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Aangeboden deze nette set vintage luidsprekers van heco heco sm 640 de speakers hebben onderhoud gehad: banaanaansluiting aangebracht de 10 inch woofers refoamed scheidingsfilters recapped de speakers
Should you grab these HECO SM 640s for €60, or is the catch hidden in the unknown condition? At €60, this asking price sits well above the estimated 2026 median of €35 for used pairs, making it an ambitious bid rather than a bargain, especially since listings on HifiShark show recent sales clustering near that lower median. Unless the seller includes original grilles, stands, or proof of pristine original-owner condition, the premium over the market norm is hard to justify for a model from 1973–1978.
These German 3-way sealed speakers are well-regarded for their tight bass and smooth midrange, driven by a 250mm woofer and 35Hz–25kHz response that still competes with modern standmounts in the right room. Their 8kg build and walnut or white finishes offer genuine retro charm, and if they function perfectly, they can deliver warm, detailed sound ideal for vintage receivers. However, with unknown condition and no accessory details, the €60 price demands caution: verify the drivers, check for dry capacitors, and confirm impedance stability before committing.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
HECO traces its roots to 1949, when Gerhard Richard Hennel and his wife Susanne founded Hennel & Co. KG in the German Taunus region town of Schmitten. Initially focused on manufacturing speaker chassis and baskets for cinemas and restaurants, the family business quickly pivoted to high-quality home audio, producing its first series-production speaker chassis in 1950 and the legendary compact B130 model by 1964. This heritage of German engineering precision has defined HECO for over seven decades, evolving through innovations like the 1951 Orchester Type C16 and early multichannel speaker sets.
The brand specializes in premium loudspeakers, with iconic series such as Superior (1987), Concerto Grosso, and Celan (launched 2005 and continually refined) anchoring its reputation. HECO has occasionally ventured into car audio with lines like Sprint and Turbo amplifiers in the 1990s, but its core strength remains floorstanding, bookshelf, and compact home speakers renowned for balanced, dynamic sound. Ambitious designs prioritize music reproduction in domestic settings, blending tradition with modern materials.
Positioned as a mid-to-high-end contender, HECO commands respect among discerning hi-fi enthusiasts for exceptional price-to-performance ratios, numerous test victories, and enduring series that rival pricier rivals. No longer a small family operation but part of Audio-Produkte GmbH, it sustains innovative momentum, delivering "true sound" that appeals to knowledgeable buyers seeking reliable German quality without ultra-boutique excess.
See all HECO listings on RADAR.
