B&W Nautilus 801 (1998–?)

At 229 pounds, it doesn’t just occupy space—it commands it, with a presence as physical as its sound is visceral.

Overview

The B&W Nautilus 801 isn’t a speaker you casually place in a room. It’s a statement, a sculptural commitment to audio engineering pushed to its aesthetic and acoustic limits. Introduced in 1998 as the flagship of Bowers & Wilkins’ 800 series, the Nautilus 801 embodies the culmination of decades of loudspeaker research, wrapped in a design so radical it borders on architectural. At $11,000 per pair in 2001, it wasn’t for the hesitant—this was gear for studios, audiophiles with space and budget, and those chasing the elusive threshold where hi-fi stops being reproduction and starts feeling like performance.

Its 229-pound mass isn’t just from dense drivers and braced enclosures; it’s from the sheer complexity of its form. Each driver lives in its own acoustically isolated chamber, with the tweeter and midrange housed in a curvaceous, independently rotatable enclosure that resembles a high-tech periscope. This isn’t for show—diffraction control was paramount, and B&W went full-organic in shape to eliminate edge reflections. The result is a speaker that looks like it was grown, not built, with flowing lines that echo the Nautilus shell from which it draws its name.

Despite its size and price, owners report a speaker that demands attention on its own terms. It doesn’t blend into the background; in fact, one reviewer noted it tends to “lose a sense of life” when used for background music. These are speakers for listening, not ambient filler. They thrive at live-level volumes, where their dynamics and integration come alive. And they demand power—owners consistently report that the Nautilus 801 “drinks up the power like champions,” with solid-state bi-amping from high-current amplifiers like Krell and Ayre cited as ideal pairings.

Specifications

Key Features

15" Paper/Kevlar Woofer with Downward-Firing Flowport

The bass driver is a 15-inch composite of paper and Kevlar, chosen for rigidity and low resonance. Rather than a traditional front- or rear-firing port, the bass chamber vents downward through a dimpled Flowport onto a tapered base. This design minimizes turbulence and boundary interference, allowing tighter, more controlled low-end output. The -6dB point at 23Hz suggests deep extension, but real-world performance benefits from positioning near a front wall, where bass response strengthens significantly.

6" Woven Kevlar FST Suspensionless Midrange in Marlan Enclosure

Housed in a high-gloss black shell made of Marlan—a synthetic resin—the midrange driver uses B&W’s Fixed Suspension Transducer (FST) technology, eliminating the traditional surround to reduce distortion and coloration. The entire midrange enclosure is mechanically isolated using IsoPath, a damping compound consisting of liquid suspended in a polymer base. This isolation prevents energy transfer from the woofer and ensures the midrange operates in a stable acoustic environment. Reviewers consistently praise the midrange for its clarity, noting that “fundamental tones and harmonics of the piano are just right.”

1" Aluminum-Dome Tweeter in Acoustic Tube Housing

Mounted in a structure that resembles a large microphone or horn, the 1-inch aluminum-dome tweeter is part of B&W’s Nautilus technology, where a tapered tube extends from the rear of the driver to absorb and dissipate rearward energy. This prevents internal reflections that could smear high-frequency detail. The result is a tweeter that delivers extended highs with low coloration, though some owners have noted a bright or “steely” character in certain setups, suggesting system synergy is critical.

Rotatable Mid/High-Frequency Enclosure with Level Controls

One of the most distinctive physical features is the ability to independently rotate the midrange and tweeter enclosure relative to the woofer cabinet. This allows fine-tuning of the speaker’s vertical dispersion to match room acoustics and listening height. On the back of this enclosure are level controls for both the midrange and high-frequency drivers, enabling tonal balancing based on room placement or personal preference.

Computer-Optimized Crossover with Low-Distortion Design

The crossover network was designed using computer modeling, with component values determined via the optimal value method to minimize distortion. Set at 350Hz and 4kHz, the crossover points reflect a deliberate division of labor: the 15-inch woofer handles only the deepest fundamentals, while the midrange takes on the critical vocal and instrumental midband with minimal overlap. This contributes to the seamless integration noted by reviewers, where “the three drivers combine with seamless integration.”

Automatic Overload Protection Circuit with LED Indicator

An often-overlooked but critical feature is the built-in protection circuit, which guards against transient spikes, thermal overloads, and amplifier DC leakage. When triggered, an LED illuminates and the input signal is cut off, preventing damage to the drivers. While this adds reliability, it also implies sensitivity to amplifier stability—users on forums have described the Nautilus 801 as “a good example of a non-tube-friendly speaker load,” suggesting caution with certain amplifier types.

Historical Context

The Nautilus 801 is part of Bowers & Wilkins’ 800 series, a lineage that traces back to the original 801, which gained legendary status as a studio monitor. Earlier 801 models were used at EMI Abbey Road Studio, as well as at CBS, Polydor, and Gramophone studios, cementing B&W’s reputation in professional audio. The Nautilus 801, introduced in 1998, represented a technological leap, incorporating lessons from the experimental Nautilus prototype into a production flagship. Its design philosophy—particularly the tapered tube loading and isolated driver chambers—was later trickled down to other models in the Nautilus line, influencing the entire high-end range.

Collectibility & Value

Current market listings show significant variation: a used pair appeared on eBay for $21,499.38, while another in “Excellent condition” was listed on Reverb for $5,350. This wide spread suggests condition, provenance, and market perception play major roles in valuation. No common failure points are documented in the fact sheet, but forum discussions indicate concern about servicing, with users seeking service manuals and asking about “common failure modes.” The lack of available repair information may contribute to risk-averse pricing among buyers.

eBay Listings

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Related Models

• B&W 803
• B&W Nautilus 801 (1993-2000)
• B&W DM602 S3
• Akai AM-2850 (1975)
• Akai AP-206 (1975)
• Nakamichi BX-1 (1985)
• Acoustic Research research-ar-17 (1978)
• Acoustic Research AR-19 (1994)
• Acoustic Research AR-1W (1954)
• Acoustic Research AR-28S (1992)