tgourlie Posted April 28, 2002 Share Posted April 28, 2002 What kinds of Theile/Small parameters are ideal for a horn like the LaScala. Obviously you need a high sensetivity. But what about Qms, Qts, and Qes. Since I want my LaScala to go LOW so I am also looking for a low Fs, correct? Does anyone know what the K-77-E specs are. I want to get pretty close to the bass from the original but I really don't want to spend a lot. I'd rather have them just be loud and go low, than be as smooth and quality as the 77's. Does anyone have any suggestions. I may end up getting the 77's if there are no others. I know there is no substitution for great woofer in these folded enclosures, but I am just a poor college student. If I would spend 100's, I would just go all out and get a used pair off ebay. Thanks for any help. Quote Link to comment Share on other sites More sharing options...
JohnA Posted April 28, 2002 Share Posted April 28, 2002 Here are the T-S parameters for the K-33-E: Re=3.39 Fs=34.46 Le=.96 Mms=78.59 Qm=7.39 Cms=.2714 Qc=.410 Rms=2.3037 QT=.390 Vas=301.66 Xmax=8.20 Sd=889.59 Bl=11.88 EBP=84.4 Eff=2.91 SPL=96.6 you will not be able to make the bass horn go lower because it is too short. Mr. Paul states it is a 70 Hz cutoff frequency was the design goal for the bass horn. Based on this you will have to modify the design, build a different horn, or live with a 55-60 Hz low frequency limit. The Klipsch K-43 woofer is said to have a little more output, but it costs $250 each. John Quote Link to comment Share on other sites More sharing options...
WMcD Posted April 28, 2002 Share Posted April 28, 2002 I'm in total agreement with John. The Master picked the K-33 and you're not going to get any better hot rod unit. It is probably close to optimum, as far as a driver can go. The Fs parameter (alone) doesn't really tell us a whole lot in the application. The resonance of the combination of the bass horn and the driver is established by the flare rate of the horn and back chamber. Gil Quote Link to comment Share on other sites More sharing options...
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