Audio T Verdict
The Bowers & Wilkins HTM6 S3 is a compact centre speaker designed to make dialogue clearer, more natural and easier to follow without requiring an especially large cabinet.
Its Titanium Dome tweeter brings improved treble detail and refinement, while the twin 130mm Continuum bass and midrange drivers give voices convincing body, scale and presence.
It is the natural centre-channel partner for the Bowers & Wilkins 600 Series S3 range. Careful placement and correct AV receiver calibration are essential if it is to deliver a seamless front soundstage.
Bowers & Wilkins HTM6 S3 Centre Speaker
The HTM6 S3 is the dedicated centre-channel loudspeaker for the Bowers & Wilkins 600 Series S3 home cinema range.
It combines a 25mm Titanium Dome tweeter with two 130mm Continuum cone bass and midrange drivers in a compact two-way vented enclosure.
Designed to sit above or below a television or projection screen, the HTM6 S3 anchors dialogue, vocals and centrally placed effects to the picture while maintaining a consistent tonal character with matching 600 Series S3 speakers.
Supplied Individually
The HTM6 S3 is supplied and priced as one centre-channel speaker.
It is a passive loudspeaker and requires a separate home cinema receiver or multichannel power amplifier.
The Importance of a Centre Speaker
In most home cinema soundtracks, the centre channel carries a large proportion of the dialogue as well as vocals, music and effects positioned in the middle of the screen.
A dedicated centre speaker helps keep speech anchored to the picture, even when viewers are sitting away from the central listening position.
It also reduces the workload placed on the front left and right speakers, allowing the complete system to produce a broader and more stable soundstage.
Decoupled Double Dome Titanium Tweeter
The HTM6 S3 introduces the Titanium Dome tweeter developed for the latest 600 Series generation.
The dome combines a thin, lightweight main diaphragm with a reinforcing second section designed to improve rigidity and control.
The tweeter is mechanically decoupled from the main cabinet structure, helping reduce the influence of unwanted cabinet vibration on high-frequency performance.
The result is a clear, refined and detailed treble that helps reveal subtle changes in voices, ambience and soundtrack effects.
Improved Tweeter Grille Mesh
The tweeter is protected by an acoustically transparent grille mesh derived from technology developed for Bowers & Wilkins Signature loudspeakers.
The revised mesh is designed to reduce interference between the protective grille and the tweeter’s output.
This helps preserve high-frequency clarity and openness while protecting the delicate dome from accidental contact.
Twin Continuum Bass and Midrange Drivers
Two 130mm Continuum cone drivers reproduce the bass and midrange frequencies.
The composite Continuum material is designed to avoid the abrupt changes in behaviour that can affect some conventional cone materials.
This allows voices and instruments to be reproduced with an open, neutral and consistent character, helping dialogue remain intelligible when competing with music and effects.
Using two drivers also gives the compact HTM6 S3 greater output capability and vocal weight than would normally be available from a single small bass and midrange unit.
Flowport Bass Reflex System
The HTM6 S3 uses a vented-box enclosure with Bowers & Wilkins Flowport technology.
The dimpled surface of the port is designed to improve airflow and reduce turbulence as air moves in and out of the cabinet.
This helps the speaker produce useful bass extension from its compact enclosure while reducing unwanted port noise during demanding scenes.
Allow Space Around the Port
Avoid pushing the rear of the speaker tightly against a wall or the back panel of enclosed furniture.
Leaving breathing space around the cabinet will help the Flowport operate correctly and can reduce excessive or uneven bass.
Upgraded Speaker Terminals
The HTM6 S3 uses an improved terminal arrangement derived from the connections introduced on the Bowers & Wilkins 700 Series.
The revised layout provides a cleaner signal path between the amplifier, speaker cable and internal crossover.
Use correctly terminated speaker cable and ensure each connection is tight enough to remain secure without applying excessive force.
Matching the 600 Series S3
The HTM6 S3 is voiced to complement the Bowers & Wilkins 603 S3, 606 S3 and 607 S3.
