Martin Logan Spire Hybrid Panel and powered 10" woofer. Modifications to external crossovers and granite bass cabinets, Cerabase feet, Z-axis power leads. I have rebuilt crossovers using ClarityCaps MR capacitors, Mundorf CFC16 foil Inductors and Duelund CAST resistors, optimally arranged on tufnol boards, These have pushed the Spire into the top level of speakers i have heard.
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