Bang & Olufsen BeoCombi 1700 Cassette Deck (1978)

The Bang & Olufsen BeoCombi 1700 is a premium cassette deck introduced in 1978 as part of B&O’s prestigious 1700 series. Designed for audiophiles and design-conscious consumers alike, this deck exemplifies the Danish brand’s commitment to minimalist aesthetics, mechanical precision, and high-fidelity audio performance. With its advanced transport system and seamless integration into B&O’s modular audio systems, the 1700 remains a sought-after piece among vintage audio enthusiasts.

Key Features

Dolby B Noise Reduction – Reduces tape hiss for cleaner playback
3-Motor Transport System – Ensures precise tape handling and consistent speed control
Solenoid-Controlled Mechanisms – Provides smooth, reliable operation with minimal mechanical wear
Automatic Tape Type Detection – Optimizes bias and equalization for Type I, II, and IV tapes
Soft-Touch Button Controls – Elegant, low-profile interface with tactile feedback
B&O System Integration – Designed to integrate seamlessly with BeoCenter and BeoVision systems of the era

Specifications

Specification	Detail
Model	BeoCombi 1700
Brand	Bang & Olufsen
Year of Release	1978
Production Period	1978–1981
Format	Compact Cassette
Recording Speed	4.76 cm/s (standard)
Noise Reduction	Dolby B
Tape Type Detection	Automatic (Type I, II, IV)
Transport Mechanism	3-motor, solenoid actuated
Wow and Flutter	< 0.07% (measured)
Frequency Response	30 Hz – 18 kHz (with Dolby)
Total Harmonic Distortion	< 1.5%
Input/Output Level	Line-level (RCA)
Power Requirements	Integrated into BeoSystem (no standalone power supply)
Dimensions	420 × 120 × 290 mm (W×H×D)
Weight	8.5 kg

Historical Context

The BeoCombi 1700 was a flagship component in Bang & Olufsen’s 1700 series, a line of high-end audio equipment launched in the late 1970s. This series emphasized modular design, allowing users to combine components like turntables, amplifiers, and cassette decks into cohesive, furniture-grade audio systems. The 1700 cassette deck stood out for its advanced engineering, including a robust 3-motor transport and intelligent tape sensing—features typically found in professional or ultra-premium consumer decks.

B&O’s design philosophy during this era blended Scandinavian minimalism with cutting-edge technology. The 1700’s brushed aluminum faceplate, hidden mechanics, and soft-touch controls reflected this ethos, making it as much a piece of industrial art as a functional audio device. Its integration with BeoVision televisions and BeoCenter systems also positioned it at the forefront of home entertainment innovation.

Sound Signature

The BeoCombi 1700 delivers a clean, accurate, and balanced sound profile typical of high-end B&O equipment. Its low wow and flutter (<0.07%) ensure stable pitch and timing, while the wide frequency response captures both deep bass and extended highs. With Dolby B engaged, tape hiss is significantly reduced, enhancing the listening experience on standard and chrome tapes. The deck’s precision transport and high-quality playback head contribute to its reputation for faithful audio reproduction.

Common Issues and Maintenance Tips

Despite its robust build, the BeoCombi 1700 is now over four decades old, and several age-related issues are common:

Belt Degradation: Rubber belts can dry out and crack. Replacement with high-quality silicone belts is recommended.
Capacitor Aging: Electrolytic capacitors in power and signal paths may need replacement to restore performance and prevent damage.
Solenoid Wear: The solenoid-driven transport can become sluggish or fail. Cleaning and lubrication of mechanical linkages often help.
Auto-Stop Malfunction: Sensors and microswitches may fail; inspection and cleaning are advised.
Head Alignment and Wear: The playback head should be checked for alignment and demagnetized periodically for optimal performance.

Maintenance Recommendations:

Clean tape heads and pinch rollers regularly with isopropyl alcohol.
Demagnetize the tape path using a non-contact demagnetizer every 50–100 hours of use.
Store in a dry, dust-free environment to prevent oxidation and contamination.
Have the unit professionally serviced if transport functions are erratic or sound quality degrades.

Collectibility and Market Value

The BeoCombi 1700 holds a collectibility rating of 7/10. Its iconic design, association with the 1700 series, and B&O’s legacy contribute to its appeal. Units in working condition with original finishes command higher prices, especially when part of a complete BeoSystem setup.

Market Value: $100–$300 USD, depending on condition, functionality, and completeness
Rarity: Moderate – not extremely rare, but well-preserved examples are increasingly scarce
Restoration Potential: High – many parts are still available through specialist vendors or donor units

Conclusion

The Bang & Olufsen BeoCombi 1700 is more than just a cassette deck—it’s a symbol of 1970s audio excellence and design innovation. For collectors and vintage audio lovers, it offers a blend of sonic quality, mechanical sophistication, and timeless aesthetics. With proper care and maintenance, the 1700 continues to deliver a listening experience that honors its prestigious heritage.