mikebse2a3 Posted September 20, 2014 Share Posted September 20, 2014 This is Roy's first passive crossover design for the KPT-KHJ-LF with K402/K69-A HF and the Input Impedance of the system. 2 Quote Link to comment Share on other sites More sharing options...
mikebse2a3 Posted September 20, 2014 Author Share Posted September 20, 2014 (edited) This is the Conjugate Circuits that can be added to the Input of the first passive crossover design for impedance compensation if desired. The plot is the Input Impedance of the System after adding these circuits to the original first passive crossover. Note: The benefits of adding this circuit to the original first passive crossover design is a smoother and more accurate frequency response when the loudspeaker system is driven by low damping factor amplifiers (such as single ended tube amplifiers) but for other amplifiers with higher damping factors there will probably be very little if any benefit to adding this modification to the first passive design by Roy. Edited September 23, 2014 by mikebse2a3 Quote Link to comment Share on other sites More sharing options...
mikebse2a3 Posted September 20, 2014 Author Share Posted September 20, 2014 (edited) This is the second passive design by Roy for the KPT-KHJ-LF with K402/K69-A HF v2 version Impedance Plot will be added if I can locate it. Roy said this design makes the frequency response smoother and boost the top end up a bit to give a closer match to the active settings. Edited September 20, 2014 by mikebse2a3 Quote Link to comment Share on other sites More sharing options...
mikebse2a3 Posted September 20, 2014 Author Share Posted September 20, 2014 (edited) This is Roy's Passive Design for the KPT-KHJ-LF with K402/TAD TD4002 and the System Impedance Plot Note this design has conjugate circuits included for frequency and impedance compensation. If impedance is determined to dip to low in the 100hz to 150hz region for some amplifiers a conjugate that affects that region can be removed if desired to lessen the dip in impedance. Edited September 23, 2014 by mikebse2a3 Quote Link to comment Share on other sites More sharing options...
Daddy Dee Posted September 22, 2014 Share Posted September 22, 2014 Thanks Mike. man, do i ever with i was putting these crossovers to work! Quote Link to comment Share on other sites More sharing options...
Turbox Posted September 23, 2014 Share Posted September 23, 2014 Many thanks for posting...saved. Quote Link to comment Share on other sites More sharing options...
IndyKlipschFan Posted January 17, 2020 Share Posted January 17, 2020 I have a honest maybe stupid? Why not take the KPT-KHJ-LF with K402/Whatever the top driver is now, and clip off the tweeter run off make sure the mid can also take or deliver the tweeter function in the 402 and sell this as a passive alternative with Roy’s magic I the network? It seems to me there is already a network in place and we are re inventing the wheel here Quote Link to comment Share on other sites More sharing options...
Deang Posted January 18, 2020 Share Posted January 18, 2020 Amazing. I have no idea what you are suggesting. 1 Quote Link to comment Share on other sites More sharing options...
Schu Posted January 18, 2020 Share Posted January 18, 2020 16 hours ago, IndyKlipschFan said: I have a honest maybe stupid? My new favorite post! Quote Link to comment Share on other sites More sharing options...
OO1 Posted January 18, 2020 Share Posted January 18, 2020 - Quote Link to comment Share on other sites More sharing options...
glens Posted January 18, 2020 Share Posted January 18, 2020 1 hour ago, Schu said: 17 hours ago, IndyKlipschFan said: I have a honest maybe stupid? My new favorite post! I understood it as "I have a[n] honest maybe stupid question" Quote Link to comment Share on other sites More sharing options...
Schu Posted January 18, 2020 Share Posted January 18, 2020 Ah... its STEEL ma favoret " Quote Link to comment Share on other sites More sharing options...
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