Tandberg Hi-Fi System 18(1971)

The Tandberg Hi-Fi System 18, produced around 1971–1972, is a compact 2-way loudspeaker system designed by Tandberg, a Norwegian brand renowned for its high-quality audio equipment. Part of Tandberg’s Hi-Fi speaker lineup, this bookshelf speaker is celebrated for its balanced sound reproduction and minimalist Scandinavian design, making it a favorite among vintage audio collectors.

• Type: 2-way, 2-driver loudspeaker system

• Frequency Response: 50 Hz–18 kHz

• Impedance: 4 ohms

• Sensitivity: 8 W

• Power Handling: 20 W (DIN 45573)

• Bass Driver: 1 x HTB 126, 5" cone, 4 ohms

• Tweeter: 1 x HT 125, 2.25", 4 ohms

• Crossover Frequency: 3500 Hz

• Crossover Components: 1 inductor (L), 2 capacitors (C), 1 resistor (R)

• Enclosure: Sealed, 3.5 liters internal volume

• Cabinet: Teak, rosewood, or oak with wooden slats and perforated metal front

• Dimensions (W x H x D): 23.5 x 23.5 x 11 cm

• Weight: 3 kg

• Original Price: 325 NOK (teak), 350 NOK (rosewood), 325 NOK (oak)

• Driver Design: The 5" HTB 126 woofer delivers solid bass for its size, while the 2.25" HT 125 tweeter ensures crisp highs, contributing to a well-balanced soundstage suitable for small to medium rooms.

• Crossover Network: The simple yet effective crossover at 3500 Hz uses minimal components (1 inductor, 2 capacitors, 1 resistor) to maintain signal purity and seamless driver integration.

• Compact Enclosure: The 3.5-liter sealed cabinet minimizes resonance, enhancing clarity and accuracy, ideal for bookshelf or wall-mounted setups.

• Build Quality: The Hi-Fi System 18 features Tandberg’s signature craftsmanship with premium wood finishes (teak, rosewood, or oak) and a distinctive front grille combining wooden slats and perforated metal for acoustic transparency and aesthetic appeal.

• Performance: With a frequency range of 50 Hz–18 kHz, it offers clear vocals and detailed highs, though bass depth is limited due to the small woofer and enclosure size. Its 4-ohm impedance and 20 W power handling make it compatible with Tandberg’s amplifiers, like the Hi-Fi FM receiver, for a cohesive vintage setup.