Bowers & Wilkins XT Series Bedienungsanleitung

XT Series Service Manual

Table of Contents

Introduction

Spare Part Numbers

Exploded Diagrams

Removing the Tweeter

Replacing the Tweeter

Removing a Midrange/Bass Unit

Replacing a Midrange/Bass Drive Unit

CAUTION

These procedures require that the tweeter is handled. Great care must be

taken not to touch the tweeter dome as it is extremely fragile.

This manual is intended to demonstrate our recommended procedures for servicing the XT2

and XT4 loudspeakers. These procedures should be carried out by B&W approved suppliers

and engineers only. Any attempt at dismantling the speakers by non-approved personnel

will most likely invalidate the warranty, and could result in permanent cosmetic damage to

the speakers. B&W can accept no liability for damage which may occur whilst servicing the

speakers.

The following tools are necessary to carry out these procedures:

• XT HF Removal Tool (HH30955)

• Pins (x2)

• 3mm Hex Driver

• Pliers (not necessary, but could be useful)

Please refer to ﬁ gures 1a, 1b and 1c for part numbers and exploded diagrams.

Introduction

     

      

      

     

      

      

     

     





     

      

      

     

      

      

     

     

     



Figure 1a

Exploded Diagrams













































Figure 1b - XT2 Exploded Diagram Figure 1b - XT4 Exploded Diagram

Removing/Replacing the Tweeter

Removal

1. Carefully remove the cloth grille. (Figure 2)

2. Use two small pins to carefully pull the tweeter grille away from the tweeter assembly. It

is important to use the pins at opposite sides of the grille because the magnet may pull the

frame onto the tweeter dome causing damage. (Figure 3)

3. Locate the tweeter removal tool over the front of the tweeter, ensuring that the groove

is at the top. The tool should slot on over the three screws at the front of the tweeter.

Once located, turn the tool anti-clockwise until the tweeter becomes loose (Figure 4).

Remove the tweeter from the housing and disconnect the wires. (Figure 5)

Figure 2 Figure 3

Figure 4 Figure 5

Removing/Replacing the Tweeter

Replacement

1. With the location pip towards you, connect the replacement tweeter, ensuring

that the red wire is connected to the terminal marked red, and that the tapering

tube is laying in between the two wires. (Figure 6a & 6b)

2. Turn the tweeter anti-clockwise until the location pip faces the left. Insert the right-hand

side of the tweeter ﬁrst, and then the left-hand side (Figure 7). The tweeter should click

into place.

3. Turn the tweeter clockwise so that it holds in place. Use the tweeter tool to tighten,

and there should be another click to indicate that the tweeter is located (Figure 8).

Check that it is aligned by the screw locations. (Figure 9)

4. Replace the tweeter grille being careful not to let the magnet pull it onto the dome.

Figure 6 Figure 7

Figure 8 Figure 9

Removing/Replacing a Midrange/Bass Drive Unit

Removal

1. First remove the tweeter.

2. Remove the grommets from the bafﬂe into which the cloth grille attaches. (Figure 10)

3. Remove the screws from underneath the grommets and the bafﬂe should come loose.

(Figure 11)

4. To remove the appropriate driver, undo the four screws holding it into the cabinet, and

carefully lift the unit away. (Figure 12)

5. Disconnect the wires. (Figure 13)

Figure 10 Figure 11

Figure 12 Figure 13

Removing/Replacing a Midrange/Bass Drive Unit

Replacement

1. Connect the wires to the replacement driver observing the polarity, and locate it into the

appropriate opening. The terminals are deliberately made different sizes so that it is

difﬁcult to get the polarity wrong. (Figure 14)

2. Screw the replacement unit into the cabinet. Maximum torque 1.7 Nm

3. Locate the bafﬂe and replace the screws which hold it on. Maximum torque 1.5 Nm

4. Re-attach the tweeter.

5. Re-insert the grommets so that the cloth grille can be attached (optional).

Figure 14

Kevlar is a registered trademark of DuPont

Printed in England.

UK Group (UK Sales)

T +44 1903 221 500

E [email protected]

B&W Group North America

T +1 978 664 2870

E [email protected]

B&W Group (Asia) Ltd

T +852 2 869 9916

E [email protected]

B&W Group Ltd

Dale Road

Worthing West Sussex

BN11 2BH England

T +44 (0) 1903 221 800

F +44 (0) 1903 221 801

[email protected]

www.bwspeakers.com

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