901 mkII vs Bowers & Wilkins DM2A
The DM2A's sensitivity is 85 dB against the 901 mkII's 82.5 dB and its woofer 6" against 4.5". Both share impedance (8Ω) and low-frequency extension (50 Hz).
AI-generated product photo — not official manufacturer imagery.
LoudspeakersBookshelf SpeakersPowered LoudspeakersDiscontinued
Estimated price (community-sourced)
$500
Around — community and catalog average, updates slowly
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
Transducer Specifications
Driver and acoustic performance characteristics
- Sensitivity
- 82.5 dB SPL @ 1W/1m
- Impedance
- 8Ω
- Frequency Response
- 50 Hz - 15 kHz
Speaker Design
Driver configuration and enclosure design
- Driver Type
- full-range
- Driver Size
- 4.5"
- Driver Count
- 9
- Enclosure Type
- ported
Connectivity
Input and output connections
- Bluetooth
- No
- Wi-Fi
- No
- Ethernet
- No
- Analog Inputs
- line-level
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 330 × 70 × 127 mm (W × H × D)
- Weight
- 1.5 kg (3 lbs)
- Available Colors
- Black anodized aluminum
Key Specifications
Sensitivity: 82.5 dB
Impedance: 8Ω
Frequency: 50-15000 Hz
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions