| planet10 |
As you know Scottmoose has been helping out with MJK sims of the Frugel-Horn (since MJK as yet doesn't do 1/8 space these are only of interest as a design reference when compared against one another)
Anyway, this spurred Scott towards implementing some of the stuff floating around in his brain and has spawned a new member of the Frugel Family... if the original Frugel-Horn is the mama, this is the tall-gangly -- but smart -- teenager.
Inspired by Terry Cain's double mouth BEN series, the Replikon (discussed here http://www.diyaudio.com/forums/show...&threadid=55721 and conversations with GM about the big box (CC) long exponential port bass reflex style horn as respresented by the Replikon, Scott came up with a box that is very tolerent of differing driver parameters. It also requires no curves to be cut.
Scott is building the 1st prototypes now, and will hopefully get a chance to let them get a listen at the upcoming EggFest.
The working name for this horn was the FrugelBEN, but unless Terry Cain gives his blessing, we'll need to come up with a different catchy name -- DoubleFrugel is kinda derivative.
I haven't got detailed plans ready yet, but i will, in the next series of posts, attach some teasres.
dave |
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| planet10 |
| Some ealy renders to give the idea... the post of the tarted up one that follows has the most recent rev of the internals |
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| planet10 |
| This one shows the proper internals, but also some liberties taken with respect to moving it away from a retangular box... |
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| planet10 |
| The modeled response of 6 potential drivers -- it can be seen that the box really dominates... |
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| planet10 |
| And the current rev of the plan... |
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| pinkmouse |
| quote: | Originally posted by planet10
... we'll need to come up with a different catchy name -- DoubleFrugel is kinda derivative. |
The Wuglelhorn? ;) |
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| edjosh23 |
I just finished the Frugel-Horns, now you are making me want to try building these... d*mn you and these good designs.
Looks great
Thanks,
Josh |
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| planet10 |
| quote: | Originally posted by edjosh23
now you are making me want to try building these... d*mn you and these good designs. |
I like the way MetalMan put it, "quit pushing my woo-woo button". I said no :)
dave |
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| edjosh23 |
I've been up at school for a couple of days, school starts tomorrow and the shop is about 100 meters from my dorm. My roomate is in the design school, so maybe I can use the shop, hopefully they have a CNC :D
Josh |
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| BWRX |
| quote: | Originally posted by planet10
The modeled response of 6 potential drivers -- it can be seen that the box really dominates... |
Do the really small throat and large mouth area have anything to do with the reasonably driver independent response? |
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| Andrewbee |
Dave,
is that plan to scale?
Andrew |
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| planet10 |
| quote: | Originally posted by Andrewbee
Is that plan to scale?
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It should be, it is a snap of the CAD drawings... if you want to be an early adoptor mail me off-line, I do have (not ready for presentation) plans with all the dimensions on them.
dave |
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| cheesehead |
...but you've got me wondering.
How would these work with a Jordan Jx92s? |
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| Scottmoose |
Hi Guys
Can I take it you like them, then? ;>) Dave's been a Saint, indulging my insane ideas and drawing like mad; so has Martin, who helped interpret the data (to say nothing of creating the worksheets I use to design everything), and Greg, for his encouragement and advice whenever I asked for it.
As Dave mentioned, I've got the first pair in hand at the moment, using a pair of his modified FE126Es (which arrived yesterday: think baby modified Decware 206 and you're on the right lines), so I'll let you know the preliminary results. Unlike the Frugelhorn, these are not intended for corner placement , but for more general room-use.
Re the responses. The lower mouth will see a reflection boundary condition (the floor) to a greater extent than the upper, so bass will likely be somewhat stronger than the 1/2 space sim suggests. We did toy with the idea of a reduction in the size of the lower horn to compensate for the different pressures this entails, but in the end, we decided symmetry rules.
Why a double horn? Terry Cain's magnificent double BEN designs provided the inspiration (so it's all your fault Terry, if you're out there... ;>), which is why we thought of calling them the FrugelBEN, partly humourous, but with a healthy dose of admiration in there too.
