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I bought these speakers, used, two years ago. The cabinets were in poor condition (thin oak veneer on MDF) so I rebuilt them with plywood and construction grade American Black Walnut veneer. The large mid range driver has been upgraded to the 22MG driver. The Linkwitz crossover and Nord amplifier are 20 months old and replaced the original, old, crossover and amplifier. They do have an excellent sound stage but obviously hearing them in person is key. As an aside, I m not convinced about the need for the bridges. I get the theory but, in use, I can t hear a difference if I remove th... read more
Notable for its genuinely full-range, four-way open-baffle dipole design, the LX521.4 is an unusual speaker rather than a conventional box. At £4,500, though, this is an ambitious ask: it sits well above the comparable-listing median of £2,514 and beyond the 75th percentile of £3,507. It may still be justified by exceptional build quality or a complete active system, but it is not a typical used-market bargain.
The appeal is substantial: dipole radiation, unusually spacious imaging, and carefully integrated active crossover and amplification can produce an exceptionally transparent, holographic presentation. The key is verifying exactly what is included—PowerBoxes, amplification, crossover hardware, cables, and matching drivers—because “crossover” can describe very different configurations here. At this price, complete, tested electronics and excellent cosmetic condition are essential; otherwise, negotiation toward the established used range would be sensible.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
LINKWITZ is a specialist loudspeaker brand rooted in the work of Siegfried Linkwitz, the German-American engineer behind the influential Linkwitz Lab. The company’s modern identity traces to his loudspeaker research and to the continuation of that work after his death in 2018; the brand is closely associated with Germany and with Linkwitz’s long-running design philosophy rather than a broad consumer-audio empire.
Its core focus is high-end loudspeakers, especially large-format active dipole and holographic systems such as the LX521 series. Available information points strongly to speaker systems, associated amplifier packages, and related accessories rather than a wide catalog of turntables, DACs, headphones, or cables. The brand is therefore much more specialist than generalist hi-fi makers.
In market terms, LINKWITZ sits in the niche boutique high-end segment. Its products are aimed at serious listeners who value accuracy, imaging, and custom-like engineering over mainstream convenience, and its reputation is tied to a very particular school of loudspeaker design rather than mass-market recognition.
See all LINKWITZ listings on RADAR.
