BBZink Posted June 3, 2016 Share Posted June 3, 2016 I'm on day two with the Kappas in my Belles. They are deep and smooth. Sound great. how did you open them, top or bottom? Quote Link to comment Share on other sites More sharing options...
longdrive03 Posted September 10, 2016 Share Posted September 10, 2016 I've got some Eminence woofers that are 8 ohm (4.9 ohm Re) with specs very close to the K-33. If I use them in my Belle build will there be a -3db decrease in bass output? Any other concerns using 8 ohm? I know I will have to alter the crossover values. Thanks 1 Quote Link to comment Share on other sites More sharing options...
mustang guy Posted September 10, 2016 Share Posted September 10, 2016 longdrive. It may not be a huge difference in DCR, but the impedance may be very different as it is measured ACR and at varying frequencies. Which Eminence driver have you got? I can put the specs into WinISD and let you know. Quote Link to comment Share on other sites More sharing options...
longdrive03 Posted September 11, 2016 Share Posted September 11, 2016 MG, A friend has them and I tested them a while back and the only number on the was 11-15-046. Here the specs I got using WT2. Thanks. Buffer[1] Vas Ver 7.01 Completed: Sun Nov 09 21:57:31 2014 Drive level 69.504% [2.465 mA] Sine,LoZP(LV/LA)->Vas,21 pts ;------------------------------------------------------------------ Re = 4.9895 ohms Fs = 30.0773 Hz Zmax = 114.3375 ohms Qes = 0.3160 Qms = 6.9247 Qts = 0.3022 Le = 3.6119 mH (at 1 kHz) Diam = 336.5500 mm ( 13.2500 in ) Sd = 88958.8296 mm^2(137.8865 in^2) Vas = 289.3886 L ( 10.2197 ft^3) BL = 18.0167 N/A Mms = 108.7740 g Cms = 257.4179 uM/N Kms = 3884.7336 N/M Rms = 2.9685 R mechanical Efficiency = 2.3415 % Sensitivity= 95.7130 dB @1W/1m Sensitivity= 97.7634 dB @2.83Vrms/1m Krm = 8.289E-03 ohms Freq dependent resistance Erm = 808.551E-03 Rem=Krm*(2*pi*f)^Erm Kxm = 63.176E-03 Henries Freq dependent reactance Exm = 677.122E-03 Xem=Kxm*(2*pi*f)^Exm ;------------------------------------------------------------------ Ftest = 21.975 Hz Ftest/Fms = 0.7306 Test Mass used = 95.0000 g (Equal to 19.0 nickels) Test Mass (Ft=Fms*0.90) = 25.515 g (Add -69.485g for Ft=27.070) Test Mass (Ft=Fms*0.75) = 84.602 g (Add -10.398g for Ft=22.558) Quote Link to comment Share on other sites More sharing options...
mustang guy Posted September 11, 2016 Share Posted September 11, 2016 On my cell phone. Here are the t/s specs for the round magnet K-33. Perhaps you can compare these to your results. At first blush it looks like your driver would be OK. You need to consider how the crossover point will be influenced by the greater impedance. https://imgur.com/pOwb57S here are the K-33 square magnet specs https://imgur.com/jNN8AER hete are the K-43 specs (found in pro LS) https://imgur.com/ZE5vPuy Quote Link to comment Share on other sites More sharing options...
longdrive03 Posted September 11, 2016 Share Posted September 11, 2016 Thanks MG. I've got the round magnet versions and will test one today and post what I get. The .63QT on the square magnet is different than the round version as I recall. THanks. Quote Link to comment Share on other sites More sharing options...
longdrive03 Posted September 11, 2016 Share Posted September 11, 2016 I ran the K-33 through the WT2 and got the attached results. Looks like impedance at 400 hz is 5-6 ohms. K-33 15192 Klipsch 15 inch woofer K-33 15192 Klipsch 15 inch woofer IMPEDANCE GRAPH Quote Link to comment Share on other sites More sharing options...
longdrive03 Posted September 11, 2016 Share Posted September 11, 2016 Not sure if above attachment will open. Try this one Quote Link to comment Share on other sites More sharing options...
Zoef Posted September 12, 2016 Share Posted September 12, 2016 Faital Pro 15pr400. Quote Link to comment Share on other sites More sharing options...
