Chrisb:
The Brynn is a BVR - yes? If so how do you get around the FE126's limited Xmax (advertised as 0.35 mm by Fostex) in a bass reflex cab? When I try to model this driver in the Fostex recommended BR (or a MLTL or TL) the Xmax is exceeded at freqs below 100Hz at only 1w of input. Could the Brynn be modified to turn the large box into a small compression chamber and the "vent" into a longer linear horn? That way the FE126 could be better controlled at low frequencies.
The Brynn is a BVR - yes? If so how do you get around the FE126's limited Xmax (advertised as 0.35 mm by Fostex) in a bass reflex cab? When I try to model this driver in the Fostex recommended BR (or a MLTL or TL) the Xmax is exceeded at freqs below 100Hz at only 1w of input. Could the Brynn be modified to turn the large box into a small compression chamber and the "vent" into a longer linear horn? That way the FE126 could be better controlled at low frequencies.
Ultra Fi Times "products":
http://web.mac.com/ultrafitimes/ultrafitimes/Double_Horn.html
http://web.mac.com/ultrafitimes/ultrafitimes/Single_BVR.html
Too bad he doesn't give any credit to where he got the designs. I do know it says on the frugal horn site that these designs are open for people to make for profit, but you could at least give credit where credit is due...
http://web.mac.com/ultrafitimes/ultrafitimes/Double_Horn.html
http://web.mac.com/ultrafitimes/ultrafitimes/Single_BVR.html
Too bad he doesn't give any credit to where he got the designs. I do know it says on the frugal horn site that these designs are open for people to make for profit, but you could at least give credit where credit is due...
Well, it's nice to see that my cabinets (& Dave's CAD plans of them) are apparantly well-regarded & been used to good effect. It's quite flattering actually. Especially when they think one of them is worth $6,500pr.
They are open source designs, but there are some stipulations we make. Firstly, that at least a link back to the frugal-horn site and reference / credit (or should that be 'blame?') is given to the people who actually designed the cabinets. A donation is not required, but a nice gesture too. I wouldn't say no to a free pair of the double horns for example (though that's a trifle optimistic).
The other stipulation is that in the case of all my cabinets, & the Metronomes (the others I'm not sure about -Dave?), a commercial license of Martin King's MathCad software is needed for commercial production, even if it's not used by the manufacturer, as this was what was used by me in the design process. Unfortunately, these points haven't been made very clear on the site as yet, so partly our fault. Even so. it would have been nice to know that they were going to make some & to get some feedback on the cabinets, which is what it's all about. First I've heard of it. Thanks for the heads up George.
Especially when they think one of them is worth $6,500pr.They are open source designs, but there are some stipulations we make. Firstly, that at least a link back to the frugal-horn site and reference / credit (or should that be 'blame?') is given to the people who actually designed the cabinets. A donation is not required, but a nice gesture too. I wouldn't say no to a free pair of the double horns for example (though that's a trifle optimistic).
The other stipulation is that in the case of all my cabinets, & the Metronomes (the others I'm not sure about -Dave?), a commercial license of Martin King's MathCad software is needed for commercial production, even if it's not used by the manufacturer, as this was what was used by me in the design process. Unfortunately, these points haven't been made very clear on the site as yet, so partly our fault. Even so. it would have been nice to know that they were going to make some & to get some feedback on the cabinets, which is what it's all about. First I've heard of it. Thanks for the heads up George.
holdent said:
I can see that Scott has already addressed this in part, and he's certainly better qualified to answer the technical aspects far better than I, but I think that by the time you modified the Brynn to the extent you describe, it would be on a different branch of the Frugalhorn/ Spawn family tree.
As of the time of this post, Dave's website or server is offline, but I'm sure mr Moose can clarify where that would place it.
In practical terms, overloading the Xmax isn't a huge issue in my 200ft^2 listening room.
1 watt RMS into FE126E in either Brynn, Buschhorn MKI, Frugalhorn or ronC's A126 is more SPL than I need for my listening tastes - YMMV
Driven hard enough either the FE126 in any of the referenced enclosures or 127 in Fonken or Mileva can certainly be overloaded - but in my experience, more gracefully than the CSS FR125
Ooooh! Look! All of my bloody text which was directly copied from the frugal-horn site to the Ultra-fi site has suddenly vanished from the latter after Dave emailed him. Apparantly these are completely different designs, despite having identical proportions, driver positions & features like the number of steps used in the mouths.
Gentlemen: draw your conclusions.
P.S. I'm afraid I'm not going to apologise for the language. I hope the moderators will appreciate that under the current circumstances, it's exceptionally mild on my part.
Gentlemen: draw your conclusions.
P.S. I'm afraid I'm not going to apologise for the language. I hope the moderators will appreciate that under the current circumstances, it's exceptionally mild on my part.
The really weird thing about this is that it's very likely that he hung out here for awhile and found those designs. I don't understand why he didn't just contact you guys and ASK? Geez...
And plagiarizing the text was extremely low. How do you deny it when you copy the text word for word from the site you "borrowed" the designs from? DIY Audio is a small world. Did he think that people wouldn't notice?
I've actually met some people in the audio industry, and I'll tell you some of them are just plain sociopathic in their business practices. For every Nelson Pass, there seem to be a bunch of these jerks.
Well, at least he took it down. It's good that some people still know what shame is.
And plagiarizing the text was extremely low. How do you deny it when you copy the text word for word from the site you "borrowed" the designs from? DIY Audio is a small world. Did he think that people wouldn't notice?
I've actually met some people in the audio industry, and I'll tell you some of them are just plain sociopathic in their business practices. For every Nelson Pass, there seem to be a bunch of these jerks.
Well, at least he took it down. It's good that some people still know what shame is.
I am seeing this happen with info from my site two or three times a year, at least that I know about. It would be one thing to reverse engineer and redo the drawings or text, with some changes, to try and disguise a "new revolutionary audio concept", but some industry people are not even capable of that simple task.
What I don't understand is, why is it so hard to give people credit? Is it really that difficult?
When I've told people about the MJK open baffles that my buddy and I built, I've been asked if I designed them, and I said NO. It wasn't hard to do this. When I finally build my own pair of Sachikos, I'm sure I'll be asked that a lot, and the answer will be NO.
I guess I just don't get it and I never will.
When I've told people about the MJK open baffles that my buddy and I built, I've been asked if I designed them, and I said NO. It wasn't hard to do this. When I finally build my own pair of Sachikos, I'm sure I'll be asked that a lot, and the answer will be NO.
I guess I just don't get it and I never will.