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StabMe

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  1. I discovered that JLH amp realization can be bought here at an affordable price. Small local company produces them here. I can be sure that it is made of quality parts and indeed pure Class A. With Chinese versions this is a lottery. I remember Chris was writing about appropriate type of amps for horns, but it is too complicated for me to understand if JLH fits the requirement.
  2. BTW, can anyone comment on an idea of using JLH amp for HF? There a few versions of this 10W per channel amp available at Chinese stores that can be bought relatively cheap and have good reviews. For the LF i will be buying something separate. Shooting for about 100W per channel. Or will i need more power to be able to boost some lows as well?
  3. I decided to share 3D files i used with the community. If this helps the community as a whole or any person here individually, i am very glad that i can pay back just this little. Files are available at this link. Most of the info (even file names) are in Russian. But the text part of the instructions are somewhat redundant and nobody really going to have problems understanding which parts goes where. And even then there is Google Translate which can handle the text, i believe. Oh, and I am here and can help with translation as well.
  4. Hey! The project is moving, albeit somewhat slowly. The guy at the carpentry is now gluing the parts together. Brought loudspeakers to him yesterday so that he can he if they fit nicely and do amendments if necessary. Some pics:
  5. That is a lot of info to digest Very educational. Thank you, Chris.
  6. Well, you are probably correcting direct speaker response as opposed to a mix of direct and reflected sound. If not, then I am one of those who couldn't and wouldn't tell
  7. After seeing a few builds with detachable second flare, i was contemplating on the idea of making mine like this, but then i decided to make it full range and used double 15", which kinda made the detachable flare impossible. You didn't document this one on the forum, did you? Found your older threads, but not one on this buid. I will first try it without the sub. If I feel that the sub is needed, i will make two of them based on the Kicker driver I have (mentioned earlier in this thread) and will cross them at around 30-40Hz. They are monstrous BTW, Chris, what slope do you use on your subs? LR24?
  8. Well, what's left is the speaker itself. So by measuring from 1m distance we are correcting speakers, not the speaker-room interaction? Or, even while the mic is placed 1m from the speaker, we still have the room effects, only we see less of the room in the measurements. My understanding.
  9. Chris, this is great information and i will definitely use that approach when the time comes and compare the result with correction over the listening position. Lately i've been using a movic mic measurement technique with REW which gave me nice results. It is gonna be very interesting to A/B the results. There is also an old ConEq software and newer software called APL by the same guy who was the main developer behind ConEq. This software also uses a nearfield measurements, although they take about 80-300 measurements per time by playing and recording short sweeps: But when measuring the reverberation and effect of room treatments, do we really need to take the room out? Isn't the room and its behavior in fact what ought to measure? This part is confusing.
  10. @ChrisA, what is the reason for measuring at 1m from the speaker as opposed to at the listening position? Intuitively i would assume that what matter is what's happening at where my ears at.
  11. Will deal with absorption iteratively. Those graphs look great Chris.
  12. BTW, This is how my listening place will look like with speakers installed: Do those windows pose a real problem as far as corner loading goes? Maybe some other problems? Any obvious places to add room treatments?
  13. Thanks! Will definitely share those along with measurements i will be able to take. Correct, the ratio is about 1/10th - as per Chris' experience and recommendation. My plan is to run mids up to about 450-500 or somewhere in the middle. Will decide upon measurements. I like your build! Looks impressive. So you've made curved parts out of XPS, covered them with fiberglass and epoxied them as to make them sturdier and put them inside of the box? Or is curved flare detachable? Those almost fridge sized boxed below speakers - are those subwoofers? There is a guy over at DIYAudio who made a few Synergy builds, who likes to cross them at 100Hz, likes single injection port per driver and likes them not to be offset. Is it you by chance? Can't remember the nickname at that forum.
  14. Sadly I am not a superhuman, so I will go ahead and start designing the SUB for this system. Here is how it looks in SketchUp.
  15. Yeah, those two build were quite inspirational for me so I couldn't resist the temptation and started tinkering with SketchUp which lead to building a pair. I don't mind sharing the plans with the community. There are a few errors in the drawings, I will fix them and then share the whole package. I got so much info from this forum, I hope those plans and drawings bring at least some value. That is good to hear! A question - since MEH will require some boost at the lower end to reach 20Hz and lower, is there a risk or increased distortion? Maybe that would be a good reason to build a pair of tapped horns? I am working on a plan of TH design that reaches to about 20Hz with a flat curve based on a Kicker L7 12" car subwoofer that i have laying around: Although, group delay seems a bit high:
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