Bowers & Wilkins CWM7 manual

4.4Now connect the speaker cable to the spring terminals on the side back box, first looping the cable around the strain relief bar. The diagram above illustrates cable connection.

Ensure that the speaker connection polarity is correct: the cable connected to the positive terminal on the amplifier should be connected to the red spring terminal on the back box. Similarly, the cable connected to the negative terminal on the amplifier should be connected to the black spring terminal on the back box.

Note: If an amplifier is already connected to the cable it should be switched off while connections are being made to the back box.

4.5With the back box connected to the cable and its reservoir box attached it may be inserted into the wall aperture and cavity. Correct back box orientation must be established at this stage: the red arrow on the back box flange should be pointing upwards.

Ensure that the clamps are retracted so that they will pass through the aperture then feed the reservoir box into the cavity below (or above) the aperture followed by the back box itself into the aperture. Take care that the cable is not trapped. When the reservoir box and back box are adequately seated in place the clamps can be tightened. The diagram above illustrates insertion of the reservoir box and back box.

Finally tighten the two thumbscrews to secure and seal the reservoir box.

Note: If no reservoir box is fitted the back box is simply inserted straight into the aperture.

4.6If the back box flange is to be painted it should be done at this stage. Any conventional, domestic paint may be applied by brushing, rolling or spraying. Use the supplied paint mask to avoid getting paint in the back box cavity. Painting without using the paint mask risks contamination of the internal connection terminals or the grille attachment magnets. The diagram above illustrates painting using the paint mask.

Note: If the grille is to be sprayed this should be done “off-line” before it is fitted.

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