Marvel Posted November 30, 2019 Share Posted November 30, 2019 21 hours ago, Randyh said: the K33 requires less power - 100 watts rating only ---- I believe that the k33 has had a 150 watt rating for qite a number of years. It also doesn't mean the newer ones are less efficient. Quote Link to comment Share on other sites More sharing options...
OO1 Posted November 30, 2019 Share Posted November 30, 2019 - Quote Link to comment Share on other sites More sharing options...
jason str Posted November 30, 2019 Share Posted November 30, 2019 17 minutes ago, Randyh said: Well , your usage of tube amps will preclude the Kappa 15C , it is rated at 450 watts , about 4 times more than a K33 -there is no substitute for the K33 and the older the K33 , the better it will be compatible with the Tube gear - this will also mean that your cost will be much lower as there are tons of old woofers out there and all you need is a good 15 inch musical woofer with the lesser power rating to be very efficient - Uh, no. Wattage rating is a thermal rating only and has nothing to do with what kind of gear one can use. 1 Quote Link to comment Share on other sites More sharing options...
OO1 Posted November 30, 2019 Share Posted November 30, 2019 - Quote Link to comment Share on other sites More sharing options...
jason str Posted November 30, 2019 Share Posted November 30, 2019 5 minutes ago, Randyh said: a 1,5 watt amp will NOT be sufficient to drive a Kappa15C - But its fine running a K-33 as you say right ? Explain why you think this. 2 Quote Link to comment Share on other sites More sharing options...
OO1 Posted November 30, 2019 Share Posted November 30, 2019 On 11/30/2019 at 12:36 PM, jason str said: But its fine running a K-33 as you say right ? Explain why you think this. On 11/30/2019 at 12:36 PM, jason str said: But its fine running a K- Quote Link to comment Share on other sites More sharing options...
jason str Posted November 30, 2019 Share Posted November 30, 2019 7 minutes ago, Randyh said: based on a K33 -EV 15WK woofer , yes -he should be ok -it was used in all Heritage series - I was referring to the Kappa 15 C and why you think it cannot be used with tube gear. Quote Link to comment Share on other sites More sharing options...
OO1 Posted November 30, 2019 Share Posted November 30, 2019 - Quote Link to comment Share on other sites More sharing options...
PrestonTom Posted November 30, 2019 Share Posted November 30, 2019 I think you guys have thoroughly confused the OP at this point. I suggest that whoever is interested go to Parts Express (they sell the Kappa) and also the Simply Speakers site (they sell the K-33) and look at the efficiency or sensitivity ratings for those two woofers. You will find the numbers (in dB) are roughly the same. The short answer is .... yes, if you think that a 1.5 watt amplifier is sufficient for the K-33 then it should also be adequate (in terms of supplying voltage) for the Kappa also. The finer grain answer would include comments about whether a 1.5 watt amplifier is sufficient given your listening habits, room size, distance from the speaker etc Good luck, -Tom 1 Quote Link to comment Share on other sites More sharing options...
jason str Posted November 30, 2019 Share Posted November 30, 2019 17 minutes ago, Randyh said: -Jason --my statement was not specific to tube amps -but to 1,5w amps as a limitation - Ok then why not a 1.5 watt amp of any type ? Just trying to get my head wrapped around your thought process. Quote Link to comment Share on other sites More sharing options...
jason str Posted November 30, 2019 Share Posted November 30, 2019 3 minutes ago, PrestonTom said: I think you guys have thoroughly confused the OP at this point. I suggest that whoever is interested go to Parts Express (they sell the Kappa) and also the Simply Speakers site (they sell the K-33) and look at the efficiency or sensitivity ratings for those two woofers. You will find the numbers (in dB) are roughly the same. The short answer is .... yes, if you think that a 1.5 watt amplifier is sufficient for the K-33 then it should also be adequate (in terms of supplying voltage) for the Kappa also. The finer grain answer would include comments about whether a 1.5 watt amplifier is sufficient given your listening habits, room size, distance from the speaker etc Good luck, -Tom Agree. 1 Quote Link to comment Share on other sites More sharing options...
Robbie010 Posted November 30, 2019 Author Share Posted November 30, 2019 Thanks all for the feedback on this thread, its great to see so many opinions and get advice from those in the know. I have now committed to using original Klipsch K-55V mid drivers, as one came up on eBay at a reasonable price, so I just need a second K-55V to go with it and ill have a pair!! 😃 That just leaves the woofers. I would love to go with original K33 drivers if they turn up at a reasonable price but have a feeling that may be a long shot. As for the amplifiers, I have Transcendent SE OTL 300B’s, which are rated at only 1.5watts but don’t seem to struggle driving my old Wharfedale speakers that are around 95db sensitivity, so I was hoping that the La Scala, all be it a clone, would work well...... Quote Link to comment Share on other sites More sharing options...