Arash Posted September 12, 2016 Share Posted September 12, 2016 Faital Pro 15PR400 and 15FH520. both are light weight woofers. BD15 from Beyma is also a very nice 15 incher Quote Link to comment Share on other sites More sharing options...
mustang guy Posted September 13, 2016 Share Posted September 13, 2016 On 9/11/2016 at 3:45 PM, longdrive03 said: I ran the K-33 through the WT2 and got the attached results. Looks like impedance at 400 hz is 5-6 ohms. K-33 15192 Klipsch 15 inch woofer K-33 15192 Klipsch 15 inch woofer IMPEDANCE GRAPH Without an extension, it's hard to open a file. I figure the file is a woofer tester file. The top part has text, but doesn't match the specs in the photo you uploaded. Based on the picture, here is a comparison of your Eminence and the two different K-33's and K-43. Hope this helps! Quote Link to comment Share on other sites More sharing options...
longdrive03 Posted September 13, 2016 Share Posted September 13, 2016 MG, help out a fellow that isn't as talented, educated, and smart as you!!! What do the graphs tell you? What order would your rate the four woofers? Thanks. Quote Link to comment Share on other sites More sharing options...
longdrive03 Posted September 13, 2016 Share Posted September 13, 2016 MG, forgot to say thanks!!!!! Thanks for all your effort. Okay everyone which one would you choose based on the graphs???? Quote Link to comment Share on other sites More sharing options...
mustang guy Posted September 13, 2016 Share Posted September 13, 2016 No self effacing allowed here. Compliments generously accepted even though not deserved. I am an utter amateur at this. What I know is because I have either learned it here or been inspired to go out and learn it from here. The true Sifu's are lurking and hopefully will be kind when they critique my response. First, your woofer is measuring 3.385Ω not 4.9. There will be little or no effect on the crossover as compared to the designated driver. Second, the woofer you have seems very comparable in a 2cuft enclosure. 1st graph: Although it is -2db from the round magnet K-33, it is still better than the square magnet version. 2nd graph: based on the resonance of the 2cuft enclosure, the woofer acts about the same as and the pro K-43 woofer. Still in the middle of all the compared woofers approved for the LaScala. I don't know what the actual internal volume of the Bell Klipsch is, but the La Scala is 2.04 cu ft. 3rd graph: tells me the driver is more LF capable that all but the square magnet K-33. It is still in the middle of the 4 drivers compared. 4th graph: The timing of the woofer will be as good as the other drivers. The delays are the same. In my opinion, that woofer would work very well in a La Scala. If the Belle Klipsch has an enclosure with the same volume, it should work in it just as well. Quote Link to comment Share on other sites More sharing options...
JohnA Posted September 14, 2016 Share Posted September 14, 2016 On 11/7/2014 at 10:23 AM, ClaudeJ1 said: Everything is a compromise in engineering. I'ts 4 ohm impedance is desirable for Klipsch mid/treble horn sections because the woofer section needs to draw more power from the amp to keep up with the horns on all Klipsch products. That's not exactly untrue, but a little skewed. A 4 ohm woofer places the woofer's impedance closer to the 8 ohm industry standard. The bass horn loads the cone so that the woofer's impedance is 6+ ohms in a La Scala and Belle (and something similar in the K-horn), pretty close to the nominal 8 ohms of any speaker. Horn loading raises the efficiency to the 104 dB level. And, the autoformer increases the impedance of the 107 dB squawker to attenuate its output to line up with the woofer. The K-77s of the last 40 or more years have an impedance of 7.5-ish ohms and an output of 105 dB, pretty well in line with the other drivers. Pedantic? Well, ........ yeah. Quote Link to comment Share on other sites More sharing options...
longdrive03 Posted September 19, 2016 Share Posted September 19, 2016 Does anyone know if the hole spacing on the Kappa 15c is the same as the K--33. I know that Bob Crites steel 1526 is the same spacing. Just wondering if the 15C is the same since I've got the screw inserts in place in the motor board. Claude do you know? Thanks. Quote Link to comment Share on other sites More sharing options...
Marvel Posted September 19, 2016 Share Posted September 19, 2016 I believe they are the same since they are all made by Eminence. Bruce Quote Link to comment Share on other sites More sharing options...
jason str Posted September 19, 2016 Share Posted September 19, 2016 Same bolt pattern. Quote Link to comment Share on other sites More sharing options...
longdrive03 Posted September 19, 2016 Share Posted September 19, 2016 Does anyone know if the hole spacing on the Kappa 15c is the same as the K--33. I know that Bob Crites steel 1526 is the same spacing. Just wondering if the 15C is the same since I've got the screw inserts in place in the motor board. Claude do you know? Thanks. Quote Link to comment Share on other sites More sharing options...
longdrive03 Posted September 19, 2016 Share Posted September 19, 2016 Thanks guys, I also just got confirmation from Eminence they are the same mounting pattern. May try them out! Quote Link to comment Share on other sites More sharing options...
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