HTM82 D4 - Speaker BOWERS & WILKINS - Free user manual and instructions

Product Type	Center channel speaker
Brand	Bowers & Wilkins
Model	HTM82 D4
Series	800 Series Diamond
Speaker Type	2-way: midrange/bass and diamond tweeter
Tweeter	Mechanically decoupled diamond
Grilles	Magnetic and removable
Included Accessories	Grilles (midrange and bass), link cables, adhesive feet, foam bungs, cleaning cloth
Link Cables	2 cables supplied (for bi-wiring or standard connection)
Feet	4 self-adhesive plastic feet supplied
Foam Bungs	2 two-part bungs for bass adjustment
Cleaning	Use the supplied cloth; avoid abrasive, acidic, ammonia or antibacterial products
Wood Care	UV varnish; avoid heat sources; sun exposure to even out the shade
Safety	Banana plugs regulated in Europe (plastic bungs); make connections with power off
Installation	Unpacking by two people recommended; remove jewelry to avoid scratches
Positioning	Dedicated FS-HTM D4 stand recommended; tilt adjustable to 4° or 8°
Bi-wiring	Possible thanks to two pairs of terminals at the rear
Break-in	About 15 hours of normal use for mechanical stabilization
Tweeter Decoupling	Tweeter body mechanically isolated; can be slightly adjusted if moved
Power	Passive (requires external amplifier)

Frequently Asked Questions - HTM82 D4 BOWERS & WILKINS

How to install the HTM82 D4 center speaker?

Unpack the speaker with two people in the installation room. Carefully remove the magnetic grilles. Place the speaker on a dedicated FS-HTM D4 stand or a sturdy shelf. Use the supplied adhesive feet if placed on a shelf. Connect the cables respecting polarities (red ring for positive, black for negative).

How to adjust the bass level?

To reduce the bass level, insert the supplied foam bungs into the decompression vents located at the front (remove the grille first). Use one bung first, then both if necessary. You can also use only the foam rings for a lighter correction.

Can I use banana plugs with this speaker?

Yes, the terminals accept 4 mm banana plugs, but in some countries (notably in Europe), the holes are blocked by plastic bungs for safety reasons. You must remove these bungs if you wish to use banana plugs, and ensure they cannot be inserted into mains sockets.

How to clean the speaker without damaging it?

Use the supplied cloth to dust the cabinet. If using a cleaning product, apply it to the cloth first and test on a small area. Avoid any abrasive, acidic, ammonia-based or antibacterial products. Never clean the speakers themselves and avoid touching them.

The tweeter seems misaligned, is this normal?

Yes, it is normal. The tweeter body is mechanically decoupled and may have moved during transport. You can reposition it very slightly forward/backward or gently rotate it to align the logo. Do not force beyond the soft stops. If in doubt, contact your dealer.

How to remove the speaker grilles?

The grilles are held by magnets. Grasp them by the corners and gently pull forward. The midrange/bass grille is heavier and packed separately. Be careful not to scratch the base; cover the base when removing or replacing the grilles.

Which stand to use for the HTM82 D4?

Bowers & Wilkins recommends the FS-HTM D4 stand, specially designed for the HTM81 D4 and HTM82 D4 center speakers. This stand allows tilt adjustment to 4° or 8° to optimize listening. Follow the stand assembly instructions for safety and performance.

What to do if an accessory is missing from the box?

The box normally contains: one midrange grille, two bass grilles, two link cables, four adhesive plastic feet, two two-part foam bungs, and one cleaning cloth. If an item is missing, contact the dealer who sold you the speakers directly.

How to bi-wire the speaker?

The HTM82 D4 has two pairs of terminals at the rear. For bi-wiring, remove the supplied link cables that connect the pairs of same polarity terminals. Then connect a separate speaker cable from the amplifier to each pair (one for bass, one for midrange/treble). Respect polarities.

What is the break-in period of the speaker?

The mechanical components (speaker suspensions) require about 15 hours of normal use to reach optimal performance. If the speaker has been stored in a cold environment, allow a weekend of stabilization before break-in.

USER MANUAL HTM82 D4 BOWERS & WILKINS

Welcome and thank you for choosing

Bowers & Wilkins. Our founder, John Bowers, believed that imaginative design, innovative engineering and advanced technology were keys that could unlock the enjoyment of audio in the home. His belief is one that we continue to share and inspires every product we design.