OO1 Posted December 1, 2019 Share Posted December 1, 2019 - Quote Link to comment Share on other sites More sharing options...
jason str Posted December 1, 2019 Share Posted December 1, 2019 19 hours ago, Robbie010 said: Thanks all for the feedback on this thread, its great to see so many opinions and get advice from those in the know. I have now committed to using original Klipsch K-55V mid drivers, as one came up on eBay at a reasonable price, so I just need a second K-55V to go with it and ill have a pair!! 😃 That just leaves the woofers. I would love to go with original K33 drivers if they turn up at a reasonable price but have a feeling that may be a long shot. As for the amplifiers, I have Transcendent SE OTL 300B’s, which are rated at only 1.5watts but don’t seem to struggle driving my old Wharfedale speakers that are around 95db sensitivity, so I was hoping that the La Scala, all be it a clone, would work well...... Any way you go keep in mind most if not all cast frame woofers will not fit in the cabinet without modification, just a bit too wide. Quote Link to comment Share on other sites More sharing options...
dirtmudd Posted December 3, 2019 Share Posted December 3, 2019 On 11/30/2019 at 4:57 AM, Full Range said: I have a set of pimped DIY La Scalas - originally built by another member and I finished the fine SQ details You probably won’t go to the extreme that this build has gone to but when done right - the SQ is heaven on earth They live with me in Australia Drivers used as as follows Woofers - Crites - CW1526C 15 inch cast alloy Mid Range - Great Plains Audio - GPA 399 Compression driver ( These are made authentic to Altec Lansing specs ) Fitted to a pair of Eliptrac 400 timber mid range horns Tweeters - JBL 2404H Baby Cheeks tweeters. Bass bin extension also fitted Crossovers used are custom Built - as per my build thread - https://community.klipsch.com/index.php?/topic/149952-a-crossover-design-on-single-exposed-board/ Please note that some components you see on the video have changed Klipschorn up to 90Hz, La Scala up to 320Hz, Sato-Horn up to 2000Hz, Renkus beginns at 2000Hz......... Woofer: Klipsch LA Scala with original K-33 woofer, cabinet-sides filled with sand (20hz-280Hz) mid: Small copy of a Wesern Electric 15A 70cm x 70cm with JBL 2420 (280Hz-3,2KHz) tweeter: FOSTEX FT65H (3,2KHz-20HKz) 2 Quote Link to comment Share on other sites More sharing options...
MechEngVic Posted December 4, 2019 Share Posted December 4, 2019 On 11/30/2019 at 1:57 AM, Full Range said: I have a set of pimped DIY La Scalas - originally built by another member and I finished the fine SQ details You probably won’t go to the extreme that this build has gone to but when done right - the SQ is heaven on earth They live with me in Australia Drivers used as as follows Woofers - Crites - CW1526C 15 inch cast alloy Mid Range - Great Plains Audio - GPA 399 Compression driver ( These are made authentic to Altec Lansing specs ) Fitted to a pair of Eliptrac 400 timber mid range horns Tweeters - JBL 2404H Baby Cheeks tweeters. Bass bin extension also fitted Crossovers used are custom Built - as per my build thread - https://community.klipsch.com/index.php?/topic/149952-a-crossover-design-on-single-exposed-board/ Please note that some components you see on the video have changed Oh man, those are the most gorgeous LS's I've seen so far! I love tall speakers and you made a short stocky speaker long and elegant. And the crossovers built through the board is fantastic. I bet those ported risers get you a few more Hz's. Do you get reflection/dispersion/diffraction issues with the tweeter? Quote Link to comment Share on other sites More sharing options...
Full Range Posted December 4, 2019 Share Posted December 4, 2019 2 hours ago, MechEngVic said: Oh man, those are the most gorgeous LS's I've seen so far! I love tall speakers and you made a short stocky speaker long and elegant. And the crossovers built through the board is fantastic. Thank you for the comment 2 hours ago, MechEngVic said: I bet those ported risers get you a few more Hz's. Do you get reflection/dispersion/diffraction issues with the tweeter? At first some trial and error was needed with countless listening tests until I got it just right for my listening room I haven’t actually measured the bass itself but have a graph of general (non scientific measurements) - but to my ears the bass would be in the mid to low 30 Htz range Blue line in the graph is bass 1 Quote Link to comment Share on other sites More sharing options...
Full Range Posted December 5, 2019 Share Posted December 5, 2019 21 hours ago, MechEngVic said: Do you get reflection/dispersion/diffraction issues with the tweeter? Sorry for not answering this question earlier I have a fully adjustable db settings for the tweeter and midrange on the crossover And the baby cheeks horn on the tweeter is beautiful Having said that I do swap over the tweeter to a Fostex FT50H super tweeter at times when the music is demanding and the adjustable db is good for fine adjustment 1 Quote Link to comment Share on other sites More sharing options...
Robbie010 Posted December 8, 2019 Author Share Posted December 8, 2019 Quick thread revival with an update..... and further questions. Amazingly, I have just managed to pick up a pair of Eminence Kappa 15C drivers for a bargain £60 and the bonus is that they are only 10 miles away from me! 😎 So, that means this project is now going ahead using the Eminence Kappa 15C Woofers, Klipsch K-77M Tweeters & Klipsch K-55V Mid drivers. Following guidance from various posters, I will be buying or possibly making the Type AA Crossovers. However, will there be any changes required to the stock AA network when using these drivers? Finally, that just leaves the horns. I can see on the crites site that there are two flavours, a 600hz and a 700hz..... why are there two different types and how do I go about selecting the correct one? As with everything else in this project, I would ideally like to purchase the horns locally to save on international shipping and import charges, so an alternative to the crites horn would be good. Thanks in advance! Quote Link to comment Share on other sites More sharing options...
jason str Posted December 8, 2019 Share Posted December 8, 2019 The stock AA crossover is fine. Those Kappa 15 C should have spacer installed under the gasket, if you look at the stock K-33 or the Crites replacement drivers they have double thick paper gaskets witch the Kappa 15 C does not. Router a spacer (1/4" or a bit thicker is fine if you have it laying around) as wide as the gasket. Quote Link to comment Share on other sites More sharing options...
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