SkyDover Posted August 30 Share Posted August 30 Anyone thinking of getting Kappa woofers might want to consider these at Parts Express, product 299-2251 https://www.parts-express.com/Eminence-Professional-15-Paper-Cone-Woofer-3-Ohm-299-2251?quantity=1 They are new old stock factory buyout made by Eminence with 80/95oz Mags and weight about 20-pounds. They perform more like the Eminence Kappa 15LFA but these are 4-ohm version. They are $79.88 each and free shipping on orders over $99 plus right now 13% off for Labor Day sale brings it to $69.50 each. These usually cost around $180 to $195 each. I ordered a pair. Specs: Model Kappa 15 Part Number 299-2251 Made in the USA Weight 20 Large 3” diameter voice coil handles up to 450 watts RMS Power Handling Power Handling (MAX) 900 Watts Vented pole piece and large ferrite motor helps dissipate heat and minimize power compression Resonant Frequency (Fs) 27Hz DC Resistance (Re) 2.8Ω Voice Coil Inductance (Le) 0.83mH Mechanical Q (Qms) 7.46 Electromagnetic Q (Qes) 0.3 Total Q (Qts) 0.29 Compliance Equivalent Volume (Vas) 12.6ft³ Mechanical Compliance of Suspension (Cms) 0.34mm/N BL Product (BL) 12.7T·m Diaphragm Mass Inc. Airload (Mms) 99.2g Maximum Linear Excursion (Xmax) 3mm Surface Area of Cone (Sd) 862.6cm² 2 1 Quote Link to comment Share on other sites More sharing options...
SkyDover Posted August 30 Author Share Posted August 30 Sims in WinISD and Hornresp: 1 Quote Link to comment Share on other sites More sharing options...
SkyDover Posted August 30 Author Share Posted August 30 I got around to testing mine so far they are working out nicely and sound good. They are heavy, seems about twice the weight of my K-33 woofers. Quote Link to comment Share on other sites More sharing options...
Edgar Posted August 30 Share Posted August 30 5 minutes ago, SkyDover said: I got around to testing mine so far they are working out nicely and sound good. Can you measure T/S parameters? I'm curious as to how well they agree with Eminence's claimed specs. Quote Link to comment Share on other sites More sharing options...
SkyDover Posted August 30 Author Share Posted August 30 I wish I could, my son borrowed my equipment and I haven't seen it in about 8 months now. He's supposed to bring it back on his next visit back home. I've just been testing by ear so far, sorry about that! Quote Link to comment Share on other sites More sharing options...
Edgar Posted August 30 Share Posted August 30 9 hours ago, SkyDover said: my son borrowed my equipment and I haven't seen it in about 8 months now Understood. If you ever get the opportunity, please post your results. I've been frustrated by measured parameters that disagree with published parameters by significant amounts. 1 Quote Link to comment Share on other sites More sharing options...
Khornukopia Posted August 30 Share Posted August 30 These are listed as 3 Ohm. Quote Link to comment Share on other sites More sharing options...
SkyDover Posted August 30 Author Share Posted August 30 Khornukopia, It's still considered generally to be a 4-ohm woofer though, it's RE is 2.8 and the Eminence Legend CA154 RE is 2.92 but you will see Eminence list it as a 4-ohm woofer. You can see the sims I did take in ohm calculations between each and show the differences, that's why the woofers are in the 101db/102db output range. Quote Link to comment Share on other sites More sharing options...
SkyDover Posted August 30 Author Share Posted August 30 Will do Edgar, thanks :) 1 Quote Link to comment Share on other sites More sharing options...
Khornukopia Posted August 31 Share Posted August 31 21 hours ago, SkyDover said: it's RE is 2.8 Just as long as a buyer is aware that this could cause SOME amplifiers to get hot. Eminence suggests these are good for multi-driver (wired in series) cabinets. Quote Link to comment Share on other sites More sharing options...
SkyDover Posted August 31 Author Share Posted August 31 Good point, if using dual + drivers you would want to do it in series, same for the K-33. My K-33 have a RE of 3.4 but my amps are running the same for the buyout Eminence woofer as it did the K-33, my amps run cool and maybe slightly warm if on over 8 hours in summer time, but my amps can handle 2-ohms without any problem but the flea tube amp I used to have ran the K-33 just fine but I never push the volume over in the hearing damage zone range. I've never had an amp overheat on me thank goodness! Quote Link to comment Share on other sites More sharing options...
SkyDover Posted October 2 Author Share Posted October 2 Wow, Parts Express just put these hefty woofers on sale for $47.93 each. I thought they were a bargain at $79.88! Never thought a woofer like this built like a tank to go for so cheap and still free shipping on orders over $99. I might have to order two more at this price! It doesn't say how long the sale is going on for, I just happened to see they were on sale. Quote Link to comment Share on other sites More sharing options...
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