Replaces Vifa D26NC-55-06 / D26NC-15-06 UK STOCK ITEM ATC SCM12, SCM7a (early), SCM35, SCM25a, Hafler TRM6, Royd RR2, Royd RR3, Miller & Kreisel (various models). This is the long awaited replacement for the highly respected D26NC15-06 and D26NC55-06. Perfect replacement, no modifications required. A downloadable datasheet is available from this page. We recommend changing in pairs to maintain channel balance as older versions often have reduced output due to ferrofluid thickening. Key Features: Specially treated pure silk dome Neodymium magnet assembly Heatsink for high power handling Ferrofluid cooled voice coil Wide and smooth response Perfect replacement for 15-06 & 55-06 variants Basic parameters: Resonant frequency (fs) 1625 Hz Nominal impedance (Zn) 6 Ω Effective diaphragm diameter 26 mm DC resistance (Re) 4.68 Ω Ferrofluid ? Y/N Yes RMS power handling 100 W Recommended crossover 2.5 kHz 18dB Faceplate diameter (cropped profile) 70 mm Sensitivity (2.83V/1m) 89.3 dB Cutout hole diameter 45 mm Here's the full datasheet: Peerless by Tymphany