ (positive) and the Left HF+ (positive) together. Connect these to the amplifier Left channel positive terminal marked + (plus) or coloured red.
Twist the Left LF- (negative) and the HF- (negative) cables together and connect them to the amplifier Left channel negative terminal marked - (minus) or coloured black.
At the loudspeaker end connect the cables labelled Left LF+ and Left LF- to the left hand loudspeaker LF terminals, ensuring that you note the polarity markings on the cable sheathing.
Then proceed to connect the Left HF+ and Left HF- to the HF terminals on the same loudspeaker.
*Repeat this process to connect the right hand loudspeaker to the amplifier right channel output, once again ensuring that polarity is correct throughout.
*Switch the amplifier on with the volume control set at its lowest setting. Select a favourite source and slowly turn up the volume to a low level. Check that bass and treble information is being reproduced from both speakers - if not, switch off the amplifier and recheck the connections. (See fig. 5)
BI-AMPING
Bi-Amping extends the principle of bi-wiring one stage further. In this connection option separate power amplifiers are used for bass and treble signals in each loudspeaker. Four mono (or two stereo) amplifiers of the same type are required for a stereo pair of loudspeakers. Ensure that the cable links between the loudspeaker terminals are removed and that correct polarity is maintained throughout.
If two stereo amplifiers are used, it is recommended that one amplifier supply bass information to left and right loudspeakers and the other, the treble information. (See fig. 6)
CONNECTION OF EARTH OR 'GROUND' LEAD
Use of a shielded or screened loudspeaker cable will offer further performance advantages when used with the five-way terminal panel. 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.
It is essential that the coupling link cables between the loudspeaker terminals be removed.
Avoid potential damage to your amplifier - ensure that all connections are secure and the polarity is correct in all wiring. (Method illustrated on all terminal panel sketches)
POSITIONING AND FINE-TUNING
To get best results from your new Tannoy Eyris DC loudspeakers it is worthwhile spending a little time finding the optimum set-up configuration.
Begin by angling the speakers towards your chosen listening position, usually this is on the centre line of the room, so that when seated you can just see the inner side panel of each speaker. The front of the loudspeaker should not be obstructed in any way. The loudspeakers should be located between
1.5to 4.5 metres (5ft to 15ft) apart - with the listening position set slightly further away than the speakers are apart. Avoid positioning the loudspeakers in corners of the room, as this will have a negative effect on performance. Ideally, maintain a distance of at least 0.5 metres (20 inches) from the rear wall, and 1 metre (39 inches) from the side.
With the speaker in its listening position, rock the loudspeaker gently from side to side so that the spikes find their way through the weave of the carpet and on to the solid surface below. Once fine adjustments have been made to the spikes, to level the loudspeaker and ensure stability, tighten the lock nuts firmly but without using undue force. (See fig. 7)
BASS TUNING
These Eyris DC speakers have been designed for use in rooms with average to good acoustics without port damper bungs fitted. However, in smaller rooms where loudspeaker positioning is forced closer to rear or sidewalls, the foam port damper bung supplied in the accessory kit can be inserted into the reflex port. This will reduce the bass energy but 'speed-up' the sound presentation.
There is no absolute right or wrong here, therefore much will depend on your own musical preferences.