Using speakers from the same range helps maintain a consistent tonal character as voices, music and effects move between the front left, centre and right channels.
The HTM6 S3 is compact enough to partner the smaller 606 S3 and 607 S3 while still having sufficient scale to accompany the 603 S3 floorstander.
Positioning Above or Below the Screen
The HTM6 S3 should normally be positioned centrally above or below the television or projection screen.
Keep the tweeter as close to seated ear height as the room and furniture allow. Where the speaker must sit significantly above or below the listeners, angle it towards the main seating area.
The front of the cabinet should ideally sit level with, or slightly forward of, the front edge of the supporting furniture. Placing it far back inside a shelf can cause reflections and make dialogue sound coloured or enclosed.
Keep the Speaker Centred
Align the middle of the HTM6 S3 with the centre of the screen wherever possible.
An off-centre speaker can make dialogue appear disconnected from the picture and may create an uneven experience for listeners across the room.
Supporting the Speaker
The HTM6 S3 weighs 7.7kg and should be placed on a rigid, level and suitably strong shelf, cabinet or dedicated support.
The surface should support the complete 480mm width and 255mm cabinet depth while leaving additional room for the grille, terminals and speaker cable.
Suitable isolation pads can help protect furniture, reduce movement and provide a small amount of adjustment when the speaker needs to be aimed towards the listening position.
Cabinet and Furniture Clearance
The cabinet measures 255mm deep, increasing to 283mm when the grille and rear terminals are included.
Allow further space behind the speaker for the bend radius of the speaker cable and for ventilation around the rear port.
If the speaker is installed inside furniture, ensure the opening is wide and high enough that the cabinet is not tightly enclosed.
AV Receiver and Amplifier Matching
Bowers & Wilkins recommends amplifier power between 30 and 120 watts into 8 ohms on unclipped programme material.
The HTM6 S3 has a sensitivity of 87dB, a nominal impedance of 8 ohms and a minimum impedance of 4.3 ohms.
A good-quality home cinema receiver should therefore provide stable amplification into lower impedances rather than being selected solely by its headline power figure.
The correct receiver or amplifier will depend on the room size, listening distance, number of channels, required volume and the other speakers in the system.
Home Cinema Calibration
After installation, use the AV receiver’s setup system to confirm the speaker distances, channel levels and bass-management settings.
Automatic room correction can provide a useful starting point, but the results should still be checked by ear.
Dialogue should sound centred and natural without being obviously louder than the rest of the system. If speech remains difficult to follow, review the placement and calibration before simply increasing the centre-channel level.
Check the Speaker Size Setting
Many systems will perform best when the HTM6 S3 is configured as a bass-managed or “small” speaker, allowing a suitable subwoofer to reproduce the deepest frequencies.
The ideal crossover setting depends on the room, receiver, subwoofer and complete speaker system, so it should be established during calibration.
Speaker Cable and Polarity
The positive amplifier terminal should connect to the positive speaker terminal, with the negative terminals connected in the same way.
Maintaining correct polarity across the front left, centre and right speakers is essential for coherent dialogue, bass and imaging.
Bowers & Wilkins specifies a maximum recommended speaker-cable impedance of 0.1 ohm, making good-quality low-resistance cable particularly important over longer runs.
Running In
The mechanical components of a new loudspeaker may settle during its initial period of use.
The sound may become more open and evenly balanced after the speaker has played a varied selection of music and film material at normal listening levels.
No special running-in signal is required. Avoid excessive volume and allow the speaker to develop naturally through ordinary use.
Using the Grille
The supplied grille protects the drive units and provides a discreet appearance beneath or above the screen.
The speaker can be used with or without the grille according to preference, although it should remain fitted where the drivers may be vulnerable to accidental contact.
The Black cabinet is supplied with a black grille, while the White and Oak versions use a grey grille.
Finish Options
The HTM6 S3 is available in:
- Black with black grille
- White with grey grille
- Oak with grey grille
Matching 600 Series S3 speakers are available in the same cabinet finishes, allowing a visually coordinated home cinema system.
