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• very well maintained • ran with my other two in my home theater, but too big, hence the sale • original condition! • preferably only pickup, germany! Near dortmund - 40min behind
Condition is unknown, so at €550 this reads as reasonable-to-good rather than a slam-dunk bargain, assuming the cabinets, drivers, and Speakon sockets are all healthy. The RS-218B is a serious dual-18 passive sub with 1200 W RMS / 2400 W peak, 4 Ω parallel operation, 104 dB sensitivity, and 138 dB max SPL, so it has the output to earn its keep in real PA use.
What makes it worthwhile is simple: this is a high-output, efficient box that can move a lot of air without needing absurd amplifier power, and the dual 18" format is exactly what you want for dance music, live band kick, or general low-end reinforcement. Because condition is not stated, I’d want to confirm both drivers are original and symmetrical, the cabinet is dry and not blown out, and the impedance/wiring mode is correct before handing over cash; if those check out, €550 looks like a solid buy.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Synq is a Belgian professional-audio brand whose roots go back to 1961 through Beglec NV, a sound-and-light supplier that launched the Synq name in 2003. The company says it created the brand to make high-end professional sound solutions more widely accessible, beginning with the XTRM-1 DJ turntable, and that product development has taken place in Belgium.
In practical terms, Synq is known mainly for PA and DJ-oriented equipment rather than domestic hi-fi separates. Its range includes speakers, amplifiers, subwoofers, mixers, DI boxes, headphones, and turntables, with a clear emphasis on professional use, reliability, and user comfort.
In the market, Synq sits as a professional high-end / upper-mid-tier niche brand rather than a luxury audiophile name. It is aimed at clubs, venues, rental applications, and installed sound systems, and its reputation is built more on rugged, dependable performance than on prestige or collector appeal.
See all Synq listings on RADAR.