The 800 Series Diamond is the world's most advanced range of loudspeakers. Each model benefits from thoughtful installation, so we would suggest that you take some time to read this manual before you begin the installation process. Continue to page 4 →

1 Midrange grille
2 Bass grilles
2 Terminal link wires
4 Self-adhesive plastic pads
2 Two-part foam plugs
1 Cleaning cloth

The HTM81 D4 and HTM82 D4 are very heavy and we strongly suggest that they are unpacked in the room in which they are to be used by two people working together. It is also a sensible precaution to remove jewellery to negate the risk of scratching the speakers' surface finish.

The table above illustrates the component parts that are packed with the HTM81 D4 and HTM82 D4. In the unlikely event that anything is missing please contact the retailer from whom you purchased the speakers.

The heavier bass/midrange grilles attach magnetically and are packed in a separate compartment to prevent movement in transit.

Note: Care must be taken when fitting or removing the magnetically attached grilles to avoid marking the product. The grilles will mark the speaker / stand plinth if dropped; you can mitigate against this by covering the plinth when fitting or removing the grilles.

Tweeter diaphragms are very delicate and easily damaged. In the 800 Series Diamond we include a steel grille mesh that can protect the tweeter from many forms of damage. However, you should still exercise care when handling and cleaning your loudspeakers.

Environmental Information

This product complies with international directives, including but not limited to:

i. the Restriction of Hazardous Substances (RoHS) in electrical and electronic equipment,
ii. the Registration, Evaluation, Authorisation and restriction of CHemicals (REACH)
iii. the disposal of Waste Electrical and Electronic Equipment (WEEE).

Consult your local waste disposal authority for guidance on how properly to recycle or dispose of this product.

The tweeter assembly on this 800 Series Diamond loudspeaker is a decoupled component that is mechanically isolated from the main part of the cabinet. As such, it may appear to be loose when the product is first removed from its packaging. This is not a fault, it is an inherent feature of the design and ensures optimum performance from your speaker.

If the tweeter assembly has moved during transit and requires adjustment, the assembly can be moved slightly forwards and backwards to ensure that the rear of the tweeter body is aligned with the rear of the speaker cabinet. The tweeter assembly can also be rotated slightly to ensure that the Bowers & Wilkins logo is vertically orientated. Do not force the tweeter into any position beyond the soft end-stops when making these adjustments.

Note: Care must be taken to not damage the decoupling assembly when making these adjustments - please seek assistance from your dealer if you are in any doubt about adjusting the tweeter assembly.

1. Positioning 3. Connecting
   

Speaker Installation

If using a projection television with an acoustically transparent screen, position your HTM81 D4 or HTM82 D4 speaker behind the centre of the screen. Otherwise, position it either directly below or above the screen using either a floor-stand, furniture unit or wall shelf ensuring the speaker is as close to ear height as possible.

If a floor-stand is to be used, we recommend the FS-HTM D4. FS-HTM D4 is an adjustable centre speaker stand that allows either HTM81 D4 or HTM82 D4 to be tilted by either 4° or 8°. This range of adjustment makes it easier for you to 'aim' the speaker at your ear level when you are seated. It is important for both safety and performance that the floor-stand assembly instructions are followed.

If a wall-shelf or furniture unit is used, we recommend using the foam bung inserts (supplied) to optimise port performance (see Section 4: Fine Tuning and Running In).

Note: If using a shelf, ensure that it is strong enough to properly support the weight and fit the 4 self-adhesive plastic feet to the underside of the speaker.

Important Safety Notice

All connections should be made with the audio equipment switched off. When using audio equipment in normal operation, touching uninsulated speaker terminals or wiring may result in an unpleasant sensation.

The HTM81 D4 and HTM82 D4 speaker terminals accept a variety of cable terminations: 4mm banana plugs, 6mm and 8mm (1/4 in and 5/16 in) spades, or bare wires up to 4mm (5/32 in) diameter.

Important Safety Notice In certain countries, notably those in Europe, the use of 4mm banana plugs is considered a potential safety hazard, because they may be inserted into the holes of unshuttered mains supply sockets. In order to comply with European CENELEC safety regulations, the 4mm holes in the ends of the terminals are blocked by plastic pins. If you are using the products in any country where these conditions apply, you should ensure that any banana plugs cannot be used in an unsafe manner by children or other uninformed persons. The plastic pins can be removed if you wish to use banana plugs.

Ask your dealer for advice when selecting speaker cable. Keep its total impedance below the maximum recommended in the speaker specification and use a low inductance cable to avoid attenuation of high frequencies.