Aside from that, the benefits are considerable. Reduces footprint, it's a bit different from the things more usually seen, and also I / we wanted to explore the potential of a nominally symmetrical radiation pattern from the MDM (Mouth Driver Mouth ;>) layout. Why a Big Vent Reflex type horn, similar to a Replikon, instead of the more usual type? Again, variety. You don't often see them, which is a shame, because they work very well, so I though, why not?
| quote: | Originally posted by BWRX
Do the really small throat and large mouth area have anything to do with the reasonably driver independent response? |
Good question. It's a combination of factors. Greg and Martin can explain the technicalities of the system behaviour far better than I can. It's mainly because the system operates in a similar way to a reflex enclosure in that below 100Hz, the horn dominates the response, so within reason (i.e. so long as the driver's Vas doesn't swamp the chamber etc's volume, and it's motor is strong enough to drive said horn), it's pretty tollerant: it doesn't affect the driver's own SPL curve over 100Hz much either, so it's very well behaved.
The Jordan's should work. Their Fs is a little low, if anything, but I suspect they'll go in, no problem at all. I'll run a sim tomorrow to check. Unfortnately, you can't do a quick and dirty check in one of the simpler sheets with this box -it's the full-blown sections sheet or nothing, so it takes a little while. If anyone has any quick requests for driver checks, say so now and I'll do them as a job-lot tomorrow.
Cheers for now
Scott |
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| Aengus |
| quote: | | ...we'll need to come up with a different catchy name -- DoubleFrugel is kinda derivative. |
The TwoFrugel? |
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| leonardc |
have you looked at bigger drivers ie-168 sigma ?
I am interested in your listening impressions, especially if you can compare with similar BIB overall and re- low-end response.
Leonard |
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| GM |
| quote: | Originally posted by Aengus
The TwoFrugel? |
Et tu Frugel? ;)
GM |
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| Scottmoose |
:D I like that, Greg.
Re the other drivers and BIB comparison etc, it's difficult to say as there were very different objectives in mind.
I really designed them for drivers in the 4 - 4 1/2in range. However, I looked at the larger Fostex drivers out of interest. The only one that will have much of a chance of working in these particular boxes would be the defunct non 'E' FE168Sigma, (providing the full potential CC volume was used), as it's Vas is sufficiently low.
Regarding extension: well, using the 4in and 4 1/2in Fostex units, I reckon they'll be about equal to a BIB designed with those drivers, and rather more versitle in not needing a corner to work properly. However, a larger BIB -say one using the Monacor SPH-60X upward, would go considerably lower than these can achieve. I don't have a baby BIB myself, mine are somewhat larger, so I won't be able to do a direct comparison. For what it's worth though, I've designed and I'm building these for my FE126Es; not a BIB, love them though I do. The BIB really comes into its own with drivers sized about 5in upward, with an Fs of 60Hz or lower. For smaller drive-units, with a higher Fs, although you can build them, and they'll work well, I reckon there are equally good or better options. Hense this new double horn. They are of course a lot larger, and will have a different sound and presentation, so it's a case of whichever works best for you! Nice to have a few designs available to suit all pockets, rooms and sonic preferences.
Best
Scott |
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| GM |
| quote: | Originally posted by BWRX
Do the really small throat and large mouth area have anything to do with the reasonably driver independent response? |
Greets!
It's the acoustically fairly large filter chamber (aka the misnomer 'CC'). It's a matter of impedance matching with the horn being overdamped and the CC underdamped, so when you get a 'close enough' balance, a ~flat response over whatever gain BW the horn vent defines is achieved.
