Grundig Audiorama 4000 (c. 1972–1975)
The Grundig Audiorama 4000 is a pair of white spheres on chrome tulip bases. They look more like something from a sci-fi film set than loudspeakers. These are spherical, 2-way sealed speakers developed in Germany at the beginning of the 1970s, and they remain one of Grundig’s most visually striking audio products.
The sphere isn’t only styling. The ball shape radiates sound in 360 degrees, and period listings describe the sound as “practically not localized,” meaning the music fills the room instead of coming from two boxes. Each speaker houses 13 cm drivers, with a crossover set at approximately 2,500 Hz. Nominal impedance is 4 ohms, power handling is 40 watts RMS, and frequency response is rated from 45 Hz up to 20,000 Hz. Some sources stretch that to 26,000 Hz, though the lower figure is more commonly cited. Internal volume is roughly 7 liters, and each speaker weighs 6.8 kg. They stand 800 mm tall on their tulip bases, and the connecting cable is a fixed DIN 41 529 plug.
Documentation on the Audiorama 4000 is thin. There is no original price, no formal reviews from the period, and no detailed driver specs beyond that 13 cm figure. What survives is mostly marketplace listings and enthusiast chatter, but the record is consistent: these were made in Germany, sold as a set, and designed to be mounted either on their aluminum tulip bases or suspended from the ceiling with steel cable. The related Audiorama 8000, produced a few years later (1975-78), used four drivers per sphere. The 4000 is the earlier, simpler two-way version.
Collector interest has kept these in circulation. A serviced pair was listed for £650 cash, another set on Etsy at £2,484.05, and European listings have appeared around €300 - €900 depending on condition. Owners consistently describe them as working well and in good cosmetic shape for their age, with one seller noting “very good original condition with excellent sound quality.” No common failure points or repair procedures are documented.
Known specifications:
- Type: Spherical 2-way sealed speaker
- Power handling: 40 W RMS
- Impedance: 4 Ω
- Frequency response: 45 Hz – 20,000 Hz (some sources cite 26,000 Hz)
- Crossover frequency: ~2,500 Hz
- Drivers: 13 cm (each)
- Internal volume: ~7 liters
- Weight: 6.8 kg each
- Height: 800 mm
- Mounting: Aluminum tulip base or ceiling suspension
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