mboxler Posted October 31, 2020 Share Posted October 31, 2020 I'm playing around with extreme slope crossovers in one of my Heresy I's, and noticed a large dip in the frequency plot around 1600 Hz. I just received a DATS V3 box, and ran a test on the K-52-H/K700. What the heck is going on between 1Khz and 2Khz? Would this cause the dip on the plot? Thanks, Mike Quote Link to comment Share on other sites More sharing options...
Alexander Posted October 31, 2020 Share Posted October 31, 2020 Looks a lot like the stock k-52-h drivers from my klf-30's. So nothing to worry about. Quote Link to comment Share on other sites More sharing options...
mboxler Posted November 1, 2020 Author Share Posted November 1, 2020 On 10/31/2020 at 2:54 PM, Alexander said: Looks a lot like the stock k-52-h drivers from my klf-30's. So nothing to worry about. Thanks! Today I ran the same test on the other K-52-H, and got more symmetric plot. I'll assume all is okay. Mike Quote Link to comment Share on other sites More sharing options...
OO1 Posted November 1, 2020 Share Posted November 1, 2020 how do these k-52H sound with the extreme slope crossovers ? - Quote Link to comment Share on other sites More sharing options...
mboxler Posted November 2, 2020 Author Share Posted November 2, 2020 39 minutes ago, RandyH000 said: how do these k-52H sound with the extreme slope crossovers ? - Right now I'm using ES5800T crossovers from ALK to see what a "professional" plot would look like. I can only attenuate the squawker, so I adjusted it to get to the CT-125 level. If I had a tweeter attenuator, I could actually listen to the speaker. The crossover I'm designing will allow variable attenuation of both the squawker and tweeter to get them both down to the Heresy's woofer level. Mike Quote Link to comment Share on other sites More sharing options...
OO1 Posted November 2, 2020 Share Posted November 2, 2020 1 hour ago, mboxler said: Right now I'm using ES5800T crossovers from ALK to see what a "professional" plot would look like. I can only attenuate the squawker, so I adjusted it to get to the CT-125 level. If I had a tweeter attenuator, I could actually listen to the speaker. The crossover I'm designing will allow variable attenuation of both the squawker and tweeter to get them both down to the Heresy's woofer level. Mike cool , did you ever consider using an L PAD - Quote Link to comment Share on other sites More sharing options...
mboxler Posted November 2, 2020 Author Share Posted November 2, 2020 2 minutes ago, RandyH000 said: cool , did you ever consider using an L PAD - That may be my best option. My idea requires the squawker low pass AND the tweeter high pass components to be AFTER the autoformer. The weird impedance of the K-52-H may make that difficult. Learning a lot about elliptical filter design though 🙂. Quote Link to comment Share on other sites More sharing options...
jason.justice Posted June 3, 2022 Share Posted June 3, 2022 Does anyone know the impedance rating for the k-55h? I’d like to test mine to confirm they are within spec. Quote Link to comment Share on other sites More sharing options...
M.Att Posted June 3, 2022 Share Posted June 3, 2022 On 11/1/2020 at 6:49 PM, mboxler said: Thanks! Today I ran the same test on the other K-52-H, and got more symmetric plot. I'll assume all is okay. Mike Hi Mike, I had a similar plot w/ K-80s and it corrected when I replaced the ferrofluid. Your's seems to have autocorrect turned on though. Quote Link to comment Share on other sites More sharing options...
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