rplace Posted March 24, 2018 Share Posted March 24, 2018 Always fun to try different ingredients in the soup. Would it be worth my time and effort to track down a pair of K55V mid drivers with Dual Phase Plugs? My Belle center has the push type and obviously my 87 Khorns have the flatter silver ones, not the rounded gray ones....I can't keep em all straight. So just so I know should I give it a go. Or save my time, money and effort and just buy more music and spend my time listening. Kicking myself for not seeing the Oris horns for sale close to me. That would have been a totally different endeavor. DPP K-55 are a pretty easy swap. On the other hand I'm not unhappy with my current set up 87 Khorns, Dean AA XOs and Crites tweeters. Still have original tweets so could go back at any time. Quote Link to comment Share on other sites More sharing options...
jimjimbo Posted March 24, 2018 Share Posted March 24, 2018 Always fun to try different ingredients in the soup. Would it be worth my time and effort to track down a pair of K55V mid drivers with Dual Phase Plugs? My Belle center has the push type and obviously my 87 Khorns have the flatter silver ones, not the rounded gray ones....I can't keep em all straight. So just so I know should I give it a go. Or save my time, money and effort and just buy more music and spend my time listening. Kicking myself for not seeing the Oris horns for sale close to me. That would have been a totally different endeavor. DPP K-55 are a pretty easy swap. On the other hand I'm not unhappy with my current set up 87 Khorns, Dean AA XOs and Crites tweeters. Still have original tweets so could go back at any time.I have a pair of dual phase plug mids if you are interested. Quote Link to comment Share on other sites More sharing options...
Frzninvt Posted March 24, 2018 Share Posted March 24, 2018 The K-55M's in your '87's are a dual phase plug design and actually run about 1.5db hotter than a standard K-55V. The drawback being is there are no replacement diaphragm's for them you have to modify a K-55V one to work in it. The K-55V's also have alnico magnets. Quote Link to comment Share on other sites More sharing options...
rplace Posted March 24, 2018 Author Share Posted March 24, 2018 7 minutes ago, jimjimbo said: I have a pair of dual phase plug mids if you are interested. PM back. Long winded. I now have options. Keep close to your vest please. 1 Quote Link to comment Share on other sites More sharing options...
rplace Posted March 24, 2018 Author Share Posted March 24, 2018 Just now, Frzninvt said: The K-55M's in your '87's are a dual phase plug design and actually run about 1.5db hotter than a standard K-55V. The drawback being is there are no replacement diaphragm's for them you have to modify a K-55V one to work in it. The K-55V's also have alnico magnets. Thanks for that info. I'm much more a listener, than a tech guy. Not sure if you remember way back in 2004 or so but you are actually the one that alerted me to the Khorns in my area. Met GaryMD the day I picked up. I have you to blame for all that has happened since. I was perfectly happy with my FIIs then. So what could/should I expect sonically? Why the lust for the DPP solder terminals? Is the only downside to my Ms the diaphragm? I don't envision my killing mine. Should I just wait for that day to happen and consider modded diaphragms vs DPP K55Vs then? Quote Link to comment Share on other sites More sharing options...
Frzninvt Posted March 24, 2018 Share Posted March 24, 2018 My thought is with 1.5db less output going from the M to V version I would just stick with the M version personally. Nothing to really gain switching to the solder terminal K-55V's. If anything you may consider the newly developed A-55G's that were created and designed by a forum member. I hear alot of positive comments on them although they are not cheap @ $400/pr and I am not sure if the output is the same as the K-55M's though. Yes I do remember that glad I could help out. I used to have feelers out all over for all things Klipsch. Quote Link to comment Share on other sites More sharing options...
rplace Posted March 24, 2018 Author Share Posted March 24, 2018 Interesting...wonder why in my mind I had it that the small window, 80-82 maybe, that the DPP solder terminals were "the" mid driver to have. Like I said in original post I'm not unhappy with mine, but then again always fun to experiment. Perhaps it is the scarcity of them that fuels the thought that better. Quote Link to comment Share on other sites More sharing options...
Frzninvt Posted March 24, 2018 Share Posted March 24, 2018 That is correct the solder terminal dual phase plug K-55V was only used in the '80-'82 time frame. All things said I run the solder terminal K-55V's in seven of my nine Heritage HT speakers. Quote Link to comment Share on other sites More sharing options...
JohnA Posted March 24, 2018 Share Posted March 24, 2018 Your best option would be to change the Belle Klipsch center to match your flanking K-horns. K-55-Ms are available used and are durable in home use. You should not need to be concerned about replacing diaphragms in your lifetime. Sad that real replacements are no longer available, but it is telling that the -V diaphragm can be modified to fit. Quote Link to comment Share on other sites More sharing options...
garyrc Posted March 24, 2018 Share Posted March 24, 2018 5 hours ago, Frzninvt said: That is correct the solder terminal dual phase plug K-55V was only used in the '80-'82 time frame. All things said I run the solder terminal K-55V's in seven of my nine Heritage HT speakers. I thought the new phase plug was introduced in '80 to address a longstanding dip in response near the top of the K55's range (as used in the Khorn). Was this made unnecessary by the later reducing of the crossover frequency to the K77 from 6K to 4.5K, and the steepening of the slope? 1 Quote Link to comment Share on other sites More sharing options...
Deang Posted March 24, 2018 Share Posted March 24, 2018 Yes, the newer filter designs probably don’t benefit from the dual phase plug variants. However, many of us prefer the sound with earlier filters. 1 Quote Link to comment Share on other sites More sharing options...
Deang Posted March 24, 2018 Share Posted March 24, 2018 4 hours ago, JohnA said: Your best option would be to change the Belle Klipsch center to match your flanking K-horns. K-55-Ms are available used and are durable in home use. You should not need to be concerned about replacing diaphragms in your lifetime. Sad that real replacements are no longer available, but it is telling that the -V diaphragm can be modified to fit. Recent experience has shown me that replacing 30 year old diaphragms is beneficial - honest. Quote Link to comment Share on other sites More sharing options...
rplace Posted March 24, 2018 Author Share Posted March 24, 2018 Make it easy for me @Deang I'm slow. With the networks you built for me and my stock 87 horns/drivers should I persue solder terminal DPP drivers and new diaphragms? Quote Link to comment Share on other sites More sharing options...
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