B4000 Symphony No1
BozakEstimated price (community-sourced)
Around — community and catalog average, updates slowly
About the B4000 Symphony No1
The Bozak B-4000 Symphony No1 is a top-level floor-type speaker system featuring a 3-way, 11-speaker design. It includes two 30 cm cone type woofers (B-199A) with felted paper cones mixed with wool for light weight and low distortion bass, a 20 cm cone type mid-range (B-800B), and eight 5 cm cone type tweeters (B-200Y) with a special metal diaphragm damping method for smooth playback. The enclosure has a symmetrical unit layout and a walnut oil finish. It supports multi-amplifier operation with a selector switch and terminals. The system covers a frequency range from 35 Hz to 20 kHz with an impedance of 8 ohms and a rated input of 60 watts. Crossover frequencies are set at 400 Hz and 2.5 kHz with a 6 dB/octave slope. The speaker measures 700 mm wide, 1100 mm high, and 400 mm deep, weighing 68 kg. It was originally priced around ¥227,900 in 1966 and is considered one of Bozak's best speakers, suitable for medium-sized rooms and compatible with both tube and solid-state amplifiers.
Specifications
Transducer Specifications
Driver and acoustic performance characteristics
- Impedance
- 8Ω
- Frequency Response
- 35 Hz - 20 kHz
- Power Handling
- 60W
Speaker Design
Driver configuration and enclosure design
- Configuration
- 3-way
- Driver Type
- cone
- Driver Size
- 30"
- Driver Count
- 11
- Crossover Frequency
- 400 Hz
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 700 × 1100 × 400 mm (W × H × D)
- Weight
- 68 kg (150 lbs)
- Available Colors
- Walnut oil
Key Specifications
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions