JohnA Posted December 28, 2002 Share Posted December 28, 2002 This woofer looks like a E-V SP-12-something to me. Is it? It is in a pair of HIPs I bought. The crossover network is a Type AA with the values adjusted for the 700 Hz crossover of the squawker horn (8 uF instead of 13, woofer inductor in unknown). That means the horns are run at 104 dB! How can this little woofer keep up? They are pretty hot, but still have some bass. What technical specs can you provide? Klipsch says a recone *should* be possible, if one ever needs it. http://forums.klipsch.com/idealbb/files/K-42-EV.jpg Quote Link to comment Share on other sites More sharing options...
djk Posted December 29, 2002 Share Posted December 29, 2002 Private label (OEM) version of the EVM12L http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=23794&item=931683391 12L PL Fs=55hz Vas=2.9 cu ft Sd=78 sq in Re=5.20 ohms Qts=0.232 No=4.3% Xm=0.130 in Pe=300W I would recommend a quasi SBB4 for hi-fi, and just port it to 50hz(12 sq in X 4" long). These things get up to about 103dB/W in the 1Khz region. Again, for hi-fi I would change the taps to the same as a Cornwall, reduce the 8µF to 4µF, and add a zobel across the woofer. I don't know what the Le is so try about 22µF + 8 ohms to start. If you want to use it for PA just leave it the way it is. Quote Link to comment Share on other sites More sharing options...
JohnA Posted December 29, 2002 Author Share Posted December 29, 2002 Thanks djk, I thought you might know something about it. They will be used for portable PA use. I'm repainting the cabinets now, so they will look decent. John Quote Link to comment Share on other sites More sharing options...
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