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Thomas e Maslanka Jr.

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  1. Willand - the cones are warped from heat or tiny hands. The dust covers are loose thats no big deal. jjptkd -These sb drivers have an 8ohm option different t/s parameters. moray james- these drivers are from madisound and are 27.00 each the simply speakers are 79.00 or 75.00 and are a little out of my range. I understand these are paper cones not ceramettalic . I have the center and matching surrounds in good condition. I'm sure I'll notice poor integration. These are just to get by till i do some more negotiating for some 80's Klipschorns which i will not make any cheap substitutions.p Pictures forth coming.
  2. Just seeing if anyone thinks this sb acoustics 8 inch driver would be a suitable replacement for a pair of RF3 towers. SB20PFC30-4 8" paper cone woofer 4ohm. specs /nominal impedance 4ohms/dc resistance Re 3.4 ohms/ voice coil inductance Le0.71 mh/ effective piston area Sd 216 cm2/ voice coil diam. 30.5 mm/ voice coil hght 16.5mm/ air gap hght 5mm/ linear coil travel (p-p) 11.5mm/ magnetic flux density 1.2T/ magnet weight 0.54 kg/ net weight 1.43 kg/ Fs 33.7hz/ sensitivity (2.83V/1m) 92.5db/ Qms 2.78/ Qes 0.37/ Qts 0.33/ Mms 22.4 g/ Force factor Bl 6.6Tm/ Vas 66.2 ltrs/ Cms 1.0mm/N / Rms 1.7kg/s/ Rated power handling 50 watts.
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