Will be updating this as we move along building one of each. Each one will be relatively fresh with ~5 minutes of break-in time playing low frequencies on our bench 1500D. Amount of break-in between coil configurations isn't necessarily identical -- check CMS, a lower number indicates the suspension is still tighter. Stock 3 Hard Spider Suspension on each model with "daily" stock coils. Measured with Woofer Tester II unit ---------- 10" D2: RE: 3.92 ohms Fs: 50.9 Hz Qes: 0.51 Qms: 12.72 Qts: 0.49 Le: 7.06 mH Vas: 5.9 L BL: 25.89 NA Cms: 35.75 uM/N Mms: 272 grams Sens: 83.72 dB ---------- 10" D1: RE: 1.98 ohms Fs: 51.19 Hz Qes: 0.60 Qms: 13.06 Qts: 0.57 Le: 3.22 mH Vas: 5.83 L BL: 19.96 NA Cms: 34.95 uM/N Mms: 276 g Sens: 82.97 dB ---------- 12" D2: RE: 3.96 ohms Fs: 39.28 Hz Qes: 0.44 Qms: 13.60 Qts: 0.43 Le: 6.23 mH Vas: 14.83 L BL: 27.16 NA Cms: 48.49 uM/N Mms: 337 g Sens: 85.15 dB ---------- 12" D1: RE: 1.98 ohms Fs: 43.09 Hz Qes: 0.46 Qms: 12.80 Qts: 0.45 Le: 3.2 mH Vas: 12.83 L BL: 19.96 NA Cms: 39.37 uM/N Mms: 346 g Sens: 85.26 dB ---------- 15" D2: RE: 3.94 ohms Fs: 38.6 Hz Qes: 0.53 Qms: 14.02 Qts: 0.51 Le: 6.25 mH Vas: 38.38 L BL: 26.53 NA Cms: 43.6 uM/N Mms: 389 g Sens: 88.04 dB ---------- 15" D1: RE: 2.01 ohms Fs: 35.09 Hz Qes: 0.50 Qms: 13.46 Qts: 0.48 Le: 3.21 mH Vas: 44.68 L BL: 18.91 NA Cms: 50.76 uM/N Mms: 405 g Sens: 87.68 dB ---------- 18" D2: RE: 4.18 ohms Fs: 32.79 Hz Qes: 0.51 Qms: 13.69 Qts: 0.49 Le: 6.73 mH Vas: 92.74 L BL: 28.76 NA Cms: 47.55 uM/N Mms: 494 g Sens: 89.86 dB ---------- 18" D1: RE: 2.15 ohms Fs: 33.79 Hz Qes: 0.56 Qms: 14.44 Qts: 0.54 Le: 3.24 mH Vas: 90.33 L BL: 19.64 NA Cms: 46.3 uM/N Mms: 479 g Sens: 89.71 dB