There are two pairs of terminals at the back of each speaker that enable bi-wiring (top). For conventional, single wire connection, fit the supplied link wires to join the like polarity terminals together.

Ensure that the positive terminals on the speaker (with red ring) are connected to the positive output terminal on the amplifier and the negative terminals on the speaker (with black ring) are always connected to the negative output terminal on the amplifier. Incorrect connection will not result in damage but will cause poor audio imaging and loss of bass. Always screw the terminal caps down fully to prevent rattles.

1. Fine Tuning and Running In

2. Aftercare

Before fine tuning, make sure that all the connections in the installation are correct and secure.

Moving the speakers further from the walls will generally reduce the volume of bass. Space behind the speakers will also help to create an aural impression of depth. Conversely, moving the speakers closer to the walls will increase the volume of bass. If you want to reduce the volume of bass without moving the speakers further from the wall, fit the foam plugs or, for less severe bass reduction, the foam rings in the port tubes (above). Try assessing the impact of fitting the foam plug / ring in one of the ports before assessing the impact of fitting the foam plugs / rings in both ports.

If the bass seems uneven with frequency this will most probably be due to resonance modes in the listening room. Even small changes in the position of the speakers or the listening position can have a profound effect on how these resonances affect the sound. Try moving the listening position or locating the speakers along a different wall. The presence and position of large pieces of furniture can also influence resonance modes.

If the central image lacks focus, try moving the speakers closer together or angling them inward so that they point at a location just in front of the listening position.

If the sound is too bright, increasing the amount of soft furnishing in the room (heavier curtains for example) may help balance the sound. Conversely, reducing the amount of soft furnishing may help brighten a dull sound.

For the most discerning listening, remove the bass/midrange grilles by gripping around their edges and gently pulling them away from the cabinet.

The performance of your speaker may change subtly during the initial listening period. If it has been stored in a cold environment, the damping compounds and suspension materials of the drive units will take some time to recover their correct mechanical properties. The drive unit suspension will also loosen up during the first hours of use. The time taken for the speaker to achieve its intended performance will vary depending on previous storage conditions and how it is used. As a guide, allow up to a week for the temperature effects to stabilise and 15 hours of average use for the mechanical parts to attain their intended design characteristics.

The cabinet surfaces will usually only require dusting. We recommend you use the cloth supplied with the product. If you wish to use an aerosol or other cleaner, apply the cleaner onto the cloth, not directly onto the product and test a small area first, as some cleaning products may damage some of the surfaces. Avoid products that are abrasive, or contain acid, alkali or anti-bacterial agents. Do not use cleaning agents on the drive units. Avoid touching the drive units as damage may result.

Whenever Bowers & Wilkins speakers are finished in real wood, the finest veneers are selected and treated with an ultra-violet resistant lacquer to minimise changes in colour over time. Nevertheless, like all natural materials, the veneer will respond to its environment and a degree of colour change is to be expected. Colour differences may be rectified by exposing all the veneer surfaces equally and evenly to sunlight until the colour is uniform. This process can take several days or even weeks, but may be accelerated by careful use of an ultra-violet lamp. Wood veneered surfaces should also be kept away from direct sources of heat such as radiators and warm air vents in order to minimise the possibility of the wood veneer cracking.

The tweeter housing has a textured surface finish that may collect superficial marks when handled and should be cleaned by wiping the supplied cleaning cloth around the housing, in-line with the surface texture.

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Содержание упаковки

Ask your dealer for advice when selecting speaker cable. Keep its total impedance below the maximum recommended in the speaker specification and use a low inductance cable to avoid attenuation of high frequencies.

Obsah balení

Instalace reprosoustav

Instalacja Głośnika

Hoparlör Kurulumu

包装箱内的物品

1个中音格栅

2个低音格栅

2根端子连接线

4个自粘塑胶垫

2个两部分组成的泡棉塞

1块清洁布

扬声器安装

包裝箱內的物品

1個中音網罩

2個低音網單

2根端子連接線

4個自粘塑料墊

2個兩件式泡棉塞

1塊清潔布

揚聲器安裝

内容物

1 ミッドレンジ グリル

パスグリル2枚

リンクワイヤーケーブル（2本）

粘着式プラスチックパッド4枚

ツーパート・フォームブラグ2個

クリーニングクロス

スピーカーの取り付けは

내용물

스피커 설치 위치

Worthing West Sussex

BN11 2BH England

EU Importer:

Bowers & Wilkins

Beomdestraat 11

5653 MA Eindhoven

The Netherlands

Copyright © B&W Group Ltd. E&OE

Printed in England