GM |
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| Nanook |
er how 'bout
the DlugalHorn? ':)' |
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| planet10 |
| quote: | Originally posted by Nanook
er how 'bout
the DlugalHorn? ':)' |
That doesn't work. It should have the word Frugel in it and it is Scott's design... i'm just the drawer guy...
dave |
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| tinitus |
Looks like a "Chief" to me, and the next might be a "Big Chief";)
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| BWRX |
| quote: | Originally posted by Scottmoose
It's mainly because the system operates in a similar way to a reflex enclosure in that below 100Hz, the horn dominates the response, so within reason (i.e. so long as the driver's Vas doesn't swamp the chamber etc's volume, and it's motor is strong enough to drive said horn), it's pretty tollerant: it doesn't affect the driver's own SPL curve over 100Hz much either, so it's very well behaved.
Scott |
| quote: | Originally posted by GM
It's the acoustically fairly large filter chamber (aka the misnomer 'CC'). It's a matter of impedance matching with the horn being overdamped and the CC underdamped, so when you get a 'close enough' balance, a ~flat response over whatever gain BW the horn vent defines is achieved.
GM |
Thanks for the explanations guys.
It is a dual version of the frugel horn so why not simply call it the Dugel Horn? :clown:
If you don't like that then maybe Gregoose Frugelugos Horn floats your boat. |
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| planet10 |
| quote: | Originally posted by BWRX
It is a dual version of the frugel horn so why not simply call it the Dugel Horn? :clown:
If you don't like that then maybe Gregoose Frugelugos Horn floats your boat. |
Ya gotta keep my name out of this one (or anyone please). This is a Scott Lindgren design....
dave |
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| BWRX |
When I said Dugel Horn I meant it to be a combination of the word "Dual" and "Frugel".
C'mon Dave, you're the PR person at the very least! Give yourself a little credit :) |
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| planet10 |
| quote: | Originally posted by BWRX
When I said Dugel Horn I meant it to be a combination of the word "Dual" and "Frugel".
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Frugel-DuoHorn? or Duo-Frugel Horn
Frugel-BiHorn? or Bi-Frugel Horn
dave |
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| ronc |
I would be willing to bet ,hard money, that i can get the H108 down lower and better sounding.
ron |
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| planet10 |
| quote: | Originally posted by ronc
I would be willing to bet ,hard money, that i can get the H108 down lower and better sounding.
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Hey Ron, the more the merrier :)
More choice = more people building horns
dave |
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| Andrewbee |
| Frugel Horn squared? |
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| metalman |
FrugalDuo?
Frugal Squorn? (Horn Squared)
Frugal DosHorn? (nice spanish flair)
Frugal Woo-Woo Horn?
Frugal Bass2? (Nice Take-off on binary!)
Let me sleep on it, more will come to me. |
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| planet10 |
Frugel is a cross between Frugal (wise with money) & Flugel Horn (a tool for making music)
spelling = Frugel
dave |
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| Scottmoose |
Where did those two pages come from when I wasn't looking? :D
Like the names guys. Keep them coming, and I'm sure we'll decide over the next day or so.
Ron -not that you need any encouragement from the likes of me, go for it! As Dave said, the more the merrier, and the more options we can give people, so they can pick and choose which one best suits their individual requirements, the more will be built. I'm sure yours will go lower -I was only aiming for a solid response to 60Hz with this one as I try not to go too far below Fs. 10-15% below is my personal limit.
Best Regards
Scott |
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| no xo |
| How about naming it the Fruble, combining frugal and double. It`s kinda got a nice flow to the sound. Don`t hesitate to bash be me if you think it sounds stupid, I can take the punishment. NOXO. |
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| planet10 |
| quote: | Originally posted by no xo
How about naming it the Fruble, combining frugal and double. |
Personally my favorite so far
Has a soft & cuddly feel too it... has a ring & you can dance to it... Fruble-Horn.
And i was thinking the name of the thread might end up sticking...
dave |
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| BWRX |
That is a good one no xo.
You could also change the spelling to Frubel if you want to keep that little touch of personality from the original spelling. |
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| planet10 |
| quote: | Originally posted by BWRX
That is a good one no xo.
