Bowers & Wilkins HTM81 D4 New in box Black

Reference-Grade Center Channel Performance

At the Center of It All

The center-channel speaker is arguably the most important in home theater—and the HTM81 D4 has an enviable array of advanced technologies to reinforce that point. Our largest center-channel speaker is designed to partner the 801 D4 and 802 D4, delivering both the scale and midrange extension to perfectly match the quality of its illustrious stablemates.

A powerful performer with reference-grade technologies including Solid Body tweeter-on-top, a decoupled Continuum™ Cone midrange drive unit, and twin 200mm (8-in) Aerofoil™ bass cones, the HTM81 D4 ensures that dialogue, music, and effects are reproduced with stunning clarity, power, and realism.

Advanced Driver Technologies

Diamond Dome Tweeter

One of Bowers & Wilkins' most significant accomplishments over the past two decades, the ultra-stiff, supremely accurate Diamond dome tweeter is the perfect combination of low mass, exceptional stiffness, and outstanding accuracy. Diamond's unique properties allow it to maintain pistonic behavior well beyond the audible range, eliminating breakup modes that color sound in conventional tweeters.

Benefits:

• Extended frequency response to 35kHz for exceptional air and detail
• Vanishingly low distortion across the entire treble range
• Perfect transient response for crisp, natural high frequencies
• Uncolored, grain-free presentation
• 15 years after introduction, still the finest tweeter dome technology available

Continuum™ Cone FST Midrange

The 150mm (6-inch) Continuum™ cone midrange driver uses Bowers & Wilkins' proprietary woven composite material that combines exceptional stiffness with optimal damping characteristics. Mounted in a decoupled Fixed Suspension Transducer (FST) configuration, the midrange operates in complete isolation from cabinet resonances.

Benefits:

• Exceptional clarity and resolution in the critical midrange frequencies
• Natural, uncolored vocal reproduction—essential for dialogue intelligibility
• Seamless integration with Diamond tweeter and Aerofoil bass drivers
• Decoupled mounting eliminates cabinet-induced coloration
• Wide, even dispersion for consistent sound across seating positions

Dual Aerofoil™ Bass Drivers

The HTM81 D4 employs two 200mm (8-inch) Aerofoil™ bass drivers to deliver the power and extension required for reference-level home theater. Aerofoil technology combines a carbon-fiber skin with a variable-profile foam core, achieving the ideal balance of low mass and high stiffness.

Now enhanced with the foam Anti-Resonance Plug, the Aerofoil drivers deliver even lower distortion and cleaner bass performance. Each driver is mounted in its own solid aluminum bass pod, clamped into an aluminum plate fixed to the stiffest part of the curved cabinet for optimal mechanical grounding.

Benefits:

• Deep, powerful bass extension down to 28Hz
• Exceptional transient response and speed
• Low distortion even at high output levels
• Perfect tonal match with 801 D4 and 802 D4 main speakers
• Effortless dynamic capability for explosive movie soundtracks

Advanced Cabinet Engineering

Solid Body Tweeter-on-Top

The Diamond tweeter is mounted in Bowers & Wilkins' signature Solid Body Tweeter-on-Top housing—a massive, acoustically inert structure that completely isolates the tweeter from cabinet vibrations. This ensures that the tweeter operates in an ideal acoustic environment, free from the resonances that compromise performance in conventional designs.

Matrix™ Internal Bracing

The HTM81 D4's curved cabinet incorporates Bowers & Wilkins' proprietary Matrix™ bracing system—a complex internal structure that divides the cabinet into multiple small compartments, dramatically reducing panel resonances and ensuring that all acoustic energy is directed forward into the room.

Aluminum Bass Pods

Each Aerofoil bass driver is mounted in its own solid aluminum bass pod—formed as a single piece of metal for maximum stiffness. These pods are clamped into an aluminum plate fixed to the stiffest part of the curved cabinet, providing the perfect mechanical location for powerful, controlled bass reproduction.

Flowport™ Technology

The HTM81 D4 uses Bowers & Wilkins' Flowport™ technology to minimize port turbulence and chuffing, ensuring clean, distortion-free bass even at high output levels. The carefully profiled port geometry allows maximum airflow with minimum noise.

