He has finally figured out WAW. Not the best driver arrangement, and the XO is kinda high for the centre-to-centre.
But it sounds like they work well.
He doesn’t really understand bipoles. Rear-firing tweeter, not a bipole. Omni above the bafflestep. Definitly some stuff that he doesn’t;t understand yet. Bafflegab.
dave
But it sounds like they work well.
He doesn’t really understand bipoles. Rear-firing tweeter, not a bipole. Omni above the bafflestep. Definitly some stuff that he doesn’t;t understand yet. Bafflegab.
dave
Not dissimilar to what Colin and I did 10 years ago (and were reviewed in HiFi World). I can't comment on the GR, but speaking more generally the layout does work better than many would believe, even crossed rather higher.
I'm completely knackered right now (increasingly normal state. All I'm good for is the glue factory
) but on a quick skim, looks reasonable with some caveats -I don't much like that very high impedance load on the LF for starters: I've been there with the original prototype Viotti Towers in particular, and they didn't last long in that configuration. 😉
I'm completely knackered right now (increasingly normal state. All I'm good for is the glue factory
) but on a quick skim, looks reasonable with some caveats -I don't much like that very high impedance load on the LF for starters: I've been there with the original prototype Viotti Towers in particular, and they didn't last long in that configuration. 😉If DR knew as much as he thinks he knows then he’d be a great speaker designer . . . .
I do not know DR from Adam, but I will say this. The man practices what he preaches. That's a hell of a lot more than I can say for some others here. Also, the man supports DIY. Is that not what this forum is all about? Great speaker designer? I can damn sure tell you he is better than I, and besides, he is my neighbor. (In Texas, anyone within a five hundred mile radius is one's neighbor.) Expertise is highly undervalued in our times. It seems that most folks operate from a base of faith, or belief. The man lives by measurements. One might believe whatever the hell he wants to believe, but if he wants to prove the existence of GOD he should damn well offer up the evidence. When I examine his open baffle subs though, I know instinctively that they pair well with Magnepans. I am no rocket scientist, but let me tell you boys-this **** ain't rocket science. If any of you know your audiophile speaker history you will know that oftentimes the lowest offering in a company's range performs embarrassingly near the top of the line. Therein lies a challenge any talented designer aspires to-to make the most with the least. The converse strikes me as lazy in comparison. I jump to no man's defense, but I think the man is doing a fine job. Now-show me what you got, big boy.
This do (given chronic-insomnia and 0200 BST on my laptop)? 😉
From top left:
MCRU 165; MCRU 127 (not visible in these pictures, but these had a rear-firing tweeter in addition to the forward-firing); Edingdale GT; Edingdale MkII; Edingdale MkI; Edingdale SR; Jenna & Rossendale (side-by-side); Norge, Viotti Tower. First two designed & built as OEMs for MCRU by myself & my cabinet-building partner in crime Colin, the Edingdales, Jenna, Rossendale & Norge for our own (now retired) Revier Acoustics brand, Viotti Tower designed for / with MA-Sota.
From top left:
MCRU 165; MCRU 127 (not visible in these pictures, but these had a rear-firing tweeter in addition to the forward-firing); Edingdale GT; Edingdale MkII; Edingdale MkI; Edingdale SR; Jenna & Rossendale (side-by-side); Norge, Viotti Tower. First two designed & built as OEMs for MCRU by myself & my cabinet-building partner in crime Colin, the Edingdales, Jenna, Rossendale & Norge for our own (now retired) Revier Acoustics brand, Viotti Tower designed for / with MA-Sota.
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Nice! You should extend that to your oratory and not dog a brother down. This is not a p*****g contest. That being said I am a planar man. That is not to say I do not recognize those certain advantages of dynamic drivers-merely my personal preference. Please PM me any info on the speakers you sell for a living. Thanks in advance.
You asked: you received. Interesting that when you got exactly what you asked for, you suddenly announce it is a '******* contest'. 😉
Reality check. If you read it again, you might notice that my post was actually supporting the basic concept of those speakers. I simply made a mild critique (which is not a synonym for 'abuse') about the LF impedance load shown in the video. If that is 'dog[ging] a brother down' we must be setting a record for what is now classed as insults.
I'm afraid it's not possible to PM you info on speakers I sell for a living, because I don't actually sell speakers for a living. 😉 As noted above, all of those shown were produced by companies long-since wound down.
Reality check. If you read it again, you might notice that my post was actually supporting the basic concept of those speakers. I simply made a mild critique (which is not a synonym for 'abuse') about the LF impedance load shown in the video. If that is 'dog[ging] a brother down' we must be setting a record for what is now classed as insults.
I'm afraid it's not possible to PM you info on speakers I sell for a living, because I don't actually sell speakers for a living. 😉 As noted above, all of those shown were produced by companies long-since wound down.
Reality check. If you read it again, you might notice that my post was actually supporting the basic concept of those speakers. I simply made a mild critique (which is not a synonym for 'abuse') about the LF impedance load shown in the video. If that is 'dog[ging] a brother down' we must be setting a record for what is now classed as insults.
I caught that myself Scottmoose. I thought I was corresponding with one Studley. My apologies for the confusion. I can become quite offput by the dismissive nature of some of the comments I read here, prompting my own mouth to outrun my own brain. It's 3AM here. This woke me. I do not like to **** up, and when I do I try to correct it. Again, My apologies.