You could also change the spelling to Frubel if you want to keep that little touch of personality from the original spelling. |
Good suggestion
Frubel-Horn
Scott?
dave |
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| no xo |
| Thanks for the positive feedback,(pun intended). I was not sure if it was brilliant or absurd. If you make the name official I will have to build a pair, and right now, the last thing I need are more speakers. Thanks NOXO, and Dave keep me posted on the phase plugs for the Fostex FE206ESR, something else on my wish list. |
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| planet10 |
| quote: | Originally posted by no xo
Dave keep me posted on the phase plugs for the Fostex FE206ESR, something else on my wish list. |
One of my customers moved his FE206e plugs to his FE206seR. the regular plugs aren't long enuff so a custom size is being made for the 206seR. Those should be off to him next week.
With the regular plugs he said there was an improvement but not of the magnitude of the change in the 206e (wrong plug or just not as much needs fixing?)
dave |
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| no xo |
| Not to hijack this thread, but I`m not 100% sure phase plugs will have as much effect on the limited edition 206`s. I saved up and bought a pair of the T90AEX`s and capped them with a .47 mfd cap and no attenuator, to keep parts count low, and the tweets did not negatively affect imageing as the reg T90`s did with the reg 206`s with your phase plugs. I preferred the overall balance with the phase plugs and sold the T90A`s. The Fe206ESR`s are very different from the Fe206E`s. Now let`s get back to the Fruble`s. |
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| Scottmoose |
| Frubel-horn? Not bad. Not bad at all. |
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| no xo |
| After thinking about this all day, I agree, the spelling Frubel just looks better than Fruble. I had a guy that owns an engraving co make up some brass name plates with NOXO for my DIY projects. This kind of gives them a finishing touch, and most of my friends who have seen them tell me they look cool. Maybe Dave could do something like this and sell them with his flat packs. It`s fun and there`s pride in ownership. This is a great hobby. |
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| planet10 |
| quote: | Originally posted by no xo
After thinking about this all day, I agree, the spelling Frubel just looks better than Fruble. I had a guy that owns an engraving co make up some brass name plates with NOXO for my DIY projects. This kind of gives them a finishing touch, and most of my friends who have seen them tell me they look cool. Maybe Dave could do something like this and sell them with his flat packs. It`s fun and there`s pride in ownership. This is a great hobby. |
Yes, something like that is in the queue... at the moment a stylized Flugel-Horn (remember the original Macintosh graphics from 1984?)....
dave |
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| Geek |
| quote: | Originally posted by planet10
Frubel-Horn
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Promo pic:
Dave with big grin in leiderhosen holding out a glass stein with a little FE85 or something in it.
Caption:
"Oktoberfest for your ears, any day of the year"
*Planet10 logo*
:D |
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| LilMik |
| What about Son of Frugel ;-) |
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| Elam |
Since the whole thing ist mirrored ...
Frugellegurf, Frugel Le Gurf |
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| chrisb |
| quote: | Originally posted by ronc
I would be willing to bet ,hard money, that i can get the H108 down lower and better sounding.
ron |
If you draw it... "they" will build
(and if it's that better sounding, come?) |
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| McFaBs |
Hi,
Nice interesting project!
What about "Mu-Horn" or "Rhapsody FrugHorn"?
Ciao.Fab. |
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| tinitus |
| "Frugel Totem" - because it looks like one, and it sounds nice |
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| planet10 |
| quote: | Originally posted by chrisb
(and if it's that better sounding, come?) |
Just don't get any on the rug.
dave |
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| edjosh23 |
Dave or Scott,
I couldn't find any MathCad models of the Frugel-Horns, could you post some so we better compare the two designs?
Thanks,
Josh |
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| planet10 |
Models of the Frugel-horn only show half-space so are very misleading. Only of use in designing.
When Martin gets his flat-packs the hope is it will give him a tool to get quarter-space & eigth-space models working & accurate.
dave |
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| Scottmoose |
I can do a 1/4 space model of them using the existing software, but they have to be done in the full-blown BLH sections sheet so it might take me a while to get them both finished.
