fan4fan1 Posted February 4, 2013 Share Posted February 4, 2013 Wondering if anyone is familiar with the Klipsch K-48 15" woofer. I have a pair and I am thinking of using them for a build of La Scala knock-offs instead of the K-33 usually used in an LS bass section. For instance, are they similar enough to use the same AL crossover? Any help is appreciated! John Quote Link to comment Share on other sites More sharing options...
Guest " " Posted February 4, 2013 Share Posted February 4, 2013 Most of the k-48's I have seen are 8 ohms. K-33's are 4 ohms. So , you can't use them with out modifing the crossover. There are some k-48's out there that are 4 ohms.....so check to see if you have a 3.4/ 3.9 or 5.1/5.6 DCR. 3.ish would be 4 ohms and 5.ish would be 8 ohms. K-45's are 4 ohms and I have used them in LaScala's with no problem. Quote Link to comment Share on other sites More sharing options...
PrestonTom Posted February 4, 2013 Share Posted February 4, 2013 Probably not a good idea. Let's look at some T/S parameters. These will govern the required back volume and throat size etc. First Column is K-33 and 2nd col is K-48 Qts: .388 & .350 VAS: 301 & 166 liter Eff; 97 & 97 dB Fs: 34 & 42 Hz You need to decide whether these are close enough and whether you want to tweak the back volume and throat. Quote Link to comment Share on other sites More sharing options...
fan4fan1 Posted February 4, 2013 Author Share Posted February 4, 2013 Full disclosure: I'm the guy with the custom-made Scala "top" (see C-Horn in the Garage Sale forum), I was trying to sell it but I'm going to keep it instead and have a second one built. And I have a pair of the PA style KP-1000 bass cabs that I lucked into. I've already connected the top to the KP-1000 from the C-Horn's AL-3 crossover woofer taps. It works and sounds pretty good, but not great. A little "shouty" if you know what I mean.The bass is definitely there though, and they seem to match in volume. I am assuming the sound issue is because of the inherent mis-match you're referring to, whether it's the resistive difference between the drivers or a crossover mis-match to the K-48. Add to that the fact that the KP-1000 is a simpler ported box design, it may just not be meant to happen. But am I hurting anything by using the KP-1000 with the Scala top? At least until I have real Scala style bass-bins built?Thanks for the help! John Quote Link to comment Share on other sites More sharing options...
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