dylsda798 Posted May 23, 2003 Share Posted May 23, 2003 Can anyone tell me the values/specs of the k 33 e woofer used in the Klipschhorns/la scalas? I am trying to find something similar for my project. Thanks!! Quote Link to comment Share on other sites More sharing options...
Marvel Posted May 24, 2003 Share Posted May 24, 2003 This is the part # from Eminence, the makers of the speaker. SPEC 15162 PART # K-33 RE OHMS 3.39 FS HZ 34.46 LE MH .96 MMS GMS 78.59 QM 7.39 CMS mm/N .2714 QE .410 RMS NS/M 2.3037 QT .390 VAS LTRS 301.66 XMAX MM 8.20 SD SCM 889.59 BL TM 11.88 EBP 84.4 EFF % 2.91 SPL dB 96.6 Wattage 150rms The price from Klipsch is really very good. It would be hard to find other speakers with an Xmax like this. Marvel 1 Quote Link to comment Share on other sites More sharing options...
formica Posted May 27, 2003 Share Posted May 27, 2003 You wouldn't happen to have an Eminence part number for the K-22 or K-24 woofers from the Heresy? Quote Link to comment Share on other sites More sharing options...
Marvel Posted May 27, 2003 Share Posted May 27, 2003 I just wrote/emailed to Eminence to get the values for the K33. You can't order it directly from them, but the could probably give you the T/S parameters for the other models. If you order a hundred, you can have them make them for you. Marvel Quote Link to comment Share on other sites More sharing options...
tpg Posted May 27, 2003 Share Posted May 27, 2003 How much is the K-33 from Klipsch? I forget... And... that simple horn increases the SPL by 8dB? How? Quote Link to comment Share on other sites More sharing options...
Klewless Posted May 27, 2003 Share Posted May 27, 2003 The horn throat provides a load for the speaker (driver) to work with. Air by itself does not resist enough at low frequencies to get any work done. Hope that helps. 1 Quote Link to comment Share on other sites More sharing options...
Marvel Posted May 27, 2003 Share Posted May 27, 2003 Trey could give you the correct price, but I think the K-33 is about $130 US. They were right at $100 foir quite a while, but have gone up. Marvel Quote Link to comment Share on other sites More sharing options...
WMcD Posted May 28, 2003 Share Posted May 28, 2003 Regarding horns and increase in efficency. Horns act like megaphones act. This is to say that a conical cardboard megaphone is a simplifed horn. Cupped hands for shouting works too. So we can be confidant there is something a bit familiar going on. Much of getting something to be loud is a matter of air pressure. This is why the acoustic result is called sound pressure level. Or SPL. Then also, if you have a larger area with pressure, that is good too. The plain old direct radiator can't do much to create pressure in front of it because the pressure runs away around the side of the box. There is less air to push against. The first thing we could do is put a tube in front of the diaphragm. The air would be trapped in there and the diaphragm of the driver could pump air down the tube. Of course, with the tube, we've just shifted the problem, and created more. At the other end of the tube, open to the air, the pressure is coming out, and being sucked back in to create a resonance in the pipe. It is more than I can describe accurately. The pipe system only works well at resonant frequencies. Like a pipe organ. What to do? The solution is to let the pipe expand. There are specific equations to follow. One is the exponential. Now, in the expanding pipe, the pressure wave expands into a greater area. Done correctly, we have low pressure at the big end, and the area is much greater. The result is nifty. At the diaphragm end (throat of the horn) we have high pressure in a small area. At the big end (mouth) we have something close to atmospheric pressure but in a very large area. This is like having a diaphragm speaker about the size of the mouth. For example, in the LaScala, that would be a diaphram four square feet in area. Gil Quote Link to comment Share on other sites More sharing options...
tpg Posted May 28, 2003 Share Posted May 28, 2003 Thanks... you cleared that up. I am familiar with horn speakers... I know of the equations to figure them, etc. just was not entirely sure how exactly they worked. yes, I know, that makes no sense. I know what they do, and how to make them, just not how they do what they do. Anyway, thanks. Quote Link to comment Share on other sites More sharing options...
wireless Posted May 30, 2003 Share Posted May 30, 2003 ---------------- On 5/28/2003 8:46:51 PM William F. Gil McDermott wrote: Regarding horns and increase in efficency. <...> For example, in the LaScala, that would be a diaphram four square feet in area. ---------------- If this horn theory is so nifty, why do the LaScalas only go down to 53 Hz and the Belles down to 54 Hz, while the KLF and others reach down into the low 30s? Do the Belles and the LaScalas basically ride the coatails of the Khorn? Quote Link to comment Share on other sites More sharing options...
WMcD Posted June 1, 2003 Share Posted June 1, 2003 I can appreciate the problem of raw numbers. But that is not all that is going on. I have Forte II and they have very good bass for the size of the box. Same with Cornwalls. OTOH I have homemade K-Horns and bigger than Belle. Very generally speaking, the big horns work with great efficency. You can hear it. PWK reported that efficency and lack of distortion are directly related. And efficent bass horns have to be large. So, there is a tradeoff. You can have low bass at poor efficency, and potential for distortion. Or you can have some sacrifice of bass with high efficency in what is a large cabinet. You pretty much have to make those choices. Technically speaking, the big issue is where there is constant resistive loading by the air to the system to make the horn work. That happens in free space where the diaphragm, or horn mouth, is about 1/3 of a wavelength. If the mouth is in a corner, that can be reduced by a factor of 1/8 or more. Gil Quote Link to comment Share on other sites More sharing options...
norbert2000 Posted April 4, 2021 Share Posted April 4, 2021 Hi Marvel, I know that this is am old topic, but I have to try; The K-33 woofer specs were perfect, but I also need the values/specs of the k-55-V and K-77(T-35) used in the Klipschhorns, if you have them? Thank you Quote Link to comment Share on other sites More sharing options...
Marvel Posted April 5, 2021 Share Posted April 5, 2021 I don't have them, but the spec for the K-77 should be available as EV was good about publishing their specs. Probably the K-55-v as well. Quote Link to comment Share on other sites More sharing options...
OO1 Posted April 5, 2021 Share Posted April 5, 2021 14 hours ago, norbert2000 said: Hi Marvel, I know that this is am old topic, but I have to try; The K-33 woofer specs were perfect, but I also need the values/specs of the k-55-V and K-77(T-35) used in the Klipschhorns, if you have them? Thank you specs sheets are all over the internet Quote Link to comment Share on other sites More sharing options...
norbert2000 Posted April 6, 2021 Share Posted April 6, 2021 I'm searching now for almost two weeks and I couldn't find the specs for K-55-V and K-77(t35). I found only these for K-33. Quote Link to comment Share on other sites More sharing options...
moray james Posted April 6, 2021 Share Posted April 6, 2021 did you check with Atlas for data on the mid driver? I found the following in 20 seconds third listing on my search for the T35 this is the T35A. https://mypicsonline.net/archive/archives.telex.com/archives/EV/Horns/EDS/T35A EDS.pdf The polars are taken with the tweeter with its long axis in the vertical position (the way it was designed to be used). Quote Link to comment Share on other sites More sharing options...
norbert2000 Posted April 7, 2021 Share Posted April 7, 2021 Thank you James, I also found this file, but I need the specs to make the ZMA and FRD files. Size – inch RE - Ohm FS - Hz QM - QE - QT - RMS - Ns/m or kg/s MMS - Gramms CMS – mm/N VAS - Liters SD - Square cm BL - TM Pmax (Wattage) - W rms XMAX - mm LE - mH EBP - EFF - % SPL - dB 1 Quote Link to comment Share on other sites More sharing options...
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