First test mule cabinet will be completed this afternoon. It's not overly pretty -I don't have the facilities, the money, the tools or the talent to achieve a good finish sadly, but they're accurate to the plans, and fine for their proof-of-concept role.
Best
Scott |
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| Scottmoose |
Gentlemen, the glue on the second side panel is presently drying, with about 300lbs of weight stacked on top of it.
I'll have a quick check of the joints, and seal them with caulking (I do that with all my enclosures -never hurts to be 100% sure, especially when you're not the world's greatest cabinet-builder, and have limited tools). Then a quick final plane, sand, and I'll fire it up and have a quick mono-test. Internal wire is my usual pair of 24AWG twisted conductors extracted from a run of Cat5, and gold-plated binding posts from Maplins. I'll initially check it without any stuffing, then add -always easier that way IMO.
Best
Scott |
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| edjosh23 |
Any pictures of construction? What wood are you using?
Josh |
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| Scottmoose |
| Nothing nice I'm afraid -just bog-standard 18mm MDF. Not the top choice for a finished speaker, but these are just mules done to check the basic geometry works as predicted and to help tweak the basic design. I'll try to get some photographs up later -and in the process humiliate myself no doubt. As I said above, my tools are very limited, and I'm not great at building I'm afraid. Solid, and accurate to the drawings, yes. Pretty, no. |
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| BWRX |
| quote: | Originally posted by Scottmoose
Solid, and accurate to the drawings, yes. |
Hey that's all that really matters. Well, that and the sound of course. :hphones: |
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| Scottmoose |
| Tell that to my ex. :D |
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| flaevor |
my name suggestion (for what it's worth)
Frugelio from frugal flugel and figlio( italian for son)
Other than that my wife is soon going to hate you guys for putting all these ideas in my head. |
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| moray james |
| comes in an assortment of flavors which can be the different colors of the cabinets. Regards Moray James. |
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| earsandeyes |
I just saw this thread for the first time. Looks a nice concept to me.
My first toughts were on the j-low.
I have not looked in the design details, but i could be:
Son of j-low(p)assy
regards
E&E |
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| Scottmoose |
Internally a completely different layout, though externally it does look like a 1/4 width version of Nelson's J-Lo. I never thought of that before -I'd completely forgotten about it; don't ask me how! :o
Taking this size difference into account, how about the [PJ] Harvey Horn? (my musical Goddess, and suitably diminutive in proportions) I could go with that.
Oh yeah -final side is now solidly glued. Bit of sanding to do, and then (leaving finish aside) the first cab will be complete. I got delayed today cleaning the garage out. Oh well.
Cheers
Scott
Just for the sake of it, here's a nice picture of Polly Harvey to enjoy. Somewhat smaller than J-Lo, but on the whole, much nicer IMHO. ;) :worship: |
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| tinitus |
| Hi Scott, any idea how your horn would perform converted into a frontloaded bashorn, maybe it could work without crossover ? |
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| Scottmoose |
| Haven't a clue. But I'll check out of interest when I get a moment. |
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| Scottmoose |
I haven't fired it up yet. Might wait until I've completed the second enclosure. But for what it's worth, here are some pictures of the first test mule, in all it's raw MDF, unpainted, and non-veneered glory. Sorry it's not very pretty yet guys -I'm sure all of you can do a million times better, but it's solid and accurate to the plans. I haven't yet added the bracing panels to the mouths -deliberate as I wanted to find out just how badly they'll resonante. The second enclosure that I'll start tomorrow will have them in, for comparison.
The brown you can see on the edges is sealant: I like to be sure of these things with prototypes. The white on some panels is a very thin skim of flexible filler (a la classic car restoration), just to get the surfaces perfectly flat, as I'll eventually get around to painting / veneering them. |
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| Scottmoose |
| And another one, which gives a better sense of scale. Nice and compact IMHO. Like PJ Harvey... ;) |
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| tinitus |
I have build horns since I was 14, but not in several years I admitt, but they never fail to excite me, and theese are really tempting:cool:
Hardcore fanatics could add wings to the sides, ohhh! what a biiig mouth |
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| edjosh23 |
Scott,
Very nice. I'm interested in listening impressions. Also, what would happen if the mouth area was doubled (thinking in comparison to J-Low)? The CC would be too big, but we can always make less room in the CC.
