Definitive Technology BP20 Speakers

Description

The Definitive Technology BP20 is a classic bipolar floor-standing loudspeaker introduced in the 1990s by Definitive Technology. Designed during a period when home theater and high-performance stereo systems were rapidly evolving, the BP20 became known for its spacious soundstage, powerful dynamics, and innovative bipolar speaker design. Built as a full-range tower speaker, the BP20 was engineered to deliver both audiophile-grade music reproduction and immersive movie sound for large listening rooms.

At the heart of the BP20’s design is Definitive Technology’s bipolar speaker configuration, in which drivers fire both forward and backward from the cabinet. Unlike conventional speakers that project sound primarily toward the listener, a bipolar design disperses sound energy in multiple directions. This approach produces a much wider and deeper soundstage, creating a room-filling listening experience that many enthusiasts compare to live music or a theater environment.

The BP20 uses a tall, slim cabinet wrapped in acoustically transparent fabric, a distinctive design element that became a hallmark of the company’s speaker lineup. Inside the enclosure, the BP20 incorporates multiple midrange drivers and aluminum dome tweeters arranged in both front- and rear-facing arrays, allowing the speaker to reproduce music with a blend of precision and spaciousness. This configuration helps maintain consistent tonal balance while expanding the perceived size of the soundstage.

Another key characteristic of the BP20 is its high sensitivity and efficient driver design, allowing it to perform well with a wide range of amplifiers—from mid-power stereo receivers to high-current audiophile power amplifiers. Because of this flexibility, the BP20 was frequently used in both two-channel stereo systems and multi-channel home theater setups.

Listeners often praise the BP20 for its natural midrange, detailed treble response, and large-scale presentation. Instruments and vocals appear to float within a broad acoustic field rather than being confined to the speakers themselves. For movie soundtracks, the speaker’s ability to project sound throughout the room creates an enveloping and cinematic listening experience.

In addition to its sonic performance, the BP20 was designed for durability and long-term reliability. The heavy internal bracing and high-quality drivers help reduce cabinet resonance and distortion, contributing to cleaner sound reproduction even at high listening levels.

Although newer models have replaced it in Definitive Technology’s lineup, the BP20 remains a respected vintage loudspeaker among audio enthusiasts. Many collectors and home theater fans still seek out these speakers for their distinctive bipolar sound signature and strong performance, even decades after their original release.

Review Quotes

“A huge, room-filling soundstage that makes music feel larger than life.”

“The bipolar design creates a spacious and immersive presentation.”

“Excellent clarity and dynamics, especially for large listening rooms.”

These comments reflect the BP20’s reputation for delivering wide imaging, powerful dynamics, and engaging musical detail—qualities that helped establish Definitive Technology as a major name in home audio.

Product Specifications

• Speaker Type: Bipolar floor-standing loudspeaker

• Design: Dual-array bipolar driver configuration (front and rear firing)

• Frequency Response: Approximately 22 Hz – 30 kHz (typical published range)

• Nominal Impedance: 8 ohms

• Sensitivity: ~90–92 dB (1 watt / 1 meter)

• Recommended Amplifier Power: 20 – 300 watts per channel

• Drivers (typical configuration):

  • Aluminum dome tweeters

  • Multiple midrange drivers in bipolar arrangement

• Cabinet Design: Tall tower with acoustically transparent fabric wrap

• Enclosure Type: Bass-reflex / tuned port system

• Dimensions (approx.):

  • Height: ~48 in (122 cm)

  • Width: ~7 in (18 cm)

  • Depth: ~12 in (30 cm)

• Weight: ~60–70 lb (27–32 kg) each

• Finish: Black fabric grille with solid base

• Manufacturer: Definitive Technology

• Category: High-performance stereo / home theater loudspeaker