Key Features
- Dedicated 600 Series S3 centre-channel speaker
- Compact two-way vented-box design
- 25mm Decoupled Double Dome Titanium tweeter
- Acoustically transparent tweeter grille mesh
- Two 130mm Continuum cone bass and midrange drivers
- Bowers & Wilkins Flowport technology
- Upgraded speaker-terminal layout
- Designed to match 603 S3, 606 S3 and 607 S3
- 42Hz–33kHz published frequency range
- 72Hz–28kHz frequency response within ±3dB
- 87dB sensitivity
- 8-ohm nominal impedance
- 4.3-ohm minimum impedance
- 30–120-watt recommended amplifier power
- 480mm cabinet width
- 160mm cabinet height
- 255mm cabinet depth
- 283mm depth including grille and terminals
- 7.7kg net weight
- Black, White and Oak cabinet finishes
- Five-year limited manufacturer’s warranty
Frequently Asked Questions
Is the HTM6 S3 supplied individually?
Yes. The HTM6 S3 is supplied and priced as one centre-channel loudspeaker.
Does the HTM6 S3 contain an amplifier?
No. It is a passive speaker and requires a suitable home cinema receiver or multichannel amplifier.
Which speakers match the HTM6 S3?
It is designed to complement the Bowers & Wilkins 603 S3, 606 S3 and 607 S3 speakers.
Can it be used with older Bowers & Wilkins speakers?
It can operate with other passive speakers, but the closest tonal and visual match will normally come from the current 600 Series S3 range.
Should the centre speaker go above or below the television?
Either position can work. Place it centrally and as close to the screen as practical, then angle it towards seated ear height if necessary.
Can the HTM6 S3 be placed inside a cabinet?
Yes, provided the cabinet is strong enough and leaves suitable clearance around the speaker, terminals, cable and rear Flowport. Avoid pushing it deep inside a tightly enclosed shelf.
Can it be wall mounted?
The HTM6 S3 is not supplied with an integrated wall-mounting system. Any shelf or bracket must safely support its dimensions and 7.7kg weight while leaving clearance for the rear port and connections.
What amplifier power is recommended?
Bowers & Wilkins recommends between 30 and 120 watts into 8 ohms on unclipped programme material.
What is the minimum impedance?
The nominal impedance is 8 ohms and the published minimum is 4.3 ohms.
Does the HTM6 S3 need a subwoofer?
It can operate without one, but a suitable subwoofer will usually improve home cinema impact and allow the HTM6 S3 to concentrate on dialogue and midrange detail.
Should it be configured as a small speaker?
In many home cinema systems, bass-managing the HTM6 S3 as a small speaker provides the best integration with a subwoofer. The final setting should be confirmed during system calibration.
Can the HTM6 S3 be used as a normal stereo speaker?
It is designed primarily as a centre channel. A matched pair of conventional 600 Series S3 speakers will be more appropriate for left and right stereo use.
Can the grille be removed?
Yes. The speaker can be used with or without its grille, although keeping it fitted provides additional protection for the drive units.
What finishes are available?
The HTM6 S3 is available in Black, White and Oak.
How large is the speaker?
The cabinet measures 480mm wide, 160mm high and 255mm deep. Its complete depth is 283mm including the grille and terminals.
How much does it weigh?
The HTM6 S3 weighs approximately 7.7kg.
Does it need running in?
The sound may settle during the initial period of ordinary use. No special running-in signal or unusually high volume is required.
What warranty is included?
Bowers & Wilkins provides a five-year limited warranty for passive loudspeakers, subject to its current terms and conditions.
Related Bowers & Wilkins Products and Audio T Guides
Why Buy From Audio T?
- Bowers & Wilkins home cinema demonstrations
- Centre-speaker positioning and support advice
- AV receiver and amplifier matching
- Complete surround-system planning
- Subwoofer and bass-management guidance
- Speaker cable and termination advice
- Home cinema calibration and setup support
- Part exchange on suitable existing equipment
- Ongoing after-sales support
Contact your local Audio T store to arrange a demonstration or discuss building a Bowers & Wilkins 600 Series S3 home cinema system.