A Klipsch Heresy III-IV inspired diy project

Hello, I'm looking for a diy project inspired to the popular Klipsch Heresy III or IV loudspeakers, of which I like dynamic capabilities, similarity to live sound and a kind of mid-range punch never heard before. What I don't like is uncertainty about time-alignment between mid-range and tweeter and the quality of woofers, components and cabinets.
I would be really grateful to anyone who could direct me to a similar project on which I could apply checks and customizations.
Thank you very much.
 
- although not a "kit" there 's plenty of info on building a "Super Heresy" (1&2) . (That size could lend itself to 6th order reflex operation with suitable woofer if desired)

Read these linked threads:

https://community.klipsch.com/index.php?/topic/150280-super-heresy-1-baby-cornwalls-mod/

https://audiokarma.org/forums/index.php?threads/super-heresy-version-3-0.1012758/

An inexpensive midrange driver suggestion - you would have to find a 2" format small waveguide/horn

https://prvaudio.com/products/d2200ph/
 
  • Like
Reactions: 1 user
Check out Crites speakers, and Pi speakers.
..cut...
https://critesspeakers.com/products...2-raw-birch-pair-free-continental-us-shipping

Closest that I've seen to a Heresy. Glenn.
Many thanks, I didn't know at all those.I'll try to ask them if it's possible to buy only schematics, cabinet plans and measurements to be able to buy components locally, try to customize something and measure in comparison, as a good learning method, also given the transcontinental locations for me and prohibitive cost of shipping kit.
 
I don’t know your budget or how picky you are on sound quality. I’ve been working on some heresy inspired stuff for some years now. They are still not complete. As it turned out I had some luck with two way during my testing. The fane pro drivers with eminence tweeters works very good with the eminence 2,5cx crossover. I’m still playing around with various combinations it’s a long story starting with coaxials. My best advise at this point is to add a decimeter depth as you gain 20l (+50%) which makes deep bass a lot easier. You can read more here:

https://www.diyaudio.com/community/...eded-on-midrange-options.382116/#post-7010945

https://www.diyaudio.com/community/threads/more-edits-to-my-retro-12-heresy-coaxial-quest.399096/


IMG_7349.jpeg
 
Last edited:
In Crites site there's written that 'These are complete speakers or speaker kits that you can order directly'
Pi speakers too is available as kit.
Yes, aware of Pi's kits, but couldn't find any Crite's speaker kit reference at the posted link or in their 'complete' catalog listings, but just now see the speaker listings page is loading on my laptop down below its header where the note is. :headbash: :cuss:
 
I don’t know your budget or how picky you are on sound quality. I’ve been working on some heresy inspired stuff for some years now.
...cut...
Hello, thank you very much for your sharing and suggestions. One curiosity, why did you ask me about my demand of sound quality? Aren't you completely satisfied from this point of view? I'm 'insane' of course about need of sound quality! I Naturally I look for dynamism, realism, impact, and airiness, microdetail, three-dimensionality etc. etc. at the same time..:)
 
I ask because in your original post you emphasized spectacular midrange which is something I have yet succeeded in my builds so far. My speakers are very dynamic but they have a bumpy response. With my instrumental music preferences I don’t mind that much, to me the PA experience is of more importance and I’m rather satisfied running these in 2-way config. I still do lots of mods though gaining some experience before I try to build a better one these are prototypes.
 
I ask because in your original post you emphasized spectacular midrange which is something I have yet succeeded in my builds so far. My speakers are very dynamic but they have a bumpy response. With my instrumental music preferences I don’t mind that much, to me the PA experience is of more importance and I’m rather satisfied running these in 2-way config. I still do lots of mods though gaining some experience before I try to build a better one these are prototypes.
Excuse me for the late. Irregularity is welcome for me! Since I am madly in love with voices, trumpets, cymbals, guitars, in my projects I have always tried to get the best in the midrange with 3 or 2-way projects, looking for a deliberately inflated response in that area, but unfortunately obtaining only harshness and above all unsustainable sibilance problems. But the biggest problem is that the sibilance remained even when I worked on 'graphically' flat answers and with temporally aligned crossings, something for which I seriously risked madness and which together with the birth of my children led me to abandon everything for lack the large amount of time required.
What struck me about the Heresy III is precisely this 'presence', incisiveness and 'punch' in the mid range, at times almost a really pleasant 'annoyance' sensation, which made me stay glued to the sofa, I don't know if you can speak of irregularities, certainly of a skill in handling the sound theme.
 
Based on that I dont think you will be happy with the current state of my builds, you probably want a more dedicated mid horn of some sort and a variable lpad for adjusting said presence. You are welcome to be inspired in any case but as I’ve said I’m not successing the mids just yet. It is however on the agenda to do so. Good luck and please post about your project, pics and what not.
 
Here is my interpretation of a Heresy as a compact ported tower done with budget friendly drivers. By compact I mean 1" less deep and 3" narrower than a Forte. I call them "Faux Pas"

I designed them without baffle step correction so their intended placement is close to the back wall. This keeps efficiency up and makes them a little easier to live with in smaller spaces. A potential issue of cloning this is the specific part number midrange CD I used is discontinued, but I suspect it is the same CD used in another part number that is still available, just comes with a different horn (I didn't use the horn it came with anyway).

The below response graph (+THD) is in-room, but a few feet away from the wall. You can see baffle step dropping output, but then room gain starts bringing it back up again. That dip should flatten out more as the speaker is pushed closer to the back wall.




An informal play-by-play build log:
https://techtalk.parts-express.com/forum/speaker-project-gallery/1490675-faux-pas

More compact info on the build:
https://diy.midwestaudio.club/discussion/2107/klipsch-style-tower-project-on-the-cheap
 
Last edited:
  • Like
Reactions: 1 users
Here is my interpretation of a Heresy as a compact ported tower done with budget friendly drivers. By compact I mean 1" less deep and 3" narrower than a Forte. I call them "Faux Pas"
I sincerely apologize for the late response, congratulations on the idea, the work, the result and thank you so much for sharing it, it's too interesting as path to follow for those who love to experiment and listen well. The only thing I feel I can advise you is to try a slightly 'better' woofer, it may be that some weakness in the medium-low register found in certain situations may depend on that. I hope to be able to share a similar experience one day. Thanks again.
 
If I would have added baffle step compensation then it would have a response more normal when away from a wall. But then I would have had to attenuate the mid and tweeter more, which would have likely ended up needing to redesign all the crossovers again as they were very sensitive to impedance/resistance changes. And after all the headache it took getting them to where they are now... I wasn't up for going further.