Thanks,
Josh |
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| Scottmoose |
Hi guys
Glad you like them. Re the increasing of the width, it depends on what your objective is. Probably efficiency will be boosted, and theoretically they'll go deeper, though I'd be wary about trying to go too deep using small drivers with limited Xmax. I'll have a look later. It might be good for the larger 6 1/2in drivers, though the path-length is a little too short to do them full justice. |
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| layertone |
Lookin' very good! Double horns, Frugel, Bibs, Austins - all kinds of chasis for the drivers. Just can't keep up!
Great job!!! |
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| Godzilla |
Looking at this design and the photos Scottmoose posted I’d call them exotic, modern classics.
Cool beans!
Godzilla |
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| Scottmoose |
| Thanks for the positive feedback guys. Second enclosure is currently being built, should be finished by the weekend when I can get on with some listening and tweaking. |
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| Crossblade |
I'm looking forward to reading your opinion on them ! :)
I want them for my FE126e :angel: |
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| Crossblade |
| Bump :rolleyes: |
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| holdent |
Scottmoose:
I'm interested in how you modeled the *pick a name!* horn using the King's MathCad model. I'm not sure how to simulate the combination of upper and lower horn mouths at the same time. Any comments? |
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| Scottmoose |
It's about time we settled on a name. Will have a word with Dave & let you know.
The existing MathCad worksheets can simulate the 1/2 space response of double horns as in this respect, they're not much different to a single horn.
Theoretically it's easy: just design a BLH with a response you like in MathCad. When you come to double it (i.e draw out the plans), keep the CC as is, and reduce the size of each throat and mouth by 1/2 over the original, so the total CSA of throat and mouth remains identical to the single horn you originally designed. Horn length remains unchanged.
Unfortunately in practice it's not as easy as that, as you need to keep in the forefront of your mind mind that the total reflection boundary condition seen will be considerably less than MathCad predicts due to the upper mouth being shifted away from the floor, so you have to account for this in the design stages or the response will be, frankly, vile. That's the hard bit, as you already have to know something about the in-room behaviour of enclosures etc. when you design it, and then how to compensate. Fun, isn't it? |
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| badman |
| quote: | Originally posted by Scottmoose
Probably efficiency will be boosted, and theoretically they'll go deeper, though I'd be wary about trying to go too deep using small drivers with limited Xmax. I |
This is not my understanding: with horns, excursion is controlled by the horn loading, and beneath the horn cutoff, the driver becomes a direct radiator: so a larger horn would tend to reduce the excursion requirements of the driver by damping cone motion in lower bass more than a smaller horn. |
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| Scottmoose |
| It's not so much the Xmax I'm worried about, as trying to push a small driver too far below Fs. |
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| Scottmoose |
| Fired them up earlier. They work. Very well. Some detail tweaks to make to the CC damping, and you'll want to use BB ply for a proper version as MDF does the sound of acoustic guitar few favours, but otherwise it's relatively plain sailing. Imaging in my front room was frightening, and gererally tone is great. The Wicker Man OST sounded fantastic. |
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| planet10 |
| quote: | Originally posted by Scottmoose
Imaging in my front room was frightening, and gererally tone is great. |
:^)
Another hit for the little guys?
dave |
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| Scottmoose |
| I was impressed. They're pretty directional -more than I was expecting, but less than some other FR horns I've heard. |
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| Scottmoose |
Basic finish now just about done. Should get to the tweaking stage over the weekend, or early next week, with any luck. Pictures to come. Oatmeal panels with stone effect front baffle. Odd choice, but that's because it was what I had in the garage! Looks quite good IMO. Veneer would be stunning, but funds don't allow that, especially for test mules. I'm thinking this figured satinwood would be just the ticket... a friend wants a pair for her bedroom and this finish would suit her down to the ground.
