
803 D4 is our most compact model that makes use of all 800 Series Diamond technologies. 803 D4 steps up from 804 D4 by completely isolating the Continuum midrange driver in a separate enclosure called the Turbine Head. This all-aluminium enclosure is an inert housing for the midrange driver that avoids unwanted resonances and is decoupled from both the bass enclosure and the tweeter body. Cabinet stiffness has been increased with an Aluminium Plate that reinforces the top of the cabinet. Midrange performance has been dramatically improved with a new Biomemetic Suspension that replaces a conventional fabric spider with a groundbreaking innovation that reduces distortion behind the drive unit. The Solid Body Tweeter enclosure has been elongated, increasing air volume behind the diamond tweeter which improves the openness in high frequencies. The top section’s aluminium top-plate is covered in Leather by Connolly trim. We use luxurious, full-grain black leather for Gloss Black and Satin Rosenut finishes, and a light grey leather for White and Satin Walnut. Each new generation of 800 Series Diamond is a landmark event for Bowers & Wilkins. This is our benchmark and the most advanced range of loudspeakers we know how to make, equipped with our most sophisticated technologies and designed to deliver the upmost in sonic realism. The 800 Series Diamond is everything we know, and everything we are.
Q: What is the maximum power handling of the speaker?
A: The peak power handling of this speaker is 500 watts.
Q: Does the speaker support wireless multi-room audio?
A: This speaker does not support wireless multi-room audio.
Q: What are the dimensions of the speaker?
A: The speaker is 45.87 inches tall, 14.06 inches wide, and 12.12 inches deep.
Q: What is the purpose of the Aluminium Plate in the cabinet?
A: The Aluminium Plate reinforces the top of the cabinet to increase cabinet stiffness.
Q: What Power Amplifier is best for this B & W 803 D4 pair for max output?
A: We've used amplifiers ranging from 60W all the way up to 500W. We'd recommend staying away from using an AVR to power these speakers. Look for a good integrated amplifier, a dedicated pre-amplifier with a separate amplifier or add a separate amplifier to an AVR if you already have one.

803 D4 is our most compact model that makes use of all 800 Series Diamond technologies. 803 D4 steps up from 804 D4 by completely isolating the Continuum midrange driver in a separate enclosure called the Turbine Head. This all-aluminium enclosure is an inert housing for the midrange driver that avoids unwanted resonances and is decoupled from both the bass enclosure and the tweeter body. Cabinet stiffness has been increased with an Aluminium Plate that reinforces the top of the cabinet. Midrange performance has been dramatically improved with a new Biomemetic Suspension that replaces a conventional fabric spider with a groundbreaking innovation that reduces distortion behind the drive unit. The Solid Body Tweeter enclosure has been elongated, increasing air volume behind the diamond tweeter which improves the openness in high frequencies. The top section’s aluminium top-plate is covered in Leather by Connolly trim. We use luxurious, full-grain black leather for Gloss Black and Satin Rosenut finishes, and a light grey leather for White and Satin Walnut. Each new generation of 800 Series Diamond is a landmark event for Bowers & Wilkins. This is our benchmark and the most advanced range of loudspeakers we know how to make, equipped with our most sophisticated technologies and designed to deliver the upmost in sonic realism. The 800 Series Diamond is everything we know, and everything we are.

703 S3 now features our iconic Tweeter-on-Top configuration, transforming its ability to render detail and space. That breakthrough, plus its decoupled FST Continuum cone midrange driver– enhanced by the addition of our revolutionary Biomimetic Suspension – combine to make 703 S3 an exceptional loudspeaker. Its twin Aerofoil Profile bass drivers mean it can fill even the largest rooms with full bodied, realistic sound.

CWM8.3 D is a three-way in-wall loudspeaker, conceived to offer the very best performance for a customer requiring great sound without seeing the source. Performance is equivalent to the 804 D4 in-room speaker from the 800 Series Diamond. Its 1-inch tweeter, 5-inch midrange driver and two 7-inch bass drivers deliver clear, dynamic sound, and the stiff yet light construction ensures distortion-free sound. This Bowers & Wilkins in-wall speaker can be used either horizontally or vertically for versatile placement. Use of BB8.3W Back Box is mandatory. Fully Matrix braced, for extra rigidity and improved performance the back boxes feature bi-wireable cables that connect to the baffle electronically with a multi-pin connector. The Bowers & Wilkins CI800 Series Diamond range of custom installation speakers is engineered for discerning customers who demand great hi-fi and home cinema sound from loudspeakers that occupy minimal space. This exceptional range of in-wall and in-ceiling loudspeakers features all the key transducer technologies developed for the globally renowned 800 Series Diamond including Diamond dome tweeters, Continuum midrange drivers and Aerofoil bass cones. The result is outstanding levels of performance that once again raise the bar for custom installation loudspeakers.

702 S3 is our 700 Series flagship: a state-of-the-art floorstanding speaker that defines standards for performance in its class. Its Carbon Dome tweeter is housed in a Solid Body Tweeter assembly, derived from 800 Series Diamond. That ensures even more realistic treble, while its decoupled midrange assembly, enhanced here with our revolutionary Biomimetic Suspension, provides outstanding midrange transparency and openness. And thanks to its downward-firing port configuration and its trio of Aerofoil Profile bass cones, 702 S3 can deliver bass that’s both profoundly deep and endlessly articulate. If you want the best in the series, this is it.
| Pros for Bowers & Wilkins - 803 D4 Diamond 1" Diamond Tweeter, 5" Midrange in Turbine Head, Dual 7" Woofer Floorstanding Speaker (each) - Gloss Black | |||
|---|---|---|---|
| Sound Quality | Sound Quality | There were no pros for this product— | Sound Quality, Bass, Design, Power |
Customers have good things to say about the 803 D4 Diamond speakers. The sound quality is surprisingly good when used in a properly treated room. There are no negative comments about the product.
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
These sound surprisingly good in a properly room treated area. Extreamly detailed with insane sounstage and imagry. They are very bright, however, so if you're looking for true neutral/accurate sound, i'd get the kef blades or any 3 way studio monitors like atc, pmc, etc... these definitely have a "sound" to them that is not for everyone. I use them mostly for movies over music because i find the insane detail and bright forwardness work very well with movies that have a lot of gunfire and explosions. They sound best with neutral or warm amps, specifically mcintosh and anthem. I have them bi wired with an onkyo receiver currently, and I never have issues with clipping at the volumes I listen to. I doubt these would consume over 150w even at reference levels for indoors, so while their is debate on headroom and sound signatires with amps, i personallg don't think the differences are as substantial as people make it out to be especially on the movie side of things. Would recommend slight tow in and a subwoofer. The mid sub frequencies are amazing on these (like bass guitar). However, any actual bass (below 60hz id say) is pretty mediocre. I have them paired with a pair of adam audio sub15 subwoofers for now.
AustinP Posted
What can I say I’ve own a series of Sonos Faber home all the way to Cremona’s , the last 20 years I believe they were the best speakers ever made nothing until I started auditioning Diamond series, Bowers & Wilkins it took me a while to justify the purchase. It brings music to life as if they are in front of you.
JeffreyL Posted
Wonderful speaker, i have enjoyed listening to both music and movies.
TomS Posted