Narry a problem. 🙂 As a chronic insomniac I can sympathise -half of what I write is in the small hours, when I'm definitely not at my best! 
@Toolermike; Mr Ritchie holds himself out as someone who knows pretty much all there is to know about speaker and crossover design - it’s implicit in everything he puts out into the public domain. For a while I was taken in by this but over time I picked up on various clues that clearly indicated that he isn’t quite the authority that he seems to think he is. If you want an example of just one such clue, search out his YouTube vid where he references Don Keele’s CBT. He dismisses the design out of hand and says it simply can‘t work as a line array, or words to that effect. It is perfectly obvious that he has zero understanding of the technical theory behind the CBT. In fact it wouldn’t surprise me if he has never even heard of Don Keele.
I can reasonably assert that I am an expert (albeit in an entirely unrelated field) and as such I have always been acutely aware of how important it is to be aware of your own limitations. IMHO Mr Ritchie is a classic example of someone who knows just enough to be “dangerous” and that is what prompted my, admittedly somewhat snidey, comment.
I can reasonably assert that I am an expert (albeit in an entirely unrelated field) and as such I have always been acutely aware of how important it is to be aware of your own limitations. IMHO Mr Ritchie is a classic example of someone who knows just enough to be “dangerous” and that is what prompted my, admittedly somewhat snidey, comment.
Can you explain it?
https://gr-research.com/product/lgk-woofer/
https://gr-research.com/product/mini-woofer/
No graphs, data... 🙁
LGK 2.4
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It is obviously not a bipole, he got the wrong term. The important thing is to judge by the result.
From this small speaker we know that it is only capable of handling little power, more now because it works > 350 Hz. It would be interesting to know the distortion graphs (and harmonics, if the 2nd order predominates or the 3rd order) of the speakers and the final result, which few advertise.
An example, Sonus Faber Lumina II (bookshelfs)
https://alpha-audio.net/review/triple-test-bookshelf-speakers-1000-euro-sonus-faber-focal-elac/4/
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Not really. In the video I found demonstrating comb cancellation HF drop in full range line arrays it appears more accurate to say he saw the full range Epique kit on Parts Express and from his own experience as a line array designer unfairly dismissed it without investigation. He explicitly mistook the curvature as a method of spreading and preventing cancellation of highs. The lack of operating principle details on the Parts Express page probably didn't help. Hasty rush to judgement is fair, inept and arrogant isn't. Ironically a Sound and Vision review of the Epique as sold without equalization rolls off at the top end pretty much as Ritchie predicts in his video.
Ritchie and to some degree McGowan are interesting industry phenomena, targeted with a single's group's animus over other designers for no obvious reason. Perhaps his videos make him the proverbial gopher that popped his head up. The constant slagging IMO is more TikTok than tech.
@Studley As an aerospace toolmaker I know a bit about cutting-edge composites, but I certainly do not consider myself an expert on them. In fact, my expertise is limited to eating and the taking a good ol' country *. My knowledge of loudspeakers pales in comparison with DR's. I appreciate his videos for their factual and measurement-based nature. It is indeed human nature to revert to opinion sometimes though. I have not seen the video you cite, but based on his experience I might assume he had actually tried it or perhaps observed it in operation. I know I have listened to audio components that were hailed as the best thing since sliced bread and walked away befuddled. I have also listened to equipment from back-burner operations that floored me-that actually sounded like all of the superlatives used to describe the stratospherically-priced stuff across the way. (Gotta' give a shoutout to Frank Alstine here.) I digress though. I appreciate DR for his non-denominational, all-inclusive sermons. Where a lot of folks in so-called high end audio shops might smirk at my backwoods accent, DR seems to want to lift up us all. Kinda' makes me feel like less of a dumb. Secondly, his product is what I would consider attainable. I am poor but I'm damn sure not proud of it. DR supports me in this respect because he also supports DIY. Thirdly, as mentioned above, he is my neighbor. We are cut from the same cloth, just as you might be akin to your British neighbors. I understand this and can weather the occasional regional jab. Hell, I thought PRAT was merely a smoke screen until I actually heard it. To think that electronic circuitry can actually affect a recording this way baffles me to this day. I will close with this. Studley, I am from East Texas. Our first cousin is Appalachia. Confusion is defined as Father's Day in East Texas! Hell, I am probably the only person you have ever enountered who has a pet cockroach. (It gets a bit lonely around here sometimes.) In my sphere my opinions are poorly received, but my intelligence is rarely questioned. When it is, I can get a little butthurt. We are good though-"Welcome back y'all!"
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The problem with the 3" LGK is... the high distortion < 500 Hz. A priori, cutting at 350 Hz is too low for that driver. And the distortion grows after too 🙁
Yes, bad choice.
The point is that with other all-band speakers we do not know the distortion graph.
https://www.audiosciencereview.com/...research-lgk-2-0-speaker-review-a-joke.34783/
Yes, bad choice.
The point is that with other all-band speakers we do not know the distortion graph.
https://www.audiosciencereview.com/...research-lgk-2-0-speaker-review-a-joke.34783/
Danny does not have the academic background, it is obvious, but he is not the only one. Very few have studied subjects like Electroacoustics, signal processing... you know.
It's around -5 dB by 500 Hz. Granted not a rock monitor but not ASR level bad.
I'm fixin' to pick up Danny and we are gonna' catch a flight out of DFW to Spain, look you up and whoop yo' ***! (It's a joke admin)