AI-generated approximation — not official manufacturer imagery.

901 mkII

Name: Bose 901 mkII
Brand: Bose

Bose

901 Series

LoudspeakersBookshelf SpeakersPowered LoudspeakersDiscontinued

Estimated price (community-sourced)

$500

About the 901 mkII

The Bose 901 mkII (Series II) is an iconic Direct/Reflecting loudspeaker system introduced in the early 1970s, utilizing one front-firing and eight rear-firing 4.5-inch full-range helical voice coil drivers to create 11% direct and 89% reflected sound dispersion. It requires an active equalizer inserted in the tape monitor loop or preamp out/main in for proper frequency response correction, with controls for mid-bass, mid-treble, and bass contour. The design aims to simulate live concert hall acoustics by leveraging room reflections. Production of the entire 901 line ended around 2017, making this vintage model no longer manufactured.

Specifications

Key Specifications

Sensitivity: 82.5 dB

Impedance: 8Ω

Full structured specifications are available to members.

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