Performance Specifications

Driver Configuration

• Tweeter: 1 × 25mm (1-inch) Diamond dome high-frequency driver
• Midrange: 1 × 150mm (6-inch) Continuum™ cone FST driver
• Bass: 2 × 200mm (8-inch) Aerofoil™ cone bass drivers
• Configuration: 3-way vented-box system

Acoustic Performance

• Frequency Range: 20Hz – 35kHz
• Frequency Response: 28Hz – 28kHz (±3dB from reference axis)
• Sensitivity: 90dB (on axis at 2.83Vrms at 1m)
• Nominal Impedance: 8Ω (minimum 3.0Ω)
• Recommended Amplifier Power: 50W – 500W into 8Ω on unclipped program
• Maximum Recommended Cable Impedance: 0.1Ω

Harmonic Distortion

• 2nd and 3rd Harmonics (90dB, 1m on axis):
• <1% 80Hz – 20kHz
• <0.3% 100Hz – 20kHz

Physical Specifications

• Dimensions (H × W × D): 334mm × 847mm × 371mm (13.1" × 33.3" × 14.6")
• Net Weight: 32.2kg (71 lbs)
• Finish Options: Gloss Black, Satin White (contact for availability)

Note: Stand not included. Contact us for compatible stand recommendations.

Ideal System Pairings

Perfect Match for 800 Series Diamond

The HTM81 D4 is specifically designed to partner the 801 D4 and 802 D4 main speakers, sharing identical driver technologies and voicing for seamless tonal integration. This ensures that dialogue and effects pan smoothly across the front soundstage without timbral shifts.

Recommended Configurations:

• Ultimate Reference: 801 D4 (L/R) + HTM81 D4 (center) + 805 D4 (surrounds)
• Premium Theater: 802 D4 (L/R) + HTM81 D4 (center) + 804 D4 (surrounds)
• Compact Reference: 803 D4 (L/R) + HTM81 D4 (center) + 805 D4 (surrounds)

Electronics & Processing

The HTM81 D4's high sensitivity (90dB) and benign impedance curve make it compatible with a wide range of AV processors and amplifiers. For reference-level performance, we recommend:

• Processors: Anthem AVM 90, Trinnov Altitude, Storm Audio, Datasat
• Amplifiers: Classe, Rotel Michi, Bryston, ATI, Mark Levinson
• Integrated Solutions: Anthem STR, NAD Masters M33

Why Buy From Sunny Components?

• Authorized B&W Dealer: Factory-authorized sales and service, full manufacturer warranty
• In Stock Now: Immediate availability for audition or delivery
• Special Promotions: Bundle pricing available with matching 800 Series speakers
• Expert System Design: We'll help you design your complete home theater
• Showroom Demonstrations: Experience the HTM81 D4 in our reference theater
• Professional Installation: Available for complete system integration
• 30+ Years Experience: Deep expertise in high-end home theater design

Complete Home Theater Design Services

At Sunny Components, we specialize in designing complete reference home theater systems. With your HTM81 D4 purchase, we'll help you:

• Select ideal main and surround speakers from the 800 Series Diamond lineup
• Choose appropriate AV processor and amplification
• Specify premium cables and interconnects (Argento, AudioQuest, Shunyata)
• Recommend power conditioning for maximum performance
• Plan room treatments and acoustic optimization
• Coordinate professional installation and calibration
• Provide ongoing support and system refinement

Purchase Details

Price: $9,500 (Regular $10,500 - Save $1,000)

Condition: Brand new in factory-sealed packaging

Warranty: Full Bowers & Wilkins manufacturer warranty

Availability: In stock and ready for immediate delivery

Special Promotions: Additional discounts available when purchased with matching 801 D4, 802 D4, or other 800 Series Diamond speakers. Contact us for bundle pricing.

Shipping: Professionally packaged and fully insured. Contact us for shipping quote.

Local Pickup: Available at our Covina, CA showroom. Audition in our reference home theater before taking home.

Experience Reference-Grade Home Theater

The HTM81 D4 represents the pinnacle of center channel speaker design, combining Bowers & Wilkins' most advanced technologies in a package specifically engineered to partner the legendary 801 D4 and 802 D4. Whether you're building a new reference theater or upgrading an existing system, the HTM81 D4 delivers the clarity, power, and tonal accuracy that define world-class home cinema.

Next Steps:

1. Contact us to discuss your home theater goals and room
2. Schedule a showroom demonstration (highly recommended)
3. Let us design your complete 800 Series Diamond system
4. Experience home theater the way it was meant to be heard

Contact Sunny Components Today:

Sunny Components Inc.
1370 E Cypress Street, Suite D
Covina, CA 91724
Phone: (626) 975-1353
Web: sunnyaudiovideo.com

Visit our showroom to experience the HTM81 D4 in our reference home theater system.

⚡ In Stock Now - Special Bundle Pricing Available ⚡