I love my Extrema speakers so much I bought a full set of replacement drivers and cross-overs from Sumiko in 2012 in case anything ever went wrong... it didn't and now I'm selling the Extremas, so it's time for these parts to go. They are all in boxes originally shipped to me, opened only to inspect but never taken out or used. Full set includes Dynaudio’s Esotar 330T/SF: a 28mm soft dome that was rightly regarded as one of the best around at the time; the mid/bass drivers are 19cm Audio Technology Flex Units; the passive radiators are (I assume) TDL 3020GT03 (since the B139 was no longer made by that time). Also included are SF crossovers for the Extremas. The full set cost $4,880 from Sumiko at the time - asking $2,900. Would prefer local pickup (Westchester County, NY) - will include UPS Ground Shipping in the US only. Paypal F to F or pickup yourself with cash only. Email with questions.