Scott |
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| Scottmoose |
Indeed. I didn't have Onur's design in mind when I came up with these things, more TC's IM BENs (not that I know anything about their internals), but the concept is roughly similar. Nothing novel about it though -BVR horns have been around since the dawn of time, just as long as small CC, longer pathlength versions; they just haven't been used as much for hifi, which is why I fancied going for one. Nice to do something a bit different.
I'm toying with the idea of cramming a long-path-length version into the same size cabinet as some people (usually the one's who've never heard them) object to the short horn, large CC types & we might as well cater to all tastes. I'll work on that some over the coming months anyway.
Best
Scott |
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| soongsc |
| If you look at the FEM simulation, the reflection from bends seem interesting, and probably best avoided unless it nulls other modes in the horn. |
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| Scottmoose |
| Remind me what an FEM simulation is. I am not very clever. |
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| soongsc |
| quote: | Originally posted by Scottmoose
Remind me what an FEM simulation is. I am not very clever. |
Finite Element (FEM). The video of it is at the lower portion of the page. |
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| Scottmoose |
| Ah. Thanks. Not something I've ever worried about a great deal, mainly because I rarely design anything with more than about 1 fold so it's never been an issue. I wonder if this is partially the cause of some people's dislike of the heavily folded Nagaoka-type designs, which deliberately go for lots of folds to maximise horn path-length for a given box size. I'll reserve judement, as usual, until I can explore it more, but interesting. |
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| planet10 |
At the frequencies Scott is letting out of the CC, it is unlikely the bands will be visible at all...
dave |
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| Scottmoose |
True. Basically, nothing much over 100Hz or so, bar a spike up in the 500Hz regions, which I haven't yet figured how to clobber (assuming it's audible) gets out of this thing.
Sorry I got somewhat lost earlier -had a few things churning around what passes for my mind so I wasn't quite on top form. Yes, reflections are a pain; one of the reaons I rarely bother with multiple folds. The long pathlength version of the doublehorn I'm planning will be far more subject to these issues as there's considerably more internal bends. I'm trying to figure the best internal layout at present as I'm not sure I fancy an 80in line ricocheting backward and forward for almost it's entire length! At the moment, I'm erring toward a variation of the FE166E layout. Nagaoka style or a 'proper' flare will both be possible. The response has more ripple than the BVR type, but it should suit those who want an amazingly easy build, or who prefer the small CC horns and want a bit more gain in the LF regions. Although the current one needs a little tweaking, it's pretty much ready now.
Best
Scott |
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| tinitus |
| Played a bit, not much longer, but a bit |
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| planet10 |
That makes me think... tall, stand up spiral horn... gives the potential for a very large mouth.
dave |
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| tinitus |
This will take a very experienced builder, and I am not sure it will be worth the trouble
Oh, hi Dave, yes It just got thinking of the "spiral" ? |
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| tinitus |
| Dave, makes me think....if you could get theese curves "moulded".....sold as kitsets.....would make it VERY easy to build:cool: |
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| Scottmoose |
| Nice work guys! Creativity is the name of the game. Mind, if you want 'easy' you should try the Nagaoka-style long path double horns I'm working on. All right angles, butt-joints and very simple sizing. We're looking at whole numbers halves and quarters. That's it. A 10 year old could build them, accurately, as a school project. Only thing they'd need help with would be cutting the driver hole. I've seen harder Lego kits. |
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| Geek |
| quote: | Originally posted by planet10
That makes me think... tall, stand up spiral horn... gives the potential for a very large mouth.
dave |
That would be nice :)
Have you seen this flat spiral for design ideas? |
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| tinitus |
| Thanks, but you guys do the hard part....making it work! |
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| tinitus |
| Maybe something like this....big and flat....against the wall:rolleyes: |
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